| abbrev | define |
|---|---|
| A&G | Administrative And General Expenses |
| AADE | American Association Of Drilling Engineers |
| AAGR | Average Annual Growth Rate |
| AAPG | American Association Of Petroleum Geologists |
| AAQS | Ambient Air Quality Standards |
| AAR | After Action Reviews |
| AAV | Annulus Access Valve |
| ABAN | Abandonment |
| ABF | Aquatic Base Flow |
| ABS | American Bureau Of Shipping |
| ABSA | Alberta Boilers Safety Association |
| AC | Alternating Current |
| ACA | Annual Charge Adjustment |
| ACHE | Air Cooled Heat Exchanger |
| ACOU | Acoustic |
| ACP | Annular Casing Pressure |
| ACP | Area Contingency Plan |
| ACQU | Acquisition Log |
| ACRS | Accelerated Cost Recovery System |
| ADIOS | Automated Data Inquiry For Oil Spills |
| ADIT | Accumulated Deferred Income Taxes |
| ADROC | Advanced Rock Properties Report |
| ADT | Applied Drilling Technology |
| AF | Arctic Floater |
| AFE | Authorization For Expenditure |
| AFFF | Aqueous Film Forming Foam |
| AFP | Active Fire Protection |
| AFV | Annular Flow Valve |
| AGRU | Acid Gas Removal Unit |
| AHBDF | Along Hole (Depth) Below Derrick Floor |
| AHD | Along Hole Depth |
| AI | Artificial Island |
| AIChE | American Institute Of Chemical Engineers |
| AIME | American Institute Of Mining, Metallurgical, And Petroleum Engineers |
| AIRG | Airgun |
| AIRRE | Airgun Report |
| AIS | Automatic Identification System |
| AIT | Array Induction Tool |
| AIT | Auto Ignition Temperature |
| AIV | Alternate Isolation Valve |
| AL | Appraisal Licence |
| AL | Artificial Lift |
| ALARP | As Low As Reasonably Practicable |
| ALC | Aertical Seismic Profile Acoustic Log Calibration |
| ALR | Acoustic Log Report |
| AMDEA | Activated Methyldiethanolamine |
| AMNI | Associate Member Of The Nautical Institute |
| Amp | Ampere |
| AMS | Auxiliary Measurement Service Log |
| AMSL | Above Mean Sea Level |
| AMV | Annulus Master Valve |
| AMVER | US Automated Mutual Assistance Vessel Rescue |
| ANACO | Analysis Of Core Logs Report |
| ANARE | Analysis Report |
| ANP | Brazil’S National Petroleum Agency |
| ANPR | Advance Notice Of Proposed Rulemaking |
| ANSI | American National Standards Institute |
| AOF | Absolute Open Flow |
| AOFP | Absolute Open Flow Potential |
| AOPL | Association Of Oil Pipe Lines |
| APCD | Air Pollution Control District |
| APD | Application For Permit To Drill |
| API | American Petroleum Institute |
| APM | Application For Permit To Modify |
| APPRE | Appraisal Report |
| APS | Active Pipe Support |
| AQ | Air Quality |
| AQAP | Air Quality Attainment Plan |
| AQMD | Air Quality Management District |
| ARACL | Array Acoustic Log |
| ARB | Air Resources Board |
| ARCS | Admiralty Raster Chart Service |
| ARESV | Analysis Of Reservoir |
| ARI | Azimuthal Resistivity Image |
| ARPA | Automatic Radar Plotting Aids |
| ARRC | Array Acoustic Report |
| ART | Actuator Running Tool |
| ART | Alternate Response Technologies |
| AS | Array Sonic Processing Log |
| ASBA | Association Of Ship Brokers And Agents |
| ASCE | American Society Of Chemical Engineers |
| ASCSSV | Annulus Surface Controlled Sub Surface Valve |
| ASME | American Society Of Mechanical Engineers |
| ASP | Array Sonic Processing Report |
| ASPO | Asociation For The Study Of Peak Oil & Gas |
| ASR | Atmosphere Supplying Respirator |
| ASRO | Australian Shipping Registration Office |
| ASTM | American Society For Testing And Materials |
| ASV | Annular Safety Valve |
| ATD | Application To Drill |
| atm | Atmosphere, A Unit Of Pressure |
| AUV | Autonomous Underwater Vehicle |
| AV | Annular Velocity Or Apparent Viscosity |
| AVO | Amplitude Variation With Offset (Seismic) |
| AVO | Amplitude Versus Offset (Geophysics) |
| AWB/V | Annulus Wing Block/Valve (Xt) |
| AWO | Approval For Well Operation |
| BA | Brazos Area Gulf Of Mexico Leasing Area |
| BA | Bridging Agreement |
| BARS | Borehole Acoustic Reflection Survey |
| BAST | Best Available And Safest Technology |
| Bbbl | Billion Barrels |
| Bbl | Barrel(S) Of Oil |
| BBS | Behavioral Based Safety |
| BBSM | Behaviour Based Safety Management |
| BC | Code Of Safe Practice For Solid Bulk Cargoes |
| BCD | Barrels Per Calendar Day |
| Bcf | Billion Cubic Feet (Of Natural Gas) |
| Bcfd | Billion Cubic Feet Per Day |
| Bcfe | Billion Cubic Feet Of Gas Equivalent |
| BDF | Below Derrick Floor |
| BDI | Baltic Dry Index |
| BDL | Bit Data Log |
| BDV | Blow Down Valve |
| BFI | Baltic Freight Index |
| BFOE | Brent, Forties, Oseberg, And Ekofisk (Oil Fields) |
| BFPD | Barrels Of Fluid Per Day |
| BGL | Below Ground Level (Used As A Datum For Depths In A Well) |
| BGL | Borehole Geometry Log |
| BGS | British Geological Survey |
| BGT | Borehole Geometry Tool |
| BGWP | Base Of Ground Water Protection |
| BH | Bloodhound |
| BHA | Bottomhole Assembly |
| BHC | Bhc Gamma Ray Log |
| BHCA | Bhc Acoustic Log |
| BHCP | Bottomhole Circulating Pressure |
| BHCS | Bhc Sonic Log |
| BHCT | Bottomhole Circulating Temperature |
| BHFP | Bottomhole Flowing Pressure |
| BHL | Borehole Log |
| BHL | Bottomhole Location |
| BHP | Bottom Hole Pressure |
| BHPRP | Borehole Pressure Report |
| BHSRE | Bottom Hole Sampling Report |
| BHSS | Borehole Seismic Survey |
| BHST | Bottomhole Static Temperature |
| BHT | Bottomhole Temperature |
| BHTV | Borehole Television Report |
| BIMCO | Baltic And International Maritime Council |
| BIOR | Biostratigraphic Range Log |
| BIORE | Biostratigraphy Study Report |
| BIVDL | Bi/Dk/Wf/Casing Collar Locator/Gamma Ray Log |
| BLI | Bottom Of Logging Interval |
| BLP | Bridge Linked Platform |
| BLPD | Barrels Of Liquid Per Day |
| BM | Bay Marchand Area Gulf Of Mexico Leasing Area |
| BML | Below Mud Line |
| BMP’s | Best Management Practices |
| BO | Back Off Log |
| BO | Biological Opinion |
| BOB | Back On Bottom |
| BOD | Basis of Design |
| BOD | Biological Oxygen Demand |
| boe | Barrels Of Oil Equivalent |
| BOEM | US Bureau Of Ocean Energy Management |
| BOEPD | Barrels Of Oil Equivalent Per Day |
| boepd, boe/d, boed | Barrel Of Oil Equivalent Per Day |
| BOM | Bill Of Materials |
| BOP | Blowout Preventer |
| BOP | Bottom Of Pipe |
| BOPD | Barrels Of Oil Per Day |
| BOPE | Barrels Of Oil Per Day Equivalent |
| BOPE | Blowout Preventer Equipment |
| BOPM | Barrels Of Oil Per Month |
| BOREH | Borehole Seismic Analysis |
| BOSIET | Basic Offshore Safety Induction And Emergency Training |
| BOSVA | British Offshore Support Vessel Owners Association |
| BOTHL | Bottom Hole Locator Log |
| BOTTO | Bottom Hole Pressure/Temperature Report |
| BP | Boiling Point |
| BP | Bubble Point |
| bpd | Barrels Per Day |
| BPFL | Borehole Profile Log |
| BPH | Barrels Per Hour |
| BPI | Baltic Panamax Index |
| BPLUG | Baker Plug |
| BPV | Back Pressure Valve |
| BR | Barge |
| BROA | British Rig Owners Association |
| Brown Fields | Fields Beyond Their Production Plateau But Still Producing |
| BRPLG | Bridge Plug Log |
| BRS | Bulgarian Register Of Shipping |
| BRT | Below Rotary Table |
| BS | Breton Sound Area Gulf Of Mexico Leasing Area |
| BS&W | Basic Sediment & Water |
| BSDV | Boarding Shutdown Valve |
| BSEE | US Bureau Of Safety And Environmental Enforcement |
| BSL | Below Sea Level |
| BSL | Burner Safety Low |
| BSML | Below Sea Mean Level |
| BSR | Bend Strength Ratio |
| BSR | Blind Shear Ram |
| BSR | Blind Shear Rams (Blowout Preventer) |
| BSR | Bottom Simulating Reflector |
| BTEX | Benzene, Toluene, Ethylbenzene, Xylene |
| BTHL | Bottom Hole Log |
| BTI | British Trade International |
| BTO/C | Break To Open/Close (Valve Torque) |
| BTU | British Thermal Unit |
| BU | Bottom Up |
| BUL | Bottom Up Lag |
| BUR | Build Up Rate |
| BV | Bureau Veritas |
| BVO | Ball Valve Operator |
| BWOC | By Weight Of Cement |
| BWOW | By Weight Of Water |
| BWPD | Barrels Of Water Per Day |
| C (cent.) | Centigrade |
| C&E | Well Completion And Equipment Cost |
| C&K | Choke And Kill |
| C&S | Cased And Suspended |
| C/P | Consumption/Production (Ratio) |
| C1 | Methane |
| C2 | Ethane |
| C3 | Propane |
| C4 | Butane |
| C6 | Hexanes |
| C7+ | Heavy Hydrocarbon Components |
| CA | Core Analysis Log |
| CAA | Clean Air Act |
| CAAA | Clean Air Act Amendments |
| CAD | Computer Assisted Design |
| CAER | Community Awareness And Emergency Response |
| CALI | Calliper Log |
| CALOG | Circumferential Acoustic Log |
| CALVE | Calibrated Velocity Log Data |
| CAODC | Canadian Association Of Oilwell Drilling Contractors |
| CAP | Condition Assessment Program Survey |
| CAPEX | Capital Expenditure |
| CAPP | Canadian Association Of Petroleum Producers |
| CART | Cam Actuated Running Tool (Housing Running Tool) |
| CART | Cap Replacement Tool |
| CAS | Casing Log |
| CATS | Central Area Transmission System |
| CB | Core Barrel |
| CBI | Computer Based Information |
| CBI | Confederation Of British Industry |
| CBIL | Cbil Log |
| CBL | Cement Bond Log |
| CBM | Choke Bridge Module |
| CBM | Coalbed Methane |
| CBM | Coalbed Methane |
| CBM | Conventional Buoy Mooring |
| CBT | Computer Based Training |
| CCA | Clean Carribbean & Americas |
| CCC | Carrier Container Council |
| CCHT | Core Chart Log |
| CCL | Casing Collar Locator |
| CCLP | Casing Collar Locator Perforation |
| CCLTP | Casing Collar Locator Through Tubing Plug |
| CCP | Controllable Pitch Propeller |
| CCS | Carbon Capture And Storage (Or Sequestration) |
| CCS | China Classification Society |
| CD | Core Description |
| CDA | Common Data Access |
| CDATA | Core Data |
| CDIS | Cdi Synthetic Seismic Log |
| CDP | Common Depth Point (Geophysics) |
| CDP | Comprehensive Drilling Plan |
| CDR | Chemical Data Reporting Rule |
| CDRCL | Compensated Dual Resistivity Cal. Log |
| CDU | Control Distribution Unit |
| CECAN | Cec Analysis |
| CEME | Cement Evaluation |
| CEN | European Committee For Standardization |
| CENELEC | European Committee For Electro Technical Standardization |
| CEPA | Canadian Energy Pipeline Association |
| CERCLA | US Comprehensive Environmental Response Compensation And Liability Act |
| CERE | Cement Remedial Log |
| CES | Coast Earth Station |
| CESMA | Confederation Of European Union Shipmasters Associations |
| CET | Cement Evaluation Tool |
| CF | Completion Fluid |
| Cf | Cubic Feet |
| CFD | Computational Fluid Dynamics |
| CFR | Code Of Federal Regulations |
| Cfs | Cubic Feet Per Second |
| CG | Center of Gravity |
| CG | Coast Guard |
| CGBF | Concrete, Gravity Based Structure |
| CGL | Core Gamma Log |
| CGPH | Core Graph Log |
| CGR | Condensate Gas Ratio |
| CGT | Capital Gains Tax |
| CGTL | Compact Gas To Liquids |
| CH | Cased Hole |
| CH | Charlotte Harbor Gulf Of Mexico Leasing Area |
| CHCNC | Chcnc Gamma Ray Casing Collar Locator |
| CHDTP | Calliper Hdt Playback Log |
| CHECK | Checkshot And Acoustic Calibration Report |
| CHESM | Contractor, Health, Environment And Safety Management |
| CHKSR | Checkshot Survey Report |
| CHKSS | Checkshot Survey Log |
| CHOPS | Cold Heavy Oil Production With Sand |
| CHP | Casing Hanger Pressure |
| CHROM | Chromatolog |
| CHRT | Casing Hanger Running Tool |
| CIBP | Cast Iron Bridge Plug |
| CILD | Conduction Log |
| CIMV | Chemical Injection Metering Valve |
| CIRM | International Radio Maritime Committee |
| CIT | Chartered Institute Of Transport |
| CITHP | Closed In Tubing Head Pressure (Tubing Head Pressure When The Well Is Shut In) |
| CIV | Chemical Injection Valve |
| CL | Core Log |
| Class | Category In Classification Register |
| CLC | International Convention On Civil Liability For Oil Pollution Damage |
| CLG | Core Log And Graph |
| CLUP | Coastal Land Use Plan |
| CM | Choke Module |
| CMP | Coastal Management Program |
| CMP | Common Midpoint (Geophysics) |
| CNCF | Field Normalised Compensated Neutron Porosity |
| CND | Compensated Neutron Density |
| CNFDP | Cnfd True Vertical Depth Playback Log |
| CNG | Compressed Natural Gas |
| CNGR | Compensated Neutron Gamma Ray Log |
| CNL | Compensated Neutron Log |
| CNLFD | Cnl/Fdc Log |
| CO | Carbon Monoxide |
| CO | Change Out |
| CO2 | Carbon Dioxide |
| COA | Contract Of Affreightment |
| COC | Certificate Of Conformance |
| COD | Chemical Oxygen Demand |
| COFR | Certificate Of Financial Responsibility |
| COL | Collar Log |
| Colreg | International Convention On Collision Regulations |
| COMAN | Compositional Analysis |
| COML | Compaction Log |
| COMP | Composite Log |
| COMPR | Completion Program Report |
| COMPU | Computest Report |
| COMRE | Completion Record Log |
| CONDE | Condensate Analysis Report |
| CONDR | Continuous Directional Log |
| COOGER | California Offshore Oil And Gas Energy Resources |
| CORAN | Core Analysis Report |
| CORE | Core Report |
| CORG | Corgun Log |
| CORIB | Coriband Log |
| CORLG | Correlation Log |
| COROR | Core Orientation Report |
| COS | Center For Offshore Safety |
| CoSWP | Code Of Safe Working Practices For Merchant Seamen |
| COTP | Captain Of The Port |
| COW | Crude Oil Washing |
| COXY | Carbon/Oxygen Log |
| CPI | Chemical Process Industries |
| CPI | Consumer Price Index |
| CPI | Cpi Log (Computer Processed Interpretation) |
| CPI separator | Corrugated Plate Interceptor |
| CPICB | Cpi Coriband Log |
| CPIRE | Cpi Report |
| CPS | Cycles Per Second |
| CPU | Cavern Point Unit |
| CRA | Corrosion Resistant Alloy |
| CRET | Cement Retainer Setting Log |
| CRP | Common/Central Reference Point (Subsea Survey) |
| CRP | Control Riser Platform |
| CRS | Croatian Register Of Shipping |
| CRT | Clamp Replacement Tool |
| CS | Chandeleur Sound Gulf Of Mexico Leasing Area |
| CsF | Caesium Formate |
| csg | Casing |
| CSHN | Cased Hole Neutron Log |
| CSI | Csi Log |
| CSMT | Core Sampler Tester Log |
| CSO | Complete Seal Off |
| CSPG | Canadian Society Of Petroleum Geologists |
| CSS | Code Of Ship Management Standards |
| CSS | Cyclic Steam Stimulation (Method) |
| CSTAK | Core Sample Taken Log |
| CSUG | Canadian Society For Unconventional Gas |
| CT | Coiled Tubing |
| CT | Complex Total |
| CT | Compliant Tower |
| CT | Corporation Tax |
| CTCO | Coiled Tubing Clean Out |
| CTD | Coiled Tubing Drilling |
| CTLF | Coil Tubing Lift Frame |
| CTLF | Compensated Tension Lift Frame |
| CTM | Coil Tubing Measurement |
| CTOD | Crack Tip Opening Displacement |
| CTRAC | Cement Tracer Log |
| CTU | Cargo Transport Unit |
| CTU | Coiled Tubing Unit |
| CUP | Conditional Use Permit |
| CUT | Cutter Log |
| CUTTD | Cuttings Description Report |
| CWA | Clean Water Act |
| CWI | Certified Welding Inspector |
| CWOP | Complete Well On Paper |
| CWOR | Completion Work Over Riser |
| CYBD | Cyberbond Log |
| CYBLK | Cyberlook Log |
| CYDIP | Cyberdip Log |
| CYDN | Cyberdon Log |
| CYPRO | Cyberproducts Log |
| CZMA | US Coastal Zone Management Act |
| CZMP | Coastal Zone Management Program |
| D | Day |
| D&C | Drilling And Completions |
| DAC | Dipole Acoustic Log |
| DARCI | Darci Log |
| DART | Days Away, Restricted Work, Or Job Transfer |
| DAT | Wellhead Housing Drill Ahead Tool |
| DAZD | Dip And Azimuth Display |
| dBA | Decibles |
| DBB | Double Block And Bleed |
| DC | Desoto Canyon Gulf Of Mexico Leasing Area |
| DC | Direct Current |
| DC | Drill Centre |
| DC | Drill Collar(S) |
| DCAL | Dual Caliper Log |
| DCP | Driller’S Control Panel |
| DD | Directional Driller Or Directional Drilling |
| DD | Dustin Dome Gulf Of Mexico Leasing Area |
| DDBHC | Ddbhc Waveform Log |
| DDET | Depth Determination Log |
| DDM | Derrick Drilling Machine (A.K.A. Top Drive) |
| DDNL | Dual Det. Neutron Life Log |
| DDPT | Drill Data Plot Log |
| DEAL | Digital Energy Atlas & Library |
| DECC | Department For Energy And Climate Change (Uk) |
| DECT | Decay Time |
| DEFSU | Definitive Survey Report |
| DELTA | Delta T Log |
| Delta | Difference Between Plan And Performance |
| DEN | Density Log |
| DEPAN | Deposit Analysis Report |
| DEPC | Depth Control Log |
| DESFL | Deep Induction Sfl Log |
| DEV | Development Well, Lahee Classification |
| DEVLG | Deviation Log |
| DEXP | D Exponent Log |
| DF | Derrick Floor |
| DFR | Drilling Factual Report |
| DFT | Dry Film Thickness |
| DGP | Dynamic Geohistory Plot (3D Technique) |
| DGPS | Differential Global Positioning System |
| DH | Drilling History |
| DHC | Depositional History Curve |
| DHPTT | Downhole Pressure/Temperature Transducer |
| DHSV | Downhole Safety Valve |
| DIBHC | Dis Bhc Log |
| DIEGR | Dielectric Gamma Ray Log |
| DIF | Drill In Fluids |
| DIL | Dual Induction Log |
| DILB | Dual Induction Bhc Log |
| DILL | Dual Induction Laterolog |
| DILLS | Dual Induction Log Lss |
| DILSL | Dual Induction Log Sls |
| DIM | Directional Inertia Mechanism |
| DINT | Dip Interpretation |
| DIP | Dipmeter Log |
| DIPAR | Dipole Acoustic Report |
| DIPBH | Dipmeter Borehole Log |
| DIPFT | Dipmeter Fast Log |
| DIPLP | Dip Lithology Pressure Log |
| DIPRE | Dipmeter Report |
| DIPRM | Dip Removal Log |
| DIPSA | Dipmeter Soda Log |
| DIPSK | Dipmeter Stick Log |
| DIRS | Directional Survey Log |
| DIRSU | Directional Survey Report |
| DIS | Draft International Standard |
| DISFL | Disfl Dbhc Gamma Ray Log |
| DISO | Dual Induction Sonic Log |
| DL | Development Licence |
| DLat | Difference In Latitude |
| DLIST | Dip List Log |
| DLL | Dual Laterolog |
| DLong | Difference In Longitude |
| DLS | Dogleg Severity |
| DLT | Digital Linear Tape |
| DMA | Dead Man Anchor |
| DMDO | Distillate Marine Diesel Oil |
| DMR | Discharge Monitoring Report |
| DNC | Digital Nautical Chart |
| DNHO | Downhole Logging |
| DNV | Det Norske Veritas |
| DO | Dissolved Oxygen |
| DO | Division Order |
| DOA | Delegation Of Authority |
| DOC | Document Of Compliance |
| DOCD | Development Operations Coordination Documents |
| DOE | US Department Of Energy |
| DOI | US Department Of Interior |
| DOL | US Department Of Labor |
| DOO | Designation Of Operator |
| DOT | US Department Of Transportation |
| DOWRE | Downhole Report |
| dP | Delta Pressure |
| DP | Dewpoint |
| DP | Drill Pipe |
| DP | Dynamic Positioning |
| DPDV | Dynamically Positioned Drilling Vessel |
| DPL | Dual Propagation Log |
| DPLD | Differential Pressure Levitated Device (Or Vehicle) |
| DPO | Dynamic Positioning Operator |
| DPP | Development And Production Plan |
| DPRES | Dual Propagation Resistivity Log |
| DPS | Dynamic Positioning System |
| DPT | Deeper Pool Test, Lahee Classification |
| DQLC | Dipmeter Quality Control Log |
| DR | Dead Reckoning |
| DR | Delay Rental |
| DR | Drilling Report |
| DR | Dummy Run Log |
| DRI | Drift Log |
| DRLCT | Drilling Chart |
| DRLOG | Drilling Log |
| DRLPR | Drilling Proposal/Progress Report |
| DRPG | Drilling Program Report |
| DRPRS | Drilling Pressure |
| DRREP | Drilling Report |
| DRYRE | Drying Report |
| DS | Deviation Survey, (Also Directional System) |
| DS | Drillship |
| DSC | Dangerous Goods, Solid Cargoes And Containers |
| DSCAN | Dsc Analysis Report |
| DSI | Dipole Shear Imager |
| DSPT | Cross Plots Log |
| DSS | Decision Support System |
| DST | Drill Stem Test |
| DSTG | Dstg Log |
| DSTL | Drill Stem Test Log |
| DSTND | Dual Space Thermal Neutron Density Log |
| DSTPB | Drill Stem Test True Vertical Depth Playback Log |
| DSTRE | Drill Stem Test Report |
| DSTSM | Drill Stem Test Summary Report |
| DSTW | Drill Stem Test Job Report/Works |
| DSV | Diving Support Vessel |
| DT | Day Tortugas Gulf Of Mexico Leasing Area |
| DTPB | Cnt True Vertical Depth Playback Log |
| DTT | Depth To Time |
| DW | Deep Water |
| DWH | Deepwater Horizon |
| DWOP | Deepwater Operations Plan |
| DWOP | Drilling Well On Paper |
| DWQL | Dual Water Quicklook Log |
| DWRRA | US Deep Water Royalty Relief Act |
| DWSS | Dig Well Seismic Surface Log |
| DWT | Deadweight Tons |
| DXC | Dxc Pressure Pilot Report |
| E | Young’S Modulus |
| E&A | Exploration And Appraisal |
| E&P | Exploration And Production |
| E/W | East/West |
| EA | Environmental Assessment |
| EA | Environmental Assessment |
| EAGE | European Association Of Geoscientists & Engineers |
| EBITDA | Earnings Before Interest, Taxes, Depreciation, And Amortization |
| EC | European Commission |
| ECC | Emergency Control Center |
| ECD | Equivalent Circulating Density |
| ECDIS | Electronic Chart Display And Information System |
| ECGD | Exports Credits Guarantee Department |
| ECHA | European Chemicals Agency |
| ECITB | Engineering Construction Industry Training Board |
| ECP | External Casing Packer |
| ECRD | Electrically Controlled Release Tool |
| ECS | Electronic Chart System |
| EDP | Emergency Disconnect Package |
| EDP | Exploration Drilling Program Report |
| EDR | Exploration Drilling Report |
| EDRC | Effective Daily Recovery Capacity (Of Oil Skimmers) |
| EDS | Emergency Disconnect Sequence |
| EEHA | Electrical Equipment In Hazardous Areas |
| EEP | Emergency Evacuation Plan |
| EER | Emergency Escape And Refuge (System) |
| EERA | Escape, Evacuation, And Rescue Analysis |
| EEZ | Exclusive Economic Zone |
| EFH | Essential Fish Habitat |
| EFL | Electrical Flying Lead |
| EFR | Engineering Factual Report |
| EGMBE | Ethylene Glycol Mono Butyl Ether |
| EHT | Electric Heat Trace |
| EHV | Extra High Voltage |
| EI | Eugene Island Area Gulf Of Mexico Leasing Area |
| EIA | Environmental Impact Assessment |
| EIA | Environmental Impact Assessment |
| EIA | US Energy Information Administration |
| EIR | Environmental Impact Report |
| EIS | Environmental Impact Statement |
| EL | Electric Log |
| EL | Exploration Licence |
| EL | The Elbow Gulf Of Mexico Leasing Area |
| ELT | Economic Limit Test |
| EM | Electromagnetic |
| EM | Emop Log |
| EMF | Electro Magnetic Fields |
| EMG | Equivalent Mud Gradient |
| EMI | Electromagnetic Inspection |
| EMOP | Emop Well Site Processing Log |
| EMP | Electromagnetic Propagation Log |
| EMT | Electrical Metallic Tubing (Conduit) |
| EMW | Equivalent Mud Weight |
| EN | European Standard |
| EN PI | Enhanced Productivity Index Log |
| ENC | Electronic Navigation Chart |
| ENG | Engineering Log |
| ENGF | Engineer Factual Report |
| ENGPD | Engineering Porosity Data |
| Eni | Ente Nazionale Idrocarburi S.P.A. (Italy) |
| ENJ | Enerjet Log |
| EOFL | End Of Field Life |
| EOR | Enhanced Oil Recovery |
| EOS | Equation Of State |
| EOT | End Of Tubing |
| EOW | End Of Well Report |
| EP | Exploration Plan |
| EPA | Environmental Protection Act |
| EPA | US Environmental Protection Agency |
| EPCI | Engineering, Procurement, Construction, And Installation |
| EPCU | Electrical Power Conditioning Unit |
| EPFS | Electronic Position Fixing System |
| EPIDORIS | Exploration And Production Integrated Drilling Operations And Reservoir Information System |
| EPIRB | Emergency Position Indicating Radio Beacon |
| FINTP | Formation Interpretation |
| FIP | Flow Induced Pulsation |
| FIR | Failure Investigation Reports |
| FIT | Fairing Intervention Tool |
| FIT | Fluid Identification Test |
| FIT | Formation Integrity Test |
| FIT | Formation Integrity Test |
| FIT | Formation Interval Tester |
| FIV | Flow Induced Vibration |
| FIV | Formation Isolation Valve |
| FLAP | Fluid Level Above Pump |
| FLET | Flowline End Termination |
| FLIV | Flowline Isolation Valve |
| FLMPI | Full Length Magnetic Particle Inspection |
| FLMT | Flowline Manifold Termination |
| FLOPR | Flow Profile Report |
| FLOT | Flying Lead Orientation Tool |
| FLOW | Flow And Buildup Test Report |
| FLRA | Field Level Risk Assessment |
| FLS | Fluid Sample |
| FLT | Fault (Geology) |
| FLUT | Full Length Ultrasonic Inspection |
| FM | Flowmeter |
| FMA | Finnish Maritime Administration |
| FMEA | Failure Modes And Effects Analysis |
| FMECA | Failure Modes, Effects, And Criticality Analysis |
| FMI | Formation Micro Imaging Log |
| FMP | Facility Measurement Point |
| FMP | Formation Microscan Report |
| FMS | Formation Multi Scan Log; Formation Micro Scan Log |
| FNL | From North Line |
| FNOS | Final Notice Of Sale |
| FO | Fuel Oil |
| FOET | Further Offshore Emergency Training |
| FOIP | Freedom Of Information And Protection Of Privacy Act |
| FONSI | Findings Of No Significant Impact |
| FOSC | Federal On Scene Coordinator |
| FOSV | Full Opening Safety Valve |
| FP | Frac Pack |
| FPDM | Fracture Potential And Domain Modelling/Mapping |
| FPF | Floating Production Facility |
| FPIT | Free Point Indicator Tool |
| FPL | Flow Analysis Log |
| FPLAN | Field Plan Log |
| FPS | Floating Production System |
| FPSO | Floating Production Storage And Offloading System |
| FPU | Floating Processing Unit |
| FR | Full Requirements |
| FR | US Federal Register |
| FRA | Fracture Log |
| FRARE | Fracture Report |
| FRES | Final Reserve Report |
| FRSB | Fast Response Spill Boat |
| FRU | Fast Response Units |
| FS | Fail Safe |
| FSA | Formal Safety Assessment |
| FSB | Flowline Support Base |
| FSI | Flawless Start Up Initiative |
| FSL | From South Line |
| FSO | Floating Storage Offloading Vessel |
| FSRU | Floating Storage And Regasification Unit |
| FT | Flow Transmitter |
| Ft | Foot (Feet) |
| FT | Formation Tester Log |
| FTA | Fault Tree Analysis |
| FTC | US Federal Trade Commission |
| FTM | Fire Team Member |
| FTP | Flowing Tubing Plug |
| FTP | Flowing Tubing Pressure |
| FTRE | Formation Testing Report |
| FULDI | Full Diameter Study Report |
| FV | Funnel Viscosity Or Float Valve |
| FVF | Formation Volume Factor |
| FWHP | Flowing Wellhead Pressure |
| FWKO | Free Water Knock Out |
| FWL | Free Water Level |
| FWL | From West Line |
| FWR | Final Well Report |
| FWV | Flow Wing Valve |
| G&G | Geology And Geophysics |
| G/C | Gas Condensate |
| G/L | Gas/Liquid |
| GA | General Arrangement (Of Offshore Equipment) |
| Gal | Gallon |
| GAPP | Generally Accepted Accounting Principles |
| GAS | Gas Log |
| GASAN | Gas Analysis Report |
| GBS | Gravity Based Structure |
| GBT | Gravity Base Tank |
| GC | Gas Chromatography |
| GC/MS | Gas Chromatography/Mass Spectrometry |
| GCAT | Government Compliance Action Team |
| GCLOG | Graphic Core Log |
| GDAT | Geodetic Datum |
| GDIP | Geodip Log |
| GDP | Gross Domestic Product |
| GDT | Gas Down To |
| GE | Condensate Gas Equivalent |
| GE | Ground Elevation |
| GEOCH | Geochemical Evaluation |
| GEODY | Geo Dys Log |
| GEOEV | Geochemical Evaluation Report |
| GEOFO | Geological & Formation Evaluation Report |
| GEOL | Geological Surveillance Log |
| GEOP | Geophone Data Log |
| GEOPN | Geological Well Prognosis Report |
| GEOPR | Geological Operations Progress Report |
| GEORE | Geological Report |
| GFCI | Ground Fault Circuit Interrupter |
| GGRG | Gauge Ring |
| GHG | Greenhouse Gas |
| GIIP | Gas Initially In Place |
| GIS | Geographic Information System |
| GJ | Gigajoule |
| GL | Gas Lift |
| GL | Germanischer Lloyd |
| GL | Ground Level |
| GLM | Gas Lift Mandrel |
| Glonass | Global Navigation Satellite System |
| GLR | Gas Liquid Ratio |
| GLV | Gas Lift Valve |
| GMDSS | Global Maritime Distress And Safety System |
| GMT | Greenwich Mean Time |
| GNOME | General NOAA Oil Modeling Environment |
| GOC | Gas Oil Contact |
| GOC | General Operators’ Certificate |
| GOM | Gulf Of Mexico |
| GOMR | Gulf Of Mexico Region |
| GOP | Geological Operations Report |
| GOR | Gas Oil Ratio |
| GOSP | Gas Oil Separation Plant |
| GP | Gravel Pack |
| GPIT | Inclinometry Tool Log |
| GPLT | Geol Plot Log |
| GPRA | The US Government Performance And Results Act |
| GPS | Global Positioning System |
| GPSL | Geo Pressure Log |
| GR | Gamma Ray |
| GR | Ground Level |
| GRAD | Gradiometer Log |
| GRC | Galvanized Rigid Conduit |
| GRE | Ground Elevation |
| GRLOG | Grapholog |
| GRN | Gamma Ray Neutron Log |
| GRP | Glass Reinforced Plastic |
| GRSVY | Gradient Survey Log |
| GRV | Gross Rock Volume |
| GS | Gas Supplier |
| GS | Gel Strength |
| GT | Gross Tonnage |
| GT&C | General Terms And Conditions |
| GTL | Gas To Liquids |
| GTW | Gas To Wire |
| GUI | Graphical User Interface |
| GUN | Gun Set Log |
| GW | Gigawatt |
| GWC | Gas Water Contact |
| Gwh | Gigawatt Hour |
| GWI | Gross Working Interest |
| GWREP | Geo Well Report |
| H2S | Hydrogen Sulfide |
| HA | Hazard Analysis |
| HAP’s | Hazardous Air Pollutants |
| HARP | Hot Spots Analysis And Reporting Program |
| HARP | Hydrocarbons Additional Recovery Program |
| HAZ | Heat Affected Zone |
| HAZCOM | Hazard Communications |
| HAZID | Hazard Identification |
| HAZMAT | Hazardous Materials Response Division Of Noaa |
| HAZOP | Hazard And Operability (Analysis) |
| HAZWOPER | Hazardous Waste Operations And Emergency Response |
| HBL | Hydrostatic Balanced Loading |
| HC | Hydrocarbons |
| HCA | High Consequence Areas |
| HCA | Host Control Area |
| HCCS | Horizontal Clamp Connection System |
| HCM | Horizontal Connection Module |
| HCRF | Hydrographic Chart Raster Format |
| HDA | Helideck Assistant |
| HDT | High Resolution Dipmeter Log |
| HEA | Habitat Equivalency Analysis |
| Heavy oil | Crude Oil With Api Gravity Of 20 Or Less |
| HEC | Hydroxyethylcellulose |
| HEP | Habitat Evaluation Procedure |
| HES | Health, Environment, And Safety |
| HEXT | Hex Diplog |
| HFE | Human Factors Engineering |
| HFL | Hydraulic Flying Lead |
| HGE | Harmonization Group On Ecdis |
| HGS | High (Specific )Gravity Solids |
| HHI | Hirschman Herfindahl Index |
| HHP | High Holding Power (Anchors) |
| HHP | Hydraulic Horsepower |
| HIPPS | High Integrity Pressure Protection System |
| HISC | Hydrogen Induced Stress Cracking |
| HKSR | Hong Kong Shipping Register |
| HL | Hook Load |
| HLID | Hydrocarbon Leak And Ignition Database |
| HLO | Heavy Load Out (Facility) |
| HLO | Helicopter Landing Officer |
| Hmax | Maximum Wave Height |
| HO | Hydrographic Office |
| HP | High Pressure |
| HP | Horsepower |
| HP | Hydrostatic Pressure |
| HP/IP | High Pressure And/Or Intermediate Pressure |
| HPGAG | High Pressure Gauge |
| HPHT | High Pressure, High Temperature |
| HPU | Hydraulic Power Unit |
| HPWBM | High Performance Water Base Mud |
| HQI | Habitat Quality Index |
| Hs | Significant Wave Height |
| HSC | Health & Safety Commission |
| HSE | Health, Safety And Environment |
| HSWA | Health And Safety At Work Act |
| HT | High Temperature |
| HTHP | High Temperature, High Pressure |
| HTM | Heideck Team Member |
| HUD | Hold Up Depth |
| HUET | Helicopter Underwater Escape Training |
| HVDC | High Voltage Direct Current |
| HVI | High Viscosity Index |
| HWDP | Heavy Weight Drill Pipe |
| HYPJ | Hyperjet |
| HYROP | Hydrophone Log |
| Hz | Hertz (Cycles Per Second) |
| I3P | Independent Third Party |
| IACS | International Association Of Classification Societies |
| IADC | International Association Of Drilling Contractors |
| IAIN | International Association Of Institutes Of Navigation |
| IALA | International Association Of Lighthouse Authorities |
| IAPH | International Association Of Ports And Harbors |
| IASST | International Association For Sea Survival Training |
| IBC | Intermediate Bulk Container |
| IBCS | Integrated Bridge Control System |
| IBIA | International Bunker Industry Association |
| IBOP | Inside Blowout Preventer |
| IC | Incident Commander |
| IC | Information Collection |
| ICAB | International Cargo Advisory Bureau |
| ICAP | Installed Capacity |
| ICD | Inflow Control Device |
| ICE | Intercontinental Exchange |
| ICHCA | International Cargo Handling Coordination Association |
| ICoTA | Intervention And Coiled Tubing Association |
| ICP | Intermediate Casing Point |
| ICS | Incident Command System |
| ICS | Institute Of Chartered Shipbrokers |
| ICS | International Chamber Of Shipping |
| ICSU | Integrated Commissioning And Start Up |
| ICV | Integrated Cement Volume |
| ICV | Interval Control Valve |
| ID | Inner Diameter |
| IDC | Intangible Drilling Costs |
| IDLH | Immediately Dangerous To Life Or Health |
| IEA | International Energy Agency |
| IEEE | Institute Of Electrical And Electronics Engineers |
| IEL | Induction Electrical Log |
| IEP | Initial Exploration Plan |
| IEP/DOCD | IEP and Development Operations Coordination Documents |
| IER | Incremental Energy Rate |
| IF | Internal Flush Tool Joint |
| IFO | Intermediate Fuel Oil |
| IFSMA | International Federation Of Ship Masters’ Associations |
| IFTPA | International Forest Product Transport Association |
| IGO | Inter Governmental Organization |
| IGS | Inert Gas System |
| IGU | International Gas Union |
| IHB | International Hydrographic Bureau |
| IHMA | International Harbor Masters’ Association |
| IHO | International Hydrographic Organization |
| IHR | Incremental Heat Rate |
| IHV | Integrated Hole Volume |
| IICL | Institute Of International Container Lessors |
| IIMS | International Institute Of Marine Surveyors |
| IIRT | Initial Incident Response Team |
| IJC | International Joint Commission |
| IJL | Injection Log |
| IL | Induction Log |
| ILI | In Line Inspection |
| ILO | International Labor Organization |
| ILOGS | Image Logs |
| ILTA | International Liquid Terminals Association |
| IMAG | Image Analysis Report |
| IMarE | Institute Of Marine Engineers |
| IMB | International Maritime Bureau |
| IMCA | International Marine Contractors Association |
| IMDG Code | International Maritime Dangerous Goods Code |
| IMF | International Monetary Fund |
| IMLA | International Maritime Lecturers Association |
| IMO | International Maritime Organization |
| IMPA | International Marine Purchasing Association |
| IMPA | International Maritime Pilots’ Association |
| IMT | Intermediate Metal Conduit |
| in | Inch |
| INC | Incident Of Non Compliance |
| INCRE | Incline Report |
| INDWE | Individual Well Record Report |
| INGAA | Interstate Natural Gas Association Of America |
| INJEC | Injection Falloff Log |
| Inmarsat | International Marine Satellite Organization |
| INSUR | Inrun Survey Report |
| Intercargo | International Association Fo Dry Cargo Ship Owners |
| INTERTANKO | International Association Of Independent Tanker Owners |
| INVES | Investigative Program Report |
| IOC | Independent Oil Company |
| IOC | International Oil Company |
| IOLT | Institute Of Logistics And Transport |
| IOPC | International Oil Pollution Fund |
| IOR | Improved Oil Recovery |
| IP | Intellectual Property |
| IP | Intermediate Pressure |
| IP | Internet Protocol |
| IPAA | Independent Petroleum Association Of America |
| IPC | Installed Production Capacity |
| IPE | International Petroleum Exchange |
| IPF | Impact Producing Factors |
| IPO | Initial Public Offering |
| IPPC | Integrated Pollution Prevention And Control |
| IPR | Inflow Performance Relationship |
| IR | Inland Revenue |
| IR | Inspection Report |
| IR | Interpretation Report |
| IRC | Inspection Release Certificate |
| IRS | Indian Register Of Shipping |
| ISDP | Integrated Ship Design And Production |
| ISF | International Shipping Federation |
| ISGOTT | International Safety Guide For Oil Tankers And Terminals |
| ISM | IMO’S International Safety Management (Code) |
| ISMA | International Ship Managers’ Association |
| ISO | International Standards Organization |
| ISSA | International Ship Supplies Association |
| ISU | International Salvage Union |
| ITB | Invitation to Bid |
| ITF | International Transport Workers Federation |
| ITL | Industry Leadership Team (Part Of Pilot) |
| ITOPF | International Tanker Owners Pollution Federation |
| ITP | Inspection And Test Plan |
| ITS | Influx To Surface |
| ITT | Invitation To Tender |
| IUA | International Underwriting Association |
| IUR | Inventory Update Reporting |
| IWCF | International Well Control Federation |
| IWCF | International Well Control Forum |
| IWCF certification | IWCF Blowout Prevention & Well Control Certification |
| IWOCS | Installation/Workover Control System |
| J&A | Junked And Abandoned |
| JAS | Joint Association Survey |
| JB | Junk Basket |
| JHA | Job Hazard Analysis |
| JIP | Joint Industry Project |
| JIT | Just In Time |
| JITF | Joint Industry Task Force |
| JNCC | Joint Nature Conservation Committee |
| JOA | Joint Operating Agreement |
| JRP | Joint Review Panel |
| JSA | Job Safety Analysis |
| JT | Joule Thomson (Effect/Valve/Separator) |
| JU | Jack Up Drilling Rig |
| JU | Jackup |
| JV | Joint Venture |
| JVP | Joint Venture Partners/Participants |
| KB | Kelly Bushing |
| KBE | Kelly Bushing Elevation |
| KBG | Kelly Bushing Height Above Ground Level |
| KD | Kelly Down |
| kh | Permeability Thickness (K Permeability, H Height) |
| kHz | Thousand Hertz (Cycles Per Second) |
| KOP | Kick Off Plug |
| KOP | Kick Off Point Directional Drilling |
| KOP | Kickoff Point |
| KPI | Key Performance Indicator |
| kpsi | Thousand Pounds Per Square Inch |
| KR (or KRS) | Korean Register Of Shipping |
| KRP | Kill Rate Pressure |
| KV | Kilovolt |
| KVA | Kilovolt Ampere |
| KVNR | Dutch Register Of Shipping |
| Kw | Kilowatt |
| KWH | Kilowatt Hour |
| LACT | Lease Automatic Custody Transfer |
| LAH | Lookahead |
| LAOT | Linear Activation Override Tool |
| LARS | Launch & Recovery System |
| Lat | Latitude |
| LAT | Lowest Astronomical Tide |
| lbf | Pounds Force |
| lbm | Pounds Mass |
| LBP | Length Between Perpendiculars |
| LBS | Lifeboat Stations |
| LCB | Longitudinal Centre Of Buoyancy |
| LCD | Liquid Crystal Display |
| LCF | Longitudinal Centre Of Flotation |
| LCL | Lethal Dose (Low) |
| LCM | Lost Circulation Material |
| LCV | Level Control Valve |
| LD | Lay Down (Tubing, Rods, Etc.) |
| LD50 | Median Lethal Dose |
| LDT | Light Displacement Tonnage, Lost During Trans Shipment |
| LEAKL | Leak Detection Log |
| LED | Light Emitting Diode |
| LEEA | Lifting Equipment Engineers Association |
| LEL | Lower Explosive Limit |
| LEM | Lower Explosive Mixture |
| LEO | Low Earth Orbit (Satellite Configuration) |
| LFL | Lower Flammable Limit |
| LGR | Liquid Gas Ratio |
| LGS | Low (Specific )Gravity Solids |
| LIBOR | London Interbank Offered Rate |
| LIFT | Licence Information For Trading |
| LINCO | Liner And Completion Progress Report |
| LIOG | Lithography Log |
| LIT | Lead Impression Tool |
| LKO | Lowest Known Oil |
| LL | Laterolog |
| LMAP | Location Map |
| LMRP | Lower Marine Riser Package |
| LMT | Local Mean Time |
| LMV | Lower Master Valve |
| LN | Land |
| LNG | Liquefied Natural Gas |
| LO | Lubricating Oil |
| LOA | Length Over All |
| LOA | Letter Of Authorisation/Agreement |
| LOC | Letter Of Credit, Letter Of Compliance |
| LODF | Line Outage Distribution Factor |
| LOE | Lease Operating Expenses |
| LOGGN | Logging Whilst Drilling |
| LOGGS | Lincolnshire Offshore Gas Gathering System |
| LOGIC | Leading Oil And Gas Industry Competitiveness |
| LOGRS | Log Restoration Report |
| LOGSM | Log Sample |
| LOL | Limitation Of Owner’S Liability |
| LOLE | Loss Of Load Expectation |
| LOLER | Lifting Operations And Lifting Equipment Regulations |
| LOP | Line Of Position |
| LOPA | Layers Of Protection Analysis |
| LOR | Letter Of Readiness |
| LOS | Law Of The Sea |
| LOS | Line Of Sight |
| LOT | Leak Off Test |
| LOT | Linear Override Tool |
| LOT | Lock Open Tool |
| LOTO | Lock Out Tag Out |
| LP | Limited Partnership |
| LP | Liquid Petroleum |
| LP | Low Pressure |
| LPC | London Processing Centre |
| LPG | Liquefied Petroleum Gas |
| LPH | Litres Per Hour |
| LPWHH | Low Pressure Well Head Housing |
| LQ | Living Quarters |
| LR | Lloyd’S Register |
| LRDP | Long Range Development Plan |
| LRP | Lower Riser Package |
| LSA | Life Saving Appliances |
| LSBGR | Long Spacing Bhc Gr Log |
| LSD | Land Surface Datum |
| LSFO | Loss Sulfur Fuel Oil |
| LSH | Level Safety High (Sensor) |
| LSL | Level Safety Low (Sensor) |
| LSSON | Long Spacing Sonic Log |
| LST | Local Standard Time |
| LT | Linear Time Or Lag Time |
| LTI(FR) | Lost Time Incident (Frequency Rate) |
| LUMI | Luminescence Log |
| LVEL | Linear Velocity Log |
| LVI | Low Viscosity Index |
| LVOT | Linear Valve Override Tool |
| LW | Low Water |
| LWD | Logging While Drilling |
| LWL | Length On Water Line |
| LWOP | Logging Well On Paper |
| LWR | Lazy Wave Catenary Riser |
| m | Metre |
| M&R | Measurement And Regulation |
| M/V | Mobile Vessel |
| MAASP | Maximum Acceptable [Or Allowable] Annular Surface Pressure |
| MAC | Multipole Acoustic Log |
| MACL | Multiarm Caliper Log |
| MAGST | Magnetostratigraphic Report |
| MAOP | Maximum Allowable Operating Pressure |
| MARA | Maralog |
| Marisat | Maritime Satellite System |
| MARPOL | International Convention For The Prevention Of Pollution From Ships |
| MARSEC | Maritime Security |
| MASP | Maximum Allowable Surface Pressure |
| MASP | Maximum Anticipated Surface Pressure |
| MASPcc | Maximum Anticipated Surface Pressure For The Completion Case |
| MAWOP | Maximum Allowable Wellhead Operating Pressure |
| MAWP | Maximum Actual Working Pressure |
| MAWP | Maximum Allowable Working Pressure |
| MAWP | Maximum Allowable Working Pressure |
| Mbbls | Thousand Barrels |
| Mbbls/d | Thousand Barrels Per Day |
| Mbd | Thousand Barrels (Of Oil) Per Day |
| Mbod | Thousand Barrels Of Oil Per Day |
| Mboe | Thousand Barrels Of Oil Equivalent |
| Mboe/d | Thousand Barrels Of Oil Equivalent Per Day |
| MBRO | Multi Bore Restriction Orifices |
| MBT | Methylene Blue Test |
| MCA | Marine Coastguard Agency |
| MCC | Master Control Center |
| MCC | Molded Case Circuit Breaker |
| MCD | Mechanical Completion Dossier |
| MCE | Maximum Credible Earthquakes |
| Mcf | Thousand Cubic Feet (Of Gas) |
| MCFD | Thousand Cubic Feet Per Day |
| Mcfe | Thousand Cubic Feet Of Natural Gas Equivalent |
| MCFPD | One Thousand Cubic Feet Of Gas Per Day |
| MCHE | Main Cryogenic Heat Exchanger |
| MCM | Manifold Choke Module |
| MCP | Manifold Compression Platform |
| MCS | Manifold & Connection System |
| MCS | Master Control Station |
| MD | Measured Depth |
| MD | Measurements/Drilling Log |
| mD | Millidarcy, Measure Of Permeability, With Units Of Area |
| MDEA | Methyl Diethanolamine (Amdea) |
| MDL | Methane Drainage Licence |
| MDO | Marine Diesel Oil |
| MDSS | Measured Depth Sub Sea |
| MDT | Modular Formation Dynamic Tester |
| MEA | Monoethanolamine |
| MEG | Mono Ethylene Glycol |
| MEM | Mechanical Earth Model |
| MEO | Medium Earth Orbit (For Satellite Configuration) |
| MEPC | Marine Environment Protection Committee |
| MEPRL | Mechanical Properties Log |
| MERCR | Mercury Injection Study Report |
| MERG | Merge Fdc/Cnl/Gamma Ray/Dual Laterolog/Micro Sfl Log |
| MERSAR | Merchant Ship Search And Rescue Manual |
| MEST | Mest Log |
| MF | Marsh Funnel (Mud Viscosity) |
| MFCT | Multifinger Calliper Tool |
| Mgd | Million Gallons Per Day |
| MGL | Magnelog |
| MGN | Marine Guidance Note |
| MGO | Marine Gas Oil |
| Mgy | Million Gallons Per Year |
| MH | Methane Hydrate (Methane Clathrate, Or Fire Ice) |
| MHA | Major Hazards Analysis |
| MI | Matagorda Island Area Gulf Of Mexico Leasing Area |
| MI | Mechanical Integrity |
| MI | Mineral Interest |
| MIFR | Mini Frac Log |
| MINL | Minilog |
| MIPAL | Micropalaeo Log |
| MIRU | Move In And Rig Up |
| MIS | Management Information System |
| MIST | Minimum Industry Safety Training |
| MIYP | Maximum Internal Yield Pressure |
| MJ | Megajoule |
| mKB | Meters Below Kelly Bushing |
| ML | Microlog, Or Mud Log |
| ML | Multilateral |
| MLF | Marine Loading Facility |
| MLH | Mud Liner Hanger |
| MLL | Microlaterolog |
| MLLW | Mean Lower Low Water |
| MSIPC | Multi Stage Inflatable Packer Collar |
| MSL | Mean Sea Level |
| MSL | Micro Spherical Log |
| MSP | Maximum Source Pressure |
| MSRC | Marine Spill Response Corporation |
| MSS | Magnetic Single Shot |
| MST | Mst Exp Resistivity Log |
| MT | Magnetotellurics |
| MT | Metric Tons |
| MTBE | Methyl Tertiary Butyl Ether |
| MTLP | Mini Tension Leg Platform |
| MTR | Material Test Reports |
| MTSRU | Maritime Transportation System Recovery Unit |
| MTT | Mtt Multi Isotope Trace Tool |
| MTTF | Mean Time To Failure |
| MU | Mustang Island Area Gulf Of Mexico Leasing Area |
| MUD | Mud Log |
| MUDT | Mud Temperature Log |
| MuSol | Mutual Solvent |
| MUX | Make Up Crossover [Crossover X] |
| MVA | Megavolt Amperes |
| MVB | Master Valve Block On Xmas Tree |
| MW | Megawatts |
| MW | Mud Weight |
| MWA | Military Warning Area |
| MWCC | Marine Well Containment Co. |
| MWD | Measurement While Drilling |
| MWDRE | Measurement While Drilling Report |
| MWS | Marine Warranty Survey |
| N | Newton |
| N/S | North/South |
| N02 | Nitrogen Dioxide |
| N0X | Nitrogen Oxides |
| NAAQS | National Ambient Air Quality Standards |
| NACE | National Association Of Corrosion Engineers |
| NAFTA | North American Free Trade Agreement |
| NAPF | Non Aqueous Phase Fluid |
| NAVIG | Navigational Log |
| NAVTEX | Navigational And Meteorological Warning Broadcast Service |
| NB | Nominal Bore |
| NCOB | No Cargo On Board |
| NCP | US National Oil And Hazardous Substance Pollution Contingency Plan |
| NCR | Nonconformance Report |
| NDE | Non Destructive Examination |
| NDT | Nondestructive Testing |
| NE | Northeast |
| NEB | National Energy Board |
| NEPA | US National Environmental Policy Act |
| NEUT | Neutron Log |
| NFI | No Further Investment |
| NFTZ | Non Free Trade Zone |
| NFW | New Field Wildcat, Lahee Classification |
| NG | Natural Gas |
| NGDC | National Geoscience Data Centre (United Kingdom) |
| NGH | Natural Gas Hydrate (Methane Clathrate, Or Fire Ice) |
| NGL | Natural Gas Liquids |
| NGLQT | Ngt Ql Log |
| NGO | Non Governmental Organisation |
| NGPL | Natural Gas Pipeline |
| NGR | Natural Gamma Ray |
| NGRC | National Geological Records Centre (United Kingdom) |
| NGS | Ngs Log |
| NGSS | Ngs Spectro Log |
| NGT | Ngt Log |
| NGTLD | Ngt Ldt Ql Log |
| NGTR | Ngt Ratio Log |
| NHDA | National Hydrocarbons Data Archive (United Kingdom) |
| NHPV | Net Hydrocarbon Pore Volume |
| NI | The Nautical Institute |
| NIHQ | Nautical Institute Headquarters, London |
| NIOSH | National Institute For Occupational Safety |
| NITC | Normal Incremental Transfer Capability |
| NK or NKK (or ClassNK) | Nippon Kaiji Kyokai (Japan’S Ship Classification Society) |
| NM | Nautical Mile |
| NMEA | National Marine Electronics Association |
| NMFS | National Marine Fisheries Services (Noaa Fisheries) |
| NMHC | Non Methane Hydrocarbons |
| NMR | Nuclear Magnetic Resonance |
| NMVOC | Non Methane Volatile Organic Compounds |
| NNR | National Nature Reserve |
| NNS | Northern North Sea |
| NO | Nitric Oxide |
| NOAA | National Oceanic And Atmospheric Administration |
| NOC | National Oil Company |
| NOD | Notice Of Determination |
| NOGEPA | Netherlands Oil And Gas Exploration And Production Association |
| NOI | Notice Of Inquiry |
| NOI | Notice Of Intent |
| NOIA | National Ocean Industries Association |
| NOISL | Noise Log |
| NOP | Notice Of Preparation |
| NOR | Notice Of Readiness |
| NORM | Naturally Occurring Radioactive Material |
| NOW | Non Hazardous Oilfield Waste |
| NOX | Nitrogen Oxides |
| NP | Non Producing Well (As Opposed To P Producing Well) |
| NPD | Norwegian Petroleum Directorate |
| NPDES | National Pollutant Discharge Elimination System |
| NPFC | US National Pollution Funds Center |
| NPR | Notice Of Proposed Rulemaking |
| NPREP | National Preparedness For Response Exercise Program |
| NPS | Nominal Pipe Size (Sometimes Ns) |
| NPSH | Net Positive Suction Head |
| NPT | Nonproductive Time |
| NPV | Net Present Value |
| NPW | New Pool Wildcat, Lahee Classification |
| NRC | National Response Center |
| NRDA | National Resource Damage Assessment |
| NRI | Net Revenue Interest |
| NRT | National Response Team |
| NRV | Non Return Valve |
| NSA | Norwegian Shipowners’ Association |
| NSDG | North Sea Decommissioning Group |
| NT | Net Tonnage |
| NTE | Not To Exceed |
| NTHF | Non Toxic High Flash |
| NTL | Notice To Lessees And Operators |
| NTO | National Training Organization |
| NTP | National Toxicology Program |
| NTSB | US National Transportation Safety Board |
| NTU | Nephelometric Turbidity Unit |
| NUMAR | Magnetic Resonance Image Log |
| NUMAST | National Union Of Marine, Aviation & Shipping Transport Officers |
| NWI | Net Working Interest |
| NWR | National Wildlife Refuge |
| NYMEX | New York Mercantile Exchange |
| O&G | Oil And Gas |
| O&M | Operations And Maintenance |
| O/B | On Board |
| OAPEC | Organization Of Arab Petroleum Exporting Countries |
| OB | Overbalanced |
| OBC | Ocean Bottom Cable (Seismic Collection) |
| OBCS | Ocean Bottom Cable System |
| OBDTL | Obdt Log |
| OBEVA | Obdt Evaluation Report |
| OBM | Oil Based Mud |
| OBO | Ore/Bulk/Oil Carrier |
| OCA | Offshore Contractors Association |
| OCIMF | Oil Companies International Marine Forum |
| OCL | Quality Control Log |
| OCR | Optical Character Recognition |
| OCS | Outer Continental Shelf |
| OCSLA | Outer Continental Shelf Lands Act |
| OCTG | Oil Country Tubular Goods |
| OD | Outer Diameter |
| ODT | Oil Down To |
| OECD | Organization For Economic Co Operation And Development |
| OEM | Original Equipment Manufacturer |
| OEM | Original Equipment Manufacturer |
| OES | Office Of Emergency Services |
| OFST | Offset Vertical Seismic Profile |
| OG | Oil And Gas Directorate |
| OGITF | Oil & Gas Industry Task Force |
| OGML | Oil, Gas And Mineral Lease |
| OGP | International Association Of Oil & Gas Producers |
| OH | Open Hole |
| OH | Openhole Log |
| OHC | Open Hole Completion |
| OHGP | Openhole Gravel Pack |
| OIAC | Oil Industry Advisory Committee |
| OIM | Offshore Installation Manager |
| OIP | Oil In Place |
| OLF | Norwegian Oil Industry Association |
| OMB | US Office Of Management And Budget |
| OMBO | One Man Bridge Operation |
| OML | Oil Mining Lease |
| OMRL | Oriented Micro Resistivity Log |
| ONAN | Oil Natural Air Natural Cooled Transformer |
| ONRR | Office Of Natural Resources Revenue |
| OOC | Offshore Operators Committee |
| OOD | Officer Of The Deck |
| OOE | Offshore Operation Engineer |
| OOIP | Original Oil In Place |
| OOT | Out Of Tolerance |
| OOW | Officer Of The Watch |
| OP | Operating Procedure |
| OPA | US Oil Pollution Act Of 1990 |
| OPEC | Organisation Of Petroleum Exporting Countries |
| OPEX | Operating Expenditure |
| OPITO | Offshore Petroleum Industry Training Organization |
| OPL | Operations Log |
| OPPR | Oil Pollution Preparedness And Response |
| OPR | Office Of Planning And Research |
| OPRC | International Convention On Oil Pollution Preparedness, Response And Co Operation |
| OPRES | Overpressure Log |
| OPS | Operations Report |
| OPS | US Office Of Pipeline Safety |
| ORICO | Oriented Core Data Report |
| ORM | Other Regulated Materials (A Dot Materials Classification) |
| ORRI | Overriding Royalty Interest |
| OS&D | Over, Short & Damage (Report) |
| OSC | On Scene Coordinator |
| OSCP | Oil Spill Contingency Plan |
| OSFR | Oil Spill Financial Responsibility |
| OSHA | Occupational Safety And Health Administration |
| OSLTF | Oil Spill Liability Trust Fund |
| OSPR | Oil Spill Prevention And Response |
| OSRA | Oil Spill Risk Assessment |
| OSRAM | Oil Spill Risk Analysis Model |
| OSRO | Oil Spill Response Organization |
| OSRP | Oil Spill Response Plan |
| OSRV | Oil Spill Response Vessel |
| OSV | Offshore Support Vessel |
| OT | A Well On Test |
| OT | Off Tree |
| OT | Overtime |
| OTC | Offshore Technology Conference |
| OTDR | Optical Time Domain Reflectometry |
| OTIP | Operational Testing Implementation Plan |
| OTJ | On The Job |
| OTL | Operations Team Leader |
| OTO | Oil Taxation Office (Of The Inland Revenue) |
| OUT | Oil Up To |
| OUT | Outpost, Lahee Classification |
| OVCH | Oversize Charts |
| OVID | Offshore Vessel Inspection Database |
| OVSP | Offset Vertical Seismic Profiling |
| OWC | Oil Water Contact |
| OWR | Oil/Water Ratio |
| P | Pressure |
| P | Producing Well (As Opposed To Np Non Producing) |
| P | Wave Compressional Wave |
| P&A | Plug And Abandon |
| P&A | Plugged And Abandoned (Of A Well) |
| P&I (or P and I) | Protection And Indemnity Club |
| P&ID | Piping And Instrument Diagrams |
| PAC | Pacific Ocs Region |
| PADPRT | Pressure Assisted Drillpipe Running Tool |
| PAGA | Public Address General Alarm |
| PAH | Poly Aromatic Hydrocarbons |
| PAL | Palaeo Chart |
| PALYN | Palynological Analysis Report |
| PAM | Passive Acoustic Monitoring |
| Panamax | Ships Able To Transit, And Allowed Transit, Of The Panama Canal |
| PAR | Pre Assembled Rack |
| PART | Program Assessment Rating Tool |
| PAU | Pre Assembled Unit |
| PB | St. Petersburg Gulf Of Mexico Leasing Area |
| PBD | Pason Billing System |
| PBDMS | Playback Dmsls Log |
| PBR | Polished Bore Receptacle (Component Of A Completion String) |
| PBTD | Plug Back Total Depth |
| PBU | Pressure Build Up (Applies To Integrity Testing On Valves) |
| PCB | Poly Chlorinated Biphenyl |
| PCCL | Perforation Casing Collar Locator Log |
| PCDM | Power And Control Distribution Module |
| PCKR | Packer |
| PCOLL | Perforation And Collar |
| PCP | Progressive Cavity Pump |
| PCV | Pressure Control Valve |
| PDC | Perforation Depth Control |
| PDC | Polycrystalline Diamond Compact (Drillbit) |
| PDG | Permanent Downhole Gauge |
| PDG/PDHG | Permanent Downhole Gauge |
| PDKL | Pdk Log |
| PDKR | Pdk 100 Report |
| PDM | Positive Displacement Motors |
| PDNP | Proved Developed Not Producing |
| PDP | Proved Developed Reserves |
| PDPM | Power Distribution Protection Module |
| PE | Professional Engineer |
| PEA | Palaeo Environment Study Report |
| PEDL | Petroleum Exploration & Development Licence |
| PEL | Permissible Exposure Limit |
| PENL | Penetration Log |
| PEP | Pep Log |
| PERDC | Perforation Depth Control |
| PERFO | Perforation Log |
| PERM | Permeability |
| PERML | Permeability Log |
| PESA | Petroleum Equipment Suppliers Association |
| PESBG | Petroleum Exploration Society Of Great Britain |
| PETA | Petrographical Analysis Report |
| PETD | Petrographic Data Log |
| PETLG | Petrophysical Evaluation Log |
| PETPM | Petrography Permeametry Report |
| PETRP | Petrophysical Evaluation Report |
| PF | Platform |
| PFC | Pfc Log |
| PFD | Position Fixing Device, Personal Floatation Device |
| PFD | Process Flow Diagrams |
| PFE | Plate/Frame Heat Exchanger |
| PFHE | Plate Fin Heat Exchanger |
| PFPG | Perforation Plug Log |
| PFREC | Perforation Record Log |
| PG | Pressure Gauge (Report) |
| PGB | Permanent Guide Base |
| PGOR | Produced Gas Oil Ratio |
| PH | Phasor Log |
| PHA | Process Hazards Analysis |
| PHASE | Phasor Processing Log |
| Phi | Porosity |
| PHMSA | US Department Of Transportation Pipeline And Hazardous Materials Safety Administration |
| PHOL | Photon Log |
| PHYFM | Physical Formation Log |
| PI | Pressure Indicator |
| PI | Productivity Index |
| PIANC | Permanent International Association Of Navigation Congresses |
| PIC | Person In Charge |
| PILOT | Ogitf Successor |
| PINC | Potential Incident Of Non Compliance |
| PINTL | Production Interpretation |
| PIP | Pipe In Pipe |
| PIT | Pressure Integrity Test |
| PJ | Petajoule |
| PL | Pipeline |
| PL | Production Licence |
| PLB | Personal Locator Beacon |
| PLC | Programmable Logic Controller |
| PLEM | Pipeline End Manifold |
| PLES | Pipeline End Structure |
| PLET | Pipeline End Terminations |
| PLG | Plug Log |
| PLS | Position Location System |
| PLT | Production Logging Tool |
| PLTQ | Production Logging Tool Quicklook Log |
| PLTRE | Production Logging Tool Report |
| PM | Particulate Matter |
| PM | Project Management |
| PM10 | Particulate Matter Less Than 10 Microns In Diameter |
| PM2.5 | Particulate Matter Less Than 2.5 Microns In Diameter |
| PMI | Positive Material Identification |
| PMS | Planned Maintenance System |
| PMV | Production Master Valve |
| PN | North Padre Island Area Gulf Of Mexico Leasing Area |
| POB | Personnel On Board |
| POBM | Pseudo Oil Based Mud |
| POF | Permanent Operations Facility |
| PON | Petroleum Operations Notice |
| POOH | Pull Out Of Hole |
| POOH / POH | Pull Out Of Hole |
| POOI | Pacific Operators Offshore Incorporated |
| POR | Density Porosity Log |
| POSFR | Post Fracture Report |
| POSTW | Post Well Appraisal Report |
| POSVCM | Pipeline Oil Spill Volume Computer Model |
| POSWE | Post Well Summary Report |
| POV | Pressure Operated Valves |
| PP | Dxc Pressure Plot Log |
| PP | Pore Pressure |
| PP | Pump Pressure |
| PPA | Pounds Of Proppant Added |
| ppb | Parts Per Billion |
| ppcf | Pounds Per Cubic Foot |
| PPE | Personal Protective Equipment |
| PPE | Preferred Pressure End |
| ppg | Pounds Per Gallon |
| PPI | Post Pipelay Installation |
| PPI | Post Production Inspection/Intervention |
| ppm | Parts Per Million |
| PPS | Production Packer Setting |
| ppt | Parts Per Thousand |
| pptf | Pounds (Per Square Inch) Per Thousand Feet (Of Depth) |
| PR | Pully Ridge Gulf Of Mexico Leasing Area |
| PR2 | Testing Regime To Api6A Annex F |
| PRA | Probabilistic Risk Assessment |
| PRA | Production Reporting & Allocation |
| PRCI | Pipeline Research Council International, Inc. |
| PREC | Perforation Record |
| PRESS | Pressure Report |
| PROD | Production Log |
| PROTE | Production Test Report |
| PROX | Proximity Log |
| PRS | Polish Register Of Shipping |
| PRSRE | Pressure Gauge Report |
| PRT | Petroleum Revenue Tax |
| PS | South Padre Island Gulf Of Mexico Leasing Area |
| PSA | Production Sharing Agreement |
| PSAC | Petroleum Services Association Of Canada |
| PSANA | Pressure Analysis |
| PSC | Port State Control |
| PSC | Production Sharing Contract |
| PSD | Planned Shut Down |
| PSD | Prevention Of Significant Deterioration |
| PSE | Pressure Safety Element |
| PSH | Pressure Safety High (Sensor) |
| PSHL | Pressure Safety High/Low |
| psi | Pounds Per Square Inch |
| psia | Pounds Per Square Inch (Absolute) |
| psig | Pounds Per Square Inch (Gauge) |
| PSL | Pressure Safety Low |
| PSL | Product Specification Level |
| PSL | Product/Service Line |
| PSLOG | Pressure Log |
| PSM | Process Safety Management |
| PSO | Protected Species Observer |
| PSP | Pseudostatic Spontaneous Potential |
| PSPL | Psp Leak Detection Log |
| PSQ | Plug Squeeze Log |
| PSR | Pipe Slip Ram |
| PSR | Pre Startup Review |
| PST | Pst Log |
| PSV | Pipe Supply Vessel |
| PSV | Pressure Safety Valve |
| PSVAL | Pressure Evaluation Log |
| PTA/S | Pipeline Termination Assembly/Structure |
| PTO | Permit To Operate |
| PTSET | Production Test Setter |
| PTTC | Petroleum Technology Transfer Council, United States |
| PTW | Permit To Work |
| PU | Pick Up (Tubing, Rods, Power Swivel, Etc.) |
| PUD | Proved Undeveloped Reserves |
| PUN | Puncher Log |
| PUR | Plant Upset Report |
| PUWER | Provision And Use Of Work Equipment Regulations |
| PV | Plastic Viscosity |
| PV | Pore Volume |
| PV | Pressure/Vacuum |
| PVC | Polyvinyl Chloride |
| PVC | Pressure Control Valve |
| PVSV | Pressure Vacuum Safety Valves |
| PVT | Pressure Volume Temperature |
| PVTRE | Pressure Volume Temperature Report |
| PW | Produced Water |
| PWB | Production Wing Block (Xt) |
| PWHT | Post Weld Heat Treat |
| PWRI | Produced Water Re Injection |
| PWV | Production Wing Valve |
| QA | Quality Assurance |
| QA/QC | Quality Assurance/Quality Control |
| QAE | Quality Assurance Engineer |
| QC | Quality Control |
| QCR | Quality Control Report |
| QF | Qualifying Facility |
| QHSE | Quality, Health, Safety, And Environmental |
| QI | Qualified Individual |
| QL | Quicklook Log |
| QR | Quality Ranking |
| QRA | Quantitative Risk Assessment |
| QUAD | Quadrillion Btus |
| R&D | Records And Documentation |
| R&D | Research And Development |
| R&R | Roles And Responsibilities |
| RAC | Ratio Curves |
| RACI | Responsible / Accountable / Consulted / Informed |
| RAM | Reliability, Availability, And Maintainability |
| RAWS | Raw Stacks Vsp Log |
| RBP | Retrievable Bridge Plug |
| RCA | Root Cause Analysis |
| RCC | Rescue Coordination Centre |
| RCCD | Reverse Circulation Centre Discharge |
| RCD | Rotating Control Device |
| RCDS | Raster Chart Display Systems |
| RCI | Reservoir Characterization Instrument |
| RCKST | Rig Checkshot |
| RCL | Retainer Correlation Log |
| RCM | Reliability Centred Maintenance |
| RCR | Remote Component Replacement (Tool) |
| RCRA | US Resource Conservation And Recovery Act |
| RCU | Remote Control Unit |
| RDF | Radio Direction Finder |
| RE | Pe Re Perforation Report |
| RE | Reservoir Engineer |
| REACH | Registration, Evaluation, Authorization, And Restriction Of Chemicals |
| REL | Recommended Exposure Limit |
| RENC | Regional Electronic Navigational Chart Coordinating Centre |
| REOR | Reorientation Log |
| RESAN | Reservoir Analysis |
| RESEV | Reservoir Evaluation |
| RESFL | Reservoir Fluid |
| RESI | Resistivity Log |
| RESL | Reservoir Log |
| RESOI | Residual Oil |
| REWL | Reservoir Evaluation,Wireline |
| REZ | Renewable Energy Zone (United Kingdom) |
| RF | Radio Frequency |
| RF | Range Finder |
| RF | Recovery Factor |
| RFI | Request For Interest |
| RFI | Requests For Inspection |
| RFID | Radio Frequency Identification |
| RFLNG | Ready For Liquefied Natural Gas |
| RFMTS | Repeat Formation Tester |
| RFSU | Ready For Start Up |
| RFT | Repeat Formation Tester |
| RFTRE | Repeat Formation Tester Report |
| RFTS | Repeat Formation Tester Sample |
| RI | Royalty Interest |
| RIGMO | Rig Move |
| RIH | Run In Hole |
| RIK | Replacement In Kind |
| RINA | Royal Institution Of Naval Architects |
| RIR | Recordable Incident Rate |
| RITT | Riser Insertion Tube (Tool) |
| RK | Rankin Gulf Of Mexico Leasing Area |
| RKB | Rotary Kelly Bushings |
| RLOF | Rock Load Out Facility |
| RMC | Rigid Metal Conduit |
| RMLC | Request For Mineral Land Clearance |
| RMP | Reservoir Management Plan |
| RMS | Ratcheting Mule Shoe |
| RMT | National Union Of Rail, Maritime And Transport Workers |
| RN | Release Notes |
| RNC | Raster Navigational Chart |
| RNR | Romanian Maritime Register Of Shipping |
| RNT | Rnt Log |
| Ro | Ro Roll On/Roll Off |
| ROA | Return Of Assets |
| ROB | Remain On Board (Cargo, Bunkers) |
| SBM | Synthetic Based Mud |
| SBT | Segmented Bond Tool |
| SC | Seismic Calibration |
| SCADA | Supervisory Control And Data Acquisition (System) |
| SCAL | Special Core Analysis |
| SCAP | Scallops Log |
| SCBA | Self Contained Breathing Apparatus |
| SCDES | Sidewall Core Description |
| SCE | Safety Critical Equipment |
| scf | Standard Cubic Feet (Of Natural Gas) |
| SCHLL | Schlumberger Log Also Schlo, Schlu |
| SCM(MB) | Subsea Control Module (Mounting Base) |
| SCO | Standard Cost Obligation |
| SCO | Synthetic Crude Oil |
| SCOPIC | Special Compensation P&I Clause |
| SCOTUS | Supreme Court Of The United States |
| SCP | Sustained Casing Pressure |
| SCR | Spot Check Report |
| SCR | Steel Catenary Riser |
| SCR | Special Casualty Representative (P&I) |
| SCRS | Sidewall Cores |
| SCSSV | Surface Controlled Subsurface Safety Valve |
| SCUBA | Self Contained Underwater Breathing Apparatus |
| SD | Dynamic Positioning Semisubmersible |
| SD | Sonic Density |
| SDFD | Shut Down For Day |
| SDFN | Shut Down For Night |
| SDIC | Sonic Dual Induction |
| SDL | Supplier Document List |
| SDM/U | Subsea Distribution Module/Unit |
| SDPBH | Sdp Bottom Hole Pressure Report |
| SDT | Step Draw Down Test (Sometimes Sddt) |
| SDU/M | Subsea Distribution Unit/Module |
| SDV | Shutdown Valve |
| SDW | Summer Dead Weight |
| SEA | Site Specific Environmental Assessment |
| SEA | Special End Area |
| SEA | Strategic Environmental Assessment (United Kingdom) |
| SEAL | Shearwater Elgin Area Line |
| SEC | US Securities And Exchange Commission |
| SECGU | Section Gauge Log |
| SEDHI | Sedimentary History |
| SEDIM | Sedimentology |
| SEDL | Sedimentology Log |
| SEDRE | Sedimentology Report |
| SEG | Society Of Exploration Geophysicists |
| SEIR | Supplemental Environmental Impact Report |
| SEIS | Supplemental Environmental Impact Statement |
| SEM | Subsea Electronics Module |
| SEMI | Semisubmersible, Semi (or Semi Sub) Semi Submersible Drilling Rig |
| SEMP | Safety And Environmental Management Plan |
| SEMS | Safety And Environmental Management System Policy |
| SENC | System Electronic Navigational Chart |
| SEPAR | Separator Sampling Report |
| SEQSU | Sequential Survey |
| SES | Satellite Earth Station |
| SES | Seafarers’ Education Service |
| SFEIS | Supplemental Final Environmental Impact Statement |
| SFL | Steel Flying Lead |
| SFV | Straight Fixed Variable |
| SG | Static Gradient |
| SGS | Steel Gravity Substructure |
| SGSI | Shell Global Solutions International |
| SGUN | Squeeze Gun |
| SHA | Sensor Harness Assembly |
| SHARP | Sustainable Hydrocarbons Additional Recovery Programme |
| SHDT | Stratigraphic High Resolution Dipmeter Tool |
| SHL | Surface Hole Location |
| SHO | Stab And Hinge Over |
| SHOCK | Shcok Log |
| SHOWL | Show Log |
| SI | Shut In |
| SI/TA | Shut In/Temporarily Abandoned |
| SIC | Standard Industrial Classification |
| SICP | Shut In Casing Pressure |
| SIDPP | Shut In Drill Pipe Pressure |
| SIDSM | Sidewall Sample |
| SIGTTO | Society Of International Gas Tanker And Terminal Operators |
| SIMCON | Simultaneous Construction |
| SIMOPS | Simultaneous Operations |
| SIP | Shut In Pressure |
| SIPES | Society Of Independent Professional Earth Scientists, United States |
| SIRE | Ship’S Inspection Report |
| SIS | Safety Instrumented Systems |
| SIT | System Integration Test Fr Sit Field Representation Sit |
| SITHP | Shut In Tubing Hanger/Head Pressure (Another Term For Cithp) |
| SITP | Shut In Tubing Pressure |
| SITT | Single Tt Log |
| SIWHP | Shut In Well Head Pressure |
| Sjofartsverket | Swedish Register Of Shipping, Swedish Maritime Administration |
| SKPLT | Stick Plot Log |
| SL | Seismic Lines |
| SLCO | Saudi Light Crude Oil (Benchmark Crude) |
| SLS | Sls Gr Log |
| SLT | Slt Gr Log |
| SM | South Marsh Island Gulf Of Mexico Leasing Area |
| SMA | Small Amount |
| SMarT | Support For Maritime Training Scheme |
| SMB | Santa Maria Basin |
| SMC | Safety Management Certificate |
| SME | Small And Medium Sized Enterprises |
| SME | Subject Matter Expert |
| SMEs | Small And Medium Sized Enterprises |
| SMI | South Marsh Island Gulf Of Mexico Leasing Area |
| SMLS | Seamless Pipempp |
| SMO | Suction Module |
| SMPC | Subsea Multiphase Pump |
| SMS | Safety Management Systems |
| SN | Seat Nipple |
| SNAM | Societá Nazionale Metanodotti Now Snam S.P.A. (Italy) |
| SNG | Synthetic Natural Gas |
| SNIP | Scotland Northern Ireland Pipeline |
| SNP | Sidewall Neutron Porosity |
| SNS | Southern North Sea |
| SO | Oil Saturation |
| SO2 | Sulfur Dioxide |
| SO3 | Oxides Of Sulfur |
| SOBM | Synthetic Oil Based Mud |
| SOC | Statement Of Overriding Consideration |
| SOLAS | International Convention For Safety Of Life At Sea |
| SONCB | Sonic Calibration Log |
| SONRE | Sonic Calibration Report |
| SONS | Spills Of National Significance |
| SONWR | Sonic Waveform Report |
| SONWV | Sonic Waveform Log |
| SOO | Suspension Of Operation |
| SOP | Standard Operating Procedure |
| SOP | Suspension Of Production |
| SOPEP | Shipboard Oil Pollution Emergency Plan |
| SOSC | State On Scene Coordinator |
| SOSREP | Secretary Of State’S Representative For Marine Salvage And Intervention |
| Sour | Oil/Gas With High Sulfur Content |
| SOW | Statements Of Work |
| SOW _ Slip | On Wellhead |
| SP | Shot Point (Geophysics) |
| SP | South Pass Area Gulf Of Mexico Leasing Area |
| SP | Spontaneous Potential (Well Log) |
| SPA | Special Protection Area |
| SPAR | Floating Production System |
| SPBM | Single Point Buoy Mooring System |
| SPCAN | Special Core Analysis |
| SPCC | Spill Prevention Control And Countermeasures |
| SPCCP | Spill Prevention Control And Countermeasure Plan |
| SPCP | Spill Prevention And Cleanup Plan |
| SPE | Society Of Petroleum Engineers |
| SPEAN | Spectral Analysis |
| SPEL | Spectralog |
| spf | Shots Per Foot |
| SPFM | Single Phase Flow Meter |
| SPH | Sph Log |
| SPI | Ship Port Interface |
| SPM | Side Pocket Mandrel Or Strokes Per Minute |
| SPM | Single Point Mooring |
| SPMT | Self Propelled Modular Transporter |
| SPOP | Spontaneous Potential Log |
| SPP | Stand Pipe Pressure |
| SPR | US Strategic Petroleum Reserve |
| SPROF | Seismic Profile |
| SPS | Submerged Production System |
| SPS | Subsea Production Systems |
| SPT | Shallower Pool Test, Lahee Classification |
| SPWLA | Society Of Petrophysicists And Well Log Analysts |
| SQL | Siesmic Quicklook Log |
| SR | Shear Rate |
| SRD | Seismic Reference Datum |
| SREC | Seismic Record Log |
| SRL | Self Retracting Lifelines/Div> |
| SRT | Site Receival Test |
| SS | Semisubmersible |
| SS | Ship Shoal Area Gulf Of Mexico Leasing Area |
| SS | Stainless Steel |
| SS | Subsea |
| SSANC | Fixed Anchors Or Mooring Piles |
| SSCC | Sulphide Stress Corrosion Cracking |
| SSCP | Subsea Cryogenic Pipeline |
| SSCS | Subsea Control System |
| SSCSV | Subsurface Controlled Safety Valve |
| SSCV | Subsea Control Valves |
| SSD | Sliding Sleeve Door |
| SSD | Sub Sea Level Depth |
| SSE | Short Service Employee |
| SSG | Sidewall Sample Gun |
| SSIV | Subsea Isolation Valve |
| SSM | Subsea Manifolds |
| SSMAR | Synthetic Seismic Marine Log |
| SSMNF | Subsea Manifold |
| SSO | Ship Security Officer |
| SSPLR | Subsea Pig Launcher/Receiver |
| SSRRC | System Safety And Reliability Review Committee |
| SSSL | Supplementary Seismic Survey Licence |
| SSSV | Sub Surface Safety Valve |
| SSTMP | Subsea Templates |
| SSTT | Subsea Test Tree |
| SSU | Subsea Umbilicals |
| SSV | Surface Safety Valve |
| SSWI | Subsea Well Intervention |
| ST | Sidetrack |
| ST | South Timbalier Area Gulf Of Mexico Leasing Area |
| STAB | Stabiliser |
| STAGR | Static Gradient Survey Report |
| STB | Stock Tank Barrel |
| STC | Stc Log |
| STEL | Short Term Exposure Limit |
| STFL | Steel Tube Fly Lead |
| STGL | Stratigraphic Log |
| STIMU | Stimulation Report |
| STKPT | Stuck Point |
| STL | Stl Gamma Ray Log |
| STOIIP | Stock Tank Oil Initially In Place |
| STOOIP | Stock Tank Oil Initially In Place |
| STOP | Safety Training Observation Program |
| STP | Standard Temperature And Pressure |
| STRAT | Stratigraphy, Stratigraphic |
| STRRE | Stratigraphy Report |
| STSH | String Shot |
| SU | Submersible |
| SUBC | Self Unloading Bulk Carrier |
| SUML | Summarised Log |
| SUMRE | Summary Report |
| SUMST | Geological Summary Sheet |
| SUPSALV | US Navy Supervisor Of Salvage |
| SURF | Subsea/Umbilicals/Risers/Flowlines |
| SURFR | Surface Sampling Report |
| SURRE | Survey Report |
| SURVL | Survey Chart Log |
| SUT(A/B) | Subsea Umbilical Termination (Assembly/Box) |
| SUTU | Subsea Umbilical Termination Unit |
| SV | Sleeve Valve Or Standing Valve |
| SW | Salt Water |
| SW | Southwest |
| Sw | Water Saturation |
| SWA | Stop Work Authority |
| SWD | Salt Water Disposal Well |
| SWDW | Salt Water Disposal Well |
| SWE | Senior Well Engineer |
| Sweet | Oil/Gas That Has Low Sulfur Content |
| SWF | Shallow Water Flow |
| SWHE | Spiral Wound Heat Exchanger |
| SWL | Safe Working Load |
| SWOT | Strengths, Weaknesses, Opportunities And Threats |
| SWP | Safe Work Practices |
| SX | Sabine Pass (Louisiana) Gulf Of Mexico Leasing Area |
| SYNRE | Synthetic Seismic Report |
| SYSEI | Synthetic Seismogram Log |
| T | Well Flowing To Tank |
| TA | Temporarily Abandoned Well |
| TABS | Texas Automated Buoy System |
| TAC | Toxic Air Contaminants |
| TAC | Tubing Anchor |
| TAGOGR | Thermally Assisted Gas/Oil Gravity Drainage |
| TAML | Technology Advancement For Multilaterals |
| TAPLI | Tape Listing |
| TAPS | Trans Alaska Pipeline System (Also Called Alyeska Pipeline) |
| TAPVE | Tape Verification |
| TAR | True Amplitude Recovery |
| TB | Tubing Puncher Log |
| TBOSIET | Tropical Basic Offshore Safety Induction & Emergency Training |
| TBT | Through Bore Tree |
| TCA | Total Corrosion Allowance |
| TCF | Temporary Construction Facilities |
| Tcf | Trillion Cubic Feet |
| TCI | Tunsgten Carbide Insert (A Type Of Rollercone Drillbit) |
| TCP | Tubing Conveyed Perforating |
| TCPD | Tubing Conveyed Perforating Depth |
| TCR | Transition Cost Recovery |
| TCU | Thermal Combustion Unit |
| TD | Target Depth |
| TD | Total Depth (Depth Of The End Of The Well) |
| TDD | Total Depth (Driller) |
| TDH | Total Dynamic Head |
| TDL | Total Depth (Logger) |
| TDM | Touch Down Monitoring |
| TDS | Top Drive System |
| TDS | Total Dissolved Solids |
| TDT | Tdt Log |
| TDT GR | Tdt Gamma Ray Casing Collar Locator Log |
| TDTCP | Tdt Cpi Log |
| TDU | Transmission Dependent Utility |
| TEFC | Totally Enclosed Fan Cooled |
| TEG | Tri Ethylene Glycol |
| TELER | Teledrift Report |
| TEMP | Temperature Log |
| TEMPSC | Totally Enclosed Motor Propelled Survival Craft |
| TEU | Twenty Feet Equivalent Unit |
| TF | Tropical Fresh Load Line |
| TFL | Through Flow Line |
| TFM | Taskforcemajella Research Project |
| Tfx | Toxic Effects |
| TGB | Temporary Guide Base |
| TGOR | Total Gas Oil Ratio |
| TH | Tubing Hanger |
| THAI | Toe To Heel Air Injection (Method) |
| THERM | Thermometer Log |
| THERP | Technique For Human Error Rate Prediction |
| THP | Tubing Hanger Pressure |
| THP | Tubing Head Pressure |
| THRT | Tubing Hanger Running Tool |
| TIE | Tie In Log |
| TIEBK | Tieback Report |
| TIH | Trip Into Hole |
| TIMS | Technical Information Management System |
| TIW | Texas Iron Works (Pressure Valve) |
| TJ | Terajoule |
| TLI | Top Of Logging Interval |
| TLL | Timber Load Line |
| TLOG | Technical Log |
| TLP | Tension Leg Platform |
| TLV | Threshold Limit Value |
| TMCM | Tranverse Mercator Central Meridian |
| TMD | Total Measured Depth In A Wellbore |
| TNDT | Thermal Neutron Decay Time |
| TNDTG | Thermal Neutron Decay Time/Gamma Ray Log |
| TOC | Top Of Cement |
| TOC | Total Organic Content/Carbon |
| TOFD | Time Of First Data Sample (On Seismic Trace) |
| TOFS | Time Of First Surface Sample (On Seismic Trace) |
| TOH | Trip Out Of Hole |
| TOL | Top Of Liner |
| TOOH | Trip Out Of Hole |
| TORAN | Torque And Drag Analysis |
| TOU | Time Of Use |
| TP | Tarpon Springs Gulf Of Mexico Leasing Area |
| TPERF | Tool Performance |
| TPI | Third Party Inspector |
| TPI | Tones Per Inch Immersion |
| TPIC | Terminal Person In Charge |
| TQ | Training Qualifications |
| TQM | Total Quality Management |
| TR | Temporary Refuge |
| TRA | Tracer Log |
| TRACL | Tractor Log |
| TRCFR | Total Recordable Case Frequency Rate |
| TRD | Total Report Data |
| TREAT | Treatment Report |
| TREP | Test Report |
| TRIP | Trip Condition Log |
| TRIR | Total Recordable Incident Rate |
| TRSCSSSV | Tubing Retrievable Surface Controlled Sub Surface Safety Valve |
| TRSCSSV | Tubing Retrievable Surface Controlled Sub Surface Valve |
| TRSV | Tubing Retrievable Safety Valve |
| TRT | Tree Running Tool |
| TS | Tiger Shoal Gulf Of Mexico Leasing Area |
| TSA | Thermally Sprayed Aluminium |
| TSCA | US Toxic Substances Control Act |
| TSE | Temperature Safety Element |
| TSH | Temperature Safety High (Sensor) |
| TSI | Temporarily Shut In |
| TSI | Transportation Security Incidents |
| TSS’s | Traffic Separation Schemes |
| TT | Torque Tool |
| TT | Transit Time Log |
| TT | Travel Time |
| TTC | Total Transfer Capability |
| TTP | Through Tubing Perforating |
| TTRD | Through Tubing Rotary Drilling |
| TUM | Tracked Umbilical Machine |
| TV/BIP | Ratio Of Total Volume (Ore And Overburden) To Bitumen In Place |
| TVBDF | True Vertical Depth Below Derrick Floor |
| TVD | True Vertical Depth |
| TVDPB | True Vertical Depth Playback Log |
| TVDSS | True Vertical Depth Subsea |
| TVELD | Time And Velocity To Depth |
| TVRF | True Vertical Depth Versus Repeat Formation Tester |
| TWA | Time Weighted Average |
| TWT | Two Way Time (Seismic) |
| TWTT | Two Way Travel Time |
| TWTTL | Two Way Travel Time Log |
| TZ | Transition Zone |
| UB | Underbalanced |
| UBD | Underbalanced Drilling |
| UBI | Ultrasonic Borehole Imager |
| UBIRE | Ultrasonic Borehole Imager Report |
| UBS | Universal Bulk Ship |
| UCS | Unconfined Compressive Strength |
| UCSU | Upstream Commissioning And Start Up |
| UEL | Upper Explosive Limit |
| UFC | Uniform Fire Code |
| UFJ | Upper Flex Joint |
| UFL | Upper Flammable Limit |
| UGF | Universal Guide Frame |
| UIC | Underground Injection Control |
| UKCS | Uk Continental Shelf |
| UKCS | United Kingdom Continental Shelf |
| UKOCS | Uk Outer Continental Shelf |
| UKOOA | United Kingdom Offshore Operators Association |
| UKOOG | United Kingdom Onshore Operators Group |
| UKPIA | United Kingdom Petroleum Industry Association Limited |
| ULBC | Ultra Large Bulk Carrier |
| ULCC | Ultra Large Crude Carrier |
| ULCGR | Uncompressed Ldc Cnl Gamma Ray Log |
| UMCA | Umbilical Midline Connection Assembly |
| UMS | Universal Measurement System |
| UMV | Upper Master Valve (From A Xmas Tree) |
| UN | United Nations |
| UNCLOS | United Nations Convention On The Law Of The Sea |
| UOT | Unscheduled Overtime |
| UPR | Upper Pipe Ram |
| URR | Ultimately Recoverable Resources |
| URT | Universal Running Tool |
| USC | United States Code |
| USCG | United States Coast Guard |
| USDA | US Department Of Agriculture |
| USDOI | US Department Of Interior |
| USDOT | US Department Of Transportation |
| USEPA | US Environmental Protection Agency |
| USFWS | US Fish And Wildlife Service |
| USGS | United States Geological Survey |
| USV | Underwater Safety Valve |
| UT | Ultrasonic Testing |
| UTA | Umbilical Termination Assembly |
| UTC | Universal Time (Coordinated) |
| UTM | Universal Transverse Mercator |
| UV | Ultra Violet |
| UWI | Unique Well Identifier |
| UWT | Ultrasonic Welding Line |
| VCG | Vertical Centre Of Gravity |
| VDENL | Variation Density Log |
| VDL | Vdl Log (Variable Density Log) |
| VDR | Voyage Data Recorder |
| VDU | Vacuum Distillation Unit, Used In Processing Bitumen |
| VDU | Visual Display Unit |
| VELL | Velocity Log |
| VERAN | Verticality Analysis |
| VERIF | Verification List |
| VERLI | Verification Listing |
| VERTK | Vertical Thickness |
| VIR | Value Investment Ratio |
| VISME | Viscosity Measurement |
| VIV | Vortex Induced Vibration |
| VK | Viosca Knoll Gulf Of Mexico Leasing Area |
| VLBC | Very Large Bulk Carrier |
| VLCC | Very Large Crude Carrier |
| VLP | Vertical Lift Performance |
| VLTCS | Very Low Temperature Carbon Steel |
| VN | Vernon Gulf Of Mexico Leasing Area |
| VO | Variation Order |
| VOC | Volatile Organic Compounds |
| WGEO | Well Geophone Report |
| WGFM | Wet Gas Flow Meter |
| WGUNT | Water Gun Test |
| WH | Well History |
| Wh | White |
| WHFP | Wellhead Flowing Pressure |
| WHIG | Whitehouse Gauge |
| WHM | Wellhead Maintenance |
| WHMIS | Workplace Hazardous Material Information Systems |
| WHO | World Health Organisation |
| WHP | Wellhead Pressure |
| WHRU | Waste Heat Recovery Unit |
| WI | Water Injection |
| WI | Working Interest |
| WIPSP | Wip Stock Packer |
| WIS | Wave Information Study |
| WIT | Water Investigation Tool |
| WITS | Well Site Information Transfer System |
| WL | Water Line |
| WL | Wireline |
| WLC | Wireline Composite Log |
| WLL | Wireline Logging |
| WLSUM | Well Summary |
| WLTS | Well Log Transaction System |
| WMO | World Meteorological Organization |
| WMPI | Wet Magnetic Particle Inspection |
| WMU | World Maritime University |
| WO | Well In Work Over |
| WO/O | Waiting On Orders |
| WOA | Well Operations Authorization |
| WOB | Weight On Bit |
| WOC | Wait On Cement |
| WOC | Water Oil Contact (Or Oil Water Contact) |
| WOE | Well Operations Engineer (A Key Person Of Well Services) |
| WOM | Wait(Ing) On Material |
| WOR | Water Oil Ratio |
| WORKO | Workover |
| WOS | West Of Shetland, Oil Province On The Ukcs |
| WOW | Wait(Ing) On Weather |
| WP | Well Proposal Or Working Pressure |
| WP | Well Protector |
| WPC | Water Pollution Control |
| WPI | Wholesale Price Index |
| WPLAN | Well Course Plan |
| WPQ/S | Weld Procedure Qualification/Specification |
| WPR | Well Prognosis Report |
| WQ | A Textural Parameter Used For Cbvwe Computations (Halliburton) |
| WQC | Water Quality Certificate |
| WQCA | Water Quality Control Act |
| WQCB | Water Quality Control Board |
| WR | Walker Ridge Gulf Of Mexico Leasing Area |
| WR | Wet Resistivity |
| WR | Wireline Retrievable (As In A Wr Plug) |
| WRS | Well Report Sepia |
| WRSCSSV | Wireline Retrievable Surface Controlled Sub Surface Valve |
| WSCA | Well Services Contractors Association |
| WSCL | Well Site Core Log |
| WSE | Well Seismic Edit |
| WSERE | Well Seismic Edit Report |
| WSHT | Well Shoot |
| WSL | Well Site Log |
| WSO | Water Shut Off |
| WSOG | Well Specific Operation Guidelines |
| yd | Yard |
| YM | Young’S Modulus |
| YP | Yield Point |
| yr | Year |
| YTD | Year To Date |
| ZD | Zone Description |
| ZDENP | Density Log |
| ZDL | Compensated Z Densilog |
| ZOI | Zone Of Influence |
Showing posts with tag: acronyms
| abbrev | define |
|---|---|
| AB | air brick |
| ABR | alternate bars reversed (reinforcement) |
| AC | alternating current or air conditioning |
| ACoP | approved code of practice |
| AIStructE | Associate of the Institution of Structural Engineers |
| ALT | alternate, alternately (reinforcement) |
| AMICE | Associate Member of the Institution of Civil Engineers |
| AMIStructE | Associate Member of the Institution of Structural Engineers |
| BBA | British Board of Agrément |
| BCA | British Cement Association |
| BCO | building control officer |
| BCSA | British Constructional Steelwork Association |
| BCWS | boosted cold water service (services) |
| BH | bore hole or beam height (survey) |
| BHWS | boosted hot water service (services) |
| BIG | back inlet gully |
| BLK | blockwork |
| BM | bending moment or bench mark |
| BOQ | bill of quantities |
| BRW | brick retaining wall (survey) |
| BS | British Standard |
| BSI | British Standards Institution |
| BW | brick wall (survey) or builders’ work (services) |
| BWF | barbed wire fence (survey) |
| BWIC | builders’ work in connection with (services) |
| BWK | brickwork |
| C | cill height (survey) |
| CA | contract administrator |
| CAD | computer aided design |
| CAM | computer aided manufacture |
| CBF | close boarded fence (survey) |
| CBW | concrete block wall (survey) |
| CC | centre to centre |
| CDM | Construction (Design and Management) Regulations |
| CE | conformité européene |
| CEng | chartered engineer |
| CGI | corrugated galvanized iron |
| CH | ceiling height |
| CHS | circular hollow section |
| CI | cast iron |
| CIF | corrugated iron fence (survey) |
| CJ | construction joint |
| CL | cover level or centre line |
| CLF | chain link fence (survey) |
| CP | code of practice |
| CPF | concrete panel fence (survey) |
| CPS | concrete paving slabs (survey) |
| CR | crown height of arch (survey) |
| CRS | centres |
| CRW | concrete retaining wall (survey) |
| CS | Concrete Society |
| CV | commissioning valve (services) |
| CW | concrete wall (survey) |
| CWS | cold water service (services) |
| CWT | hundredweight |
| D | diameter |
| DC | drain cock (services) |
| DCV | double check valve (services) |
| DHW | domestic hot water |
| DL | dead load |
| DOV | drain off valve (services) |
| DP | down pipe |
| DPC | damp-proof course |
| DPDT | double pole double throw switch (electrical) |
| DPM | damp-proof membrane |
| DPST | double pole single throw switch (electrical) |
| DRG | drawing |
| DS | District Surveyor |
| DSSO | double switched socket outlet (electrical) |
| E: | |
| ECB | electricity control box |
| ECUK | Engineering Council United Kingdom |
| EL | existing level |
| EngTech | engineering technician |
| EPP | expanded polypropylene or environmentally preferred product |
| ERV | expansion relief valve (services) |
| FB | flower bed (survey) or from below (services) |
| FBTA | from below to above (services) |
| FC | flexible connection (services) |
| FF | far face (reinforcement) |
| FFL | finished floor level |
| FH | fire hydrant (survey) |
| FICE | Fellow of the Institution of Civil Engineers |
| FIStructE | Fellow of the Institution of Structural Engineers |
| FL | floor level |
| FoS | factor of safety |
| FS | full size or fused spur (electrical) |
| FSC | forest stewardship council (timber) |
| G | gully (survey) |
| G: | |
| GGBS | ground granulated blastfurnace slag |
| GS | general structural (timber) |
| H or HT | window head height (survey) |
| HAC | high alumina cement |
| HDF | high density fibreboard |
| HL | high level |
| HSFG | high strength friction grip (steel connection) |
| HT | high tensile |
| HWS | hot water service (services) |
| IC | inspection cover (survey) or inspection chamber |
| ICE | Institution of Civil Engineers |
| ID | inside diameter |
| IEng | incorporated engineer |
| IL | invert level |
| INTER | intermediate switch (electrical) |
| IRF | iron railing fence (survey) |
| IStructE | Institution of Structural Engineers |
| IV | isolating valve (services) |
| IWF | interwoven fence (survey) |
| JCB | J C Bamford – manufacturer of wheeled excavators |
| JCT | Joint Contracts Tribunal |
| kg | kilogramme |
| kN | kiloNewton |
| L | light (survey) |
| LA | local authority |
| LL | live load |
| LOLER | Lifting Operations and Lifting Equipment Regulations 1998 |
| LP | lamp post (survey) |
| LSL | laminated strand lumber |
| LSV | lockshield valve (services) |
| m | metre |
| MC | mass concrete or moderately conservative |
| MCW | mains cold water (services) |
| MDF | medium density fibreboard |
| MH | manhole |
| MHSW | Management of health and Safety at Work Regulations |
| MICE | Member of the Institution of Civil Engineers |
| MIStructE | Member of the Institution of Structural Engineers |
| mm | millimetre |
| MMMF | man made mineral fibres |
| MS | mild steel |
| N | Newton |
| NASC | National Access and Scaffolding Confederation |
| NF | near face (reinforcement) |
| NRV | non return valve (services) |
| NTS | not to scale |
| Ø | diameter |
| O: | |
| OD | outside diameter or Ordnance datum |
| OH | over head |
| OPC | ordinary Portland cement |
| P | post |
| PALF | palisade fence (survey) |
| PC | precast concrete |
| PCC | Portland cement concrete |
| PF | picket fence (survey) |
| PFA | pulverised fuel ash |
| PFC | parallel flange channel |
| PKT | pocket (RC) |
| PL or PLT | plate (steel connection) |
| PPE | personal protective equipment, Personal Protective Equipment at Work Regulations |
| PRF | post and rail fence (survey) |
| PWD | Permanent Works Designer |
| PWF | post and wire fence (survey) |
| QS | quantity surveyor |
| R | render (survey) |
| RAD | radiator |
| RC | reinforced concrete |
| RE | rodding eye (survey) |
| RHPC | rapid hardening Portland cement |
| RHS | rectangular hollow section |
| RIBA | Royal Institute of British Architects |
| RICS | Royal Institution of Chartered Surveyors |
| RMC | ready-mixed concrete |
| RSA | rolled steel angle |
| RSJ | rolled steel joist |
| RWP | rain water pipe |
| S: | |
| SC | stop cock |
| SE | structural engineer |
| SHS | square hollow section |
| SI | Systeme Internationale |
| SL | soffite level or sky light or sill level |
| SOL | setting-out line |
| SOP | setting-out point |
| SP | soil pipe (services); arch springer height (survey) |
| SPDT | single pole double throw switch (electrical) |
| SPS | stone paving slabs (survey) |
| SPST | single pole single throw switch (electrical) |
| SRC | sulphate resisting cement |
| SS | stainless steel or simply supported or special structural (timber) |
| SSL | structural slab level |
| SSSO | single switched socket outlet (electrical) |
| STG | staggered (RC) |
| STR | strainer (services) |
| SV | safety valve (services) |
| SVP | soil and vent pipe |
| SW | stone wall (survey) |
| T&G | tongued and grooved |
| TA | to above (services) |
| TBM | temporary bench mark |
| TIStructE | Technician of the Institution of Structural Engineers |
| TMICE | Technician Member of the Institution of Civil Engineers |
| TOB | top of beam |
| TOC | top of concrete |
| TOS | top of steel |
| TOW | top of wall |
| TP | town planning or trial pit |
| TPO | tree preservation order |
| TPRV | temperature/pressure relief valve (services) |
| TWC | temporary works coordinator |
| TWS | temporary works supervisor |
| U/S | underside |
| UB | universal beam |
| UC | universal column |
| UF | urea formaldehyde |
| UNO | unless noted otherwise |
| UTL | unable to lift (survey) |
| V | vent (survey) |
| VP | vent pipe (survey) |
| W | window (survey) |
| WAHR | Work at Height Regulations |
| WL | water level (survey) |
| WMF | wire mesh fence (survey) |
| WPF | wooden panel fence (survey) |
| abbrev | define |
|---|---|
| Access chamber: | Underground chamber enabling access to drains or other underground services. |
| Acre: | Unit of land area in the Imperial system; 4840 square yards, or the equivalent of a rectangular field one chain wide and one furlong long, approximately 4047 square metres or 0.4047 hectares. |
| Acrow: | A telescopic prop much used as a temporary support in construction. Named after the American manufacturer who first introduced them to the UK. |
| Additive: | Chemicals added to cement based products (concrete, mortar, render, screed etc) to impart various desirable properties such as to increase or reduce curing time, increase strength, enhance workability and so on. The amount of additives should be watched carefully since in excess or combination they can have undesirable effects. |
| Aggregate: | The stones and sand (coarse and fine aggregate respectively) used as a filler in concrete, asphalt etc. |
| Air conditioning: | Originally, a system by which fresh air is drawn from outside the building and brought to an acceptable condition in terms of temperature and humidity before being introduced into the building. The name is often also applied to chillers with no air handling, drying or heating capacity. |
| Aircrete: | A lightweight aerated cement-based material from which easily handled high insulating building-blocks are made. (Trade name.) |
| All-in ballast: | Ballast suitable for making into concrete without the addition of any other aggregate. |
| Angle: | Steel angle: a steel section whose cross-section is L-shaped. If the vertical and horizontal legs of the ‘L’ are the same length it is called an equal angle, if different, an unequal or odd leg angle. Angles are also available in other metals. |
| An amount of rotation. The measurement of angles using 360 degrees in a whole circle, with each degree divided into 60 minutes of 60 seconds each, is of very great antiquity, going back to the Babylonians who used a number system based on 60s rather than tens. | |
| Arch: | A basic form of masonry construction dating back millenia. Brick arches are found spanning over window and door openings in Victorian and older buildings; their disadvantage is that they exert horizontal thrust at their bearings, which sometimes leads to distortion in poorly designed or maintained arches. |
| Architrave: | Timber moulding around a door frame or similar. |
| Arris: | A sharp corner at the junction of two planes or surfaces. |
| Arris rail: | Timber of triangular cross section (made by cutting a square section diagonally), used for fence rails and forming fillets at the junctions of flat roofs and walls. |
| Ashlar: | Smooth sawn stonework used in a wall. |
| Axed arch: | A brick arch in which the bricks are cut (traditionally with an axe) to a wedge shape. The mortar joints are of even thickness. As opposed to a rough arch. |
| Back addition: | Traditional terraced housing originally comprised rooms between the front and rear external walls. When ‘indoor plumbing’ became the rage, extensions were built at the back of the house to contain the bathroom, wc, kitchen and scullery. The rear wing of a house is still called the back addition, even if it was built at the same time as the rest of the house. |
| Ballast: | Mixed size aggregate. |
| Batten: | A small timber such as those used to support roof tiles. |
| Beam: | A horizontal member that carries vertical loads along its length. It would traditionally have been timber (the word originally meaning “tree trunk”) but a modern beam might more often be reinforced concrete or steel. (Fr. poutre, f) |
| A steel component designed for use as a beam; “Universal Beam”. | |
| Bench-mark: | A levelling base point of known level. The Ordnance Survey has set up bench marks around the UK. Contractors often establish ‘temporary bench marks’ (‘TBM’) at convenient points around the site. |
| Bending moment: | The bending force in, for example, a beam. The units of bending moment are those of force x distance, for example, kiloNewton-metres. |
| Berm: | An earth bank left against a retaining wall during excavation, until it is propped. |
| Bessemer converter: | A kind of steel-making plant, no longer in use. |
| Bill of quantities (BOQ): | A list of all the quantities of each component and operation required in a construction project. The BOQ enables all the tenderers to price exactly the same work, and makes it simple to work out the value of the work done at any time during the job. For small jobs the benefit of a BOQ may be outweighed by the cost of producing it. |
| Blinding: | A layer of concrete covering the ground so that steel reinforcement can be laid out without becoming contaminated. |
| Block: | Building unit of a regular size usually made of solid or aerated (“aircrete”) concrete. |
| Blockwork: | Built with blocks. |
| Bolt: | Threaded fastener used (with a nut and washers) for connecting building components, particularly steel and/or timber. |
| Bond: | The arrangement or pattern of bricks (or other masonry units) in a wall. Each unit should overlap the unit below by at least one quarter of a unit’s length, and sufficient bonding bricks should be provided to prevent the wall splitting apart. Common bond patterns are Flemish, Stretcher, English and English Garden Wall. |
| Bonding plaster: | A proprietary type of plaster with good adhesive properties. It must be used with care as it is hygroscopic, i.e. it will readily absorb atmospheric or rising moisture. |
| Box gutter: | A timber gutter lined with lead or some other waterproof material. (Fr. chèneau (m) encaissé). |
| Brace, Bracing: | Diagonal members (or rigid membranes) providing rigidity to a structure. |
| Bressemer, Bresumer etc.: | A timber lintel flush with the surface of the brickwork above it. |
| Brick: | Building unit of a regular size usually made of baked clay. Can also be calcium silicate or concrete. The standard size of metric bricks in the UK is 65 x 102.5 x 215mm, designed to be used with a 10mm mortar joint. The equivalent theoretical size of imperial bricks, used with a 3/8 inch joint, is 2 5/8 x 4 3/16 x 8 5/8 inches. Clay bricks are of course of great antiquity as evidenced by archaeology and the bible. (Fr. brique, f). |
| Brick guard: | Steel mesh panel used on scaffolding to make sure that loose bricks cannot fall off the scaffold. |
| Brick tie: | A metal or plastic component to tie together the two leaves of a cavity wall. Older galvanized ties tend to rust away and have to be replaced. |
| Bricklayer: | A skilled trade which requires years of training and practice. (Fr. maçon, m). |
| Brickwork: | Made of bricks. (Fr. maçonnerie, f). |
| Bucket-handle pointing: | Recessed in the half-round shape of an old-fashioned metal bucket handle. |
| Building Control: | The first Building Control was introduced, in London, after the Great Fire (1666) when District Surveyors were engaged to enforce the Building Regulations which prevented the spread of fire from house to house – the Regulations had existed before but had often been ignored. The system now covers the whole UK and includes rules on most aspects of building as it affects public safety and health, enforced by Building Control Officers. See links for details. Not to be confused with Town Planning. |
| Building services: | Plumbing, electrical wiring, ventilation, gas supply and other support systems in a building. |
| Calcium silicate bricks: | Smooth bricks made by compressing and heating a mixture of sand, or ground flint, and lime. Popular in the mid 20th century but less used now, because of their tendency to shrink. |
| Camber: | The rise in the middle of a roadway for drainage, or the similar shape given to a beam so that it will become level when loaded. |
| Cantilever: | Overhanging beam, roof or floor. |
| Casement: | A window which is hinged rather than sliding. |
| Cast iron: | A brittle material no longer much used in structural engineering. |
| Cavity tie: | See brick tie. |
| Cavity wall: | A wall consisting of two leaves or skins of masonry, seperated by a cavity to enhance water resistance and thermal insulation. A form of wall construction known but rarely used in Victorian times but which came into common use in the 1930s. (Fr. mur (m) à double paroi). |
| Cement: | A powder which when mixed with water forms a paste that hardens with time. Portland Cement was first patented by Joseph Aspin in 1824 and is known as hydraulic cement, because it will set under water. Cement is mixed with sand to make mortar or render, and with larger stones added it is known as concrete. The sand and stones are there to reduce the shrinkage to which Portland cement is subject and to reduce the amount of cement needed. There are various grades: the usual one is called Ordinary Portland Cement (OPC); others commonly used are rapid hardening and sulphate resisting. |
| Cement mixer: | Mechanical device consisting of a rotating drum with fixed paddles inside, used for mixing cement with aggregate and water to produce concrete, mortar, or any other cement-based mixture. |
| Centring: | Temporary supports used when building an arch. |
| Chain: | Surveyors’ unit of length in the Imperial system. Gunter’s chain, named after its inventor, comprises 22 yards or 66 feet, approximately 20.117 metres. Gunter’s chain is useful for deriving areas in acres. The lesser-known Engineer’s chain, 100 feet long, was used for measuring linear distances, along roads for example. |
| Channel: | A structural steel component which is C-shaped in cross section. |
| Characteristic strength: | The strength at which a member tested would fail, normally with 95% confidence. |
| Cill: | Alternative spelling of sill. |
| Circular hollow section: | A structural steel component in the shape of a round tube. |
| Cladding: | The seperately-applied exterior finish of a framed building. |
| Clamp: | See cramp. |
| Classical orders of architecture: | The classical orders are styles of building originating from the construction of temples in ancient Greece and Rome. Orders are defined by their varying styles of column, although the orders also include information on the proportions of the building. The Greeks originally had three orders: the Doric, Ionic and Corinthian. Doric is the simplest, Ionic more elaborate, and Corinthian more decorative still. The Romans added the Tuscan and Composite orders which are respectively plainer and more highly decorated than the Greek orders. |
| Cleat: | A steel plate or angle with holes for bolting, for connecting the components of a steel frame together. |
| Coarse aggregate: | Any aggregate larger than fine aggregate. Gravel. Available with a maximum size of 10, 20 or 40mm. |
| Collar: | A horizontal timber joining two opposing rafters together. |
| Collateral warrantee: | A legal agreement between a developer and a building contractor or designer, allowing the contractor or designer to be made responsible to a third party, such as a finance provider or a purchaser, for the execution of their duties. |
| Common rafter: | A normal rafter, which extends all the way from wall plate to ridge, as opposed to a jack rafter. |
| Compasses: | An instrument for drawing arcs and circles. Not to be confused, incidentally, with a compass (in the singular) which is a magnetic instrument for finding North. |
| Competent person: | Person with sufficient knowledge of the specific tasks to be undertaken and the risks which the work will entail, and with sufficient experience and ability to enable them to carry out their duties in relation to the project, to recognize their limitations, and to take appropriate action in order to prevent harm to those carrying out construction work, or those affected by the work. (Construction Design and Managment Regulations 2007) |
| Composite order: | One of the ancient classical orders of architecture, introduced by the Romans. Its capital combines the volute scrolls of the Ionic with the acanthus foliage of the Corinthian. |
| Compression: | The pressing force experienced in a column or in the top flange of a beam. |
| Computer aided design (CAD): | The type of computer program with which technical drawings are prepared. The market leader is AutoCAD but there are others. |
| Concrete: | An artifical stone-like substance obtained by mixing large and small stones and sand with cement and enough water to permit full hydration and make the mix workable. Concrete (like the stone minerals from which it is made) is strong in compression but weak in tension. Roman concrete was based, not on Portland cement, but on a ‘pozzolanic’ mix, made from volcanic ash and incorporating ground-up bricks and tiles. (Fr. beton, m). |
| Concrete pump: | A machine for transporting concrete down a delivery pipe. May be truck mounted or static. |
| Contract: | Building contracts may legally be formed verbally. Usually however a written contract should be used. There are various standard forms of contract, such as those provided by the Joint Contracts Tribunal and the various engineering institutions. |
| Contract administrator: | Many forms of building contract specify a Contract Administrator to manage the contract on behalf of the Client. It may be the architect, the engineer, or a specialist such as a project manager. The CA’s main duty is to specify how much the contractor is due to be paid at each stage. |
| Contract documents: | The contract drawings, bill of quantities, specifications, and any other documents referred to in the contract. |
| Contract drawings: | The drawings on which the contract is based. |
| Coping: | Protective capping on the top of a parapet or free standing wall. |
| Corbel: | Projecting brick or masonry courses; from Norman-French meaning ‘crow’ after carved stone projections used in medieval times to support roof trusses. |
| Corinthian order: | The most elaborate and decorated of the three ancient Greek orders of architecture, its capital is carved in imitation of the growth of acanthus leaves. According to Roman writer Vitruvius, a young lady of the nobility in Corinth died, and her nurse placed a basket containing her belongings on top of the grave, with a roof tile on top to protect it. An acanthus plant grew right under the basket and its shoots curved and rolled around the corners of the tile. A passing architect noticed this and copied it in stone. |
| Corrugated iron: | (Corrugated galvanized iron). Iron (or for the last hundred years at least, steel) sheet formed into a ridged shape, used for roofing and cladding. |
| Coupler, coupling: | A device for mechanically joining two linear components like pipes, scaffold tubes, or a drill bit with an extension. |
| Course: | A layer of bricks or blocks in a wall. |
| Cramp (also clamp): | Metal component built into masonry to join it to another member, for example a window frame (‘frame cramp’), or to join two masonry units together. |
| Crane: | Lifting device which can be fixed or mobile. |
| Crippled: | Of joists, doubled-up to form a trimmer. (American term.) |
| Cure: | The hardening of concrete and other cement products. Curing requires a certain range of temperature (more than 6C but not enough to cause thermal stress) and sufficient internal water to combine with the cement. |
| Dado: | A timber moulding fixed to the wall at waist level. |
| Damp proof course (DPC): | An impermeable material built into a wall near the ground to prevent rising damp. Types available include lead-based, bitumen-based, or plastic-based. Two courses of impermeable engineering bricks can also be used. The DPC must be at least 150mm above the external ground level. |
| Damp proof membrane (DPM): | Usually heavy duty polythene, incorporated within floors built on the ground to prevent rising damp. |
| Dead load: | The weight of the materials which form a permanent part of the structure, as opposed to imposed load. |
| Deal: | Softwood; a standard piece of softwood used for making joinery. |
| Design and build contract: | A building contract in which the builder is also responsible for all or some of the design. |
| Design check: | Evaluation of the design to determine whether it conforms with the design brief and can be expected to provide a safe engineered solution. |
| Development: | The improvement of land in order to make use of it, e.g. by building structures on it or by adapting existing structures. Development can either be for the developer’s own use, or else speculative, i.e. for profit. |
| Digger: | Excavators with hydraulic transmission are ubiquitous in groundwork. The first to be produced were made the J C Bamford company. |
| District Surveyor: | Borough officers first appointed after the Great Fire of London to supervise the Building Regulations. Now combined with the Building Control Officer. |
| Doric Order: | The simplest of the ancient Greek orders of architecture. The columns consist of a plain fluted shaft and a simple capital; there may be no base or a simple round one. According to Roman writer Vitruvius the order originated with a temple to Juno built by one Dorus. |
| Dormer: | A window projecting from the slope of a roof. |
| Dowel: | (Concrete) A steel bar for transferring load across a joint. (Joinery) A timber moulding with a circular cross section. |
| Dragon beam: | In traditional pitched roof construction, a diagonal tying timber across the corner of a hip. |
| Drypack: | A strong mixture of cement and sand damped with a small amount of water, used to fill holes in existing walls for example in underpinning. |
| Ductwork: | Air-handling pipes fabricated from sheet steel. |
| Dumpy level: | Originally a simple but accurate optical instrument invented in 1832 by English civil engineer William Gravatt. Now applied to any optical levelling instrument used by builders. |
| Effective length: | A concept used in the design of structural members. May be more or less than the actual length to compensate for the degree of restraint of the ends of the member, a member which is more rigidly held at the ends being stronger. |
| Engineer: | In English, the term is associated with engines, although this is a historical accident, the first engineers having been military engineers who were responsible for ‘engines of war’ such as tunnels and seige towers. Engineers engaged on public works such as canals, highways and railways called themselves ‘civil engineers’ to distinguish themselves from military engineers. There are now many kinds of engineer. The word itself is unprotected in the UK, so that anybody can call themselves an engineer, such as in the joke job descriptions ‘rodent control engineer’ and ‘domestic engineer’. In France the equivalent word ‘ingenieur’ seems closer to words signifying ingenuity, and is a controlled designation requiring its holder to have appropriate qualifications. |
| Engineering brick: | A type of brick which is particularly strong and impermeable. The traditional product was blue in colour; other colours and qualities are available. |
| English Bond: | Alternate rows of bricks consist of all headers and all stretchers. Traditionally considered to be the strongest bond, it is often found in engineering works like bridges and retaining-walls. |
| English Garden Wall Bond: | Most brickwork bonds are designed so that one side of the wall can be built ‘fair-faced’ (suitable for viewing as finished work); the other side, inside the building, will be plastered so the brickwork can be left rough. Garden walls however will be seen from both sides, so Garden Wall bond is designed with a minimum number of headers so that both sides can be built fair-faced. |
| External works: | The landscaping, roads and paths created in the parts of the site not occupied by the building. |
| Extrados: | The upper surface of an arch. |
| Falsework: | Temporary structure used to support a permanent structure while it is not self-supporting. |
| Fascia: | In roof construction, a decorative board fixed to the ends of the rafters. Also the name board over a shop-front. |
| Feather-edge board: | A board which is thicker one side than the other. Used for fencing, where they are fixed vertically and overlapping. Sometimes found in tiled roofs, fixed horizontally, with the thicker edge at the top to provide a hanging point for tiles. |
| Filler Joist Floor: | An obsolete but commonly-found form of floor comprising a concrete slab reinforced with steel I-beams known as rolled steel joists. |
| Fine aggregate: | Sand used in making concrete, mortar etc. |
| Firring: | A piece of timber cut as a wedge and fixed to the top of a joist. Used to give flat roofs a fall for drainage, or to level up uneven floors. |
| First fix: | Electrical and plumbing first fix are the fixing of the wires and pipes in the fabric of the building, before plastering. Carpentry first fix is the provision of joists, studs and rafters. |
| Flange: | The top and bottom plates of an I- or H-beam, or of a channel. The top and bottom flanges of a beam are usually in compression and tension respectively. |
| Flashing: | Lead (or other durable metal sheets) to protect junctions of roofs and walls from water ingress. (Fr. bande (f) de recouvrement). |
| Flat roof: | A roof with a slope or pitch less than ten degrees from the horizontal. |
| Flemish Bond: | The most common bond in brickwork 225mm or more in thickness, it consists of alternating headers and stretchers, with each header being in the middle of the stretchers above and below. |
| Fletton: | The common type of machine-made yellow/orange frogged brick used in the south-east of England and London. Named after Fletton, near Peterborough. |
| Flint-lime brick: | A kind of calcium silicate brick. |
| Flitched beam, Flitch: | A timber beam strengthened with one or more steel plates bolted or screwed to it, often sandwiched between timbers. |
| Flue: | Channel formed with masonry or specially made blocks or pipes through which the products of combustion pass to the outside. Until the middle 20th century, the need to stack flues from storey to storey imposed a discipline on architecture which is now absent. |
| Fluid Mechanics: | The science of the properties and motion of liquids and gases. |
| Flush pointing: | Flush with the surface of the bricks. |
| Foot: | Unit of length in the Imperial system; one-third of a yard, equal to 304.8mm. |
| Force: | That which can accelerate a mass. An example of a force is weight, which acts to accelerate any mass towards the centre of the earth. Structural engineering is about providing structures which are strong enough to resist the weight and other forces acting on them. In the SI system, force is measured in Newtons. |
| Foreman: | Trades foremen, for example foreman plasterer, electrician, are in charge of their tradesmen on a site. The general foreman is in charge of the trades foremen. The term does not specify gender. |
| Formwork: | A mould into which concrete is cast. |
| Foundation: | The part of a building or structure which transmits loads to the soil. Foundations may be stepped masonry, mass or reinforced concrete, or piled. (Fr. fondation, f). |
| Frame clamp or cramp: | Metal component screwed to the window or door frame and built into the masonry wall. |
| Frenchman: | A tool for forming the shape of pointing. |
| Frog: | The recess in a machine-made brick. |
| Furlong: | Unit of length in the Imperial system; ten chains, or 660 feet, one-eighth of a mile, equal to 201.168 metres. |
| Gable: | The triangular wall at the end of a building with pitched roofs. (Fr. pignon, m). |
| Ganger: | The leader of a work gang, for example, a concrete gang. |
| Gauge: | A measuring rule. Also, the height of brickwork, specified as the number of courses per foot or per 300mm. In the south of the UK brickwork gauge is almost universally four courses per foot or per 300mm. |
| Ginny wheel: | Pulley used for hoisting things up a scaffold. |
| Glass bead: | Moulding used to retain glass in a window frame. |
| Gram: | Unit of mass in the SI system of weights. Symbol g. |
| Grating: | Iron or plastic protection over a gully. |
| Gravel: | Naturally occuring ballast or course aggregate. |
| Green Roof: | A flat roof covered (deliberately) with growing material. |
| Groundwork: | Foundations, drainage, levelling and other building operations involving digging. |
| Grout: | Cement mixed with enough water to make it runny, used to fill a gap under the base of a steel column. Also the filler between wall tiles. |
| Guarding: | Protection against people or things falling off the edge of stairs, landings, balconies or scaffolds. |
| Gully: | A container with water in it, to seal the inlet to a drain and prevent the release of noxious gases. |
| Gutter: | Open channel for receiving and carrying away rain water. (Fr. gouttière, f). |
| H-section: | A steel component shaped in cross-section like an H, such as a Universal Column (qv). |
| Half timbered: | A descriptive term for a traditional timber-framed house. |
| Hammerbeam roof: | A form of historical roof truss, usually comprising a central truss section spanning between two cantilevers. |
| Handrail: | A length of timber or metal at hand height at the side of a staircase or landing. |
| Hardwood: | Timber from a deciduous tree; note that hardwood can be softer than softwood, for example balsa wood is a hardwood although very weak and soft. In construction, hardwood may be used in preference to more readily-available softwood because of its higher strength, its greater durability, or its superior appearance. Efforts should always be made to ensure that the timber is from renewable sources. (Fr. bois (m) feuillu). |
| Header: | A brick whose ‘head’ or short end is visible on the surface of the wall. See stretcher. |
| Hearth: | Fire resisting area of floor adjacent to an open fireplace. |
| High alumina cement (HAC): | Concrete made with this type of cement hardens faster than with Portland cement. This advantage once led to HAC being used for manufacturing precast concrete elements, but it has the disadvantage that it tends to become weaker over time especially in a moist atmosphere. The collapse of some swimming pool roofs in the 1970s led to HAC being banned for structural use. It is still used for non-structural purposes, for example, for bedding sanitary ware on a concrete floor. |
| High strength friction grip bolt: | Used for connecting steel components in situations where it is not desirable for the connection to slip. |
| High tensile steel: | A grade of steel stronger than mild steel, which may be used both in structural steelwork and concrete reinforcement. |
| Hip: | A roof feature in which two pitched roofs meet at a corner; the rafter forming such a junction. The hip rafter is not usually a load bearing member. (Fr. arête (f) de croupe). |
| Hipped roof: | Featuring hips. |
| Hod: | A three sided container mounted on a pole, used to carry bricks or mortar up a ladder. |
| Hod carrier: | Bricklayer’s labourer. |
| Hoist: | An elevator for lifting goods and, usually, people up a scaffold. |
| Hollobolt: | Proprietary expanding bolt which can be used in making bolted connections to hollow sections, and other situations where lack of access prevents a nut being used. |
| Hollow section: | A tubular structural steel member, either circular (‘CHS’), rectangular (‘RHS’) or square (‘SHS’). Elliptical hollow sections are also available. |
| Honeycomb brickwork: | Built with gaps between the bricks, to allow ventilation. |
| Hundredweight: | In the UK imperial units system, a weight of 112 pounds, also equivalent to eight stone, or one twentieth of a ton. |
| Hydration: | The process by which cement hardens by reacting with water. |
| Hydraulic cement: | Cement which sets under water, like Portland cement. |
| I-section: | A structural steel section shaped like an I, such as a Universal Beam. |
| Imperial system: | The traditional system of weights and measures used in English-speaking countries until superseded by SI units in a process often called metrication, which took place in the UK in the early 1970s. The principal Imperial elements are yards (with their subdivisions of feet and inches), and pounds (divided into ounces and multiplied into hundredweights and tons). |
| Imposed load: | The weight of furniture, people, storage, and any other non-permanent loads. |
| Inch: | Unit of length in the Imperial system; one-twelfth of a foot, equal to 25.4mm. |
| Intrados: | The underside of an arch. |
| Ionic Order: | One of the ancient Greek orders of architecture, characterised by a fluted column and a capital consisting of four volute scrolls. Named after Ionia in Greece, where it was first used. |
| Iron: | An element, which is one of the most common on earth, and the principal component of steel. |
| Jack rafter: | A rafter that is shorter than a common rafter because it is intersected by a hip or a valley. |
| Jetty: | In traditional timber-framed buildings, the projection of an upper storey over the storey below. The reason for this form of construction seems originally to have been simply to increase the floor area of the upper storeys. |
| Jiffy hanger: | A proprietary steel component which enables a joist to be connected to another timber running at right angles. |
| Joinery: | The fabricated timber components of a building such as doors, windows and staircases. (Fr. menuiserie, f). |
| Jointing: | The process of finishing the mortar between bricks or other masonry units at the time of building, as opposed to pointing the joint later. |
| Joist: | (Timber) Horizontal member which is one of a group running parallel and close together, supporting a floor or flat roof. (Fr. solive, f). |
| Joist hanger: | Proprietary steel component to support the end of a joist so that it does not have to be built into the wall. |
| Kentledge: | Heavy weights used to counter balance a load or provide a reaction. |
| Keystone: | The centre stone of an arch, if it is larger than the ordinary voussoirs. |
| Kicker: | In reinforced concrete construction, a concrete plug typically 50 to 100mm high to help locate the formwork for a wall or column. |
| Kilogram: | The principle unit of mass in the SI system of weights and measures. Equal to 1000 grams. Abbreviation kg. Approximately equivalent to 2.2046 pounds. |
| KiloNewton: | One thousand Newtons – the unit of force in the SI system. Newtons are very small, and the kiloNewton is the practical unit most often used by engineers. In imperial terms it is approximately equivalent to the weight of two hundredweights. Abbreviation kN. |
| King post truss: | Roof truss with a central vertical member. |
| L: | |
| Labourer: | General labourer: building worker without any specific skill. Specific trades have their own labourers such as bricklayer’s, plasterer’s, labourer, whose job is to set up scaffolds and carry materials. |
| Lacing: | Generally horizontal members that connnect together and reduce the unsupported length of compression members. |
| Laminated strand lumber (LSL): | A type of reconstituted timber made of seperated strands glued together under pressure. |
| Lath: | A thin strip of wood nailed to studs or joists as a carrier for plaster. Early laths were riven (split with a blade); in more modern times they were sawn. Expanded metal lathing (e.m.l.) is used for the same purpose, especially for external work with sand and cement render; internally, laths have been superseded by plasterboard. |
| Ledger: | In scaffolding, the horizontal members running along the scaffold. They support transomes or putlogs. |
| Level: | Horizontal; the instrument used for checking whether things are horizontal. Levels on a drawing are heights above a recognised datum which might either be the Ordnance Datum or a local datum for the job, whose location and value has to be specified on the drawings. |
| Levelling: | Finding levels during surveying, or providing levels for new construction. |
| Lewis: | A device consisting of expanding wedges used for lifting heavy stone masonry. |
| Lift pit: | Every lift has (by law) to have a clear space below its lowest landing level, fitted with equipment intended to bring to a safe halt a lift which has failed to stop. This often requires a lift pit, typically 1.2 to 1.5m deep. |
| Lime Mortar: | The traditional form of mortar, it is soft and flexible and liable to dissolve slowly in rain water. It is still available for use in restoration work. |
| Lintel, lintol: | A short beam over a door or window opening; may be steel, concrete or, traditionally, timber. The spelling with an ‘o’ is traditionally favoured by draughtsmen; the ‘e’ however is given authority by the King James bible (Exodus 12:22 etc). (Fr. linteau, m). |
| Live load: | Imposed load. |
| Load bearing: | Designed to support a load in addition to its own weight. |
| Load factor: | Engineers design structures to support loads which are more than the maximum load expected. The actual loads are calculated as accurately as possible and then multiplied by the factor. Typical load factors are 1.4 for dead loads and 1.6 for imposed loads. |
| London stock: | The stock bricks made in the London area for centuries. |
| Manhole: | Hole in the ground to allow access to underground services; access chamber. |
| Mansard: | A roof which slopes steeply (e.g. 15 degrees from the vertical) to allow more space inside the roofspace. Named after a French architect. |
| Masonry: | In general usage this describes work constructed of stone, but technically the term masonry also includes brickwork and blockwork. (Fr. maçonnerie, m). |
| Mass: | A property of all matter. It is measured in, for example, grams. Mass is independent of gravity, unlike weight which depends on gravity. |
| Mass concrete: | Unreinforced concrete, as often used in foundations or other applications where the added strength of reinforcement is not required. |
| Maul: | Large wooden hammer used in masonry and paving work. |
| Method statement: | A document which shows how the construction will be carried out safely. Under most forms of contract the Contractor will prepare any necessary method statements and the Engineer will usually check them. Method statements are also sometimes required by neighbouring owners where potentially hazardous work is being proposed, or by Planning authorities to ensure that a proposal is buildable. |
| Metre: | The basic unit of length in the SI system of weights and measures. Multiplied and divided by 1000 to give derived units such as millimetres and kilometres. Symbol m. In the USA the spelling meter is used. A metre is approximately equivalent to 3ft, 33/8 inches. |
| Metric: | The UK construction and engineering industries were encouraged by the Government to adopt the metric system in the early 1970s. The system used was and remains (rather shortsightedly) based on millimetres rather than the centimetre system taught in schools in the UK and around the world. See SI system. |
| Mews: | In London and other large cities, the stables belonging to large houses would often be accessed from a small road running along the backs of the properties, known as the mews. The mews properties are often separated from their main house and converted to sought-after dwellings. |
| Mild steel: | Structural steelwork and reinforcement generally come in two qualities: mild steel and high-tensile steel, the latter being stronger but more expensive. |
| Mile: | Unit of length in the Imperial system; 1760 yards, equal to 1609.344 metres. |
| Mix: | The proportions of the ingredients of concrete, mortar and such like. |
| Mobile crane: | Versatile lifting devices in a range of sizes, usually telescopic. |
| Mock Tudor: | An architectural style popular in suburban development in the twenties and thirties, in which traditional styles were copied poorly. |
| Modulus of elasticity: | A measure of the amount by which something can be deformed by a force and recover when the force is removed. |
| Moment: | Short for bending moment. The bending force which acts on, for example, a beam, and is resisted by an equal internal resistance moment within the beam. |
| Mortar: | A binder for masonry. The traditional product was Lime Mortar; modern mortars rely upon cement mixed with sand, with the addition of lime or plasticizer added to make them workable or ‘buttery’. (Fr. mortier, m). |
| Mortice and tenon joint: | A traditional way of joining two timbers at right angles: the one coming in from the side is reduced to a tenon, which fits into the cavity or mortice and is secured by glue or nailing. |
| Moulding: | Timber (or other material in imitation of timber) shaped into a pattern and used for decorative details such as skirting, picture rail and so on. Traditional moulding shapes include quadrant, ogee, torus, chamfered, glass bead, half round, dowel and so on. |
| Moulding pin: | A very thin pin or nail used for securing mouldings. |
| Needle: | As a noun, a short beam introduced through a wall to provide temporary support while the wall is being re-supported. As a verb, to insert such beams. |
| Neutral axis: | The point near the middle of a beam’s cross-section which experiences neither tension nor compression when the beam is subjected to bending. |
| Newlyn datum: | See Ordnance datum. |
| Newton: | The principal SI unit of force. It can be thought of as equivalent to the weight of Sir Isaac Newton’s apple. |
| Node: | Theoretical point where two or more members are considered to be connected together. |
| Noggin (or nogging, naggin etc): | A short length of timber fixed crossways between joists, studs or rafters; also the infill between the studs of a traditional timber-framed building. |
| Also, the brickwork or other infill between the studs of traditional timber-framed construction. | |
| Ordnance datum (OD): | The national leveling standard for the UK, the basis for levelling set up by the Ordnance Survey, representing mean sea level at Newlyn, S Wales. |
| Ordnance Survey: | The organisation which makes and maintains accurate maps of the United Kingdom. The maps were originally for military purposes but are now used for land use planning and development of land. |
| Oriel window: | A bay window that projects from the wall and does not have its own foundations. |
| Padstone: | A block of concrete or stone used to spread the weight of a beam or joist, to avoid crushing the wall upon which it rests. |
| Parallel flange channel: | A form of steel channel. |
| Pargetting or pargeting: | (pronounced pargeing). Rendering, especially (1) decorative sculptured rendering on the outside of a building, found mainly in East Anglia (2) the render (traditionally consisting of cow manure) lining the inside of a flue, formed into a cylindrical tube by pulling up an iron sphere on a chain. |
| Partition: | A non load bearing wall between rooms or areas in a building. Partitions may be of any material but are often studwork. |
| Party wall: | A wall shared between two buildings. Laws have existed for many years, particularly in London but now throughout the UK, for governing the building, alteration and maintenance of party walls. (Fr. mur (m) mitoyen). |
| Pea shingle: | Shingle consisting of rounded stones that pass through a 10mm grid. |
| Permissible stress: | Stress that can be sustained safely. Codes of Practice for structural design used to specify permissible stresses with which the actual stress was to be compared. |
| Perp.: | The vertical mortar joint between two bricks (bricklayers’ slang). |
| Picture frame: | In structural engineering, a rectangular steel frame consisting of two columns and two beams, sometimes used when a load bearing wall has to be removed. |
| Pier: | A masonry column; a jetty. |
| Pile: | A foundation consisting of a deep column extending down into the ground, used when the foundation needs to get support from a deeper and stronger or more stable layer. Originally piles were timber (often elm) but they can now be concrete or steel or even aluminium. Bored piles are made by pouring concrete into a hole drilled in the ground whereas driven piles are ready-made and driven into the ground. There are many ingenious proprietary piling systems and piling can be used both for new buildings and for strengthening or stabilising the foundations of existing buildings. Contiguous piles are used to form a retaining-wall. |
| Pile cap: | A (normally reinforced concrete) structure transferring loads from the building into the piles. |
| Pile driver: | Machine for hammering or forcing piles into the ground. |
| Piling rig: | A machine which drills a hole in the ground for a cast-in-situ pile. |
| Pitch: | Of roofs, the angle of the rafters from the horizontal. Traditionally the pitch was expressed as the number of vertical inches corresponding to twelve horizontal inches, thus a 45 degree roof was described as a twelve inch pitch. |
| Pitched roof: | One whose slope exceeds ten degrees. |
| Planning: | The legal system, operated and enforced by local authorities, by means of which the development of land is controlled for the public good. Not to be confused with Building Control. |
| Plaster: | The material which is spread to leave a smooth surface on a wall or ceiling. The main binding material may be cement (when it is known in the UK as render), or lime, or gypsum, the latter two being restricted to internal use; in any case there will be a filler of sand, or in proprietary prepackaged plasters, powdered vermiculite. (Fr. plâtre, m; enduit (m) interieur). |
| Plasterboard: | A sandwich made of two sheets of cardboard with a gypsum plaster filling, typically 9mm or 12mm thick. Nailed or screwed to studs, joists or rafters as a carrier for a plaster skim finish, or plasterboards with chamfered edges can be jointed so that they act as a finish without being skimmed with plaster. Plasterboard helps to provide the resistance to fire of buildings. (Fr. placoplâtre, m, from a trade name). |
| Plum: | A large stone or piece of solid concrete used as a filler in mass concrete. |
| Plumb: | Vertical or verticality, measured using a plumb-line or plumb-rule or these days a spirit level. |
| Pointing: | The surface treatment of the mortar between bricks or other masonry units. There are various styles of pointing: flush, struck and weathered, recessed, tuck, bucket handle etc. (Fr. jontoiement, m). |
| Poling board: | A short strong board used in the temporary timbering of excavations and tunnels. |
| Portal frame: | A structural frame consisting of two columns and a cross- beam, with rigid connections. Often used for single-storey warehouses and workshops. The cross-beam is often formed as two rafters to make a pitched roof shape. |
| Portland cement: | A hydraulic cement used almost universally for making concrete and other cement based products. So-called because concrete made with it resembles limestone from the Isle of Portland. |
| Post stressed concrete: | Concrete strengthened with steel wires which are stressed after the concrete has cured. |
| Pound: | The unit of mass in the imperial system of weights and measures. Confusingly, the same word is also used sometimes for a unit of force, more accurately called a pound-force. The UK’s unit of currency called a pound was originally the value of a pound of ‘sterling’ silver. |
| Poundal: | A unit of force in the imperial system of weights and measures. |
| Precast concrete: | Concrete components made in a factory or yard and transported to the site. |
| Prestressed concrete: | Concrete strengthened with steel wires which are stressed before the concrete is poured. |
| Professional indemnity: | Insurance against claims against a professional person or practice. |
| Progressive collapse: | The process wherein the collapse of part of a building leads to the collapse of an adjacent part in ‘house of cards’ fashion. |
| Pugging: | Traditional infill between timber floor joists intended to enhance the acoustic insulation of the floor. It may occupy the whole depth of the floor or only part of it. Materials used include sand, mortar, concrete, straw and sea shells. |
| Pulverised fuel ash: | A fine white powder resulting from burning powdered coal in power stations, which can be used to supplement cement in making concrete for civil engineering works. |
| Purlin: | A horizontal structural member which supports a sloping roof covering, with or without rafters, and which carries the roof loads to the primary framing members. (Fr., panne, f). |
| Putlog or putlock: | A horizontal scaffold member one end of which is built into the wall. Putlog scaffolds are not much used these days because they can be dangerous, and because the hole in the wall has to be repaired when the scaffold is taken down. (Fr. boulin, m). |
| Quadrant: | A quarter of a circle. The name is also used for various things in this shape, such as a timber moulding, a corner kerbstone, or a historic navigational instrument. |
| Queen post truss: | A truss with two posts directly supporting the purlins. |
| Quoin: | The external corner where two brick walls meet. |
| Rafter: | Sloping structural member supporting a roof. (Fr. chevron, m). |
| Ready-mixed concrete: | Mixed in a batching plant and delivered in ready-mix trucks. |
| Recessed pointing: | Flat pointing set back from the surface of the bricks. |
| Rectangular hollow section: | A structural steel component in the shape of a steel tube with a rectangular cross section. |
| Reinforced concrete: | Concrete reinforced with steel bars to make a versatile structural material which is very strong in bending, shear, tension and compression, unlike plain concrete which is strong only in compression. |
| Reinforcement: | (Also known as rebar). Steel bars for reinforcing concrete. They are bent into special shapes according to the Engineer’s bending schedule, and fitted into the correct position by a skilled operative called a steelfixer. |
| Render: | Cement-based wall plaster. |
| Retaining wall: | Retains soil on one side. May be made of masonry, reinforced concrete, or various other traditional or proprietary structural systems. |
| Retention: | A percentage withheld from a contractor’s payment until an agreed time after the work is complete. |
| Ridge: | The top of a pitched roof, where roof planes that slope in opposite directions meet. (Fr. faîte, m). |
| Ridge board: | A thin timber used to align the tops of the rafters. In most roofs the ridge board is not a load bearing member. (Fr. planche (f) faîtière). |
| Ridge tile: | A curved tile which covers the ridge on a pitched roof. |
| Riser: | Vertical board rising from the back of one tread of a staircase to the front of the next. |
| Rising damp: | Water soaking up through the walls of the building. May be prevented by the use of a damp proof course in the walls. |
| Rivet: | Before structural steel I and H sections became available engineers made up sections by joining narrow plates together using steel rivets with a head formed by hammering while red-hot. Rivets are no longer used for connecting structural steelwork in the UK, with fabrications mostly replaced by ready made sections, and with bolting and welding available which are both faster and safer for connections. The presence of rivets in an existing structure can help in dating it, and usually indicates steelwork dating to before about the 1950s. |
| Rolled steel joist (RSJ): | One of a range of I- and H-shaped steel members. Only small sizes of joist are still produced, most of the larger sizes having been replaced by Universal Beam and Universal Column sections. RSJs were originally devised for use in filler-joist construction. |
| Rough arch: | A brick arch in which the bricks are rectangular and the arch shape is formed by means of the mortar joints being wedge-shaped. (cf ‘axed arch’). |
| Sand: | Aggregate consisting of mineral particles whose size is generally less than 5mm; fine aggregate. Merchants in the UK supply soft sand and coarse or fine sharp sand. |
| Sand-lime brick: | A kind of calcium silicate brick. |
| Sash window: | The traditional type of window which opens by sliding up and down. The frame is called a box-frame, because the side members are hollow wooden boxes inside which the counterweights slide up and down. The biggest problems with them are that over-zealous painting leaves them jammed shut, and the sash-cords have frequently to be replaced. Modern versions are available incorporating draught proofing and springs instead of weights. |
| Scaffold: | A framework for temporary access to building works. The traditional way to build a scaffold in the UK used to be with timber poles connected together with wire bonds. Standardised 1 15/16 inch (49mm) steel tube with proprietary steel connectors came into widespread use after the second world war, based on war surplus tubing that had been used in beach defenses. Various proprietary scaffolding systems are also available and may cost less, but “tube and fittings” scaffolding has the advantage of flexibility. (Fr. échafaudage, m). |
| Scaffold board: | Timber boards used to make walkways on a scaffold. |
| Scantling: | The cross-sectional dimensions of a length of timber; the principal dimensions of a shaped stone; a piece of timber of a specific size. |
| Scarf: | A traditional woodworking joint for extending the length of a timber. |
| Screed: | A temporary rail, installed at a specific level, to enable concrete to be finished at the correct level. Also sand and cement, mixed rather dry, laid on a (usually concrete) floor and screeded and trowelled to make a smooth surface. (Fr. chape, f). |
| Screw: | Threaded fastener. |
| Secant piles: | Contiguous piles where each pile cuts into the one before, to make a more-or-less waterproof retaining-wall. |
| Second fix: | (See first fix). Work which takes place after plastering, for example, fixing light switches, skirtings. |
| Services: | See: Building services. |
| Setting-out: | The process of making sure that a building or structure is built in the correct position and the right size. |
| Settlement: | The small downwards movement of foundations when the weight of the building comes onto them, due to compression of the soil. Tends to be negligible in clay soil but can be significant in sand. (Fr. tassement, m). |
| Shake: | A defect of timber: damage caused by rough handling. |
| Sharp sand: | Sand which, unlike soft sand, does not include fine silt or clay particles, making it more suitable for use in concrete and screed. |
| Shear or shear force: | The force which tends to make the top and bottom flanges or fibres of a beam move parallel to one another. The web of the beam resists the shear force, which is at its greatest at the ends of the beam next to where it rests on its supports. |
| Sheerlegs: | A lifting device using two timber poles fixed together at the top. |
| Shingle: | Aggregate consisting of stones whose size is between 5 and 10mm. Also, a wooden roof tile. |
| Shuttering: | Formwork. |
| Sill: | Projecting moulding at the bottom of a window or door. (Also spelled cill). |
| Simply supported: | Describes a beam which rests on a support at each end, that is, it is not supported at more than two points, is not held rigidly by the supports, and does not form part of a larger framework. |
| Skirting: | Timber or other moulding around the base of a wall. |
| Sleeper wall: | Supports a timber ground floor, and is often built in honeycomb brickwork to allow ventilation of the space under the floor. |
| Soaker: | A metal sheet bent at a right-angle, part of the waterproof flashing of the junction of a tiled or slated roof abutting a wall. |
| Soffite: | The underside of a building component such as a lintel or beam. A board fitted to the underside of the ends of rafters or flat roof joists. |
| Soft sand: | Sand which includes fine silt or clay particles, which make it more suitable for making mortar or render than sharp sand. |
| Softwood: | Timber from a coniferous tree, i.e. most of the timber used in construction. Softwood timber comes in a variety of grades, the most common for structural use being classes C16 (for general use) and C24 (stronger timber with fewer knots and defects). (Fr. bois (m) resineux). |
| Soil: | In engineering, the soil is all the solid materials below the earth’s surface, including rock, sand, clay and so on. |
| Soil Mechanics: | The science of the strength of soil. |
| Soldier: | A vertical member in a retaining-wall, especially in temporary works. |
| Sole plate: | A timber placed on the floor as the base for a partition. |
| Special (brick): | A brick specially made in a non-standard shape. |
| Special foundations: | Defined, in the Party Wall act, as foundations incorporating steel. |
| Spine wall or partition: | In traditional domestic construction, a load bearing partition between the front and rear rooms of the house. It supports the upper floors and, usually, the roof. |
| Splice: | A steelwork connection for joining (for example) two lengths of column to form a longer column. Beams can also be spliced, but the splice must not, if possible, be in the middle of the beam where the bending moment is greatest. |
| Springing: | The masonry supporting an arch. |
| Square: | Rectangular, or at a right angle; the tool used for checking rectangularity. |
| Square hollow section: | A structural steel section in the shape of a square tube. |
| Squint: | A special brick for use on a corner which is not a right-angle. |
| Stanchion: | Steel column. |
| Standard: | A vertical tube in scaffolding. |
| Steel: | A metal based on iron, with the addition of carefully defined quantities of carbon and other elements to produce a metal with specific qualities. Structural steel is used for steel frames and is weldable and easily cut and shaped. Steel reinforcement (qv) is designed to be cut and bent to shape. Modern steel use dates from the invention of the Bessemer converter, and the modern product differs from the older types of steel from which weapons were made. (Fr. acier, m) |
| Steel angle: | A structural steel component, the cross section of which is L-shaped. |
| Steelfixer: | A worker who specialises in placing reinforcement for reinforced concrete. |
| Stepped flashing: | Metal flashing cut in a stepped pattern to waterproof the junction of a tiled or slated roof with a brick wall. |
| Stock brick: | The traditional handmade brick without a frog, made by moulding clay in a wooden mould or ‘stock’. |
| Strain: | The amount by which something has changed length, measured as a percentage of its original length. |
| Strap: | A component, usually steel, installed to ensure that walls are connected to and restrained by floors. |
| Stress: | Force divided by area, measured in (for example) Newtons per square millimetre, or pounds per square foot. |
| Stress graded: | (Of timber) tested and marked with a strength grade. The two grades of softwood most used in construction are C16 or General Structural grade, and C24 or Special Structural grade. |
| Stretcher: | A brick whose longest side is visible on the surface of the wall. See header. |
| Stretcher bond: | A brickwork bond consisting only of stretchers, suitable for half-brick thick walls and cavity walls. |
| Stringer: | Angled structural beam supporting the treads and risers of a staircase. |
| Strike: | Dismantle (scaffold or falsework). |
| Struck and weathered pointing: | Finished with a sloping surface, recessed slightly at the top and protruding slightly at the bottom of the joint. |
| Structural Engineering: | A branch of engineering dealing with structures, such as buildings and bridges. In the UK structural engineers became distinguished from Civil Engineers when they started to specialise in the new structural material reinforced concrete in the early 20th century, although they soon began to work in all structural materials. |
| Structural glass: | Glass used in situations where it will or may support more than just its own weight. Glass balustrades, stairs and floor panels are becoming common. |
| Structural steelwork: | A frame of steel sections supporting other parts of the structure. |
| Stucco: | Rendering shaped and painted to resemble ashlar stonework. |
| Stud: | A timber post in a studwork partition or in traditional timber-framed construction. There are also steel studs made of lightweight galvanized steel. |
| Studwork: | A type of partition formed from studs at close intervals, traditionally clad with lath and plaster, now with plasterboard. |
| Subsidence: | A downwards movement, especially a movement of foundations. The term is most often used to describe the movement of foundations on clay soil, when the soil shrinks due to becoming drier. (Fr. affaissement, m). |
| Sulphate/sulfate: | Sulphates in soil or ground water can damage cement- based blocks, mortar or concrete. Special sulphate-resisting cement can be used to resist it. Sulphates in the ground are often a result of industrial pollution. |
| Systeme international (S.I.): | The system of units, based on the metre, kilogram and second, used by engineers in the UK and elsewhere. The metre and kilogram are divided and multiplied by 1000 to make larger and smaller units. Many think it is an odd system which is based on a unit, the kilogram, which is itself a multiple of another unit, being 1000 grams. |
| Temporary bench mark: | A levelling base point of known level. See bench mark. |
| Temporary works: | Propping or shoring to enable the permanent works to be carried out. |
| Tension: | A pulling force, such as that experienced by a cable, or in the bottom flange of a beam with a load on it. |
| Theodolite: | An optical instrument used by land surveyors for surveying and by engineers and builders for setting-out lines and angles on the ground. |
| Tie: | Any member which provides a tensile force to tie two other members together, especially, the bottom horizontal member of a roof truss, and (in a steel framed structure) steel beams whose main function is to tie columns together. |
| Tile: | Ceramic unit for wall decoration or roof weathering. |
| Timber: | Wood suitable for use in construction. In the UK it is usually softwood. (Fr bois, m). |
| Timber connector: | Various kinds of steel fixings designed to make high-strength connections in timber construction. |
| Timber-framed: | Construction in which the main load bearing elements are timber. Traditional timber-framed or ‘half-timbered’ houses are one example; modern timber framing uses timber load bearing panels made of studwork clad with plywood. |
| Ton: | Unit of mass or weight in the imperial system of weights. The UK or ‘long’ ton is equal to 20 hundredweights, 2240 pounds, or 1016 kg. In the US a ‘short ton’ of 2000 pounds is used. |
| Tonne: | Unit of mass in the SI system. Equal to 1000 kilograms. |
| Top plate: | A horizontal timber on top of a partition to receive the floor or roof timbers. |
| Tower crane: | A crane with the jib mounted at the top of a tower, to give clearance over obstructions. They may be static or tracked, with a rigid or ‘luffing’ (vertically hinged) jib. They are usually electrically operated. |
| Town planning or town and country planning: | The original name of the discipline and process which is these days generally known simply as planning. |
| Trade: | The various types of construction workers: electricians, carpenters, joiners and such like. |
| Tread: | A single step of a staircase. |
| Transome: | A component of scaffolding: a horizontal tube supporting the boards. Also a horizontal member in joinery, for example the part of the frame between an upper and lower window. |
| Tree preservation order: | An order under planning regulations, protecting a tree or group of trees from damage. |
| Trimmer: | A joist which carries extra loads, for example, those due to an opening or a partition. Trimmers should be stronger than the normal joists. Traditionally they were thicker, these days extra strength is achieved by bolting two or more timbers together. |
| Truss: | An arrangement of steel or timber components designed to span across a large distance to support a roof, floor or bridge. |
| Trussed rafters: | Wooden trusses, usually triangular in shape, spanning between the external walls at 600mm centres or thereabouts to form a roof. They are cheap and easy to use for new roofs and do not require internal support from beams or partitions, but their disadvantage is that they restrict the use of the loft space more than conventional ‘cut timber’ roofs. |
| Tuck pointing: | A difficult and expensive form of pointing. The joint is flush pointed with mortar coloured to match the bricks, and a very thin false joint is cut into the mortar and pointed in lime putty of a contrasting colour. Very difficult to get done today – the art is nearly lost. |
| Tuscan order: | The plainest of the five classical orders of architecture, similar to the Doric but with a plain rather than fluted shaft. |
| Tusk tenon joint: | Traditional timber connection, typically used to connect trimmers around a hearth. The tenon extends through the main joist and is fitted with a wooden wedge to stop the joint from opening up. In modern construction a steel bracket would be used instead, unless one were restoring a historical building. |
| Underpinning: | Making existing foundations deeper (by extending them downwards). Usually done with mass concrete but other high- and low-tech methods are available. |
| Universal Beam: | A standardised steel component which is I-shaped in cross section. Over 70 different sizes are available in two main steel grades. The Universal Beam and Universal Column were introduced in the late 1950s and were based on American patterns, and rolled in new ‘universal’ rolling mills. They replaced a range of sections which had been developed by various UK manufacturers over the preceding century. |
| Universal Column: | A standardised steel component which is H-shaped in cross-section. About 30 different sizes are available in the UK, in two main steel grades. The same comments apply as to Universal Beam above. |
| Valley: | The meeting of two roof planes at an internal angle; the rafter which forms the junction. |
| Valuation: | Building work is valued monthly by the Quantity Surveyor or Contract Administrator. |
| Vanity unit: | Washbasin built in to the top of a cupboard. |
| Variation: | A change to the building contract due to an instruction issued by the Contract Administrator. |
| Vault: | An ancient form of construction consisting of masonry formed in an arched shape. |
| Vermiculated: | Of stonework: carved in a random pattern fancifully comparable with the appearance of worms. |
| Vermiculite: | An expanded mineral used as lightweight aggregate in concrete and other filling applications. |
| Vierendeel girder: | A type of truss consisting of vertical and horizontal members arranged like a ladder on its side. |
| Voussoir: | One of the stones or bricks forming an arch. |
| Waling: | Horizontal steel or timber member in a retaining-wall, especially in temporary works. |
| Wane: | A defect of timber. The timber section is too small because it was cut too close to the edge of the trunk. |
| Web: | The middle plate of an I-beam, H-beam or channel. The web connects the two flanges, and resists shear forces. |
| Weight: | A force resulting from the effect of gravity on a mass. |
| Welding: | A technique for joining steel components by the deposition of small drops of molten steel which bonds to the parent metal. |
| Wind load: | Engineers have made great efforts to understand wind loading since the Tay Bridge disaster in 1879. |
| Withes: | (Pronounced whiffs)The usually half-brick thick dividers between flues in a chimney. |
| Woodscrew: | Threaded fastener for use in wood. |
| Yard: | The principal unit of length in the Imperial system; three feet, equal to 914.4mm. |
| Young’s modulus: | A measure of the elasticity of a material. Defined as stress divided by strain; see modulus of elasticity. |
| abbrev | define | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| AA | access authorization | |||||||||||||
| AAA | Agency Allegations Advisor | |||||||||||||
| AAAC | Affirmative Action Advisory Committee | |||||||||||||
| Aac | alternate ac | |||||||||||||
| AACC | American Association for Contamination Control | |||||||||||||
| AAEC | Australian Atomic Energy Commission | |||||||||||||
| AAECS | auxiliary area environmental control system | |||||||||||||
| AAEGTS | auxiliary area emergency gas treatment system | |||||||||||||
| AAHP | American Academy of Health Physics | |||||||||||||
| AAM | airborne activity monitor | |||||||||||||
| AAPM | American Association of Physicists in Medicine | |||||||||||||
| AAR | Aktiebolaget Atomenergi Research Reactor | |||||||||||||
| AARR | Argonne Advanced Research Reactor | |||||||||||||
| AASHTO | American Association of State Highway and Transportation Officials | |||||||||||||
| AATN | Asociación Argentina de Tecnología Nuclear (Argentina) | |||||||||||||
| AB | auxiliary boiler | |||||||||||||
| ABACC | Argentine-Brazilian Agency for Accounting and Control of Nuclear Material | |||||||||||||
| ABB-CE | Asea Brown Boveri-Combustion Engineering, Inc. | |||||||||||||
| ABCC | Atomic Bomb Casualty Commission | |||||||||||||
| ABET | Accreditation Board for Engineering and Technology | |||||||||||||
| ABFS | auxiliary building filter system | |||||||||||||
| ABGTS | auxiliary building gas treatment system | |||||||||||||
| ABHP | American Board of Health Physics | |||||||||||||
| ABHX | air blast heat exchanger | |||||||||||||
| ABI | auxiliary building isolation | |||||||||||||
| ABLE | activity balance line evaluation | |||||||||||||
| ABMA | American Boiler Manufacturers Association and Affiliated Industries | |||||||||||||
| ABNP | Alan R. Barton Nuclear Plant | |||||||||||||
| ABR | as-built reconciliation | |||||||||||||
| ABRR | as-built reverification record | |||||||||||||
| ABST | auxiliary building sump tank | |||||||||||||
| ABSVS | auxiliary building special ventilation system | |||||||||||||
| ABT | automatic bus transfer | |||||||||||||
| ABV | auxiliary building ventilation | |||||||||||||
| ABWR | advanced boiling-water reactor | |||||||||||||
| ABWRP | American Boiling Water Reactor Program | |||||||||||||
| AC | acid concentrator | |||||||||||||
| A&C | adequacy and compatibility | |||||||||||||
| AC | administrative control advisory committee air conditioning allegations coordinator |
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| ac | alternating current | |||||||||||||
| A/C | air conditioning | |||||||||||||
| A-C | Allis-Chalmers Corp. or Allis-Chalmers Manufacturing Company | |||||||||||||
| ACA | Arms Control Association | |||||||||||||
| ACAD | air containment atmosphere dilution | |||||||||||||
| ACB | air-operated circuit breaker Ateliers et Chantiers de Bretagne (France) |
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| ACC | accumulator air-cooled condenser |
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| ACCWS | auxiliary component cooling water system | |||||||||||||
| ACDA | Arms Control and Disarmament Agency | |||||||||||||
| ACEC | Ateliers de Constructions Electriques de Charleroi, S.A. (Belgium) | |||||||||||||
| ACF | acid concentrator feed ampacity correction factor automatic control feature |
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| acfm | actual cubic foot/feet per minute | |||||||||||||
| ACHP | Advisory Council on Historic Preservation | |||||||||||||
| ACI | American Concrete Institute automatic closure and interlock |
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| ACIWA | ac-independent water addition | |||||||||||||
| ACL | access control list alternate concentration limit |
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| ACLP | above-core load pad above-core load plane |
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| ACM | alternate contact mode auxiliary cooling method |
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| ACMUI | Advisory Committee on the Medical Uses of Isotopes (NRC) | |||||||||||||
| ACNFS | Advisory Committee on Nuclear Facility Safety (DOE) | |||||||||||||
| ACNP | American College of Nuclear Physicians | |||||||||||||
| ACNS | Advisory Committee on Nuclear Safety (Canada) | |||||||||||||
| ACNW | Advisory Committee on Nuclear Waste (NRC) | |||||||||||||
| ACORN | Association of Community Organizations for Reform Now | |||||||||||||
| ACOT | analog channel operational test | |||||||||||||
| ACP | auxiliary control panel | |||||||||||||
| ACPDS | Advisory Committee on Personal Dosimetry Services (NSF) | |||||||||||||
| ACPR | advanced core performance reactor advanced core pulsed reactor annular core pulsed reactor |
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| ACR | advanced converter reactor attribute coverage report |
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| ACRE | advanced compact reactor experiment | |||||||||||||
| ACRG | Advanced Code Review Group (NRC) | |||||||||||||
| ACRI | Air Conditioning and Refrigeration Institute | |||||||||||||
| ACRR | annular core research reactor | |||||||||||||
| ACRS | Advisory Committee on Reactor Safeguards (NRC) | |||||||||||||
| ACS | Advanced Computer System alternate core spray American Chemical Society auxiliary cooling system |
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| ACSNI | Advisory Committee on Safety of Nuclear Installations (U.K.) | |||||||||||||
| ACTIVITIES | automated commitment tracking system | |||||||||||||
| ACU | air cleanup unit | |||||||||||||
| AD | assistant director | |||||||||||||
| A/D | analog to digital | |||||||||||||
| ADAMS | Agencywide Documents Access and Management System | |||||||||||||
| ADAS | automatic data acquisition and storage | |||||||||||||
| ADC | authorized derivative classifier | |||||||||||||
| ADDS | applied digital data system | |||||||||||||
| ADEA | Association Belge pour le Développement Pacifique de l’Energie Atomique (Belgium) | |||||||||||||
| ADFCER | Assistant Director for Fuel Cycle and Environmental Research | |||||||||||||
| ADI | Applied Dynamics International | |||||||||||||
| ADM | Administration, Office of (NRC) | |||||||||||||
| AND | apparent discrepancy notification | |||||||||||||
| ADP | automated data processing | |||||||||||||
| ADPE | automatic data processing equipment | |||||||||||||
| ADR | audit discrepancy report | |||||||||||||
| ADRS | automated data retrieval system | |||||||||||||
| ADS | automated data system automatic depressurization system automatic dispatch system |
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| ADT | aerated drain tank | |||||||||||||
| ADU | ammonium diuranate | |||||||||||||
| ADV | atmospheric dump valve | |||||||||||||
| AE | acoustic emission | air ejector | architect-engineer | |||||||||||
| A/E | architect-engineer | |||||||||||||
| A-E | architect-engineer | |||||||||||||
| AEA | Atomic Energy Act of 1954 Atomic Energy Authority |
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| AEB | Atomic Energy Bureau (Korea) auxiliary equipment building |
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| AEC | Alternative Energy Coalition Atomic Energy Commission, U.S. (Became ERDA and NRC) |
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| AECB | Atomic Energy Control Board (Canada) | |||||||||||||
| AECC | Aerojet Energy Conversion Co. | |||||||||||||
| AECL | AECL Technologies Atomic Energy of Canada, Ltd. |
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| AECLT | Atomic Energy of Canada, Ltd., Technologies | |||||||||||||
| AECM | Atomic Energy Commission Manual | |||||||||||||
| AECPR | Atomic Energy Commission Procurement Regulation | |||||||||||||
| AEDE | annual effective dose equivalent | |||||||||||||
| AEE | Atomic Energy Establishment (Libya) | |||||||||||||
| AEEN | Agenzia Europea per l’Energia Nucleare Agence Européenne pour l’Energie Nucléaire |
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| AEEW | Atomic Energy Establishment of Winfrith (United Kingdom) | |||||||||||||
| AEF | Argonne Experimental Facility | |||||||||||||
| AEGTS | annulus exhaust gas treatment system | |||||||||||||
| AEI | Associated Electric Industries Ltd. (United Kingdom) | |||||||||||||
| AEN | Agence pour l’Energie Nucléaire (France) | |||||||||||||
| AENJ | Atlantic Electric of New Jersey | |||||||||||||
| AEO | Atomic Energy Organization (Iran) | |||||||||||||
| AEOD | Analysis and Evaluation of Operational Data, Office for (NRC) | |||||||||||||
| AEOF | alternate emergency operations facility | |||||||||||||
| AEOI | Atomic Energy Organization of Iran | |||||||||||||
| AEOR | Annual Environmental Operating Report | |||||||||||||
| AEP | American Electric Power Co., Inc. | |||||||||||||
| AEPSC | American Electric Power Service Corp. | |||||||||||||
| AERCW | auxiliary essential raw cooling water | |||||||||||||
| AERE | Atomic Energy Research Establishment (United Kingdom) | |||||||||||||
| AERO | Association for Excellence in Reactor Operations | |||||||||||||
| AES | aerospace and electronic systems | |||||||||||||
| AESJ | Atomic Energy Society of Japan | |||||||||||||
| AETR | advanced engineering test reactor advanced epithermal thorium reactor |
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| AF | alternating field auxiliary feed auxiliary feedwater |
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| AF/AL | as found, as left | |||||||||||||
| AFAS | auxiliary feedwater actuating system | |||||||||||||
| AFB | Air Force base | |||||||||||||
| AFBMA | Anti-Friction Bearing Manufacturers Association, Inc. | |||||||||||||
| AFC | automatic flow control | |||||||||||||
| AFD | acid fractionator distillate axial flux difference |
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| AFDC | auxiliary feedwater discharge cross-connection | |||||||||||||
| AFDS | automatic fire detection system | |||||||||||||
| AFI | Air Filter Institute | |||||||||||||
| AFL | active fuel length | |||||||||||||
| AFNE | Americans for Nuclear Energy | |||||||||||||
| AF | NETFAir Force Nuclear Engineering Test Facility | |||||||||||||
| AFO | auxiliary fuel oil | |||||||||||||
| AFOS | auxiliary fuel oil system | |||||||||||||
| AFP | auxiliary feedwater pump | |||||||||||||
| AFR | acid fractionation recycle acid fractionator recycle away from reactor |
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| AFRRI | Armed Forces Radiobiology Research Institute | |||||||||||||
| AFS | auxiliary feedwater system | |||||||||||||
| AFSR | Argonne Fast-Source Reactor | |||||||||||||
| AFW | auxiliary feedwater | |||||||||||||
| AFWAS | auxiliary feedwater actuation system | |||||||||||||
| AFWC | auxiliary feedwater control | |||||||||||||
| AFWS | auxiliary feedwater system | |||||||||||||
| AG | Aerojet-General Corp. | |||||||||||||
| AGA | automatic gas analyzer | |||||||||||||
| AGC | advanced gas centrifuge | |||||||||||||
| AGCR | advanced gas-cooled reactor | |||||||||||||
| AGC | Aerojet-General Corp. | |||||||||||||
| AGL | above-ground level | |||||||||||||
| AGMA | American Gear Manufacturers Association | |||||||||||||
| AGN | Aerojet-General Nucleonics | |||||||||||||
| AGNS | Allied-General Nuclear Services | |||||||||||||
| AGR | advanced gas-cooled reactor | |||||||||||||
| AGS | alternating gradient synchrotron | annular gas system | ||||||||||||
| AGU | American Geophysical Union | |||||||||||||
| AGVC | automatic governing valve control automatic governor valve control |
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| AGW | accident-generated water | |||||||||||||
| AGZ | actual ground zero | |||||||||||||
| A/H | air handling | |||||||||||||
| AHFR | Argonne High-Flux Reactor | |||||||||||||
| AHJ | authority housing jurisdiction | |||||||||||||
| AHM | auxiliary handling machine | |||||||||||||
| AHPA | Archeological and Historic Preservation Act | |||||||||||||
| AHR | aqueous homogeneous reactor | |||||||||||||
| AHTG | ad hoc task group | |||||||||||||
| AHU | air-handling unit | |||||||||||||
| AI | artificial intelligence Atomics International authorized inspector |
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| AIA | authorized inspection agency | |||||||||||||
| AICE | American Institute of Chemical Engineers | |||||||||||||
| AID | accident identification display Agency for International Development air inlet damper |
|||||||||||||
| AIEE | American Institute of Electrical Engineers | |||||||||||||
| AIF | Atomic Industrial Forum, Inc. (now NEI) | |||||||||||||
| AIG | antitrust and indemnity group | |||||||||||||
| AIGS | auxiliary inerting gas subsystem | |||||||||||||
| AIHA | American Industrial Hygiene Association | |||||||||||||
| AIHX | auxiliary intermediate heat exchanger | |||||||||||||
| AIMME | American Institute of Mining and Metallurgical Engineers | |||||||||||||
| AIMMPE | American Institute of Mining, Metallurgical, and Petroleum Engineers | |||||||||||||
| AIMS | automated information management system automatic isotopic measurement system |
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| AINSE | Australian Institute of Nuclear Science and Engineering (now ANSTO) | |||||||||||||
| AI&O | annual inspection and overhaul | |||||||||||||
| AIP | American Institute of Physics approval in principle |
|||||||||||||
| AIRI | Atomic Industry Research Institute | |||||||||||||
| AIRP | air intake, recirculation, and purification | |||||||||||||
| AIRS | Advanced Incident Reporting System (IAEA/NEA) advanced instrumentation for reflood studies Automated Inspection Report System |
|||||||||||||
| AIS | accumulator injection system advanced isotope separation automated information system |
|||||||||||||
| AISC | American Institute of Steel Construction | |||||||||||||
| AISE | Association of Iron and Steel Engineers | |||||||||||||
| AISI | American Iron and Steel Institute | |||||||||||||
| AISS | automated information systems security | |||||||||||||
| AISSP | automated information system security plan | |||||||||||||
| AIT | American Industrial Technologies | American Institute in Taiwan | augmented inspection team | |||||||||||
| AITS | action item tracking system | |||||||||||||
| AIX | after ion exchanger | |||||||||||||
| AKK | Atomkraftdonsortiet Krangede Ad & Co. (Sweden) | |||||||||||||
| AL | action level | analytical laboratory | analytical limit | |||||||||||
| ALAP | as low as possible | as low as practicable | as low as practical | |||||||||||
| ALARA | as low as reasonably achievable | |||||||||||||
| ALARP | as low as reasonably practicable | |||||||||||||
| ALATA | as low as technically achievable | |||||||||||||
| ALCP | area local control panel | |||||||||||||
| ALD | acoustic leak detection | |||||||||||||
| ALI | annual level of intake | |||||||||||||
| ALIP | annular linear induction pump | |||||||||||||
| ALJ | administrative law judge | |||||||||||||
| ALKEM | Alpha Chemie und Metallurgie, G.m.b.H. (Germany) | |||||||||||||
| ALMPC | Agency Labor-Management Partnership Committee | |||||||||||||
| ALMR | advanced liquid metal reactor | |||||||||||||
| ALMS | auxiliary liquid metal system | |||||||||||||
| ALP | assembly language preprocessor | |||||||||||||
| ALPHGR | average linear planar heat generation rate | |||||||||||||
| ALPR | Argonne Low Power Reactor | Army low-power reactor | ||||||||||||
| ALRR | Ames Laboratory Research Reactor | |||||||||||||
| ALRS | Apache Leap Research Site | |||||||||||||
| ALSI | aluminum silicon alloy | |||||||||||||
| ALUPA | Association Luxembourgeoise pour l’Utilisation Pacifique de l’Energie Atomique (Luxembourg) | |||||||||||||
| ALWR | advanced light-water reactor | |||||||||||||
| AMAD | activity median aerodynamic diameter | |||||||||||||
| AMASS | automated material accounting statistics system | |||||||||||||
| AMCA | Air Moving and Conditioning Association | |||||||||||||
| AMCF | alkali metal-cleaning facility | |||||||||||||
| AMCO | Aerojet Manufacturing Company | |||||||||||||
| AMD | alpha activity median diameter | |||||||||||||
| AMDEL | Australian Mineral Development Laboratories | |||||||||||||
| AMF | automated materials frisker | |||||||||||||
| AMI | automatic motion inhibit | |||||||||||||
| AMIC | Arkwright Mutual Insurance Co. | |||||||||||||
| AMN | Ansaldo Meccanico Nucleare, SpA (Italy) | |||||||||||||
| AMPERE | Atomes et Molecules pour Etudes Radio-Electriques (Switzerland) | |||||||||||||
| AMRR | Army Materiels Research Reactor | |||||||||||||
| AMS | aerial monitoring system | Allegations Management System | Army Map Service | |||||||||||
| AMSAC | ATWS (anticipated transient without scram) mitigating system actuation circuitry | |||||||||||||
| AMU | aqueous makeup | atomic mass unit | ||||||||||||
| A/N | alphanumeric | as needed | ||||||||||||
| ANC | advanced nodal code | Aerojet Nuclear Company | ||||||||||||
| ANCC | Associazione Nazionale per il Controllo della Combustione (Italy) | |||||||||||||
| ANDIN | Associazione Nazionale di Ingegneria Nucleare (Italy) | |||||||||||||
| ANEC | American Nuclear Energy Council | |||||||||||||
| ANF | actinide nitride fuel | actinide nitride fueled | Advanced Nuclear Fuels Corporation | |||||||||||
| ANFO | ammonium nitrate and fuel oil | |||||||||||||
| ANGRY | Anti-Nuclear Group Representing York | |||||||||||||
| ANI | American Nuclear Industries | American Nuclear Insurers | authorized nuclear inspector | |||||||||||
| ANIM | Association of Nuclear Instrument Manufacturers | |||||||||||||
| ANL | Argonne National Laboratory | |||||||||||||
| ANMC | American National Metric Council | |||||||||||||
| ANN | artificial neural network | |||||||||||||
| ANO | Arkansas Nuclear One | |||||||||||||
| ANOVA | analysis of variance | |||||||||||||
| ANP | aircraft nuclear propulsion | |||||||||||||
| ANPR | advance notice of proposed rulemaking | |||||||||||||
| ANPRM | advance notice of proposed rulemaking | |||||||||||||
| ANR | Association of Neutron Radiographers | |||||||||||||
| ANRA | Armenian Nuclear Regulatory Authority | |||||||||||||
| ANRE | Agency of Natural Resources and Energy (Japan) | |||||||||||||
| ANS | American Nuclear Society | aquatic nuisance species | autodial network system | |||||||||||
| ANSI | American National Standards Institute | |||||||||||||
| ANSTO | Australian Nuclear Science and Technology Organization (formerly AINSE) | |||||||||||||
| AO | abnormal occurrence | air operator | auxiliary operator | axial offset | ||||||||||
| AOA | axial offset anomaly | |||||||||||||
| AOC | action office contact | augmented operator capability | ||||||||||||
| AOG | acid fractionator off-gas | acid off-gas | augmented off-gas | |||||||||||
| AOI | abnormal operating instruction | advance ordering information | ||||||||||||
| AOO | anticipated operational occurrence | |||||||||||||
| AOP | abnormal operating procedure | |||||||||||||
| AOR | abnormal occurrence report | |||||||||||||
| AOT | action outage time | allowable outage time | allowed outage time | |||||||||||
| AOTA | absorber open test assembly | |||||||||||||
| AOV | air-operated valve | |||||||||||||
| AP | access permit | access permittee | administrative procedure | alkaline permanganate | annulus pressurization | antennas and propagation | ||||||||
| APA | Administrative Procedure Act | |||||||||||||
| APC | administration and project control | agency program coordinator | argon purge cart | Atomic Power Construction Ltd. (United Kingdom) | ||||||||||
| APCA | Air Pollution Control Association | |||||||||||||
| APCEF | Advanced Power Conversion Experimental Facility | |||||||||||||
| APCO | Alabama Power Company | |||||||||||||
| APD | axial power distribution | |||||||||||||
| APDA | Atomic Power Development Associates, Inc. | |||||||||||||
| APDMS | auxiliary power distribution monitoring system | axial power distribution monitoring system | ||||||||||||
| APET | accident progression event tree | |||||||||||||
| APEX | Advanced Plant Experiment | |||||||||||||
| APFA | accelerator pulsed fast critical assembly | |||||||||||||
| APHA | American Public Health Association | |||||||||||||
| API | absolute position indication | American Petroleum Institute | antecedent precipitation index | |||||||||||
| APL | Applied Physics Laboratory (University of Chicago) | Arkansas Power & Light Co. | authorized possession limit | |||||||||||
| AP&L | Arizona Power & Light Company | |||||||||||||
| APLHGR | average planar linear heat generation rate | |||||||||||||
| APM | air particulate monitor | aluminum powder metallurgy | ||||||||||||
| APP | advance procurement plan | |||||||||||||
| APPA | American Public Power Association | |||||||||||||
| APPR | Army Package Power Reactor | |||||||||||||
| APR | advance production release | Army Power Reactor | automatic pressure relief | |||||||||||
| APRF | Aberdeen Pulsed Reactor Facility | |||||||||||||
| APRM | average power range monitor | |||||||||||||
| APS | accident-prone situation | American Physics Society | Arizona Public Service Co. | atomic power station | auxiliary power system | |||||||||
| AP600 | Advanced Plant, 600 MWe | |||||||||||||
| APSR | axial power shaping rod | |||||||||||||
| APSRA | axial power shaping rod assembly | |||||||||||||
| APT | accelerator-produced tritium | Applied Physical Technology Incorporated | ||||||||||||
| APTR | advanced pressure tube reactor | |||||||||||||
| APU | auxiliary power unit | |||||||||||||
| APWG | action plan work group | |||||||||||||
| APWR | advanced pressurized-water reactor | |||||||||||||
| AQL | acceptable quality level | |||||||||||||
| AR | activity ratio | |||||||||||||
| ARAC | atmospheric release advisory capability | |||||||||||||
| ARACOR | Advanced Research and Applications Corp. | |||||||||||||
| ARAVS | auxiliary and radwaste area ventilation system | |||||||||||||
| ARB | Allegation Review Board | |||||||||||||
| ARBOR | Argonne Boiling Water Reactor | |||||||||||||
| ARC | alarm response card | Alliance Research Center | alternate repair criteria | alternative repair criteria | auxiliary relay cabinet | |||||||||
| ARDA | Atomic Research and Development Authority | |||||||||||||
| ARDM | age-related degradation mechanism | |||||||||||||
| ARDUTLR | aging-related degradation unique to license renewal | |||||||||||||
| ARE | aircraft reactor equipment | |||||||||||||
| AREA | American Railway Engineering Association | Army Reactor Area | ||||||||||||
| ARG | Accident Review Group (NRC) | |||||||||||||
| Argonaut | Argonne nuclear assembly for university training | |||||||||||||
| ARHCO | Atlantic Richfield Hanford Co. | |||||||||||||
| ARI | alternate rod insertion | ATWS (anticipated transient without scram) rod injection | ||||||||||||
| ARIS | automated reactor inspection system | |||||||||||||
| ARM | area radiation monitor | |||||||||||||
| ARMF | Advanced Reactivity Measurement Facility | |||||||||||||
| ARMS | aerial radiological measurement and survey | aerial radiological measurements system | area radiation monitoring system | area radiological monitoring system | ||||||||||
| ARO | all rods out | |||||||||||||
| ARP | accelerated requalification program | alarm response procedure | annunciator response procedure | |||||||||||
| ARPA | Archeological Resources Protection Act | |||||||||||||
| ARPI | absolute rod position indication | |||||||||||||
| ARR | Armour Research Reactor | Association for Radiation Research (United Kingdom) | ||||||||||||
| ARRS | airborne radioactivity removal system | |||||||||||||
| ARS | acute radiation syndrome | advance record system | air return system | amplified response spectrum/spectra | ||||||||||
| ART | aerosol release and transport | anticipatory reactor trip | ||||||||||||
| ARTS | anticipatory reactor trip system | |||||||||||||
| AS | action statement | Agreement State | air supply | auto sequential | auxiliary steam | |||||||||
| A/S | air supply | |||||||||||||
| ASA | American Standards Association (now ANSI) | |||||||||||||
| ASADA | Atomic Space and Development Authority | |||||||||||||
| ASC | Administrative Services Center | |||||||||||||
| ASCE | American Society of Civil Engineers | |||||||||||||
| ASCEG | Association of South Carolina Electric and Gas Investors | |||||||||||||
| ASCII | American Standard Code for Information Interchange | |||||||||||||
| ASCO | American Switch Co. | |||||||||||||
| ASCS | Agricultural Stabilization and Conservation Service | |||||||||||||
| ASD | adjustable speed drive | atmospheric steam dump | ||||||||||||
| ASDP | alternative shutdown procedure | |||||||||||||
| ASEE | American Society of Electrical Engineers | |||||||||||||
| ASEP | accident sequence evaluation program | |||||||||||||
| ASG | auxiliary steam generator | |||||||||||||
| ASGT | asymmetric steam generator transient | |||||||||||||
| ASGTPTF | asymmetric steam generator transient protective trip function | |||||||||||||
| ASHAE | American Society of Heating and Air Conditioning Engineers | |||||||||||||
| ASHRAE | American Society of Heating, Refrigeration and Air Conditioning Engineers | |||||||||||||
| ASI | adverse system interaction | axial shape index | ||||||||||||
| ASIS | American Society for Industrial Security | |||||||||||||
| ASL | approved suppliers list | |||||||||||||
| ASLAB | Atomic Safety and Licensing Appeal Board (NRC) | |||||||||||||
| ASLAP | Atomic Safety and Licensing Appeal Panel (NRC) | |||||||||||||
| ASLB | Atomic Safety and Licensing Board (NRC) | |||||||||||||
| ASLBP | Atomic Safety and Licensing Board Panel (NRC) | |||||||||||||
| ASM | American Society for Metals (now ASM International) | |||||||||||||
| ASME | American Society of Mechanical Engineers | |||||||||||||
| ASME | CodeAmerican Society of Mechanical Engineers Boiler and Pressure Vessel Code | |||||||||||||
| ASNT | American Society for Nondestructive Testing | Australian School of Nuclear Technology | ||||||||||||
| ASP | accident sequence precursor | administrative site procedure | auxiliary shutdown panel | |||||||||||
| ASPEA | Association Suisse pour l’Energie Atomique (Switzerland) | |||||||||||||
| ASQC | American Society for Quality Control | |||||||||||||
| ASR | automatic send and receive | |||||||||||||
| ASS | auxiliary steam system | |||||||||||||
| ASSE | American Society of Safety Engineers | |||||||||||||
| ASSP | acoustics, speech, and signal processing | |||||||||||||
| ASTM | American Society for Testing and Materials | |||||||||||||
| ASTPO | Accident Source Term Program Office | |||||||||||||
| ASTR | Aerospace Systems Test Reactor | |||||||||||||
| ASW | auxiliary saltwater | auxiliary service water | ||||||||||||
| AT | acceptable test | acceptance tag | acceptance test | |||||||||||
| ATC | adiabatic toroidal compressor | |||||||||||||
| ATEL | Aare Tessin Aktiengesellschaft für Elektrizität (Switzerland) | |||||||||||||
| ATEN | Association Technique de l’Energie Nucléaire (France) | Association Technique pour la Production et l’Utilisation de l’Energie Nucléaire (France) | ||||||||||||
| ATF | acceptance test facility | Alcohol, Tobacco and Firearms, Bureau of (U.S. Department of Treasury) | ||||||||||||
| ATH | artificial time history | |||||||||||||
| ATOG | abnormal transient operational guideline | anticipated transient operating guideline | ||||||||||||
| ATP | acceptance test plan | acceptance test procedure | ||||||||||||
| A&TP | assembly and test pit | |||||||||||||
| ATR | advanced test reactor | |||||||||||||
| ATRCE | advanced test reactor critical experiment | |||||||||||||
| ATS | agency training system | Arkwright Technical Services, Inc. | Atomtekniska Sällskapet i Finland (Finland) | |||||||||||
| ATSR | Argonne Thermal Source Reactor | |||||||||||||
| ATT | aerosol transport test | automatic turbine tester | ||||||||||||
| ATTU | ATWS (anticipated transient without scram) transmitter trip unit | |||||||||||||
| ATU | analog trip unit | |||||||||||||
| ATWS | anticipated transient without scram | |||||||||||||
| ATWS-RPT | anticipated transient without scram–recirculation pump trip | |||||||||||||
| ATWT | anticipated transient without trip | |||||||||||||
| AU | authorized user | |||||||||||||
| AUDIT | automatic unattended detection inspection transmitter | |||||||||||||
| AUEA | auxiliary utility equipment area | |||||||||||||
| AUO | auxiliary unit operator | |||||||||||||
| AUT | automated ultrasonic test | |||||||||||||
| AUTODIN | automated digital network | |||||||||||||
| AUTOS | agency upgrade of technology for office systems | |||||||||||||
| AUXI-ATOME | Société Auxiliaire pour l’Energie Atomique (France) | |||||||||||||
| AVB | antivibration bar | |||||||||||||
| AVIS | atomic vapor isotope separation | |||||||||||||
| AVLIS | atomic vapor laser isotope separation | |||||||||||||
| AVMS | annulus vacuum maintenance system | |||||||||||||
| AVR | Arbeitsgemeinschaft Versuchsreaktor, G.m.b.H. (Germany) | automatic volume recognition | ||||||||||||
| AVSS | automated vendor selection system | |||||||||||||
| AVT | all-volatile treatment | |||||||||||||
| AVV | atmospheric vent valve | |||||||||||||
| AW | acid waste | |||||||||||||
| AWCC | active well coincidence counter | |||||||||||||
| AWG | American wire gauge | |||||||||||||
| AWNS | ABB Westinghouse Nuclear Services | |||||||||||||
| AWP | automatic withdrawal prohibit | |||||||||||||
| AWRE | Atomic Weapons Research Establishment (United Kingdom) | |||||||||||||
| AWS | American Welding Society | |||||||||||||
| AWSF | alpha waste storage facility | |||||||||||||
| AWWA | American Water Works Association | |||||||||||||
| AZPS | Arizona Public Service Co. | |||||||||||||
| BA | biological assessment | |||||||||||||
| B/A | budget authority | |||||||||||||
| BAA | broad agency announcement | |||||||||||||
| BAC | blood alcohol content | boric acid concentrator | ||||||||||||
| BACT | best available control technology | |||||||||||||
| BAF | bioaccumulation factor | bottom of active fuel | ||||||||||||
| BAM | Bundesanstalt für Materialforschung und -prüfung (Germany) | |||||||||||||
| BAMT | boric acid mix tank | |||||||||||||
| BAP | branch arm piping | |||||||||||||
| BAPE | branch arm piping enclosure | |||||||||||||
| BAPL | Bettis Atomic Power Laboratory | |||||||||||||
| BAPS | branch arm piping shielding | |||||||||||||
| BARC | Bhabha Atomic Research Centre (India) | |||||||||||||
| BART | butterfly analysis and review test | |||||||||||||
| BAST | boric acid storage tank | |||||||||||||
| BAT | backup auxiliary transformer | best available technology | boric acid tank | boric acid transfer | ||||||||||
| BATAN | Badan Tenaga Atom Nasional (Indonesia) | |||||||||||||
| BATEA | best available technology economically available | |||||||||||||
| BATF | Bureau of Alcohol, Tobacco and Firearms (U.S. Department of Treasury) | |||||||||||||
| BAWTR | Babcock & Wilcox Nuclear Development Center Test Reactor | |||||||||||||
| BBC | Brown Boveri et Cie (Switzerland) | |||||||||||||
| BBR | Babcock-Brown Boveri Reaktor, G.m.b.H. (Germany) | |||||||||||||
| BBRR | Brookhaven Beam Research Reactor | |||||||||||||
| BBS | battery backup system | bulletin board system | ||||||||||||
| BBV | Bayrische Biologische Versuchsanstalt (Germany) | |||||||||||||
| BC | benign contamination | branch chief | ||||||||||||
| BCD | Battelle Columbus Division | binary coded decimal | ||||||||||||
| BCHFT | beyond critical heat flux test | |||||||||||||
| BCL | Battelle Columbus Laboratories | Bechtel client letter | ||||||||||||
| BCMS | boron concentration measurement system | |||||||||||||
| BCS | Boeing Computer Services | |||||||||||||
| BCT | best conventional technology | |||||||||||||
| BD | blowdown | |||||||||||||
| BDAT | best demonstrated available technology | |||||||||||||
| BDBA | beyond-design-basis accident | |||||||||||||
| BDBE | beyond-design-basis event | |||||||||||||
| BDE | beyond demonstrable effect | |||||||||||||
| BD/ECC | blowdown/emergency core cooling | |||||||||||||
| BDHT | blowdown heat transfer | |||||||||||||
| BDPS | boric dilution protection system | |||||||||||||
| BDT | best demonstrated technology | |||||||||||||
| BE | best estimate | binding energy | bounding event | |||||||||||
| BEA | Bureau of Economic Analysis | |||||||||||||
| BEAR | Biological Effects of Atomic Radiation, Committee on the | |||||||||||||
| BEC | beginning-of-equilibrium cycle | |||||||||||||
| BECO | Boston Edison Co. | |||||||||||||
| BEEN | Bureau d’Etude de l’Energie Nucléaire (Belgium) | |||||||||||||
| BEF | best-estimate flow | |||||||||||||
| BEIR | Biological Effects of Ionizing Radiation, Committee on the | |||||||||||||
| BEN | Bureau d’Etudes Nucléaires, S.A. (Belgium) | |||||||||||||
| BEPO | British Experimental Pile Operation | |||||||||||||
| BFN | Browns Ferry Nuclear Power Plant | |||||||||||||
| BFNP | Browns Ferry Nuclear Power Plant | |||||||||||||
| BFNPP | Browns Ferry Nuclear Performance Plan | Browns Ferry Nuclear Power Plant | ||||||||||||
| BFO | best and final offer | |||||||||||||
| BFY | budget fiscal year | |||||||||||||
| BG&E | Baltimore Gas & Electric Co. | |||||||||||||
| BGL | below ground level | |||||||||||||
| BGRR | Brookhaven Graphite Research Reactor | |||||||||||||
| BGV | below ground vault | |||||||||||||
| BH | Blue Hills Station | |||||||||||||
| BHEC | Bangor Hydro-Electric Co. | |||||||||||||
| BHEP | basic human error probability | |||||||||||||
| BHL | bottom of heated length | |||||||||||||
| BHP | biological hazard potential | |||||||||||||
| BHS | Blue Hills Station | |||||||||||||
| BHSP | basic human success probability | |||||||||||||
| BI | background information | |||||||||||||
| BIA | buyers information advisory | |||||||||||||
| BIF | basic inflow | |||||||||||||
| BIFEN | Banque Internationale pour le Financement de l’Energie Nucléaire (France) | |||||||||||||
| BIOMASS | Biosphere Modeling and Assessments (project) | |||||||||||||
| BIOMOVS | IIBiosphere Model Validation Study, Phase II | |||||||||||||
| BIOS | basic input-output system | biological investigation of space | ||||||||||||
| BIR | boron injection recirculation | |||||||||||||
| BIST | boron injection surge tank | |||||||||||||
| BIT | boron injection tank | |||||||||||||
| BKW | Bernische Kraftwerke, A.G. (Switzerland) | |||||||||||||
| BLBE | beyond-licensing-basis event | |||||||||||||
| BLIS | baffle/liner interface seal | |||||||||||||
| BLM | Bureau of Land Management | |||||||||||||
| BLP | basket loading pool | |||||||||||||
| BLTC | bottom loading transfer cask | |||||||||||||
| BM | bill of material | boron measurement | ||||||||||||
| BMEP | brake mean effective power | brake mean effective pressure | ||||||||||||
| BMEWS | ballistic missile early warning system | |||||||||||||
| BMFT | Bundesministerium für Forschung und Technologie (Germany) | |||||||||||||
| BMI | Battelle Memorial Institute | |||||||||||||
| BML | bidders mailing list | bulk material length | ||||||||||||
| BMR | Bureau of Mineral Resources (Australia) | |||||||||||||
| BMRR | Brookhaven Medical Research Reactor | |||||||||||||
| BMS | boron management system | boron measurement system | ||||||||||||
| BMT | basement melt-through | |||||||||||||
| BN | Belgonucléaire S. A. (Belgium) | board notification | Buestra Neutron (Soviet-designed fast-neutron reactor) | |||||||||||
| BNC | Berkeley Nucleonics Corporation | |||||||||||||
| BNDC | British Nuclear Design & Construction Ltd. | |||||||||||||
| BNEC | British Nuclear Energy Conference | |||||||||||||
| BNES | British Nuclear Energy Society | |||||||||||||
| BNF | British Nuclear Forum | |||||||||||||
| BNFL | British Nuclear Fuels, Limited | |||||||||||||
| BNFP | Barnwell Nuclear Fuel Plant | |||||||||||||
| BNI | Bechtel National, Inc. | |||||||||||||
| BNL | Brookhaven National Laboratory | |||||||||||||
| BNP | Bellefonte Nuclear Plant | |||||||||||||
| BNWL | Battelle Northwest Laboratory | |||||||||||||
| BO | biological opinion | |||||||||||||
| B/O | budget overlay | |||||||||||||
| B&O | bulletin and order | |||||||||||||
| BOA | basic order agreement | blanket order agreement | ||||||||||||
| BOC | beginning of cycle | Bevitron orbit code | bottom of conduit | budget object classification | ||||||||||
| BOD | biochemical oxygen demand | biological oxygen demand | ||||||||||||
| BOEC | beginning-of-equilibrium cycle | |||||||||||||
| BOG | burner off-gas | |||||||||||||
| BOL | beginning of life | |||||||||||||
| BONUS | boiling nuclear superheat reactor | |||||||||||||
| BONUS-CX | boiling nuclear superheat critical experiment | |||||||||||||
| BOP | balance of plant | |||||||||||||
| BOPSSAR | balance-of-plant standard safety analysis report | |||||||||||||
| BORAX | boiling-water reactor experiment | |||||||||||||
| BORE | beryllium oxide reactor experiment (formerly EBOR) | |||||||||||||
| B&OTF | bulletins and orders task force | |||||||||||||
| B/P | blueprint | |||||||||||||
| BPA | blanket purchase agreement | Bonneville Power Administration | ||||||||||||
| BPC | Bechtel Power Corporation | |||||||||||||
| BPF | blueprint file | |||||||||||||
| BPFM | bypass flow module | |||||||||||||
| BPHA | benzoylphenylhydroxylamine | |||||||||||||
| BPID | book physical inventory difference | |||||||||||||
| BPN | breakdown pulse noise | |||||||||||||
| BPNL | Battelle Pacific Northwest Laboratory | |||||||||||||
| BPR | beryllium physics reactor | burnable poison rod | business process redesign | business process reengineering | ||||||||||
| BPRA | burnable poison rod assembly | |||||||||||||
| BPV | boiler and pressure vessel | bypass valve | ||||||||||||
| B&PV | boiler and pressure vessel | |||||||||||||
| BPVC | Boiler and Pressure Vessel Committee | |||||||||||||
| BPWS | blanked position withdrawal sequence | |||||||||||||
| Bq | becquerel | |||||||||||||
| BR | breeder reactor | breeding ratio | ||||||||||||
| B&R | Brown and Root, Inc. | budget and reporting | Burns and Roe, Inc. | |||||||||||
| BRC | below regulatory concern | Breeder Reactor Corporation | Bureau of Radiation Control (State of Texas) | |||||||||||
| BREDAT | Breda Termomeccanica, SpA (Italy) | |||||||||||||
| BREN | Bare Reactor Experiment Nevada | |||||||||||||
| BREVATOME | Société Française pour la Gestion des Brevets d’Application Nucléaire (France) | |||||||||||||
| BRG | budget review group | |||||||||||||
| BRH | Bureau of Radiological Health | |||||||||||||
| BRP | Bureau of Radiation Protection | |||||||||||||
| BRPNP | Big Rock Point Nuclear Plant | |||||||||||||
| BRR | Battelle Research Reactor | Brookhaven Research Reactor | ||||||||||||
| BRS | Bibliographic Retrieval System | boron recycle system | ||||||||||||
| BRWM | Board on Radioactive Waste Management | |||||||||||||
| BS | Braidwood Station | Byron Station | ||||||||||||
| B/S | bistable | |||||||||||||
| BSEP | Brunswick Steam Electric Plant | |||||||||||||
| BSF | bulk shielding facility | |||||||||||||
| BSI | British Standards Institution | |||||||||||||
| BSL | Bignier Schmid-Laurent (France) | |||||||||||||
| BSR | Board of Standards Review (American National Standards Institute) | bulk shielding reactor | ||||||||||||
| BSS | basic safety standard | |||||||||||||
| BST | bleed storage tank | blowdown suppression tank | boron storage tank | |||||||||||
| BT | boiling transition | broadcast technology | ||||||||||||
| BTFA | benzoyltrifluoroacetone | |||||||||||||
| BTP | backfit test program | branch technical position | ||||||||||||
| BTR | boron thermal regeneration | |||||||||||||
| BTRS | boron thermal regeneration system | |||||||||||||
| BTS | Brazilian thorium sludge | |||||||||||||
| BUSS | backup scram system | |||||||||||||
| B&V | Black & Veatch | |||||||||||||
| BVFA | Bundesversuchs- und Forschungsanstalt Arsenal (Austria) | |||||||||||||
| BVPS | Beaver Valley Power Station | |||||||||||||
| B&W | Babcock & Wilcox Co. (now Framatome) | |||||||||||||
| B&WC | Babcock & Wilcox Canada | |||||||||||||
| BWC | Bingham-Willamette Co. | |||||||||||||
| BWF | building wake factor | |||||||||||||
| B&WFC | Babcock & Wilcox Fuel Co. | |||||||||||||
| BWIP | basalt waste isolation program | |||||||||||||
| B&WNT | Babcock & Wilcox Nuclear Technologies | |||||||||||||
| B&WOG | Babcock & Wilcox Owners Group | |||||||||||||
| BWR | boiling-water reactor | |||||||||||||
| BWROG | Boiling Water Reactor Owners Group | |||||||||||||
| BWRVIP | Boiling Water Reactor Vessel and Internals Project | |||||||||||||
| B&WSSAR | Babcock & Wilcox Standard Safety Analysis Report | |||||||||||||
| BWST | borated water storage tank | |||||||||||||
| CA | charge amplifier | construction authorization | contract authorization | critical assembly | ||||||||||
| C/A | corrective action | |||||||||||||
| CAA | Clean Air Act | |||||||||||||
| CAC | carrier access code | containment atmosphere control | ||||||||||||
| CACS | containment air cooling system | core auxiliary cooling system | ||||||||||||
| CACW | core auxiliary cooling water | |||||||||||||
| CACWS | core auxiliary cooling water system | |||||||||||||
| CAD | computer-aided design | construction aid document | containment atmosphere dilution | |||||||||||
| CAES | compressed air energy storage | |||||||||||||
| CAF | chemical analysis facility | |||||||||||||
| CAFEE | critical assembly fuel element exchange | |||||||||||||
| CAFTA | cutset and fault tree analysis | |||||||||||||
| CAGT | collaborative advanced gas turbine | |||||||||||||
| CAHE | core auxiliary heat exchanger | |||||||||||||
| CAI | construction action item | computer-assisted instruction | ||||||||||||
| CAIT | corrective action investigation team | |||||||||||||
| CAL | confirmatory action letter | corrective action letter | ||||||||||||
| CALUTRON | California University Cyclotron | |||||||||||||
| CAM | constant air monitor | containment atmospheric monitoring | continuous air monitor | |||||||||||
| CAMEL | component and material evaluation loop | |||||||||||||
| CAMEN | Centro Autònomo Militari Energia Nucleare (Italy) | |||||||||||||
| CAN | Citizen’s Awareness Network | |||||||||||||
| CANDU | Canadian Deuterium-Natural Uranium Reactor | Canadian Deuterium Uranium Reactor | Canadian Natural-Uranium, Heavy-Water-Moderated and -Cooled Power Reactor | |||||||||||
| CANE | Connecticut Aircraft Nuclear Experiment | |||||||||||||
| CAOC | constant axial offset control | |||||||||||||
| CAP | codes and paging | continuous audit program | corrective action plan | corrective action program | ||||||||||
| CAPCG | Central Area Power Coordination Group | |||||||||||||
| CAPES | containment atmosphere purge exhaust system | |||||||||||||
| CAPS | cell atmosphere processing system | construction advanced planning and sequencing | ||||||||||||
| CAQ | condition adverse to quality | |||||||||||||
| CAQR | condition adverse to quality report | |||||||||||||
| CAR | condenser air removal | configuration acceptance review | containment air recirculation | control advisory release | corrective action report | |||||||||
| CARA | Compagnie d’Applications et de Recherches Atomiques (France) | |||||||||||||
| CARATOM | Compagnie d’Applications et de Recherches Atomiques (France) | |||||||||||||
| CARC | containment air recirculation and cooling | |||||||||||||
| CARS | condenser air removal system | containment atmosphere release system | containment atmosphere recirculation system | |||||||||||
| CAS | central alarm station | central alarm system | chemical addition system | circuits and systems | compressed air system | |||||||||
| CASE | Citizens Action for Safe Environment | Citizens Association for Sound Energy | consolidated aerospace supplier evaluation | coordinating agency for supplier evaluation | ||||||||||
| CAT | chemical addition tank | computerized axial tomography | conditionally accepted tag | construction appraisal team | crack arrest technology | crack arrest temperature | crack arrest test | |||||||
| CATD | corrective action tracking document | |||||||||||||
| CAV | crack arrest verification | |||||||||||||
| CAVALIER | Cooperatively Assembled Virginia Low-Intensity Educational Reactor | |||||||||||||
| CB | containment building | control building | ||||||||||||
| CBAST | concentrated boric acid storage tank | |||||||||||||
| CBD | Commerce Business Daily | |||||||||||||
| CBDT | cause-based decision tree (method) | |||||||||||||
| CBE | Citizens for a Better Environment | |||||||||||||
| CBECS | control building environmental control system | |||||||||||||
| CBI | Chesapeake Bay Institute | CBI Industries (formerly Chicago Bridge and Iron Co.) | ||||||||||||
| CB&I | Chicago Bridge and Iron Co. (later CBI Industries) | |||||||||||||
| CBL | Chesapeake Bay Laboratory | Chesapeake Biological Laboratory | ||||||||||||
| CBLA | cost-beneficial licensing action | |||||||||||||
| CBM | circuit breaker manufacturer | |||||||||||||
| CBP | condensate booster pump | |||||||||||||
| CBPC | Corn Belt Power Cooperative | |||||||||||||
| CBPT | closed-loop in-reactor assembly backup plug tool | |||||||||||||
| CBR | commercial breeder reactor | |||||||||||||
| CBSR | coupled breeding superheating reactor | |||||||||||||
| CBV | containment building ventilation | |||||||||||||
| CC | centrifugal charging | coarse control | component check | component cooling | ||||||||||
| CCAS | containment cooling actuation signal | |||||||||||||
| CCB | change control board | chemical cleaning building | ||||||||||||
| CCCS | core components cleaning system | core components conditioning station | core components conditioning system | |||||||||||
| CCD | coarse control damper | counter-current digestion | ||||||||||||
| CCDF | complementary cumulative distribution function | |||||||||||||
| CCDP | conditional core damage probability | |||||||||||||
| CCF | common-cause failure | |||||||||||||
| CCFA | common-cause failure analysis/analyses | |||||||||||||
| CCFL | counter-current flow limitation | |||||||||||||
| CCFP | conditional containment failure probability | |||||||||||||
| CCGC | containment combustible gas control | |||||||||||||
| CCHEN | Comisión Chilena de Energía Nuclear (Chile) | |||||||||||||
| CCI | core concrete interaction | |||||||||||||
| CCM | SulzerCompagnie de Construction Mécanique Sulzer (France) | |||||||||||||
| CCN | contract change notice | |||||||||||||
| CCNB | Concerned Citizens for the Nuclear Breeder | |||||||||||||
| CCNPP | Calvert Cliffs Nuclear Power Plant | |||||||||||||
| CCP | centrifugal charging pump | chemical control procedure | core component pot | |||||||||||
| CCRC | core component receiving container | |||||||||||||
| CCRS | computerized cable routing system | |||||||||||||
| CCS | Carroll County Station | commitment control system | component cooling system | condensate cleanup system | condensate cooling system | containment cooling system | ||||||||
| CCSS | centrifugally cast stainless steel | |||||||||||||
| CCSW | component cooling service water | |||||||||||||
| CCTF | cylindrical core test facility | |||||||||||||
| CCTL | core component test loop | |||||||||||||
| CCTV | closed-circuit television | |||||||||||||
| CCU | containment cooling unit | |||||||||||||
| CCW | closed cooling water | component cooling water | compound cooling water | condenser circulating water | condenser cooling water | counterclockwise | ||||||||
| CCWS | closed cooling water system | component cooling water system | ||||||||||||
| CD | civil defense | |||||||||||||
| C/D | cooldown | |||||||||||||
| CDA | containment depressurization actuation | core disruptive accident | ||||||||||||
| CDBA | containment design-basis accident | |||||||||||||
| CDC | Center for Disease Control | computer design code | Control Data Corp. | |||||||||||
| CDE | condensate demineralization effluent | |||||||||||||
| CDF | core damage frequency | cumulative damage function | ||||||||||||
| CDM | central data management | |||||||||||||
| CDN | corporate data network | |||||||||||||
| CDP | cask decontamination pit | |||||||||||||
| CDPA | Civil Defense Preparedness Agency | |||||||||||||
| CDPr | core damage probability | |||||||||||||
| CDR | conceptual design requirement | |||||||||||||
| CDRG | Catastrophic Disaster Response Group | |||||||||||||
| CD-ROM | compact disk/read-only memory | |||||||||||||
| CDS | cask decontamination station | component disassembly station | computer data screening | conceptual design study | condensate demineralization subsystem | current disposal site | ||||||||
| CDV | capacitance discharge vaporization | |||||||||||||
| CE | Combustion Engineering, Inc. | Commonwealth Edison Co. | conductivity element | Consumer Electronics | Corps of Engineers, U.S. Army | |||||||||
| C/E | calculation/experiment | |||||||||||||
| C-E | Combustion Engineering, Inc. | |||||||||||||
| CEA | Cambridge Electron Accelerator | Chesapeake Energy Alliance | Commissariat à l’Energie Atomique (France) | control element assembly | Council of Economic Advisors | |||||||||
| CEAC | control element assembly calculator | |||||||||||||
| CEADS | control element assembly drive system | |||||||||||||
| CEAN | Centre d’Etudes pour les Applications de l’Energie Nucléaire (Belgium) | |||||||||||||
| CEBELCOR | Centre Belge d’Etude de la Corrosion (Belgium) | |||||||||||||
| CEC | Citizens Energy Council | Claiborne Enrichment Center | Commission of the European Communities | |||||||||||
| CECO | Commonwealth Edison Co. | cost estimate change order | ||||||||||||
| CECS | containment environmental control system | |||||||||||||
| CEDE | committed effective dose equivalent | |||||||||||||
| CEDM | control element drive mechanism | |||||||||||||
| CEDMCS | control element drive mechanism control system | |||||||||||||
| CEDS | control element drive system | |||||||||||||
| CEEA | Comisión Ecuatoriana de Energia Atómica (Ecuador) | Communauté Européenne de l’Energie Atomique | ||||||||||||
| CEEN | Centre d’Etude de l’Energie Nucléaire (Belgium) | |||||||||||||
| CEER | Center for Energy and Environment Research (Puerto Rico) | |||||||||||||
| CEFILAC | Compagnie du Filage des Métaux et des Joint Curty (France) | |||||||||||||
| CEG | Contractor Engineering Group | |||||||||||||
| CEGB | Central Electricity Generating Board (United Kingdom) | |||||||||||||
| CEHA | contact equipment handling area | |||||||||||||
| CEIC | Cleveland Electric Illuminating Co. | |||||||||||||
| CEICO | Cleveland Electric Illuminating Co. | |||||||||||||
| CEL | carbon equilibrium loop | coating exempt log | ||||||||||||
| CEM | Compagnie Electro-Mécanique (France) | |||||||||||||
| CEN | Centre d’Etudes Nucléaires (France) | Centre d’Etude de l’Energie Nucléaire (Belgium) | ||||||||||||
| CENC | Centre d’Etudes Nucléaires de Cadarache (France) | |||||||||||||
| CENFAR | Centre d’Etudes Nucléaires de Fontenay-aux-Roses (France) | |||||||||||||
| CENG | Centre d’Etudes Nucléaires de Grenoble (France) | |||||||||||||
| CENS | Centre d’Etudes Nucléaires de Saclay (France) | |||||||||||||
| CENUSA | Centrales Nucleares, S.A. (Spain) | |||||||||||||
| CENY | Consolidated Edison Co. of New York | |||||||||||||
| CEOG | Combustion Engineering Owners Group | |||||||||||||
| CEPC | Central Electric Power Cooperative, Inc. | |||||||||||||
| CEQ | Council on Environmental Quality | |||||||||||||
| CER | complete engineering release | condition evaluation report | critical experiment reactor | |||||||||||
| CERC | Coastal Engineering Research Center, U.S. Army | |||||||||||||
| CERCA | Centre de Recherches pour Combustibles Atomiques (France) | Compagnie pour l’Etude et la Réalisation de Combustibles Atomiques (France) | ||||||||||||
| CERCLA | Comprehensive Environmental Response, Compensation, and Liability Act | |||||||||||||
| CERES | Coalition for Environmentally Responsible Economies | |||||||||||||
| CERL | Construction Engineering Research Laboratory | |||||||||||||
| CERMET | ceramic and metal (fuel) | |||||||||||||
| CERT | candidate evaluation, certification, and selection record | constant extension rate test(ing) | Council of Energy Resources Tribes | |||||||||||
| CES | critical experiment station | |||||||||||||
| CESNEF | Centro di Studi Nucleari Enrico Fermi (Italy) | |||||||||||||
| CESR | colliding electron-beam storage ring | |||||||||||||
| CESSAR | Combustion Engineering Standard Safety Analysis Report | |||||||||||||
| CET | containment event tree | core exit thermocouple | critical experiment tank | |||||||||||
| CETR | Consolidated Edison Thorium Reactor | |||||||||||||
| CETS | control element test stand | |||||||||||||
| CEVAR | consumable-electrode vacuum-arc remelt | |||||||||||||
| CF | column feed | confinement factor | continuous flow | core flooding | correction factor | |||||||||
| CFAR | component failure analysis report | |||||||||||||
| CFB | C.F. Braun and Co. | |||||||||||||
| CFC | Constructions Férroviaires du Centre, S.A. (Belgium) | |||||||||||||
| CFCCS | condensate and feedwater chemistry control system | |||||||||||||
| CFCU | containment fan cooler unit | |||||||||||||
| CFD | cell floor drain | |||||||||||||
| CFDT | Confédération Française Démocratique du Travail (France) | |||||||||||||
| CFE | clandestine fission explosive | Comisión Federal de Electricidad (Mexico) | ||||||||||||
| CFFTR | Canadian Fusion Fuel Technology Project | |||||||||||||
| CFI | core flooding interlock | |||||||||||||
| CFM | containment failure mode | |||||||||||||
| CFO | Chief Financial Officer | |||||||||||||
| CFR | Code of Federal Regulations | |||||||||||||
| CFR | commercial fast reactor | condensate filter demineralizer | ||||||||||||
| CFRE | circulating-fuel reactor experiment | |||||||||||||
| CFRMF | coupled fast reactor measurement facility | |||||||||||||
| CFS | cavity fission source | condensate and feedwater system | core flood system | core former structure | ||||||||||
| CFT | core flood tank | core flooding tank | ||||||||||||
| CFTC | cooler flusher tank cell | |||||||||||||
| CFTE | cooler flusher tank equipment | |||||||||||||
| CFTL | component flow test loop | |||||||||||||
| CFU | cumulative fatigue usage | |||||||||||||
| CFUR | Citizens for Fair Utility Regulation | |||||||||||||
| CFW | condensate and feedwater | |||||||||||||
| CFWS | condensate and feedwater system | |||||||||||||
| CGCS | combustion gas control system | |||||||||||||
| CGE | Canadian General Electric | |||||||||||||
| CGEC | Cincinnati Gas and Electric Co. | |||||||||||||
| CGEL | cover gas evaluation loop | |||||||||||||
| CGI | commercial-grade item | |||||||||||||
| CGMS | cover gas monitoring subsystem | |||||||||||||
| cGy | centigray | |||||||||||||
| CHAP | composite HTGR (high-temperature gas reactor) analysis program | |||||||||||||
| CHAT | CLIRA (closed-loop in-reactor assembly) holddown assembly tool | |||||||||||||
| CHCF | component handling and cleaning facility | |||||||||||||
| CHEP | conditional human error probability | |||||||||||||
| CHF | critical heat flux | |||||||||||||
| CHFR | critical heat flux ratio | |||||||||||||
| CHGE | Central Hudson Gas and Electric Corp. | |||||||||||||
| CHLA | candidate high-level action | |||||||||||||
| CHLW | commercial high-level waste | |||||||||||||
| CHMT | components, hybrids, and manufacturing technology | |||||||||||||
| CHN | construction hold notice | |||||||||||||
| CHP | certified health physicist | |||||||||||||
| C&HP | chemistry and health physics | |||||||||||||
| CHR | cooling water/hot water return | |||||||||||||
| CHRS | containment heat removal system | |||||||||||||
| CHU | centigrade heat unit | |||||||||||||
| CHWR | cooling water/hot water return | |||||||||||||
| C/HWR | cooling water/hot water return | |||||||||||||
| C-HWR | cooling water/hot water return | |||||||||||||
| CI | center island | chemical injection | containment integrity | containment isolation | ||||||||||
| C&I | control and instrumentation | |||||||||||||
| Ci | curie | |||||||||||||
| CIA | Central Intelligence Agency | containment isolation A | ||||||||||||
| CIAS | containment isolation actuation signal | |||||||||||||
| CIB | containment isolation B | |||||||||||||
| CIC | carrier identification code | |||||||||||||
| CICA | Competition in Contracting Act | |||||||||||||
| CICAF | Compagnie Industrielle des Combustibles Atomiques Frittes (France) | |||||||||||||
| CID | component identification | |||||||||||||
| CIEMAT | Centro de Investigaciones Energeticas, Medio Ambientales (Spain) | |||||||||||||
| CIIP | condenser inservice inspection program | |||||||||||||
| CILRT | containment integrated leak rate test | |||||||||||||
| CIMI | Compagnia Italiana Montaggi Industriali, SpA (Italy) | |||||||||||||
| CINDA | computer index of neutron data | |||||||||||||
| CIO | Chief Information Officer | |||||||||||||
| CIP | containment improvement program | |||||||||||||
| C/IP | construction/inspection procedure | |||||||||||||
| CIPC | Central Iowa Power Cooperative | |||||||||||||
| CIPP | customized inspection program pilot | customized inspection program process | customized inspection planning process (now IPAP) | |||||||||||
| CIR | Canada-India Reactor (India) | |||||||||||||
| CIREA | Commission Interministérielle des Radioéléments Artificiels (France) | |||||||||||||
| CIRGA | Critical Isotope Reactor, General Atomic Co. | |||||||||||||
| CIRRPC | Committee on Interagency Radiation Research and Policy Coordination | |||||||||||||
| CIRS | containment iodine removal system | |||||||||||||
| CIS | chemical injection system | containment isolation signal | containment isolation system | contract information sheet | ||||||||||
| CISDEN | Centro Italiano di Studi di Diritto dell’Energia Nucleare (Italy) | |||||||||||||
| CISE | Centro Informazioni Studi Esperienze, SpA (Italy) | |||||||||||||
| CISF | centralized interim storage facility | |||||||||||||
| CISIP | condenser inservice inspection program | |||||||||||||
| CISSCO | Comprehensive Information Systems Support Consolidation | |||||||||||||
| CIT | conductivity indicator transmitter | corporate investigation team | critical incident technique | |||||||||||
| CIV | center island vessel | combined intercept valve | combined intermediate valve | containment isolation valve | ||||||||||
| CIWA | condition identification work authorization | |||||||||||||
| CL | closed loop | containment leakage | ||||||||||||
| CLA | cold-leg accumulator | |||||||||||||
| CLAA | Centre Lyonnais d’Applications Atomiques (France) | |||||||||||||
| CLB | current licensing basis | |||||||||||||
| CLC | closed-loop condensate | |||||||||||||
| CLCGM | closed-loop cover gas monitor | |||||||||||||
| CLCIS | closed-loop control and instrumentation system | |||||||||||||
| CLCS | consequence limiting control system | |||||||||||||
| CLCV | cold-leg check valve | |||||||||||||
| CLCW | closed-loop cooling water | |||||||||||||
| CLEI | Cleveland Electric Illuminating Co. | |||||||||||||
| CLEM | closed-loop ex-vessel machine | |||||||||||||
| CLEMT | closed-loop ex-vessel machine transporter | |||||||||||||
| CLIRA | closed-loop in-reactor assembly | |||||||||||||
| CLIV | cold-leg isolation valve | |||||||||||||
| CLJA | closed-loop jumper assembly | |||||||||||||
| CLLRW | commercial low-level radioactive waste | |||||||||||||
| CLOF | complete loss of feedwater | |||||||||||||
| CLOFA | complete loss-of-fluid accident | |||||||||||||
| CLOHS | complex loss-of-heat sink | |||||||||||||
| CLP | Connecticut Light and Power Co. | |||||||||||||
| CLR | core lateral restraint | |||||||||||||
| CLRWS | clean liquid radioactive waste system | |||||||||||||
| CLS | cask loading station | closed-loop system | consequence limiting system | |||||||||||
| CLSD | Central Laboratories Services Dept. (TVA) | |||||||||||||
| CLSMDA | closed-loop-system meltdown accident | |||||||||||||
| CLWR | commercial light-water reactor | |||||||||||||
| CM | coarse mixing | condition monitoring | configuration management | coolant mixing | core melt | corrective maintenance | ||||||||
| CMA | classified mail address | |||||||||||||
| CMAA | Crane Manufacturers Association of America | |||||||||||||
| CMC | component modification card | core monitoring computer | ||||||||||||
| CMCI | core-melt/coolant interaction | |||||||||||||
| CMEA | Council for Mutual Economic Assistance (U.S.S.R.) | |||||||||||||
| CMEP | Critical Mass Energy Project | |||||||||||||
| CMF | central maintenance facility | common-mode failure | core-melt frequency | |||||||||||
| CMFA | common-mode failure analysis/analyses | |||||||||||||
| CMFLPD | core maximum fraction of limiting power density | |||||||||||||
| CMI | care and maintenance instruction | |||||||||||||
| CML | Critical Mass Laboratory | |||||||||||||
| CMM | core mechanical mockup | |||||||||||||
| CMMF | component maintenance and mockup facility | |||||||||||||
| CMOD | crack mouth opening displacement | |||||||||||||
| CMP | CLEM (closed-loop ex-vessel machine) maintenance pit | coastal management program | condition monitoring program | configuration management plan | controlled materials production | |||||||||
| CMPC | Central Maine Power Co. | |||||||||||||
| CMRG | Core Melt Review Group | |||||||||||||
| CMT | core makeup tank | |||||||||||||
| CMTR | certified material test report | certified mill test report | ||||||||||||
| CNA | Canadian Nuclear Association | Centrale Nucléaire des Ardennes (Belgium) | ||||||||||||
| CNB | Centrale Nucléaire Belge (Belgium) | |||||||||||||
| CNC | condensation nuclei counter | |||||||||||||
| CNEA | Comisión Nacional de Energía Atómica (Argentina) | |||||||||||||
| CNEN | Comisión Nacional de Energía Nuclear (Mexico) | Comissão Nacional de Energía Nuclear (Brazil) | Comitato Nazionale per l’Energia Nucleare (Italy) | Conseil National de l’Energie Nucléaire (Luxembourg) | ||||||||||
| CNET | Center for Nuclear Engineering and Technology | |||||||||||||
| CNEUPEN | Commission Nationale pour l’Etude de l’Utilisation Pacifique de l’Energie Nucléaire (Belgium) | |||||||||||||
| CNFP | commercial nuclear fuel plant | |||||||||||||
| CNI | Consolidated National Intervenors | |||||||||||||
| CNN | Cable Network News | |||||||||||||
| CNNA | China National Nuclear Corporation | |||||||||||||
| CNO | Chief Nuclear Officer | |||||||||||||
| CNPP | corporate nuclear performance plan | |||||||||||||
| CNR | Committee for Nuclear Responsibility | |||||||||||||
| CNRA | Committee on Nuclear Regulatory Activities (of the OECD-NEA) | |||||||||||||
| CNRAG | corporate nuclear review and audit group | company nuclear review and audit group | ||||||||||||
| CNRM | Centre National de Recherches Métallurgiques (Belgium) | |||||||||||||
| CNRN | Comitato Nazionale per le Ricerche Nucleare (Italy) | |||||||||||||
| CNRS | Centre National de la Recherche Scientifique (France) | |||||||||||||
| CNS | Catawba Nuclear Station | Cherokee Nuclear Station | Cooper Nuclear Station | corporate nuclear safety | ||||||||||
| CNSI | Chem-Nuclear Systems, Inc. | |||||||||||||
| CNSNS | Comisión Nacional de Seguridad Nuclear y Salvaguardias (Mexico) | |||||||||||||
| CNSR | combination neutron source rod | |||||||||||||
| CNWRA | Center for Nuclear Waste Regulatory Analyses | |||||||||||||
| CO | change order | check open | chief operator | confirmatory order | contracting officer | |||||||||
| COB | close of business | |||||||||||||
| COBOL | common business-oriented language | |||||||||||||
| COBRA | Consolidated Omnibus Budget Reconciliation Act | coolant boiling and in-rod array | ||||||||||||
| COC | certificate of compliance | certificate of conformance | Cleveland open cup (method) | |||||||||||
| COCA | consent order and compliance agreement | |||||||||||||
| COCORP | Consortium of Continental Reflection Profiling | |||||||||||||
| COD | chemical oxygen demand | crack opening displacement | ||||||||||||
| COE | Corps of Engineers, U.S. Army | |||||||||||||
| COFINATOME | Compagnie de Financement de l’Industrie Atomique (France) | |||||||||||||
| COG | cell off-gas | condenser off-gas | continuity of government | |||||||||||
| COGAP | combustion gas analyzer program | |||||||||||||
| COI | conflict of interest | |||||||||||||
| COL | combined operating license | construction/operating license | ||||||||||||
| COLR | core operating limit report | |||||||||||||
| COLSS | core operating limit supervisory system | core operating limit support system | ||||||||||||
| COM | communications | computer output on microfiche | computer output on microfilm | |||||||||||
| COMET | computer-operated management evaluation technique | |||||||||||||
| COMRADEX | containment and meteorology for radiation exposure | |||||||||||||
| COMSEC | communications security | |||||||||||||
| CONAGT | Committee on Nuclear Air and Gas Treatment (ASME) | |||||||||||||
| CONS | Consolidation, Office of (NRC) | |||||||||||||
| COOP | continuity of operations plan | |||||||||||||
| COPPS | committee on power plant siting | |||||||||||||
| COPS | containment overpressure protection systems | |||||||||||||
| CORAPRO | Contrôle-Radioprotection (Belgium) | |||||||||||||
| CORAR | Council on Radionuclides and Radiopharmaceuticals | |||||||||||||
| COREN | Combustibili per Reattori Nucleari, SpA (Italy) | |||||||||||||
| CORS | catalytic oxygen removal system | |||||||||||||
| COS | change of station | |||||||||||||
| COTS | commercial off-the-shelf | |||||||||||||
| COV | center of vortex | |||||||||||||
| CP | Callaway Plant | change proposal | charging pump | Chicago Pile | civil penalty | cold pipe | column product | Comanche Peak | Commission paper | construction permit | construction procedure | containment purge | coolant pump | critical power |
| C/P | current/pneumatic | |||||||||||||
| CP-5 | Chicago Pile #5 | |||||||||||||
| CPA | Cooperative Power Association | |||||||||||||
| CPC | Consumers Power Co. | contact process cell | controlled-potential coulometer | core protection calculator | core protection computer | |||||||||
| CPCo | Consumers Power Company | |||||||||||||
| CPCSF | construction permit containment support fixture | |||||||||||||
| CPD | condensate pump discharge | |||||||||||||
| CPDD | conceptual project design description | |||||||||||||
| CPDO | containment performance design objective | |||||||||||||
| CPDS | condensate polishing demineralizer system | |||||||||||||
| CPE | contractor performance evaluation | |||||||||||||
| CPER | construction permit environmental report | |||||||||||||
| CPFF | cost plus fixed fee | |||||||||||||
| CPI | center pressure index | containment performance improvement | ||||||||||||
| CPIC | Capital Planning and Investment Control | |||||||||||||
| CPIS | containment purge isolation signal | |||||||||||||
| CP&L | Carolina Power & Light Co. | |||||||||||||
| cpm | count per minute | |||||||||||||
| CPM | critical path method | |||||||||||||
| CPP | Center for Plutonium Production | coil power programmer | containment pre-entry purge | containment protection professional | ||||||||||
| CPPMU | containment pre-entry purge makeup | |||||||||||||
| CPPR | construction permit for a power reactor | |||||||||||||
| CPR | critical power ratio | |||||||||||||
| CPRR | construction permit for a research reactor | |||||||||||||
| CPRRG | Comanche Peak Report Review Group | |||||||||||||
| CPRT | Comanche Peak Response Team | |||||||||||||
| CPRW | condensate polishing regeneration waste | |||||||||||||
| CPRWCT | condensate polishing regeneration waste collection tank | |||||||||||||
| CPS | canister positioning system | cathodic protection system | Clinton Power Station | condensate polishing system | containment purge system | conversion program system | core and plant system | |||||||
| cps | count per second | |||||||||||||
| CPSC | Consumer Products Safety Commission | |||||||||||||
| CPSCI | central personnel security clearance index | |||||||||||||
| CPSES | Comanche Peak Steam Electrical Station | |||||||||||||
| CPU | central processing unit | |||||||||||||
| CPVC | chlorinated polyvinyl chloride | |||||||||||||
| CPWF | cementitious pelletized waste form | |||||||||||||
| CQ | Congressional Quarterly | |||||||||||||
| CQAA | corporate quality assurance audit | |||||||||||||
| CQE | cognizant quality engineer | critical quality element | ||||||||||||
| CR | Chicago Reactor | civil rights | condition report | conditional release | containment rupture | contractor report | control rod | control room | ||||||
| CR | Congressional Record | |||||||||||||
| CRA | control rod assembly | |||||||||||||
| CRAC | calculation of reactor accident consequences | consequences of reactor accident code | ||||||||||||
| CRACS | control room air conditioning system | |||||||||||||
| CRATS | control room air temperature system | |||||||||||||
| CRAVS | control room area ventilation system | |||||||||||||
| CRB | control rod blade | cost review board | ||||||||||||
| CRBR | Clinch River Breeder Reactor | controlled-recirculation boiling-water reactor | ||||||||||||
| CRBRP | Clinch River Breeder Reactor Plant | Clinch River Breeder Reactor Project | ||||||||||||
| CRC | critical reactor component | |||||||||||||
| CRCPD | Conference of Radiation Control Program Directors | |||||||||||||
| CRCTA | composite reactor components test activity | |||||||||||||
| CRD | control rod drive | control rod driveline | ||||||||||||
| CRDA | control rod drop accident | |||||||||||||
| CRDCS | control rod drive control system | |||||||||||||
| CRDD | control rod disconnect driveline | |||||||||||||
| CRDHS | control rod drive hydraulic system | |||||||||||||
| CRDM | control rod drive mechanism | |||||||||||||
| CRDMS | control rod drive mechanism shroud | |||||||||||||
| CRDR/A | control room design review/audit | |||||||||||||
| CRDS | control rod drive system | |||||||||||||
| CRDVF | control rod drive ventilating fan | |||||||||||||
| CREATE | collective radiation exposure (NRC performance indicator) | control room envelope | controlled residual element | |||||||||||
| CREACS | control room emergency air cleanup system | |||||||||||||
| CREATCS | control room emergency air temperature control system | |||||||||||||
| CREDO | centralized reliability data organization | |||||||||||||
| CREFAS | control room emergency fresh air system | |||||||||||||
| CREFS | control room emergency filtration system | |||||||||||||
| CREHVACS | control room emergency heating, ventilation, and air conditioning system | |||||||||||||
| CREST | Committee on Reactor Safety and Technology | |||||||||||||
| CREV | control room emergency ventilation | |||||||||||||
| CREVS | control room emergency ventilation system | |||||||||||||
| CRF | capacity reduction factor | correspondence routing form | ||||||||||||
| CRFAS | control room fresh air system | |||||||||||||
| CRG | Center Review Group | |||||||||||||
| CRGR | Committee To Review Generic Requirements (NRC) | |||||||||||||
| CRGT | control rod guide tube | |||||||||||||
| CRI | Centre de Recherches et d’Irradiations (France) | control room indicator | control room isolation | criterion-referenced instruction | ||||||||||
| CRIS | control room isolation signal | |||||||||||||
| CRM | Centre de Recherches Métallurgiques (Belgium) | Centrum voor Research in de Metallurgie (Belgium) | certified reference material | chemical remnant magnetization | core restraint mechanism | count rate meter | ||||||||
| CRNGP | Crystal River Nuclear Generating Plant | |||||||||||||
| CRNL | Chalk River Nuclear Laboratories | |||||||||||||
| CRO | control room operator | |||||||||||||
| CRPI | control rod position indication | |||||||||||||
| CRS | conductivity recording switch | Congressional Research Service | containment recirculation spray | |||||||||||
| CRSS | containment recirculation spray system | |||||||||||||
| CRT | cathode-ray tube | collet retaining tube | ||||||||||||
| CRTF | core restraint test facility | |||||||||||||
| CRU | combined rotating unit | |||||||||||||
| CRUD | Chalk River unidentified deposit | |||||||||||||
| CRVICS | containment and reactor vessel isolation control system | |||||||||||||
| CRW | clean radwaste | |||||||||||||
| CRWSS | condensate and refueling water storage system | |||||||||||||
| CS | carbon steel | communications system | component support | containment safety | containment spray | contract specialist | control system | core spray | current status | |||||
| CSA | chemical storage area | core special assembly | core structure accident | |||||||||||
| CSAS | containment spray actuating signal | containment spray actuating system | containment spray actuation signal | |||||||||||
| CSAU | code, scaling, applicability, and uncertainty (methodology) | |||||||||||||
| CSB | core support barrel | |||||||||||||
| CSC | Computer Sciences Corporation | containment spray cooling | core support cylinder | |||||||||||
| CSCC | caustic stress-corrosion cracking | |||||||||||||
| CSCS | core standby cooling system | |||||||||||||
| CSD | cold shutdown | constant speed drive | ||||||||||||
| CSDD | conceptual system design description | |||||||||||||
| CSDF | core segment development facility | |||||||||||||
| CSE | components and structures engineering | containment steam explosion | containment systems experiment | |||||||||||
| CSF | central service facility | condensate storage facility | containment support fixture | Coulter Steel and Forge | critical safety factor | critical safety function | ||||||||
| CSHX | containment spray heat exchange | |||||||||||||
| CSIP | containment safety initiatives program | |||||||||||||
| CSIS | containment spray injection system | |||||||||||||
| CSN | Consejo de Seguridad Nuclear (Spain) | |||||||||||||
| CSNE | Citizens for Safe Nuclear Energy | |||||||||||||
| CSNI | Committee on the Safety of Nuclear Installations (NEA) | |||||||||||||
| CSOEC | Columbus and Southern Ohio Electric Co. | |||||||||||||
| CSP | Coalition for Safe Power | conditional success probability | containment spray pump | core spray pump | ||||||||||
| CSPT | core support performance test | |||||||||||||
| CSR | cable spreading room | |||||||||||||
| CSRS | containment spray recirculation system | |||||||||||||
| CSS | cask support structure | cast stainless steel | condensate storage system | containment spray system | core spray system | core support structure | ||||||||
| CST | condensate storage tank | |||||||||||||
| CSTB | condensate storage tank building | |||||||||||||
| CSTR | continuously stirred tank reactor | |||||||||||||
| CSTS | condensate storage and transfer system | construction and startup/turnover surveillance group | ||||||||||||
| cSv | centisievert | |||||||||||||
| CSWS | Central and Southwest Services, Inc. | |||||||||||||
| CT | cable test | CLEM (closed-loop ex-vessel machine) transporter | compact tension | computerized tomography | cooling tower | current transformer | ||||||||
| CTBT | Comprehensive (Nuclear) Test Ban Treaty | |||||||||||||
| CTD | charged tape detection | |||||||||||||
| CTF | cask tilting fixture | |||||||||||||
| CTG | combustion turbine generator | |||||||||||||
| C/Th | carbon-to-thorium atomic ratio | |||||||||||||
| CTI | Cooling Tower Institute | |||||||||||||
| CTL | Canatom Ltd. (Canada) | |||||||||||||
| CTM | cable transfer machine | collimation test module | ||||||||||||
| CTOS | cassette operations system | |||||||||||||
| CTP | construction test procedure | controlled temperature profile | ||||||||||||
| CTR | certified test result | controlled thermonuclear reactor | ||||||||||||
| CTRM | control room | |||||||||||||
| CTS | concentrate transfer system | condensate transfer and storage | current technical specification | |||||||||||
| CTT | cask transfer tunnel | |||||||||||||
| CTTP | cask transport and testing program | |||||||||||||
| CTVC | cable tray vertical chase | |||||||||||||
| C/U | carbon-to-uranium atomic ratio | |||||||||||||
| CUB | Citizen’s Utility Board | |||||||||||||
| CUC | cask unloading cell | |||||||||||||
| CUF | cumulative usage factor | |||||||||||||
| CUP | cask unloading pool | |||||||||||||
| CURE | Citizens United for Responsible Energy | |||||||||||||
| CUSP | City Utilities of Springfield | |||||||||||||
| CUWS | cask unloading warm shop | |||||||||||||
| CV | check valve | containment vessel | control valve | |||||||||||
| CVA | consecutive-valve actuation | |||||||||||||
| CVAS | controlled ventilation area system | |||||||||||||
| CVC | chemical and volume control | |||||||||||||
| CVCS | charging and volume control system | chemical and volume control system | ||||||||||||
| CVH | containment vent header | |||||||||||||
| CVI | certified vendor information | containment ventilation isolation | ||||||||||||
| CVIS | containment ventilation isolation signal | |||||||||||||
| CVL | continuous vent line | |||||||||||||
| CVN | Charpy V-notch | construction verification notification | ||||||||||||
| CVP | continuous vacuum priming | |||||||||||||
| CVPETS | condenser vacuum pump effluent treatment system | |||||||||||||
| CVPSC | Central Vermont Public Service Corp. | |||||||||||||
| CVPV | containment vacuum pump valve | |||||||||||||
| CVTR | Carolinas-Virginia Tube Reactor | |||||||||||||
| CW | case work | circulating water | cold worked | column waste | cooling water | |||||||||
| CWA | Clean Water Act | |||||||||||||
| CWB | chilled water building | |||||||||||||
| CWIP | construction work in progress | |||||||||||||
| CWO | capital work order | |||||||||||||
| CWP | contractor work plan | control withdrawal prohibit | ||||||||||||
| CWPC | calcined waste packaging cell | |||||||||||||
| CWPH | circulating water pump house | |||||||||||||
| CWR | cooling water return | |||||||||||||
| CWS | circulating water system | compressed work schedule | cooling water system | |||||||||||
| CX | column extractant | criticality experiment | ||||||||||||
| CY | calendar year | |||||||||||||
| CYAP | Connecticut Yankee Atomic Power Co. | |||||||||||||
| CYAPCO | Connecticut Yankee Atomic Power Co. | |||||||||||||
| DA | deaerator | dose assessment | ||||||||||||
| DAC | discretionary access control | distance amplitude correction | ||||||||||||
| DAE | Department of Atomic Energy (India) | |||||||||||||
| DAEC | Duane Arnold Energy Center | |||||||||||||
| DAF | dynamic amplification factor | |||||||||||||
| DANATOM | Danish Association for Industrial Development of Atomic Energy | |||||||||||||
| DAR | design assessment report | |||||||||||||
| DAS | data acquisition system | disturbance analysis system | ||||||||||||
| DASHO | Designated Agency Safety and Health Official | |||||||||||||
| DAT | disconnect actuating tool | |||||||||||||
| DatF | Deutsches Atomforum e.V. (Germany) | |||||||||||||
| DAVDS | data acquisition and visual display system | |||||||||||||
| DAW | dry active waste | |||||||||||||
| DAYP | Dairyland Power Cooperative | |||||||||||||
| DB | dry bulb | |||||||||||||
| DBA | design-basis accident | |||||||||||||
| DBD | design-basis document | design-basis documentation | ||||||||||||
| DBDA | design-basis depressurization accident | |||||||||||||
| DBE | design-basis earthquake | design-basis event | ||||||||||||
| DBF | design-basis fault | dominant bubble frequency | ||||||||||||
| DBFA | design-basis fuel assembly | |||||||||||||
| DBFB | deep-bed filter and blower | |||||||||||||
| DBFL | design-basis flooding level | |||||||||||||
| DBI | design-basis incident | |||||||||||||
| DBLOCA | design-basis loss-of-coolant accident | |||||||||||||
| DBMS | database management system | |||||||||||||
| DBNPS | Davis-Besse Nuclear Power Station | |||||||||||||
| DBOA | delayed breeder or alternative | |||||||||||||
| DBP | dibutyl phosphate | |||||||||||||
| DBPB | design-basis pipe break | |||||||||||||
| DBR | design-basis reconstitution | |||||||||||||
| DBT | design-basis tornado | |||||||||||||
| DBTT | ductile-to-brittle transition temperature | |||||||||||||
| DBVP | design baseline and verification program | |||||||||||||
| DC | data control | design contractor | document control | drain channel | ||||||||||
| dc | direct current | |||||||||||||
| DCA | design change and authorization | Dosimeter Corporation of America | drain channel A | |||||||||||
| DCAA | Defense Contract Audit Agency | |||||||||||||
| DCB | drain channel B | |||||||||||||
| DCC | damaged core coolability Daniels Construction Company degraded core coolability |
|||||||||||||
| DCCA | Data Computer Corporation of America | |||||||||||||
| DCD | design control document document control desk |
|||||||||||||
| DCF | dose conversion factor | |||||||||||||
| DCFO | Deputy Chief Financial Officer | |||||||||||||
| DCH | direct containment heating drain collection header |
|||||||||||||
| DCIP | design change improvement program | |||||||||||||
| DCIR | daily Cadweld inspection report | |||||||||||||
| DCM | Delaware Custom Material | |||||||||||||
| DCN | design change notice | document change notice | ||||||||||||
| DCNPP | Diablo Canyon Nuclear Power Plant | |||||||||||||
| DCP | design change package document control procedure Donald C. Cook Plant |
|||||||||||||
| DCPD | direct current potential drop | |||||||||||||
| DCR | defueling completion report design change request direct conversion reactor |
|||||||||||||
| DCRDR | detailed control room design review | |||||||||||||
| DCRN | dashpot cup retention nut | |||||||||||||
| DCS | document control system | |||||||||||||
| DCSP | dry cask storage project | |||||||||||||
| DCSS | dry cask storage system | |||||||||||||
| DCT | differential current transformer | |||||||||||||
| DCV | directional control valve | |||||||||||||
| DCX | direct current experiment | |||||||||||||
| DD | deputy director Director’s Decision |
|||||||||||||
| D-D | deuterium-deuterium decontamination and decommissioning defueling and decommissioning |
|||||||||||||
| DDD | direct distance dialing | |||||||||||||
| DDH&DS | digital data handling and display system | |||||||||||||
| DDL | detergent and decontamination liquid [system] | |||||||||||||
| DDNB | delayed departure from nucleate boiling | |||||||||||||
| DDR | deficiency and disposition report | |||||||||||||
| DDS | digital data service | |||||||||||||
| DDT | deflagration to detonation | design data transmittal | ||||||||||||
| DDTT | drag disc-turbine transducer | |||||||||||||
| DE | diagnostic evaluation | Detroit Edison Co. | dose equivalent | double ended | ||||||||||
| DEA | driver evaluation assembly | Drug Enforcement Administration | ||||||||||||
| DEB | double-ended break | |||||||||||||
| DEC | Digital Equipment Corporation | |||||||||||||
| DECL | double-ended cold leg | |||||||||||||
| DECLG | double-ended cold-leg guillotine | |||||||||||||
| DECO | Detroit Edison Co. | |||||||||||||
| DECON | decontamination and dismantlement | |||||||||||||
| DEDE | Deputy Executive Director for Regulatory Effectiveness (NRC) | |||||||||||||
| DEDM | Deputy Executive Director for Management Services NRC | |||||||||||||
| DEDR | Deputy Executive Director for Regulatory Programs (NRC) | |||||||||||||
| DEFAS | diverse emergency feedwater actuation system | |||||||||||||
| DEG | double-ended guillotine | |||||||||||||
| DEGB | double-ended guillotine break | |||||||||||||
| DEH | digital electrohydraulic | |||||||||||||
| DEHL | double-ended hot leg | |||||||||||||
| DEHLG | double-ended hot-leg guillotine | |||||||||||||
| DEI | dielectric and electrical insulation | dose equivalent iodine | ||||||||||||
| DEIS | draft environmental impact statement | |||||||||||||
| DEMA | Diesel Engine Manufacturers Association | |||||||||||||
| DEP | design external pressure | diagnostic evaluation plan | diagnostic evaluation program (NRC) | |||||||||||
| DEPS | double-ended pump suction | |||||||||||||
| DEPSG | double-ended pump suction guillotine | |||||||||||||
| DER | Department of Environmental Research | Department of Environmental Resources | design electrical rating | Deviation Event Report | double-ended rupture | |||||||||
| DERE | Dounreay Experimental Reactor Establishment (Scotland) | |||||||||||||
| DERM | disassembly examination reassembly machine | |||||||||||||
| DES | data encryption standard | Department of Emergency Services | double-ended slot | draft environmental statement | ||||||||||
| DESL | double-ended suction leg | |||||||||||||
| DESLS | double-ended suction leg slot | |||||||||||||
| DET | decomposition event tree | diagnostic evaluation team | ||||||||||||
| DEW | Deutsche Edelstahlwerke, A.G. (Germany) | |||||||||||||
| DF | debris formation | decontamination factor | ||||||||||||
| D&F | determination and findings | |||||||||||||
| dF | dilution factor (also Fd) | |||||||||||||
| DF | dilution factor | dose factor | ||||||||||||
| Df | dose factor | |||||||||||||
| DFA | driver fuel assembly | dummy fuel assembly | ||||||||||||
| DFBN | debris-filter bottom nozzle | |||||||||||||
| DFC | design field change | |||||||||||||
| DFCS | digital feedwater control system | |||||||||||||
| DFFR | dynamic forcing function report | |||||||||||||
| DFI | demand for information | |||||||||||||
| DFO | designated Federal official | |||||||||||||
| DFOS | diesel fuel oil system | |||||||||||||
| DFP | decommissioning funding plan | diesel fire pump | ||||||||||||
| DFR | damaged fuel relocation | Dounreay Fast Reactor (Scotland) | ||||||||||||
| DFRP | downcomer flow resistance plate | |||||||||||||
| DFT | dry film thickness | |||||||||||||
| DG | diesel-engine generator | diesel generator | ||||||||||||
| D/G | diesel generator | |||||||||||||
| DGA | dummy guide assembly | |||||||||||||
| DGAS | diesel generator auxiliary system | |||||||||||||
| DGB | diesel generator building | |||||||||||||
| DGCAIES | diesel generator combustion air intake and exhaust system | |||||||||||||
| DGCWS | diesel generator cooling water system | |||||||||||||
| DGEA | draft generic environmental assessment | |||||||||||||
| DGFOSTS | diesel generator fuel oil storage and transfer system | |||||||||||||
| DGLS | diesel generator lubrication system | |||||||||||||
| DGSS | diesel generator starting system | |||||||||||||
| DGZ | desired ground zero | |||||||||||||
| DH | decay heat | |||||||||||||
| DHHS | Department of Health and Human Services | |||||||||||||
| DHI | department head instruction | |||||||||||||
| DHP | department head procedure | |||||||||||||
| DHR | decay heat removal | |||||||||||||
| DHRS | decay heat removal system | direct heat removal service | direct heat removal system | |||||||||||
| DHS | decontamination hot shop | |||||||||||||
| DHX | dump heat exchanger | |||||||||||||
| DHXCS | dump heat exchanger control system | |||||||||||||
| DID | defense in depth | |||||||||||||
| DIE | direct inspection effort | |||||||||||||
| DIMPLE | Deuterium Moderated Pile Low Energy Reactor | |||||||||||||
| DIP | design internal pressure | |||||||||||||
| DIPS | dynamic isotope power system | |||||||||||||
| DIV | drywell isolation valve | |||||||||||||
| DL | dead load | Duquesne Light Co. | ||||||||||||
| DLAT | discharge-line air temperature | |||||||||||||
| DLF | dynamic load factor | |||||||||||||
| DLL | discharge-line length | |||||||||||||
| DLRWS | dirty liquid radioactive waste system | |||||||||||||
| DLV | discharge-line volume | |||||||||||||
| DLWL | discharge-line water-leg length | |||||||||||||
| DM | damage monitor | demineralized | ||||||||||||
| DMA | direct memory access | |||||||||||||
| DMPL | Delmarva Power and Light Co. | |||||||||||||
| DMS | data management subsystem | Defense Message Service | ||||||||||||
| DMT | dispersive mechanism test | |||||||||||||
| DMTR | Dounreay Materials Testing Reactor (Scotland) | |||||||||||||
| DMUX | distributed multiplex | |||||||||||||
| DMW | demineralized makeup water | |||||||||||||
| DN | delayed neutron | discrepancy notice | ||||||||||||
| DNA | Defense Nuclear Agency | deoxyribonucleic acid | does not apply | |||||||||||
| DNB | departure from nucleate boiling | |||||||||||||
| DNBR | departure from nucleate boiling ratio | |||||||||||||
| DNFSB | Defense Nuclear Facility Safety Board | |||||||||||||
| DNM | delayed neutron monitor | |||||||||||||
| DNMS | delayed neutron monitoring subsystem | |||||||||||||
| DNPS | Dresden Nuclear Power Station | |||||||||||||
| DNRC | Democritos Nuclear Research Center (Greece) | |||||||||||||
| DNS | domain name server | |||||||||||||
| DNT | dinitrotoluene | |||||||||||||
| DO | designated official | digital output | dissolved oxygen | duty officer | ||||||||||
| DOCUMENT | Department of Commerce | dissolver off-gas condensate | ||||||||||||
| DOD | Department of Defense | |||||||||||||
| DOE | Department of Energy | |||||||||||||
| DOG | dissolver off-gas | |||||||||||||
| DOI | Department of the Interior | |||||||||||||
| DOL | Department of Labor | |||||||||||||
| DOJ | Department of Justice | |||||||||||||
| DOP | detailed operating procedure | dioctyl phosphate | disaster operations plan | di-sec, octyl phthalate | ||||||||||
| DORF | Diamond Ordnance Radiation Facility | |||||||||||||
| DOS | degree of sensitization | Department of State | disk operating system | |||||||||||
| DOSAR | Dosimetry Applications Research Facility | |||||||||||||
| DOT | Department of Transportation | |||||||||||||
| DP | data processing | differential pressure | ||||||||||||
| D/P | differential pressure | |||||||||||||
| DPA | delegation of procurement authority | |||||||||||||
| DPC | Dairyland Power Cooperative | Duke Power Co. | ||||||||||||
| DPD | decontamination as precursor to decommissioning | |||||||||||||
| DPE | development project engineer | discipline project engineer | ||||||||||||
| DPIS | differential pressure indicating switch | |||||||||||||
| DPIV | drywell purge isolation valve | |||||||||||||
| DPLC | Dayton Power and Light Co. | |||||||||||||
| dpm | decade per minute | disintegrations per minute | ||||||||||||
| DPMM | dewpoint moisture monitor | |||||||||||||
| DPO | differing professional opinion | |||||||||||||
| DPP | drip pan pot | |||||||||||||
| DPR | developmental power reactor | demonstration power reactor | ||||||||||||
| DPRK | Democratic People’s Republic of Korea | |||||||||||||
| DPS | demand position system | |||||||||||||
| DPV | differing professional view | |||||||||||||
| DR | design review | designated representative | Danish Reactor | deficiency report | discrepancy report | |||||||||
| DRA | dropped rod accident | |||||||||||||
| DRC | dropped rod control | |||||||||||||
| D/RE | disassembly/reassembly equipment | |||||||||||||
| DRES | direct reading emission spectrograph | |||||||||||||
| DRF | dose reduction factor | |||||||||||||
| DRMW | demineralized reactor makeup water | |||||||||||||
| DRP | disaster recovery plan | discrete radioactive particle | ||||||||||||
| DRPI | digital rod position indication | digital rod position indicator | ||||||||||||
| DRPIS | digital rod position indication system | |||||||||||||
| DR/QR | design review/quality revalidation | |||||||||||||
| DRR | document release record | |||||||||||||
| DRS | development requirements specification | disassembly/reassembly station | ||||||||||||
| DRW | dirty radwaste | |||||||||||||
| DS | decontamination shop | design standard | ||||||||||||
| D/S | dynamic/static | |||||||||||||
| DSA | diagnostic self-assessment | |||||||||||||
| DSAR | defueled safety analysis report | |||||||||||||
| DSC | design safety criterion/criteria | dry shielded canister | dry storage canister | |||||||||||
| DSE | draft safety evaluation | |||||||||||||
| DSER | draft safety evaluation report | |||||||||||||
| DSI | direction-setting issue | |||||||||||||
| DSIR | Department of Scientific and Industrial Research (United Kingdom) | |||||||||||||
| DSL | drawing and specification listing | |||||||||||||
| DSM | defect-specific management | |||||||||||||
| DSO | designated senior official | director of site operations | ||||||||||||
| D-T | deuterium-tritium | |||||||||||||
| DTA | differential thermal analysis/analyses | |||||||||||||
| DTER | draft technical evaluation report | |||||||||||||
| DTI | diagnostic team inspection | |||||||||||||
| DTNSRDC | David Taylor Naval Ship Research and Development Center | |||||||||||||
| DTPA | diethylenetriamine pentaacetic acid | |||||||||||||
| DTR | document transmittal record | |||||||||||||
| DTRF | data transmittal and routing form | |||||||||||||
| DTRS | development test requirement specification | |||||||||||||
| DTS | differential temperature switch | |||||||||||||
| DTT | design thermal transient | design transition temperature | ||||||||||||
| DTV | direct torus vent | |||||||||||||
| DUEGG | dual-energy gamma group | |||||||||||||
| DUN | Douglas United Nuclear | |||||||||||||
| DUNC | deep underwater nuclear counting | |||||||||||||
| DuP-SR | E.I. DuPont de Nemours and Company–Savannah River | |||||||||||||
| DUTS | decision unit tracking system | |||||||||||||
| DVAL | degraded voltage analytical limits | |||||||||||||
| DVM | digital voltmeter | |||||||||||||
| DW | deadweight | demineralized water | drywell | |||||||||||
| DWCS | defueling water cleanup system | |||||||||||||
| DWEDS | drywell equipment drain sump | |||||||||||||
| DWFDS | drywell floor drain sump | |||||||||||||
| DWG | drawing | |||||||||||||
| DWICA | deep-water isotopic current analyzer | |||||||||||||
| DWK | Deutsche Gesellschaft für Wiederaufarbeitung von Kernbrennstoffen, m.b.H. (Germany) | |||||||||||||
| DWL | depressed water leg | drywell | ||||||||||||
| DWMS | demineralized water makeup system | |||||||||||||
| DWOC | Don’t Waste Oregon Council | |||||||||||||
| DWP | detailed work plan | |||||||||||||
| DWR | Department of Waste Resources | |||||||||||||
| DWS | demineralized water system | development work statement | ||||||||||||
| DWST | demineralized water storage tank | |||||||||||||
| DWT | drop weight test | |||||||||||||
| DYNAL | dynamic analysis/analyses | |||||||||||||
| EA | enforcement action | engineering assurance | environmental assessment | |||||||||||
| E/A | element and attribute | erratum/errata and addendum/addenda | ||||||||||||
| E&A | erratum/errata and addendum/addenda | |||||||||||||
| EAB | exclusion area boundary | |||||||||||||
| EAC | emergency assessment coordinator | |||||||||||||
| EACC | Environmental Assessment Command Center | |||||||||||||
| EACRP | European-American Committee on Reactor Physics | |||||||||||||
| EACT | emergency action and coordination team | |||||||||||||
| EAES | European Atomic Energy Society | |||||||||||||
| EAG | emergency action guidelines | |||||||||||||
| EAL | emergency action level | equipment air lock | ||||||||||||
| EAP | emergency action plan | Event Assessment Panel | experimental activity proposal | |||||||||||
| EAPS | essential auxiliary power system | |||||||||||||
| EAR | event analysis report | |||||||||||||
| EAS | essential auxiliary support | experiment assurance system | ||||||||||||
| EASE | elastic analysis for structural engineering | |||||||||||||
| EASI | estimate of adversary sequence interruption | |||||||||||||
| EAST | Eastern Utilities Associates | |||||||||||||
| EATL | energy-absorbing torque limiter | |||||||||||||
| EATS | Enforcement Action Tracking System | |||||||||||||
| EB | electron beam | |||||||||||||
| EBASCO | Electric Bond and Share Company | EBASCO Services Inc. | ||||||||||||
| EBOR | experimental beryllium oxide reactor | |||||||||||||
| EBR | experimental breeder reactor | |||||||||||||
| EBS | emergency barrier system | Emergency Broadcast System | ||||||||||||
| EBTF | ECC (emergency core cooling) bypass test facility | |||||||||||||
| EBWR | experimental boiling-water reactor | |||||||||||||
| EC | eddy current | emergency coordinator | enforcement coordinator | European Communities | event category | |||||||||
| ECA | energy-conversion area | engineering change authorization | ||||||||||||
| ECAR | East Central Area Reliability Coordination Agreement | |||||||||||||
| ECC | emergency control center | emergency core coolant | emergency core cooling | |||||||||||
| ECCS | emergency core cooling system | |||||||||||||
| ECCW | emergency core cooling water (system) | |||||||||||||
| ECD | electron capture device | |||||||||||||
| ECF | emergency cooling function | |||||||||||||
| ECFM | eddy current flowmeter | |||||||||||||
| ECI | emergency coolant injection | essential controls and instrumentation | ||||||||||||
| ECN | Energieonderzoek Centrum Nederland (Netherlands) | engineering change notice | ||||||||||||
| ECNG | East Central Nuclear Group, Inc. | |||||||||||||
| ECNP | Environmental Coalition on Nuclear Power | |||||||||||||
| ECP | emergency cooling pond | employee concerns program | engineering change proposal | estimated critical position | ||||||||||
| E&CQA | engineering and construction quality assurance | |||||||||||||
| ECR | emergency coolant recirculation | estimate change request | ||||||||||||
| ECS | emergency control station | environmental control shroud | environmental control system | |||||||||||
| ECSP | employee concerns special program | |||||||||||||
| ECST | emergency condensate storage tank | |||||||||||||
| ECT | eddy current test | emergency cooling tower | ||||||||||||
| ECTG | employee concerns task group | |||||||||||||
| ECTS | electronic custom telephone set | electronic custom telephone system | ||||||||||||
| ECU | environmental control unit | |||||||||||||
| ECW | emergency cooling water | essential chilled water | ||||||||||||
| ECWP | emergency cooling water pond | |||||||||||||
| ECWPH | emergency cooling water pump house | |||||||||||||
| ED | electron device | exhaust damper | ||||||||||||
| EDAX | energy dispersive x-ray analysis/analyses | |||||||||||||
| EDC | emergency decontamination center | |||||||||||||
| ED&C | electrical distribution and control | |||||||||||||
| EDCN | engineering drawing change notice | |||||||||||||
| EDCP | emergency design change package | |||||||||||||
| E&DCR | engineering and design coordination report | |||||||||||||
| EDECWS | emergency diesel engine cooling water system | |||||||||||||
| EDELS | emergency diesel engine lubrication system | |||||||||||||
| EDESS | emergency diesel engine starting system | |||||||||||||
| EdF | Electricité de France (France) | |||||||||||||
| EDG | emergency diesel generator | |||||||||||||
| ED/G | emergency diesel generator | |||||||||||||
| EDGCAIES | emergency diesel generator combustion air intake and exhaust system | |||||||||||||
| EDM | electric discharge machining | electrical disintegration machining | ||||||||||||
| EDN | engineering discrepancy notice | |||||||||||||
| EDO | Executive Director for Operations (NRC) | |||||||||||||
| EDP | electronic data processing | |||||||||||||
| EDRO | Executive Director of Regional Operations, Office of (U.S. Food and Drug Administration) | |||||||||||||
| EDS | electrical distribution system | experimental data system | explosives detection system | |||||||||||
| EDSFI | electrical distribution system functional inspection | |||||||||||||
| EDT | energy dissipation test | equipment drain tank | explosives detector team | |||||||||||
| EDTA | ethylenedinitrilo tetraacetic acid | |||||||||||||
| EDTS | equipment drain treatment system | |||||||||||||
| EEC | end-of-equilibrium cycle | European Economic Community | ||||||||||||
| EECW | emergency equipment cooling water | |||||||||||||
| EEI | Edison Electric Institute | |||||||||||||
| EEM | extrapolated endpoint method | |||||||||||||
| EEPVS | electrical equipment protection ventilation system | |||||||||||||
| EEQML | electrical equipment qualification master list | |||||||||||||
| EEQSP | environmental equipment qualification summary package | |||||||||||||
| EER | engineering evaluation request | |||||||||||||
| EERF | Eastern Environmental Radiation Facility | |||||||||||||
| EES | economizer-evaporator superheater | emergency exhaust system | ||||||||||||
| EESWS | emergency equipment service water system | |||||||||||||
| EFAPP | Enrico Fermi Atomic Power Plant | |||||||||||||
| EFAS | emergency feedwater actuation signal | emergency feedwater actuation system | ||||||||||||
| EFCO | Engineers and Fabricators Company | |||||||||||||
| EFCV | excess flow check valve | |||||||||||||
| EFD | engineering flow diagram | |||||||||||||
| EFDS | equipment and floor drainage system | |||||||||||||
| EFFBR | Enrico Fermi Fast Breeder Reactor | |||||||||||||
| EFI | Enrico Fermi Institute | |||||||||||||
| EFIC | emergency feedwater initiation and control | |||||||||||||
| EFM | expected flow measurement | |||||||||||||
| EFNS | Educational Foundation for Nuclear Science | |||||||||||||
| EFO | equipment forced outage (NRC performance indicator) | |||||||||||||
| EFOIA | Electronic Freedom of Information Act | |||||||||||||
| EFP | electric fire pump | Enrico Fermi Atomic Power Plant | ||||||||||||
| EFPD | effective full-power day | equivalent full-power day | ||||||||||||
| EFPH | effective full-power hour | |||||||||||||
| EFPM | effective full-power month | |||||||||||||
| EFPY | effective full-power year | |||||||||||||
| EFS | emergency feedwater system | |||||||||||||
| EFT | emergency filter treatment | emergency filter train | ||||||||||||
| EFW | emergency feedwater | |||||||||||||
| EFWS | emergency feedwater system | |||||||||||||
| EFWST | emergency feedwater storage tank | |||||||||||||
| EG | emergency generator | |||||||||||||
| EGCR | experimental gas-cooled reactor | |||||||||||||
| EGDN | ethylene glycol dinitrate | |||||||||||||
| EG&G | Edgerton, Germeshausen & Grier | |||||||||||||
| EGM | enforcement guide memorandum/memoranda | |||||||||||||
| EGTS | emergency gas treatment system | |||||||||||||
| EH | electrohydraulic | |||||||||||||
| EHC | electrohydraulic control | |||||||||||||
| EHNP | Edwin I. Hatch Nuclear Plant | |||||||||||||
| EHR | emergency heat removal | |||||||||||||
| EHV | extra high voltage | |||||||||||||
| EI | emergency injection | engineering instruction | ||||||||||||
| E&I | electrical and instrumentation | |||||||||||||
| EIA | Energy Information Administration | environmental impact appraisal | ||||||||||||
| EIAP | environmental impact assessment project | |||||||||||||
| EICC | emergency information and coordination center | |||||||||||||
| EIIS | energy industry identification system | |||||||||||||
| EIP | emergency implementation procedure | |||||||||||||
| EIR | Eidgenossisches Institute für Reaktorforschung (Switzerland) | engineering information request | equipment inoperable record | |||||||||||
| EIS | effluent inventory system | electrical and instrument shop | electrical isolation scheme | emergency injection system | environmental impact statement | environmental information system | ||||||||
| EJ | environmental justice | |||||||||||||
| EKG | effective kilogram | |||||||||||||
| EKMS | Electronic Key Management System | |||||||||||||
| EL | Elettronucleare Italiana (Italy) | |||||||||||||
| ELMS | electrical load monitoring system | |||||||||||||
| ELP | Employees Legal Project | |||||||||||||
| ELPHR | experimental low-temperature process heat reactor | |||||||||||||
| ELR | effectiveness limiting risk | |||||||||||||
| ELS | error-likely situation | |||||||||||||
| ELU | emergency lighting unit | |||||||||||||
| EM | electromagnetic | elevation model | engineering management | environmental management | evaluation model | |||||||||
| E/M | electromechanical | |||||||||||||
| E-MAD | engineering, maintenance, assembly, disassembly | |||||||||||||
| EMB | engineering in medicine and biology | |||||||||||||
| EMC | electromagnetic capability | electromagnetic compatibility | emergency management coordinator | engineering mockup critical experiment | ||||||||||
| EMI | electromagnetic interference | engineering and manufacturing instruction | ||||||||||||
| EMO | electric motor operated | |||||||||||||
| EMOV | electromagnetically operated valve | |||||||||||||
| EMP | electromagnetic pulse | |||||||||||||
| EMR | electromagnetic radiation | |||||||||||||
| EMRV | electromagnetic relief valve | |||||||||||||
| EMS | earthquake monitoring system | emergency management system | Emergency Medical Services | |||||||||||
| EMT | electrical metallic tubing | emergency management team | executive management team | |||||||||||
| EN | enforcement notification | event notification | ||||||||||||
| ENC | Exxon Nuclear Company, Inc. | |||||||||||||
| ENDESA | Empresa Nacional de Electricidad, S.A. (Chile) | |||||||||||||
| ENEA | European Nuclear Energy Association | |||||||||||||
| ENEL | Ente Nazionale per l’Energia Elettrica (Italy) | |||||||||||||
| ENERGOATOM | Nuclear Power Utility (Ukraine) | |||||||||||||
| ENI | Electro-Navale et Industrielle, S.A. (Belgium) | |||||||||||||
| ENO | extraordinary nuclear occurrence | |||||||||||||
| ENPI | Ente Nazionale Prevenzione Infortuni (Italy) | |||||||||||||
| ENRESA | Empresa Nacional de Residnos Radiativos (Spain) | |||||||||||||
| ENS | emergency notification system | European Nuclear Society | ||||||||||||
| ENSA | Equipos Nucleares (Spain) | |||||||||||||
| ENSI | Energia Nucleare Sud Italia (Italy) | |||||||||||||
| ENUSA | Empresa Nacional del Uranio, S.A. (Spain) | Energie Nucléaire, S.A. (Switzerland) | ||||||||||||
| EO | emergency officer | enforcement officer | equipment operator | |||||||||||
| E.O. | Executive Order | |||||||||||||
| EOC | emergency operations center | end of cycle | ||||||||||||
| EOCR | experimental organic-cooled reactor | |||||||||||||
| EOC-RPT | end-of-cycle recirculation pump trip | |||||||||||||
| EOD | explosives ordnance disposal | |||||||||||||
| EOEC | end-of-equilibrium cycle | |||||||||||||
| EOF | emergency operations facility | |||||||||||||
| EOI | emergency operating instruction | Entergy Operations, Inc. | ||||||||||||
| EOL | end of life | |||||||||||||
| EOP | emergency operating plan | emergency operating procedure | ||||||||||||
| EOS | equation of state | |||||||||||||
| EOY | end of year | |||||||||||||
| EP | electric power | emergency plan | emergency planning | emergency power | emergency preparedness | emergency procedure | equipment piece | |||||||
| E/P | electrical to pneumatic | |||||||||||||
| EPA | electrical penetration assembly | engineering plant analyzer | Environmental Protection Agency | |||||||||||
| EP Act | Energy Policy Act of 1992 | |||||||||||||
| EPB | emergency planning basis/bases | |||||||||||||
| EPBE | emergency-planning-basis event | |||||||||||||
| EPC | emergency preparedness coordinator | engineering planning coordinator | ||||||||||||
| EPDC | Electric Power Development Co. Ltd. (Japan) | |||||||||||||
| EPDM | ethylene propylene diene monomer | |||||||||||||
| EPE | emergency plan evolution | emergency preparedness evaluation | ||||||||||||
| EPEC | El Paso Electric Co. | |||||||||||||
| EPFE | electrical penetration filter and exhaust | |||||||||||||
| EPG | emergency procedure guideline | |||||||||||||
| EPI | Environmental Policy Institute | |||||||||||||
| EPIA | emergency preparedness implementation appraisal | |||||||||||||
| EPIP | emergency plan implementing procedure | |||||||||||||
| EPIX | Equipment Performance and Information and Exchange System (replaces NPRDS) (INPO) | |||||||||||||
| EPL | environmental protection limit | |||||||||||||
| EPM | electrical power monitoring | end path manual | engineering project manager | engineering procedure memorandum/memoranda | environmental project manager | |||||||||
| EPP | engineering program plan | environmental protection plan | ||||||||||||
| EPR | electromechanical potentiokinetic reactivation | emergency planning requirements | emergency planning review | enhanced participatory rulemaking | essential performance requirement | |||||||||
| EPRG | emergency planning review guideline | |||||||||||||
| EPRI | Electric Power Research Institute | |||||||||||||
| EPROM | electronic programmable read-only memory | |||||||||||||
| EPRTCS | emergency power ride-through capability system | |||||||||||||
| EPS | electric power system | emergency power system | ||||||||||||
| EPSL | emergency power switching logic | |||||||||||||
| EPSS | emergency power sequencing subsystem | |||||||||||||
| EPT | ethylene-propylene terpolymer | |||||||||||||
| EPZ | emergency planning zone | |||||||||||||
| EQ | environmental qualification | environmentally qualified | equipment qualification | |||||||||||
| EQC | equipment qualification coordinator | |||||||||||||
| EQD | environmental qualification document | |||||||||||||
| EQDB | equipment qualification database | |||||||||||||
| EQDF | equipment qualification data file | |||||||||||||
| EQDP | environmental qualification data package | |||||||||||||
| EQEDC | equipment qualification environmental design criterion/criteria | |||||||||||||
| EQML | equipment qualification master list | |||||||||||||
| EQ-TAP | environmental qualification-task action plan | equipment qualification-task action plan | ||||||||||||
| ER | emergency response | environmental report | ||||||||||||
| ERA | Economic Regulatory Administration | Energy Research Abstracts | Energy Reorganization Act | |||||||||||
| ERB | Executive Resources Board | experiment review board | ||||||||||||
| ERBS | emergency radio broadcast system | |||||||||||||
| ERC | emergency relocation center | emergency response coordinator | Engineering Research Council | |||||||||||
| ERCOT | Electric Reliability Council of Texas | |||||||||||||
| ERCW | emergency raw cooling water | essential raw cooling water | ||||||||||||
| ERCWS | emergency raw cooling water system | |||||||||||||
| ERDA | Energy Research and Development Administration | |||||||||||||
| ERDAM | Energy Research and Development Administration Manual | |||||||||||||
| ERDS | Emergency Response Data System (NRC) | |||||||||||||
| ERF | emergency response facility | entrainment release factor | explosion release factor | |||||||||||
| ERFBS | electrical raceway fire barrier system | |||||||||||||
| ERFDADS | emergency response facility data acquisition and display system | |||||||||||||
| ERFIS | emergency response facility information system | |||||||||||||
| ERG | emergency response guideline | |||||||||||||
| ERIE | emergency resources identification equipment | |||||||||||||
| ERIS | emergency response information system | |||||||||||||
| ERL | emergency reference level | |||||||||||||
| ERO | engineering release order | |||||||||||||
| EROD | executive resources and organizational development | |||||||||||||
| EROS | earth resources observation system | electric radiological occurrence system | ||||||||||||
| ERP | elevated release point | emergency response procedure | ||||||||||||
| ERPA | emergency response planning area | |||||||||||||
| ERR | Elk River Reactor | |||||||||||||
| ERS | Economic Research Service | |||||||||||||
| ERSP | earth resources survey program | |||||||||||||
| ERT | emergency repair team | emergency response team | employee response team | event response team | ||||||||||
| ERTS | environmental radiological technical specification | environmental resources technology satellite | ||||||||||||
| ERV | emergency relief valve | |||||||||||||
| ERVC | external reactor vessel cooling | |||||||||||||
| ES | engineered safeguards | examination standard | extraction steam | |||||||||||
| E/S | electrical supply | |||||||||||||
| ESADA | Empire States Atomic Development Associates | |||||||||||||
| ESAS | emergency safeguards actuation system | engineered safeguards actuation system | ||||||||||||
| ESCA | extended source calibration area | |||||||||||||
| ESCO | Electrical Steel Company | |||||||||||||
| ESCOM | Electricity Supply Commission (South Africa) | |||||||||||||
| ESCP | employee safety concerns program | |||||||||||||
| ESCWS | essential services cooling water system | |||||||||||||
| ESD | extension shaft disconnect | |||||||||||||
| ESDR | engineered safeguards design rating | |||||||||||||
| ESEERC | Empire State Electric Energy Research Corporation | |||||||||||||
| ESF | engineered safety feature | exploratory shaft facility | Exploratory Studies Facility | |||||||||||
| ESFA | engineered safety feature actuation | |||||||||||||
| ESFAS | engineered safety features actuation system | |||||||||||||
| ESFS | engineered safety feature system | |||||||||||||
| ESFVS | engineered safety feature ventilation system | |||||||||||||
| ESO | emergency support organization | Engineering Service Organization | ||||||||||||
| ESP | earth-surface potential | |||||||||||||
| ESQ | equipment seismic qualification | |||||||||||||
| ESR | early site review | electron spin resonance | experimental superheat reactor | |||||||||||
| ESRG | Energy Systems Research Group | |||||||||||||
| ESRP | environmental standard review plan | |||||||||||||
| ESRR | early site review report | |||||||||||||
| ESS | electronic switching system | engagement simulation system | evaporation/solidification system | |||||||||||
| ES&S | engineering services and safety | |||||||||||||
| ESSA | Environmental Science Services Administration | |||||||||||||
| ESSAR | early site safety analysis report | EBASCO Standard Safety Analysis Report | ||||||||||||
| ESSE | EBASCO Site Support Engineering | |||||||||||||
| ESSP | earliest scram set point | |||||||||||||
| ESW | electroslag welding | emergency service water | essential service water | |||||||||||
| ESWD | emergency service water discharge | |||||||||||||
| ESWI | emergency service water intake | |||||||||||||
| ESWS | emergency service water screening | emergency service water system | essential service water system | |||||||||||
| ESWSS | emergency service water supply system | |||||||||||||
| ET | emergency tank | executive team | ||||||||||||
| ETA | equipment transfer aisle | estimated time of arrival | ||||||||||||
| ETBS | elevated tubesheet and baffle sleeve | |||||||||||||
| ETC | estimated time of completion | |||||||||||||
| ETE | evacuation time estimate | |||||||||||||
| ETEC | Energy Technology Engineering Center | |||||||||||||
| ETF | extended task force | |||||||||||||
| ETG | electrical test group | |||||||||||||
| ETL | environmental team leader | |||||||||||||
| ETP | equivalent top product | |||||||||||||
| ETQAP | education and training in quality assurance practices | |||||||||||||
| ETR | engineering test reactor | |||||||||||||
| ETS | elevated tubesheet sleeve | Emergency Telecommunications System | environmental technical specification | events tracking system | ||||||||||
| E&TT | engineering and technical training | |||||||||||||
| EUB | emergency utility building | |||||||||||||
| EURATOM | European Atomic Energy Community | |||||||||||||
| EV | evaporator vessel | exhaust valve | ||||||||||||
| EVA | early valve actuation | |||||||||||||
| EVCC | ex-vessel core catcher | |||||||||||||
| EVESR | ESADA (Empire States Atomic Development Associates) Vallecitos Experimental Superheat Reactor | |||||||||||||
| EVFM | ex-vessel flux monitor | |||||||||||||
| EVHM | ex-vessel handling machine | |||||||||||||
| EVS | emergency ventilation system | |||||||||||||
| EVST | ex-vessel storage tank | |||||||||||||
| EVTM | external vessel transfer machine | ex-vessel transfer machine | ||||||||||||
| EWEB | Eugene Water and Electricity Board | |||||||||||||
| EWG | exempt wholesale generator | |||||||||||||
| EWST | elevated water storage tank | emergency water storage tank | ||||||||||||
| EXSIS | executive shared information system | |||||||||||||
| EZB | exclusion zone boundary | |||||||||||||
| FA | forced air | fuel assembly | full arc | |||||||||||
| F/A | fuel assembly | |||||||||||||
| FAA | Federal Aviation Administration | fresh acid add | ||||||||||||
| FaAA | Failure Analysis Associates | |||||||||||||
| FAB | ISOfabrication isometric | |||||||||||||
| FAC | final acceptance criterion/criteria | flow-accelerated corrosion | ||||||||||||
| FACA | Federal Advisory Committee Act | |||||||||||||
| FACNET | Federal Acquisition Computer Network | |||||||||||||
| FAF | Forum Atomique Français (France) | |||||||||||||
| FAI | fail as is | |||||||||||||
| FAP | fatigue action plan | |||||||||||||
| FAPIG | First Atomic Power Industry Group (Japan) | |||||||||||||
| FAR | Federal Acquisition Regulation | Fontenay-aux-Roses Nuclear Research Center (France) | functional analysis report | |||||||||||
| FARA | Federal Acquisition Reform Act | |||||||||||||
| FARET | fast reactor test assembly | |||||||||||||
| FAS | Federation of American Scientists | |||||||||||||
| FASA | Federal Acquisition Streamlining Act of 1994 | |||||||||||||
| FASAB | Federal Accounting Standards Advisory Board | |||||||||||||
| FASB | Financial Accounting Standards Board | |||||||||||||
| FAST | fuel aerosol simulation test | fuel assembly stability test | ||||||||||||
| FATT | fracture appearance transition temperature | |||||||||||||
| FAX | facsimile | |||||||||||||
| FBACS | fuel building air cleanup system | |||||||||||||
| FBC | fluidized bed combustion | |||||||||||||
| FBFC | Société Franco-Belge de Fabrication de Combustible (France) | |||||||||||||
| FBFS | fuel building filter system | |||||||||||||
| FBI | Federal Bureau of Investigation | |||||||||||||
| FBR | fast breeder reactor | |||||||||||||
| FBRF | fast burst reactor facility | |||||||||||||
| FBV | fuel building ventilation | |||||||||||||
| FC | fail closed | fine control | flow controller | fuel cycle | ||||||||||
| FCA | field change authorization | |||||||||||||
| FCAW | flux cored arc welding | |||||||||||||
| FCD | fine control damper | full core discharge | functional control diagram | |||||||||||
| FCE | flexible critical experiment | |||||||||||||
| FCG | fatigue crack growth | |||||||||||||
| FCI | Fluid Controls Institute | fuel-coolant interaction | ||||||||||||
| FCN | field change notice | |||||||||||||
| FCO | funds certifying official | |||||||||||||
| FCP | field change package | |||||||||||||
| FCR | fast ceramic reactor | fast conversion ratio | field change request | |||||||||||
| FCS | Fort Calhoun Station | |||||||||||||
| F&CS | feedwater and condensate system | |||||||||||||
| FCTT | fuel cladding transient tester | |||||||||||||
| FCU | fan coil unit | |||||||||||||
| FCV | flow control valve | |||||||||||||
| Fd | dilution factor (also dF) | |||||||||||||
| F/D | filter/demineralizer | |||||||||||||
| F&D | finding and determination | |||||||||||||
| FDA | final design acceptance | final design analysis | final design approval | final design authorization | Food and Drug Administration | |||||||||
| FDAA | Federal Disaster Assistance Administration | |||||||||||||
| FDA-EDRO | Food and Drug Administration, Office of Executive Director of Regional Operations | |||||||||||||
| FDB | Fahrenheit dry bulb | |||||||||||||
| FDC | functional design criterion/criteria | |||||||||||||
| FDDR | field deviation disposition request | |||||||||||||
| FDG | fluid distribution grid | |||||||||||||
| FDI | field disposition instruction | |||||||||||||
| FDLP | Federal Depository Library Program (GPO) | |||||||||||||
| FDM | frequency division multiplex | |||||||||||||
| FDR | final design report | functional design requirement | ||||||||||||
| FDS | final docketed special | fire detection system | floor drain system | |||||||||||
| FDSA | facility description and safety analysis/analyses | |||||||||||||
| FDT | floor drain tank | |||||||||||||
| FDTS | floor drain treatment system | |||||||||||||
| FDW | feedwater | |||||||||||||
| FE | flow element | |||||||||||||
| FEA | Federal Energy Administration | front-end analysis/analyses | ||||||||||||
| FECCSR | failure of emergency core cooling system recirculation | |||||||||||||
| FEDAL | failed element detection and location | fuel element detection and location | ||||||||||||
| FEDP | Federal Executive Development Program | |||||||||||||
| FEF | foreign event file | fuel examination facility | fusion energy foundation | |||||||||||
| FEFP | fuel element failure propagation | |||||||||||||
| FEFPL | fuel element failure propagation loop | |||||||||||||
| FEGLI | Federal Employees’ Group Life Insurance | |||||||||||||
| FEIS | final environmental impact statement | full electrical isolation scheme | ||||||||||||
| FELAP | finite element analysis program | |||||||||||||
| FEMA | Federal Emergency Management Agency | |||||||||||||
| FEO | facility emergency organization | |||||||||||||
| FEP | facility emergency plan | |||||||||||||
| FEPCA | Federal Employees Pay Comparability Act of 1990 | |||||||||||||
| FERC | Federal Energy Regulatory Commission | |||||||||||||
| FERD | fuel element rupture detection | |||||||||||||
| FERMILAB | Fermi National Accelerator Laboratory | |||||||||||||
| FERP | fire emergency response plan | |||||||||||||
| FERS | Federal Employees’ Retirement System | |||||||||||||
| FES | final environmental statement | |||||||||||||
| FF | filter factor | fluorine facility | ||||||||||||
| FFD | fitness for duty | |||||||||||||
| FFE | Federal field exercise | FRERP (Federal Radiological Emergency Response Plan) field exercise | full field exercise | |||||||||||
| FFF | fuel failure fraction | |||||||||||||
| FFI | full field investigation | |||||||||||||
| FFLA | Family Friendly Leave Act | |||||||||||||
| FFLS | failed fuel location subsystem | |||||||||||||
| FFM | fuel failure mockup | |||||||||||||
| FFP | fuel fabrication plant | |||||||||||||
| FFR | folded flow reactor | |||||||||||||
| FFRDC | Federally Funded Research and Development Center | |||||||||||||
| FFTF | fast flux test facility | |||||||||||||
| FFTFPO | Fast Flux Test Facility Project Office | |||||||||||||
| FFWT | final feedwater temperature | |||||||||||||
| FG | fission gas | |||||||||||||
| FGAA | Federal Government Accountants Association | |||||||||||||
| FGEL | Fitchburg Gas and Electric Light Co. | |||||||||||||
| FGM | fission gas monitor | |||||||||||||
| FGS | Fulton Generating Station | |||||||||||||
| FHAR | fire hazards analysis report | |||||||||||||
| FHAVS | fuel-handling area ventilation system | |||||||||||||
| FHB | fuel-handling building | |||||||||||||
| FHBVI | fuel-handling building ventilation isolation | |||||||||||||
| FHBVS | fuel-handling building ventilation system | |||||||||||||
| FHC | fuel-handling cell | |||||||||||||
| FHE | fuel-handling equipment | |||||||||||||
| FHES | fuel-handling equipment system | |||||||||||||
| FHFP | full height, full pressure | |||||||||||||
| FHIS | fuel-handling isolation signal | |||||||||||||
| FHOB | fuel-handling operator booth | |||||||||||||
| FHP | fuel-handling procedure | |||||||||||||
| FHPC | fuel-handling and preparation cell | |||||||||||||
| FH&RM | fuel-handling and radioactive maintenance | |||||||||||||
| FHS | fuel-handling system | |||||||||||||
| FHSR | final hazards safety report | final hazards summary report | ||||||||||||
| FHT | feedwater holding tank | |||||||||||||
| FHU | fuel-handling unit | |||||||||||||
| FI | flow indicator | |||||||||||||
| FIA | Factory Insurance Association | |||||||||||||
| FIAS | flow indicator alarm switch | |||||||||||||
| FIEN | Forum Italiano dell’Energia Nucleare (Italy) | |||||||||||||
| FIFO | first in, first out | |||||||||||||
| FIM | field inspection manual | |||||||||||||
| FIMA | fission per initial heavy metal atom | |||||||||||||
| FIN | financial identification number | |||||||||||||
| FIP | Federal information processing | field inspection procedure | ||||||||||||
| FIPS | Federal information processing standard | |||||||||||||
| FIR | food irradiation reactor | |||||||||||||
| FIRM | failure introspection in rotating machinery | |||||||||||||
| FIRMR | Federal Information Resources Management Regulation | |||||||||||||
| FIRR | Federal Institute for Reactor Research (Switzerland) | |||||||||||||
| FIRS | field incident radio system | |||||||||||||
| FISC | fuel inspection and sampling cell | |||||||||||||
| FIST | full integral simulation test | |||||||||||||
| FIT | flow indicator transmitter | |||||||||||||
| FIV | flow-induced vibration | |||||||||||||
| FIVE | fire-induced vulnerability evaluation | |||||||||||||
| FJO | field job order | |||||||||||||
| FLAME | flame acceleration measurement and experiment | |||||||||||||
| FLD | fuel-loading data | |||||||||||||
| FLECHT | full-length emergency cooling heat transfer | |||||||||||||
| FLIP | floating index point | fuel lifetime improvement program | ||||||||||||
| FLIT | free limiting internal truss | |||||||||||||
| FLST | full-length source term | |||||||||||||
| FLTS | full-length tubesheet sleeve | |||||||||||||
| FM | Factory Mutual | fracture mechanics | frequency multiplier | |||||||||||
| FMCRD | fine motion control rod drive | |||||||||||||
| FME | foreign material exclusion | |||||||||||||
| FMEA | Factory Mutual Engineering Associates | failure modes and effects analysis/analyses | ||||||||||||
| FMEF | fuels and materials examination facility | |||||||||||||
| FMF | fuel-melt fraction | |||||||||||||
| FMIT | fusion materials irradiation test | |||||||||||||
| FMRC | Factory Mutual Research Corporation | |||||||||||||
| FMS | flux monitoring system | |||||||||||||
| FNB | Forum Nucléaire Belge (Belgium) | |||||||||||||
| FNP | floating nuclear plant | |||||||||||||
| FNR | Ford Nuclear Reactor | |||||||||||||
| FO | fail open | |||||||||||||
| FOA | forced oil and air | |||||||||||||
| FOAKE | first-of-a-kind engineering | |||||||||||||
| FOCI | foreign ownership, control, or influence | |||||||||||||
| FOE | Friends of the Earth | |||||||||||||
| FOGG | feed-only-good generator | |||||||||||||
| FOIA | Freedom of Information Act | |||||||||||||
| FOL | facility operating license | |||||||||||||
| FONSI | finding of no significant impact | |||||||||||||
| FONUBEL | Forum Nucléaire Belge (Belgium) | |||||||||||||
| FOR | forced outage rate (NRC performance indicator) | |||||||||||||
| FORATOM | Forum Atomique Européen | |||||||||||||
| FORC | fluorinator off-gas recycle compressor | |||||||||||||
| FOSAR | foreign object search and retrieval | |||||||||||||
| FOTA | fuels open test assembly | |||||||||||||
| FP | fire protection | fission product | full power | |||||||||||
| FPC | Federal Power Commission | Florida Power Corporation | fuel pool cooling | |||||||||||
| FPCC | fuel pool cooling and cleanup | |||||||||||||
| FPCCS | fuel pool cooling and cleanup system | |||||||||||||
| FPCSTL | fission product control screening test loop | |||||||||||||
| FPD | full-power day | |||||||||||||
| FPDD | final project design description | |||||||||||||
| FPDI | food processing development irradiator | |||||||||||||
| FPEB | fuel pool exhaust blower | |||||||||||||
| FPFI | fire protection functional inspection | |||||||||||||
| FPL | Florida Power & Light Co. | full performance level | ||||||||||||
| FP&L | Florida Power & Light Co. | |||||||||||||
| FPM | Federal Personnel Manual | |||||||||||||
| FPMR | Federal property management regulation | |||||||||||||
| FPO | Federal Preservation Officer | |||||||||||||
| FPOL | full-power operating license | |||||||||||||
| FPPH | fire protection pump house | |||||||||||||
| FPPVS | fuel pool pump ventilation system | |||||||||||||
| FPR | Federal procurement regulation | flexible plastic reactor | ||||||||||||
| FPS | final policy statement | fire protection system | Fluor Power Services, Inc. | |||||||||||
| FPSL | fission product screening loop | |||||||||||||
| FPT | feedwater pump turbine | fission product test | ||||||||||||
| FP-TAP | Fire Protection–Task Action Plan | |||||||||||||
| FPWT | fuel pool water treatment | |||||||||||||
| FQC | field quality control | |||||||||||||
| FR | Federal Register | |||||||||||||
| FR | final rule | flow regulator | friction ratio | |||||||||||
| FRA | flow recorder and alarm | |||||||||||||
| FRAB | fuel receiving air blower | |||||||||||||
| FRAC | Federal Regional Assistance Committee | |||||||||||||
| FRAF | fuel receiving air filter | |||||||||||||
| FRAMATOME | Société Franco-Américaine de Constructions Atomiques (France) | |||||||||||||
| FRAP | fuel rod analysis program | |||||||||||||
| FRAP-S | fuel rod analysis program–steady-state | |||||||||||||
| FRAP-T | fuel rod analysis program–transient | |||||||||||||
| FRB | Forschungsreaktor Berlin (Germany) | |||||||||||||
| FRC | Federal Radiation Council | Federal Records Center | Federal Response Center | Fire Research Center | flow recording controller | fractional relief capacity | Franklin Research Center | |||||||
| FRCS | flow recording controller switch | |||||||||||||
| FRCTF | fast reactor core test facility | |||||||||||||
| FRD | formerly restricted data | |||||||||||||
| FRERP | Federal Radiological Emergency Response Plan | |||||||||||||
| FRF | fuel reprocessing facility | |||||||||||||
| FRMAC | Federal Radiological Monitoring and Assessment Center | |||||||||||||
| FRMAP | Federal Radiological Monitoring and Assessment Plan | |||||||||||||
| FRN | Federal Register notice | |||||||||||||
| FRN | formal report number | |||||||||||||
| FRP | Federal Response Plan | fuel reprocessing plant | ||||||||||||
| FRPCC | Federal Radiological Preparedness Coordinating Committee | |||||||||||||
| FRS | fast reactor safety | fixed radial shield | floor response spectrum/spectra | fuel receiving station | ||||||||||
| FRSF | fuel receiving and storage facility | |||||||||||||
| FRTEF | fast reactor thermal engineering facility | |||||||||||||
| FS | factor of safety | far side | finishing superheater | flow switch | ||||||||||
| FSAR | final safety analysis report | |||||||||||||
| FSC | Federal supply classification | Federal supply code | ||||||||||||
| FSCR | fuel storage control room | |||||||||||||
| FSCS | fuel storage cable spread | |||||||||||||
| FSEB | fuel storage exhaust blower | |||||||||||||
| FSER | final safety evaluation report | |||||||||||||
| FSF | fuel storage facility | |||||||||||||
| FSI | fluid-structure interaction | |||||||||||||
| FSN | Federal stock number | |||||||||||||
| FSNM | formula quantity of strategic special nuclear material | |||||||||||||
| FSP | fuel storage pool | |||||||||||||
| FSPA | fuel storage personnel area | |||||||||||||
| FSPB | fuel storage processing building | |||||||||||||
| FSPPR | fast supercritical pressure power reactor | |||||||||||||
| FSPVS | fuel storage pool ventilation system | |||||||||||||
| FSR | fast source reactor | First Soviet Reactor | ||||||||||||
| FS&R | filling, storage, and remelt | |||||||||||||
| FS&RS | filling, storage, and remelt system | |||||||||||||
| FSS | Federal Supply Service | fire suppression system | floor service station | |||||||||||
| FSSAR | final standard safety analysis report | |||||||||||||
| FSTF | full-scale test facility | |||||||||||||
| FSU | former Soviet Union | |||||||||||||
| FSV | Fort St. Vrain | |||||||||||||
| FSVNGS | Fort St. Vrain Nuclear Generating Station | |||||||||||||
| FT | fault tree | flow transmitter | ||||||||||||
| FTA | fault tree analysis/analyses | |||||||||||||
| FTC | Federal Telecommunications Center | fuel temperature coefficient | fuel transfer canal | fuel transfer cask | ||||||||||
| FTE | FFTF (fast flux test facility) test engineering | fracture transition elastic | full-time equivalent | |||||||||||
| FTI | Framatome Technologies, Inc. (formerly Babcock & Wilcox) | |||||||||||||
| FTL | full-term license | full-time license | ||||||||||||
| FTM | functional test matrix | |||||||||||||
| FTOL | full-term operating license | |||||||||||||
| FTP | FFTF (fast flux test facility) test procedure | file transfer protocol | fracture transition plastic | fuel transfer pool | fuel transfer port | |||||||||
| FTR | fast test reactor | Federal travel regulation | ||||||||||||
| FTRC | Federal Telecommunications Records Center | |||||||||||||
| FTRIA | flow and temperature removable instrument assembly | |||||||||||||
| FTS | Federal Telecommunications Services | fuel transfer system | ||||||||||||
| FT&SA | fuel transfer and storage assembly | |||||||||||||
| FTTM | few-tube test model | |||||||||||||
| FTTS | flow-through tube sampler | |||||||||||||
| FTU | formazine turbidity unit | |||||||||||||
| FUETAP | formed under elevated temperature and pressure | |||||||||||||
| FUFO | fuel fusing option | |||||||||||||
| FUSE | Floridians United for Safe Energy, Inc. | |||||||||||||
| FUSRAP | formerly utilized sites remedial action program | |||||||||||||
| FV | floor valve | Fussell Vesely | ||||||||||||
| FVA | floor valve adapter | |||||||||||||
| FVC | filtered vented containment | |||||||||||||
| FVCS | filtered vented containment system | |||||||||||||
| FW | feedwater | field weld | Foster Wheeler Corp. | |||||||||||
| FWB | Fahrenheit wet bulb | |||||||||||||
| FWC | feedwater control | |||||||||||||
| FWCI | feedwater coolant injection | |||||||||||||
| FWCS | feedwater control system | |||||||||||||
| FWEC | Foster Wheeler Energy Corp. (subsidiary of Foster Wheeler Corp.) | |||||||||||||
| FWHM | full width half maximum | |||||||||||||
| FWIV | feedwater isolation valve | |||||||||||||
| FWLB | feedwater line break | |||||||||||||
| FWLC | feedwater level control system | |||||||||||||
| FWP | Federal Women’s Program | |||||||||||||
| FWPAC | Federal Women’s Program Advisory Committee | |||||||||||||
| FWPB | feedwater pipe break | |||||||||||||
| FWPCA | Federal Water Pollution Control Act | |||||||||||||
| FWRA | Federal Workforce Restructuring Act of 1994 | |||||||||||||
| FWRV | feedwater regulating valve | |||||||||||||
| FWS | feedwater supply | feedwater system | ||||||||||||
| F&WS | Fish and Wildlife Service | |||||||||||||
| FWSDR | final working system design review | |||||||||||||
| FWSH | fresh water supply header | |||||||||||||
| FWST | fueling water storage tank | |||||||||||||
| FY | fiscal year | |||||||||||||
| FYP | five-year plan | |||||||||||||
| FZS | Forschungszentrum Seibersdorf, G.m.b.H. (Austria) | |||||||||||||
| GA | gas analysis/analyses | General Atomics (before 1988, GA Technologies, Inc.) | grapple adapter | |||||||||||
| GAAA | Groupement pour les Activités Atomiques et Avancées (France) | |||||||||||||
| GAE | general analytical evaluation | |||||||||||||
| GAEC | Greek Atomic Energy Commission | |||||||||||||
| GAHF | grapple adapter handling fixture | |||||||||||||
| GALE | gaseous and liquid effluent | |||||||||||||
| GALL | generic aging lessons learned | |||||||||||||
| GAMAS | General Atomics material assay system | |||||||||||||
| GAN | Gosatomnadzor (Russia) | |||||||||||||
| GAO | General Accounting Office | |||||||||||||
| GAP | Georgia Power Co. | Government Accountability Project | ||||||||||||
| GAPCO | Georgia Power Company | |||||||||||||
| GASSAR | General Atomics Standard Safety Analysis Report | Gilbert Associates Standard Safety Analysis Report | ||||||||||||
| GATT | General Agreement on Tariffs and Trade | |||||||||||||
| GBHC | Great Bay Holdings Corp. | |||||||||||||
| GBPC | Great Bay Power Company | |||||||||||||
| gBq | gigabecquerel | |||||||||||||
| GBR | gas-cooled breeder reactor | |||||||||||||
| GBRA | Gas-Cooled Breeder Reactor Association (Belgium) | |||||||||||||
| GBSR | graphite-moderated boiling and superheating reactor | |||||||||||||
| GC | gas chromatograph | |||||||||||||
| GCB | gravity cutback | |||||||||||||
| GCBR | gas-cooled breeder reactor | |||||||||||||
| GCCA | generic compliance and communications activity | |||||||||||||
| GCEP | gas centrifuge enrichment plant | |||||||||||||
| GCFBR | gas-cooled fast breeder reactor | |||||||||||||
| GCH | gas collection header | |||||||||||||
| GCHWR | gas-cooled, heavy-water-moderated reactor | |||||||||||||
| GCI | Generic Communications Index | |||||||||||||
| GCL | gas-cooled loop | |||||||||||||
| GCR | gas-cooled reactor | |||||||||||||
| GCRA | Gas-Cooled Reactor Associates | |||||||||||||
| GCRE | gas-cooled reactor experiment | |||||||||||||
| GCS | glued cylindrical specimen | |||||||||||||
| GCSS | graphite core support structure | |||||||||||||
| GDC | general design criterion/criteria | |||||||||||||
| GDP | gaseous diffusion plant | |||||||||||||
| GDS | general declassification schedule | graphical display system | ||||||||||||
| GDT | gas decay tank | |||||||||||||
| GE | General Electric Co. | |||||||||||||
| GEAP | General Electric Atomic Products | |||||||||||||
| GEC | General Electric Co. (United Kingdom) | General Electrodynamics Corp. | ||||||||||||
| GEIS | generic environmental impact statement | generic environmental impact study | ||||||||||||
| GEM | graphical evaluation module | |||||||||||||
| GENE | General Electric Nuclear Energy | |||||||||||||
| GEN&SIS | Geographical, Environmental, and Siting Information System | |||||||||||||
| GENTR | General Electric Nuclear Test Reactor | |||||||||||||
| GERA | General Engineering Research and Applications (Belgium) | |||||||||||||
| GERP | general employee retraining program | |||||||||||||
| GERS | general equipment ruggedness spectrum/spectra | |||||||||||||
| GES | generic environmental statement | |||||||||||||
| GESMO | Generic Environmental Statement on Use of Mixed Oxide Fuel | |||||||||||||
| GESSAR | General Electric Standard Safety Analysis Report | |||||||||||||
| GESTAR | General Electric Standard Application for Reactor Fuel | |||||||||||||
| GET | general employee training | |||||||||||||
| GETAB | General Electric Thermal Analysis Basis | |||||||||||||
| GETP | general employee training program | |||||||||||||
| GETR | General Electric Test Reactor | |||||||||||||
| GETSCO | General Electric Technical Services Co. | |||||||||||||
| GFE | Government-furnished equipment | |||||||||||||
| GFE&M | Government-furnished equipment and material | |||||||||||||
| GFES | generic fundamentals examination section | |||||||||||||
| GFFD | gross failed fuel detector | |||||||||||||
| GFK | Gesellschaft für Kernforschung, m.b.H. (Germany) | |||||||||||||
| GFP | Government-furnished property | |||||||||||||
| GFY | Government fiscal year | |||||||||||||
| GG | generator gas | |||||||||||||
| GGA | Gulf General Atomic | |||||||||||||
| GGNS | Grand Gulf Nuclear Station | |||||||||||||
| GH | gate house | |||||||||||||
| G&H | Gibbs & Hill, Inc. | |||||||||||||
| GI | gastrointestinal | generic issue | ||||||||||||
| GIBBSSAR | Gibbs and Hill, Inc., Standard Safety Analysis Report | |||||||||||||
| GIC | geomagnetically induced current | |||||||||||||
| GIDEP | Government-Industry Data Exchange Program | |||||||||||||
| GIF | gamma irradiation facility | |||||||||||||
| GIFT | gas-insulated flow tube | |||||||||||||
| GIIN | Groupe Intersyndical de l’Industrie Nucléaire (France) | |||||||||||||
| GILS | Government Information Locator Service | |||||||||||||
| GIMCS | Generic Issue Management Control System | |||||||||||||
| GIP | generic implementation procedure | |||||||||||||
| GIS | geographic information system | geologic information system | ||||||||||||
| GKM | Grosskraftwerk Mannheim, A.G. (Germany) | |||||||||||||
| GKN | Gemeenschappelijke Kernenergiecentrale Nederland N.V. (Netherlands) | Gemeinschaftskernkraftwerk Neckar, G.m.b.H. (Germany) | ||||||||||||
| GKT | Gemeinschaftskernkraftwerk Tullnerfeld, G.m.b.H. (Austria) | |||||||||||||
| GKW | Gemeinschaftkraftwerk Weser, G.m.b.H. (Germany) | |||||||||||||
| GL | generic letter | Government liaison | ||||||||||||
| GLASS | germanium-lithium-argon scanning system | |||||||||||||
| GLDB | General License Database | |||||||||||||
| GLEEP | Graphite Low-Energy Experimental Pile (United Kingdom) | |||||||||||||
| GLRP | Generic License Renewal Program | |||||||||||||
| GLRWS | gaseous and liquid radioactive waste system | |||||||||||||
| GM | Geiger-Müller (Mueller) | |||||||||||||
| GMAW | gas metal arc weld/welding | |||||||||||||
| GMPC | Green Mountain Power Corp. | |||||||||||||
| GMRA | Government Management Reform Act of 1994 | |||||||||||||
| GMT | Greenwich mean time | |||||||||||||
| GN | general notice | |||||||||||||
| GNGS | Genoa Nuclear Generating Station | |||||||||||||
| GNPP | R.E. Ginna Nuclear Power Plant | |||||||||||||
| GNS | Gesellschaft für Nuklear-Service, m.b.H. (Germany) | |||||||||||||
| GO-CO | Government owned/contractor operated | |||||||||||||
| GOI | general operating instruction | |||||||||||||
| GORX | graphite oxidation from reactor excursion | |||||||||||||
| GOS | group operating service | |||||||||||||
| GP | general purpose | generic project | ||||||||||||
| GPA | Governmental and Public Affairs, Office of (NRC) | |||||||||||||
| GPC | Georgia Power Company | |||||||||||||
| GPCL | general purpose closed loop | |||||||||||||
| GPE | general purpose evaporator | |||||||||||||
| GPL | general purpose loop | |||||||||||||
| GPO | Government Printing Office | |||||||||||||
| GPO | FDLPGPO Federal Depository Library Program | |||||||||||||
| GPP | general plant project | |||||||||||||
| GPR | Groupe Permanent Chargé des Réacteurs Nucleaires | |||||||||||||
| GPRA | Government Performance and Results Act of 1994 | |||||||||||||
| GPS | global positioning system | |||||||||||||
| GPT | general plant telephone | |||||||||||||
| GPU | General Public Utilities Corp. | |||||||||||||
| GPUN | GPU (General Public Utilities) Nuclear Corp. | |||||||||||||
| GPUSC | GPU (General Public Utilities) Service Corp. | |||||||||||||
| GQA | graded quality assurance | |||||||||||||
| GRC | generation review committee | |||||||||||||
| GRI | Gas Research Institute | |||||||||||||
| GRR | Greek Research Reactor | |||||||||||||
| GRS | gaseous radwaste system | geoscience and remote sensing | Gesellschaft für Alagen-und Reaktorsicherheit, m.b.H. (Germany) | |||||||||||
| GRSA | General Radioquimica, S.A. (Spain) | |||||||||||||
| GRT | general reactor technology | |||||||||||||
| GRWS | gaseous radioactive waste system | |||||||||||||
| GS | gland seal | |||||||||||||
| GSA | General Services Administration | |||||||||||||
| GSB | general services building | |||||||||||||
| GSC | gland seal condenser | gland steam condenser | Global Strategy Council | |||||||||||
| GSD | generating significant dose | |||||||||||||
| GSER | generic safety evaluation report | |||||||||||||
| GSH | gas surge header | |||||||||||||
| GSI | generic safety issue | |||||||||||||
| GSLO | gland seal leakoff | |||||||||||||
| GSPS | generating station protection system | |||||||||||||
| GSR | gland steam regulator | |||||||||||||
| GST | gas surge tank | |||||||||||||
| GSU | generator stepup | Gulf States Utilities Co. | ||||||||||||
| GTA | gas tungsten arc | guide tube assembly | ||||||||||||
| GTAW | gas tungsten arc weld | |||||||||||||
| GTCC | greater than Class C | |||||||||||||
| GTG | gas turbine generator | |||||||||||||
| GT-HTGR | gas-turbine high-temperature gas-cooled reactor | |||||||||||||
| GTIG | Gamma Thermometer Interest Group | |||||||||||||
| GTL | gaseous tritium light | |||||||||||||
| GTLS | gaseous tritium light source | |||||||||||||
| GTR | ground test reactor | |||||||||||||
| GTRR | Georgia Technology Research Reactor | |||||||||||||
| GTTF | gas-turbine test facility | |||||||||||||
| GUI | graphical user interface | |||||||||||||
| GUNFCO | Gulf United Nuclear Fuels Corporation | |||||||||||||
| GV | guard vessel | |||||||||||||
| GVR | gas volume ratio | |||||||||||||
| GVW | gross vehicle weight | |||||||||||||
| GWAC | Government-wide agency contract | |||||||||||||
| GWD | gaseous waste disposal | |||||||||||||
| GWMS | gaseous waste management system | gas-water module storage | ||||||||||||
| GWPS | gaseous waste processing system | |||||||||||||
| GWS | gaseous waste system | |||||||||||||
| GWTT | ground-water travel time | |||||||||||||
| Gy | gray | |||||||||||||
| H/A | hand/automatic | |||||||||||||
| HAA | head access area | |||||||||||||
| HAAUP | hanger and analysis update program | |||||||||||||
| HAC | high alumina cement | |||||||||||||
| HACL | Harvard Air Cleaning Laboratory | |||||||||||||
| HAD | heat-activated device | heat-actuated device | ||||||||||||
| HAFM | helium accumulation fluence monitor | |||||||||||||
| HAN | hydroxylamine nitrate | |||||||||||||
| HAP | hafnium column product | |||||||||||||
| HAPS | Houston automatic priority spooling | |||||||||||||
| HAS | holding action system | |||||||||||||
| HASL | Health and Safety Laboratory | |||||||||||||
| HAW | high acid waste | |||||||||||||
| HAX | hafnium column extractant | |||||||||||||
| HAZ | heat-affected zone | |||||||||||||
| HAZCAP | Hazard Communication Compliance Assistance Program (U.S. Occupational Safety and Health Administration) | |||||||||||||
| HAZEL | Homogeneous Assembly Zero Energy Laboratory | |||||||||||||
| HB | handbook | horizontal baffle | ||||||||||||
| HBA | horizontal baffle assembly | |||||||||||||
| HBP | hydrogen behavior program | |||||||||||||
| HBPP | Humboldt Bay Power Plant | |||||||||||||
| HBR2 | H. B. Robinson Steam Electric Plant, Unit 2 | |||||||||||||
| HBS | hydrogen burn survivability | |||||||||||||
| HBWR | Halden Boiling Heavy Water Reactor (Norway) | |||||||||||||
| HCDA | hydrodynamic core-disruptive accident | hypothetical core-disruptive accident | ||||||||||||
| HCDB | heat code database | |||||||||||||
| HCE | human-caused error | |||||||||||||
| HCGS | Hope Creek Generating Station | |||||||||||||
| HCLF | horizontal cask lifting fixture | |||||||||||||
| HCLPF | high confidence in low probability of failure | |||||||||||||
| HCM | hydraulic core mockup | |||||||||||||
| HCOG | Hydrogen Control Owners Group | |||||||||||||
| HCS | hydrazine control system | hydrogen control system | ||||||||||||
| HCSS | head compartment support structure | |||||||||||||
| HCTL | heat capacity temperature level | |||||||||||||
| HCU | hydraulic control unit | |||||||||||||
| HCV | hand control valve | hydraulic control valve | ||||||||||||
| HCW | hafnium column waste | |||||||||||||
| HDGR | high-density gas reactor | |||||||||||||
| HDO | Headquarters duty officer | |||||||||||||
| HDR | Heissdampfreaktor (Germany) | high dose rate | hot dry rock | |||||||||||
| HDT | heated detonation tube | |||||||||||||
| HDW | high-pressure demineralized water | |||||||||||||
| HE | human error | |||||||||||||
| HEARTHFIRE | high-energy accelerator reactor for thermonuclear fusion with ion beam of relativistic energy | |||||||||||||
| HECTOR | Hot, Enriched, Carbon-Moderated, Thermal-Oscillator Reactor (United Kingdom) | |||||||||||||
| HED | historical earthquake data | human engineering deficiency | human engineering discrepancy | |||||||||||
| HEDL | Hanford Engineering and Development Laboratory | |||||||||||||
| HEHF | Hanford Environmental Health Foundation | |||||||||||||
| HEI | Heat Exchanger Institute | |||||||||||||
| HEJ | hybrid expansion joint | |||||||||||||
| HELB | high-energy line break | |||||||||||||
| HELBA | high-energy line break analysis/analyses | |||||||||||||
| HELCO | Hartford Electric Light Co. | |||||||||||||
| HELP | Health and Energy Learning Project | |||||||||||||
| HEM | homogeneous equilibrium model | |||||||||||||
| HEP | human-error probability | |||||||||||||
| HEPA | high-efficiency particulate air | |||||||||||||
| HEPB | high-energy pipe break | |||||||||||||
| HER | human-error rate | |||||||||||||
| HERALD | Heterogenous Experimental Reactor, Aldermaston (United Kingdom) | High Enriched Reactor, Aldermaston (United Kingdom) | ||||||||||||
| HERMES | Heavy Element and Radioactive Material Electromagnetic Separator (United Kingdom) | |||||||||||||
| HERO | Hazards of Electromagnetic Radiation to Ordnance Reactor (United Kingdom) | |||||||||||||
| HES | Hanford Engineering Service | |||||||||||||
| HET | horizontal electrical tunnel | |||||||||||||
| HETS | height equivalent to a theoretical stage | |||||||||||||
| HEU | highly enriched uranium | |||||||||||||
| HEW | Hamburgische Electrizitäts-Werke, A.G. (Germany) | |||||||||||||
| HEX | uranium hexafluoride | |||||||||||||
| HFAR | hardware failure analysis report | |||||||||||||
| HFBR | high-flux beam reactor | |||||||||||||
| HFCE2 | high-flux critical experiment2 | |||||||||||||
| HFE | human factors engineering | |||||||||||||
| HFED | high-frequency envelope detection | |||||||||||||
| HFEF | hot fuel examination facility | |||||||||||||
| HFIR | high-flux isotope reactor | |||||||||||||
| HFP | hot full power | |||||||||||||
| HFPP | human factors program plan | |||||||||||||
| HFR | high-flux reactor | |||||||||||||
| HFRG | human factors review group | |||||||||||||
| HFT | hot functional testing | |||||||||||||
| HG | hydrogen gas | |||||||||||||
| HGE | hydraulic grade elevation | |||||||||||||
| HGMS | high gradient magnetic separator | |||||||||||||
| HG/NG | hydrogen gas/nitrogen gas | |||||||||||||
| HHLR | Horace Hardy Lestor Reactor | |||||||||||||
| HHS | Health and Human Services, U.S. Department of | |||||||||||||
| HHSI | high-head safety injection | |||||||||||||
| HHW | high-heat waste | |||||||||||||
| HI | Hydraulic Institute | |||||||||||||
| H&I | harassment and intimidation | |||||||||||||
| HIC | hand indicator controller | high-integrity container | ||||||||||||
| HI-C | high conversion–critical | |||||||||||||
| HI&D | harassment, intimidation, and discrimination | |||||||||||||
| HID | high-impact design | high-intensity discharge | ||||||||||||
| HIFAR | High-Flux Australian Reactor | |||||||||||||
| HIFRENSA | Hispano-Francesa de Energía Nuclear, S.A. (Spain) | |||||||||||||
| HIL | helium impurities loop | |||||||||||||
| HILAC | heavy ion linear accelerator | |||||||||||||
| HILC | high intermediate level cell | |||||||||||||
| HIP | Hanford Isotopes Plant | |||||||||||||
| HIPA | high-speed interactive plant analysis/analyses | |||||||||||||
| HIPOW | hot isostatic pressing of waste | |||||||||||||
| HIPS | hoist integrated protective system | |||||||||||||
| HIR | hanger inspection report | |||||||||||||
| HIRDL | High-Intensity Radiation Development Laboratory | |||||||||||||
| HIS | hydrogen igniter system | hydrogen ignition system | ||||||||||||
| HITC | Hydraulic Institute test code | |||||||||||||
| HJTC | heated junction thermocouple | |||||||||||||
| HKG | Hochtemperatur-Kernkraftwerk, G.m.b.H. (Germany) | |||||||||||||
| HLB | hot laboratory building | |||||||||||||
| HLC | high-level cell | |||||||||||||
| HLCS | high-level compaction station | |||||||||||||
| HLCV | hot-leg check valve | |||||||||||||
| HLIV | hot-leg isolation valve | |||||||||||||
| HLLWT | high-level liquid waste tank | |||||||||||||
| HLNCC | high-level neutron coincidence counter | |||||||||||||
| HLO | high-level override | |||||||||||||
| HL&P | Houston Lighting & Power Co. | |||||||||||||
| HLRW | high-level radioactive waste | |||||||||||||
| HLSW | high-level solidified waste | |||||||||||||
| HLW | high-level liquid waste | high-level radioactive waste | high-level waste | |||||||||||
| HLWC | high-level waste calcination | high-level waste concentrate | ||||||||||||
| HLWD | high-level waste distillate | |||||||||||||
| HLWF | high-level waste feed | |||||||||||||
| HLWOG | high-level liquid waste off-gas | |||||||||||||
| HLWR | high-level waste repository | |||||||||||||
| HLWS | high-level waste surge | |||||||||||||
| HM | heavy metal | |||||||||||||
| HMS | Hanford Meteorology Survey | hydrogen mixing system | ||||||||||||
| H&N | Holmes and Narver, Inc. | |||||||||||||
| HNL | Holifield National Laboratory | |||||||||||||
| HNNP | Haddam Neck Nuclear Plant | |||||||||||||
| HNP | Haddam Neck Nuclear Plant | Hartsville Nuclear Plant | ||||||||||||
| HNPF | Hallam Nuclear Power Facility | |||||||||||||
| HO | hydraulic operator | |||||||||||||
| HOG | head off-gas | |||||||||||||
| HOO | headquarters operations officer | |||||||||||||
| HOP | HEDL (Hanford Engineering Development Laboratory) overpower | |||||||||||||
| HOTCE | hot critical experiment | |||||||||||||
| HOV | hydraulic-operated valve | |||||||||||||
| HP | Edwin I. Hatch Plant | hanger package | health physicist | health physics | high pressure | high purity | ||||||||
| HPC | health physics center | hot pipe chase | ||||||||||||
| HPCF | high-pressure core flooder | |||||||||||||
| HPCI | high-pressure coolant injection | |||||||||||||
| HPCIS | high-pressure coolant injection system | |||||||||||||
| HPCS | high-pressure core spray | |||||||||||||
| HPD | high-power density | |||||||||||||
| HPED | Human Performance Event Database | |||||||||||||
| HPES | human performance evaluation system | |||||||||||||
| HPFL | high-performance fuels laboratory | |||||||||||||
| HPFP | high-pressure fire protection | |||||||||||||
| HPI | high-pressure injection | |||||||||||||
| HPIP | Human Performance Investigation Process | |||||||||||||
| HPIS | high-pressure injection system | |||||||||||||
| HPME | high-pressure melt ejection | |||||||||||||
| HPN | health physics network | |||||||||||||
| HPOF | high-pressure oil fill | high pressure, oil filled | ||||||||||||
| HPP | health physics program | hot processing plant | ||||||||||||
| HPPP | Human Performance Program Plan | |||||||||||||
| HPR | high-pressure recirculation | |||||||||||||
| HPRR | health physics research reactor | |||||||||||||
| HPRS | high-pressure recirculation system | |||||||||||||
| HPS | Hanford Plant standard | Health Physics Society | health physics station | helium purification system | hydrogen purge system | |||||||||
| HPSI | high-pressure safety injection | |||||||||||||
| HPSIP | high-pressure safety injection pump | |||||||||||||
| HPSP | high-power set point | |||||||||||||
| HPSW | high-pressure service water | |||||||||||||
| HPSWS | high-pressure service water system | |||||||||||||
| HPT | high-pressure turbine | hot pipe tunnel | ||||||||||||
| HPU | hydraulic power unit | |||||||||||||
| HQ | Hydro-Quebec (Canada) | |||||||||||||
| HR | hard rock | Human Resources, Office of (NRC) | hydrogen recombiner | |||||||||||
| HRA | Human Reliability Analysis | |||||||||||||
| HRB | Hochtemperatur-Reaktorbau, G.m.b.H. (Germany) | |||||||||||||
| HRE | homogeneous reactor experiment | |||||||||||||
| HRIS | human resources information system | |||||||||||||
| HRM | human resources management | |||||||||||||
| HRP | Halden Reactor Project | |||||||||||||
| HRPS | hydrogen recombination and purge system | |||||||||||||
| HRRM | high-range radiation monitor | |||||||||||||
| HRS | heat rejection system | |||||||||||||
| HRT | homogeneous reactor test | |||||||||||||
| HS | hand switch | hot shop | ||||||||||||
| HSI | human system interface | |||||||||||||
| HSO | hydrogen seal oil | |||||||||||||
| HSP | hot-shutdown panel | |||||||||||||
| HSST | heavy section steel technology | |||||||||||||
| HSW | heat sink welding | |||||||||||||
| HSWA | Hazardous and Solid Waste Amendments | |||||||||||||
| HSWH | high solid waste header | |||||||||||||
| HTB | hafnium test blade | |||||||||||||
| HTFFT | heat transfer fluid flow thermodynamics | |||||||||||||
| HTGCR | high-temperature gas-cooled reactor | |||||||||||||
| HTGR | high-temperature gas-cooled reactor | high-temperature gas reactor | ||||||||||||
| HTGR-CX | high-temperature gas reactor critical experiment | |||||||||||||
| HTIS | heat transfer instrument system | |||||||||||||
| HTL | heat transfer loop | |||||||||||||
| HTLTR | high-temperature lattice test reactor | |||||||||||||
| HTM | high trajectory missile | |||||||||||||
| HTPC | Hayward Tyler Pump Company | |||||||||||||
| HTR | Hanford Test Reactor | high-temperature reactor | Hitachi Training Reactor (Japan) | |||||||||||
| HTRDA | High-Temperature Reactor Development Associates | |||||||||||||
| HTRE | heat transfer reactor experiment | |||||||||||||
| HTRI | Heat Transfer Research Institute | |||||||||||||
| HTS | heat transfer system | heat transport system | ||||||||||||
| HTSF | high-temperature sodium facility | |||||||||||||
| HTTP | hypertext transfer protocol | |||||||||||||
| HTV | half thickness value | |||||||||||||
| H/U | heatup | |||||||||||||
| HU | hydraulic unit | |||||||||||||
| HUGHES-NEL | Hughes Aircraft Company Nuclear Electronics Laboratory | |||||||||||||
| HULP | Hudson Light and Power Dept. | |||||||||||||
| HUT | HEDL (Hanford Engineering Development Laboratory) up transient | holdup tank | ||||||||||||
| HV | hand valve | |||||||||||||
| H&V | heating and ventilation | |||||||||||||
| HVAC | heating, ventilation, and air conditioning | |||||||||||||
| HVD | heaters, vents, and drains | |||||||||||||
| Hvdc | high-voltage direct current | |||||||||||||
| HVH | hydrogen vent header | |||||||||||||
| HVSU | heating and ventilating supply unit | |||||||||||||
| HW | heavy water | hot water | hotwell | |||||||||||
| HWC | hydrogen water chemistry | |||||||||||||
| HWCTR | heavy-water components test reactor | |||||||||||||
| HWGCR | heavy-water-moderated, gas-cooled reactor | |||||||||||||
| HWH | hot water heating | |||||||||||||
| HWLC | hotwell level control | |||||||||||||
| HWLWCR | heavy-water-moderated, boiling light-water-cooled reactor | |||||||||||||
| HWP | heavy-water plant | |||||||||||||
| HWR | heavy-water reactor | hot water return | ||||||||||||
| HWS | Hanford work specification | Hanford work standard | ||||||||||||
| HWSF | hazardous waste storage facility | |||||||||||||
| HWWVS | hardened wetwall vent system | |||||||||||||
| HX | heat exchange | heat exchanger | ||||||||||||
| HYPO | high-power water-boiler reactor | |||||||||||||
| HZP | hot zero power | |||||||||||||
| IA | industry application | insertion approval | instrument air | |||||||||||
| I/A | isolation amplifier | |||||||||||||
| I&A | identification and authentication | |||||||||||||
| IAA | interim access authorization | |||||||||||||
| IAC | interim acceptance criterion/criteria | |||||||||||||
| IAD | immediate action directive | |||||||||||||
| IAE | instrumentation and electrical | |||||||||||||
| IAEA | International Atomic Energy Agency | |||||||||||||
| IAEC | Israel Atomic Energy Commission | |||||||||||||
| IAG | incident analysis group | |||||||||||||
| IAL | immediate action letter | |||||||||||||
| IALL | intermediate activity level liquid [system] | |||||||||||||
| IANEC | Inter-American Nuclear Energy Commission | |||||||||||||
| IAP | independent assessment program | integrated action plan | Iowa Power | |||||||||||
| IAPG | Interagency Advanced Power Group | |||||||||||||
| IAPMO | International Association of Plumbing and Mechanical Officials | |||||||||||||
| IAR | irradiation-anneal-reirradiation | |||||||||||||
| IAS | instrument air system | |||||||||||||
| IASCC | irradiation-assisted stress-corrosion cracking | |||||||||||||
| IAT | information assessment team | |||||||||||||
| IATI | integrated assessment team inspection | |||||||||||||
| IAW | in accordance with | |||||||||||||
| IB | inner bremsstrahlung | |||||||||||||
| IBA | inner blanket assembly | intermediate break accident | ||||||||||||
| IBEW | International Brotherhood of Electrical Workers | |||||||||||||
| IBJ | Industrial Bank of Japan, Ltd. | Instytut Badán Jadrowych (Poland) | ||||||||||||
| IBM | International Business Machines Corp. | |||||||||||||
| IBSHR | integral boiling and superheat reactor | |||||||||||||
| IC | indicating controller | Internuclear Co. | isolation condenser | |||||||||||
| I&C | instrumentation and control | |||||||||||||
| ICA | item control area | |||||||||||||
| ICAP | International Code Assessment Program | |||||||||||||
| ICAR | interface control action request | |||||||||||||
| ICAVP | independent corrective action verification program | |||||||||||||
| ICB | information collection budget | interface control board | ||||||||||||
| ICBWR | improved cycle boiling-water reactor | |||||||||||||
| ICC | inadequate core cooling | information collection coordinator | Interstate Commerce Commission | |||||||||||
| ICCDP | incremental conditional core damage probability | |||||||||||||
| ICCGR | international cyclic crack growth rate | |||||||||||||
| ICCU | interchannel comparison unit | |||||||||||||
| ICCW | in-containment chilled water | |||||||||||||
| ICD | interface control diagram | interface control document | interface control drawing | |||||||||||
| ICE | implicit continuous-fluid Eulerian | |||||||||||||
| ICEA | Insulated Cable Engineers Association | |||||||||||||
| ICES | integrated civil engineering system | |||||||||||||
| ICI | ice condenser instrumentation | in-core instrumentation | ||||||||||||
| ICODS | Interagency Committee on Dam Safety | |||||||||||||
| ICONS | Information Center on Nuclear Standards | |||||||||||||
| ICP | inert carrier process | instrument calibration procedure | inventory control point | |||||||||||
| ICPP | Idaho Chemical Processing Plant | |||||||||||||
| ICRA | Interagency Committee on Radiological Assistance | |||||||||||||
| ICRI | incomplete control rod insertion | |||||||||||||
| ICRP | International Commission on Radiological Protection | |||||||||||||
| ICRS | instrument calibration and recall system | |||||||||||||
| ICRU | International Commission on Radiation Units and Measurements | |||||||||||||
| ICS | instrumentation and control system | integrated control system | intercommunication system | iodine cleanup system | ||||||||||
| ICSA | in-core shim assembly | |||||||||||||
| ICSD | ionization chamber smoke detector | |||||||||||||
| ICV | independent construction verification | |||||||||||||
| ID | inner diameter | inside diameter | inventory difference | |||||||||||
| IDA | intrusion detection alarm | |||||||||||||
| IDAS | intermediate dose assessment system | |||||||||||||
| IDCA | independent design and construction assessment | |||||||||||||
| IDCOR | Industry Degraded-Core Rulemaking Program | |||||||||||||
| IDCV | independent design and construction verification | |||||||||||||
| IDENTIFY | Instituto de Engenharia Nuclear (Brazil) | |||||||||||||
| IDI | independent design inspection | integrated design inspection | ||||||||||||
| IDLH | immediate danger to life and health | |||||||||||||
| IDMS | isotope dilution mass spectrometry | |||||||||||||
| IDNS | Illinois Department of Nuclear Safety | |||||||||||||
| IDOT | Illinois Department of Transportation | |||||||||||||
| IDP | Individual Development Plan (NRC Form 321) | |||||||||||||
| IDR | independent design review | inspection discrepancy report | interface data report | |||||||||||
| IDS | interim decay storage | intermediate decay storage | isotope detection system | |||||||||||
| IDT | integrated design team | |||||||||||||
| IDV | independent design verification | |||||||||||||
| IDVP | independent design verification program | |||||||||||||
| IE | industrial electronics | initiating event | Inspection and Enforcement, Office of (NRC) | irradiation effect | ||||||||||
| I&E | internally and externally | |||||||||||||
| IEA | Instituto de Energia Atomica (Brazil) | International Energy Agency | ||||||||||||
| IEAR | Instituto de Energia Atomica Reactor (Brazil) | |||||||||||||
| IEB | IE (Office of Inspection and Enforcement) bulletin | |||||||||||||
| IEC | International Electrotechnical Commission | |||||||||||||
| IED | improvised explosive device | |||||||||||||
| IEEE | Institute of Electrical and Electronics Engineers | |||||||||||||
| IEG | items evaluation group | |||||||||||||
| IELP | Iowa Electric Light & Power Co. | |||||||||||||
| IEM | interim examination and maintenance | |||||||||||||
| IEMTF | interim examination and maintenance training facility | |||||||||||||
| IEN | IE (Office of Inspection and Enforcement) notice | |||||||||||||
| IEOTSG | integral economizer once-through steam generator | |||||||||||||
| IES | Illumination Engineering Society | Institute of Environmental Sciences | irradiation effects simulation | |||||||||||
| IESB | iron-enriched synthetic basalt | |||||||||||||
| IET | initial engine test | |||||||||||||
| IFA | instrument fuel assembly | |||||||||||||
| IFB | invitation for bids | |||||||||||||
| IFBA | integral fuel burnable absorber | |||||||||||||
| IFCA | instrumentation to follow the course of an accident | |||||||||||||
| IFCF | integrated fuel cycle facility | |||||||||||||
| IFCI | integrated fuel-coolant interaction | |||||||||||||
| IFE | Institut for Energiteknikk (Norway) | |||||||||||||
| IFI | inspector followup item | |||||||||||||
| IFM | intermediate flow mixing | |||||||||||||
| IFMIS | integrated financial management information system | |||||||||||||
| IFPT | integrated fission product transport | |||||||||||||
| IFR | integral fast reactor | |||||||||||||
| IFTS | irradiated fuel transfer station | irradiated fuel transfer system | ||||||||||||
| IG | Inspector General | |||||||||||||
| IGA | intergranular attack | |||||||||||||
| IGCE | Independent Government Cost Estimate | |||||||||||||
| IGLD | International Great Lakes Datum | |||||||||||||
| IGRP | inert gas receiving and processing | |||||||||||||
| IGR&P | inert gas receiving and processing | |||||||||||||
| IGRPS | inert gas receiving and processing system | |||||||||||||
| IGSCC | intergranular stress-corrosion cracking | |||||||||||||
| IGT | instrument guide tube | |||||||||||||
| IH | integrated head | |||||||||||||
| IHSI | induction heating stress improvement | induction heat stress improvement | intermediate head safety injection | |||||||||||
| IHTS | intermediate heat transport system | |||||||||||||
| IHX | intermediate heat exchanger | |||||||||||||
| IHXGV | intermediate heat exchanger guard vessel | |||||||||||||
| IIE | Instituto de Investigaciones Electricas (Mexico) | |||||||||||||
| IIF | internals indexing fixture | |||||||||||||
| IIGE | Iowa-Illinois Gas and Electric Co. | |||||||||||||
| IIP | Incident Investigation Program | in-core instrument penetration | ||||||||||||
| IIRC | Incident Investigation Review Committee | |||||||||||||
| IIS | integrated implementation schedule | |||||||||||||
| IIT | Illinois Institute of Technology | Incident Investigation Team | Indian Institute of Technology | |||||||||||
| IKRD | inverse kinetics rod drop | |||||||||||||
| ILC | intermediate level cell | |||||||||||||
| ILIP | in-line instrument package | |||||||||||||
| ILLW | intermediate-level liquid waste | |||||||||||||
| ILO | International Labour Organisation | |||||||||||||
| ILPR | Illinois Power Co. | |||||||||||||
| ILRT | integrated leak rate test | integrated leak rate testing | ||||||||||||
| ILSW | intermediate-level solid waste | |||||||||||||
| ILW | intermediate-level waste | |||||||||||||
| ILWC | intermediate-level waste concentrate | |||||||||||||
| ILWD | intermediate-level waste distillate | |||||||||||||
| ILWF | intermediate-level waste feed | |||||||||||||
| ILWS | intermediate-level waste storage | |||||||||||||
| IM | information management | instrumentation and measurement | integrated master | |||||||||||
| IMA | independent management appraisal | |||||||||||||
| IMAS | impurity monitoring and analysis system | |||||||||||||
| IMC | incident management center | Inspection Manual chapter | ||||||||||||
| IMCO | Inter-Government Maritime Consultative Organization | |||||||||||||
| IMECo | Indiana & Michigan Electric Company | |||||||||||||
| IMP | instrument maintenance procedure | |||||||||||||
| IMPAC | International Merchant Authorization Card | |||||||||||||
| IMPCo | Indiana Michigan Power Company | |||||||||||||
| IMPEP | Integrated Material Performance Evaluation Program | |||||||||||||
| IMPR | Indiana & Michigan Power Co. | |||||||||||||
| IMS | in-core monitoring system | ion mobility spectrometer | ||||||||||||
| IN | information notice | |||||||||||||
| INB | Internationale Natrium-Brutreaktor-Bau, G.m.b.H. (Germany) | |||||||||||||
| INC | Idaho Nuclear Corporation | |||||||||||||
| INCA | in-core analysis/analyses | inner neutron control assembly | ||||||||||||
| INCB | International Nuclear Credit Bank | |||||||||||||
| INCOT | in-core test | |||||||||||||
| IND | investigational exemption of a new drug | |||||||||||||
| INDE | inservice nondestructive examination | |||||||||||||
| INDEX | integrated nuclear data exchange | |||||||||||||
| INEC | Idaho Nuclear Energy Commission | |||||||||||||
| INEEL | Idaho National Engineering and Environmental Laboratory (formerly INEL) | |||||||||||||
| INEL | Idaho National Engineering Laboratory (now INEEL) | |||||||||||||
| INER | Institute of Nuclear Energy Research (Taiwan) | |||||||||||||
| INES | international nuclear event scale | |||||||||||||
| INFCE | International Nuclear Fuel Cycle Evaluation | |||||||||||||
| ININ | Instituto Nacional de Investigaciones Nucleares (Mexico) | |||||||||||||
| INIS | International Nuclear Information System | |||||||||||||
| INITEC | Empresa Nacional de Ingeniería y Tecnología, S.A. (Spain) | |||||||||||||
| INLA | International Nuclear Law Association | |||||||||||||
| INMM | Institute of Nuclear Materials Management | |||||||||||||
| INPO | Institute of Nuclear Power Operations | |||||||||||||
| INR | immediate notification report | |||||||||||||
| INS | Immigration and Naturalization Service | |||||||||||||
| INSAG | International Nuclear Safety Advisory Group | |||||||||||||
| INSRP | Interagency Nuclear Safety Review Panel | |||||||||||||
| INTERATOM | Internationale Atomreaktorbau, G.m.b.H. (Germany) | |||||||||||||
| INTLO | International Nuclear Technology Liaison Office | |||||||||||||
| INX | ion exchange | |||||||||||||
| I/O | input/output | |||||||||||||
| IOAA | Independent Offices Appropriation Act of 1952 | |||||||||||||
| IOE | industry operating experience | |||||||||||||
| IOERS | integrated operating experience reporting system | |||||||||||||
| IORV | inadvertently opened relief valve | |||||||||||||
| IOSRV | inadvertent opening of a safety/relief valve | |||||||||||||
| IP | inspection procedure | |||||||||||||
| I&P | inerting and preheating | |||||||||||||
| IPA | Intergovernmental Personnel Act | iterative performance assessment | ||||||||||||
| IPAC | International Participants Advisory Committee (Institute of Nuclear Power Operations) | |||||||||||||
| IPAP | integrated performance assessment process | integrated performance assessment program | ||||||||||||
| IPAS | Inspection Procedure Authority System | |||||||||||||
| IPB | illustrated parts breakdown | |||||||||||||
| IPC | Interjurisdictional Planning Committee | |||||||||||||
| IPCEA | Insulated Power Cable Engineers Association | |||||||||||||
| IPDD | initial project design description | |||||||||||||
| IPE | individual plant examination | integrated plant evaluation | ||||||||||||
| IPEEE | individual plant examination of external events | |||||||||||||
| IPF | iodine protection factor | |||||||||||||
| IPHT | in-process heat treatment | |||||||||||||
| IPIRG | International Piping Integrity Research Group | |||||||||||||
| IPL | initial program load | |||||||||||||
| IPP | independent power producer | integrated plotting package | ||||||||||||
| IPR | initial pressure regulator | |||||||||||||
| IPRDS | in-plant reliability data system | |||||||||||||
| IPRN | in-process rework notice | |||||||||||||
| IPS | Indian Point Station | interim policy statement | investment protection subsystem | Iowa Public Service Company | iron pipe size | |||||||||
| IPSAR | integrated plant safety assessment report | |||||||||||||
| IPSN | Institute of Nuclear Safety and Protection (France) | |||||||||||||
| IPTS | integrated pressurized thermal shock | |||||||||||||
| IpyC | inner pyrolytic carbon | |||||||||||||
| IR | information request | inspection report | intermediate range | |||||||||||
| IRA | integrated review of assessment | |||||||||||||
| IRAC | Interdepartmental Radio Advisory Committee | |||||||||||||
| IRACT | incident response action coordination team | |||||||||||||
| IRAP | Interagency Radiological Assistance Plan | Interagency Radiological Assistance Program | ||||||||||||
| IRB | inside reactor building | Istituto Ricerche Breda, SpA (Italy) | ||||||||||||
| IRC | incident response center | Indiana Regional Cancer (Center) | internal review committee | |||||||||||
| IRE | Institut National des Radioéléments (Belgium) | |||||||||||||
| IREP | integrated reliability evaluation program | interim reliability evaluation program | ||||||||||||
| IRFM | integral reactor flow model | |||||||||||||
| IRG | Interagency Review Group | |||||||||||||
| IRM | information resources management | Information Resources Management, Office of (NRC) | intermediate-range monitor | |||||||||||
| IRMP | Independent Radiation Monitoring Program | |||||||||||||
| IRN | item removal notice | |||||||||||||
| IRP | incident response plan | intermediate rotating plug | ||||||||||||
| IRPA | International Radiation Protection Association (France) | |||||||||||||
| IRPI | individual rod position indicator | |||||||||||||
| IRR | Institute for Reactor Research (Switzerland) | Israeli Research Reactor | ||||||||||||
| IRRAS | integrated reliability and risk analysis system | |||||||||||||
| IRS | Incident Reporting System | Inquiry and Reporting System | Institut für Reaktorsicherheit der Technischen Überwachungs-Vereine, e.V. (Germany) | iodine removal system | ||||||||||
| IRSF | interim radwaste storage facility | |||||||||||||
| IRSP | inside recirculation spray pump | |||||||||||||
| IRSR | Issue Resolution Status Report | |||||||||||||
| IRTS | inspection report tracking system | |||||||||||||
| IRVH | integrated reactor vessel head | |||||||||||||
| IRWST | in-containment refueling water storage tank | |||||||||||||
| IS | indicating switch | information system | ||||||||||||
| ISA | independent safety analysis | independent safety assessment or analysis | Instrument Society of America | integrated safety assessment | ||||||||||
| ISAF | isotopic source adjustable fissometer | |||||||||||||
| ISAM | indexed sequential access method | |||||||||||||
| ISAP | integrated safety assessment program | |||||||||||||
| ISAS | isotopic source assay system | |||||||||||||
| ISCA | Intersociety Committee on Methods for Ambient Air Sampling | |||||||||||||
| ISCORS | Interagency Steering Committee on Radiation Standards | |||||||||||||
| ISCP | intermediate sodium characterization package | |||||||||||||
| ISCT | important-to-safety-criteria task | inner seal collar tool | ||||||||||||
| ISD | instructional system design | |||||||||||||
| ISDF | intermediate sodium disposal facility | |||||||||||||
| ISDN | integrated services digital network | |||||||||||||
| ISE | ion-selective electrode | |||||||||||||
| ISEG | independent safety engineering group | |||||||||||||
| ISER | integral systems experimental requirement | |||||||||||||
| ISFSF | independent spent fuel storage facility | |||||||||||||
| ISFSI | independent spent fuel storage installation | |||||||||||||
| ISG | integrated scheduling group | |||||||||||||
| ISGMP | integrated scheduling group manual procedure | |||||||||||||
| ISGTR | induced steam generator tube rupture | |||||||||||||
| ISI | inservice inspection | |||||||||||||
| ISIS | integrated safeguards information system | |||||||||||||
| ISITS | integrated safety issues tracking system | |||||||||||||
| ISLH | inservice leak and hydrostatic | |||||||||||||
| ISLOCA | interfacing-systems loss-of-coolant accident | |||||||||||||
| ISMES | Istituto Sperimentale Modelli e Strutture (Italy) | |||||||||||||
| ISNF | intermediate-energy standard neutron field | |||||||||||||
| ISO | independent system operation | independent system operator | International Standardization Organization | |||||||||||
| ISO/DWG | isometric drawing | |||||||||||||
| ISOO | Information Security Oversight Office | |||||||||||||
| ISP | industrial security plan | |||||||||||||
| ISR | intermediate sodium removal | |||||||||||||
| ISSO | Information System Security Officer | |||||||||||||
| IST | inservice test | inservice testing | integral simulation test | integral systems test | ||||||||||
| ISTS | Improved Standard Technical Specifications | |||||||||||||
| ISV | in situ verification | |||||||||||||
| IT | information technology | information theory | instrument test | instrument tree | ||||||||||
| I&T | inspection and test | |||||||||||||
| ITAAC | inspection, test, analysis, and acceptance criterion/criteria | |||||||||||||
| ITAL | Instituut voor Toepassing van Atoomenergie in de Landbouw (Netherlands) | |||||||||||||
| IT&AP | inspection test and analysis plan | |||||||||||||
| ITC | Information Technology Council | isothermal temperature coefficient | ||||||||||||
| ITDP | improved thermal design procedure | |||||||||||||
| ITF | interstitial transfer facility | |||||||||||||
| ITFTRIA | instrument tree flow and temperature removal instrument assembly | |||||||||||||
| ITI | inspection/test instruction | ion track instrument | ||||||||||||
| ITIP | Industry Technical Information Program | |||||||||||||
| ITL | Industrial Testing Laboratories | |||||||||||||
| ITM | in-core temperature monitor | information technology management | ||||||||||||
| ITMA | irradiation test management activity | |||||||||||||
| ITMRA | Information Technology Management Reform Act | |||||||||||||
| ITMS | in-core temperature monitoring system | |||||||||||||
| ITPOP | independent, third-party oversight program | |||||||||||||
| ITR | instrument test rig | |||||||||||||
| ITRI | Industrial Technology Research Institute (Taiwan) | |||||||||||||
| ITRIA | instrument tree removable instrument assembly | |||||||||||||
| ITS | Idaho Test Station | important to safety | improved technical specification | Information Technology Services | inventory tracking system | |||||||||
| IT/SP | instrument tree/spool piece | |||||||||||||
| ITV | intermediate test vessel | |||||||||||||
| IUPAC | International Union of Pure and Applied Chemistry | |||||||||||||
| IUPAP | International Union of Pure and Applied Physics | |||||||||||||
| IV | independent verification | |||||||||||||
| IVHM | in-vessel handling machine | |||||||||||||
| IVHM-EM | in-vessel handling machine–engineering model | |||||||||||||
| IVHX | in-vessel heat exchanger | |||||||||||||
| IVIC | Instituto Venezolano de Investigaciones Cientificas (Venezuela) | |||||||||||||
| IVO | Imatran Voima Osakeyhtio (Finland) | |||||||||||||
| IVP | integrated verification plan | |||||||||||||
| IVS | in-vessel storage | |||||||||||||
| IVSM | in-vessel storage module | |||||||||||||
| IVTM | in-vessel transfer machine | |||||||||||||
| IWF | industrial waste filter | industrial waste filtration | ||||||||||||
| IWFS | industrial waste filter system | industrial waste filtration system | ||||||||||||
| IWGFR | International Working Group on Fast Breeder Reactors | |||||||||||||
| IWRC | iron wire rope core | |||||||||||||
| IWS/IT | integrated work sequence/inspection traveler | |||||||||||||
| IWTS | industrial waste treatment system | |||||||||||||
| IX | ion exchanger | |||||||||||||
| IZ | isolation zone | |||||||||||||
| JABE | John A. Blume and Associates, Engineers | |||||||||||||
| JAEC | Japan Atomic Energy Commission | |||||||||||||
| JAEIP | Japan Atomic Energy Insurance Pool | |||||||||||||
| JAERI | Japan Atomic Energy Research Institute | |||||||||||||
| JAERO | Japan Atomic Energy Relations Organization | |||||||||||||
| JAF | James A. FitzPatrick Nuclear Power Plant | |||||||||||||
| JAFNPP | James A. FitzPatrick Nuclear Power Plant | |||||||||||||
| JAIF | Japan Atomic Industrial Forum | |||||||||||||
| JAJ | J.A. Jones Co. | |||||||||||||
| JANAP | joint Army-Navy-Air Force publication | |||||||||||||
| JAPC | Japan Atomic Power Co. | |||||||||||||
| JARRP | Japan Association for Radiation Research on Polymers | |||||||||||||
| JCAE | Joint Committee on Atomic Energy | |||||||||||||
| JCCCNRS | Joint Coordinating Committee for Civilian Nuclear Reactor Safety | |||||||||||||
| JCL | job control language | |||||||||||||
| JCO | justification for continued operation | |||||||||||||
| JCP | Joint Committee on Printing | |||||||||||||
| JCPL | Jersey Central Power & Light Co. | |||||||||||||
| JCP&L | Jersey Central Power & Light Co. | |||||||||||||
| JEA | Jacksonville Electric Authority | |||||||||||||
| JEEP | joint emergency evacuation plan | joint establishment experimental pile | ||||||||||||
| JEN | Junta de Energía Nuclear (Spain) | |||||||||||||
| JEPIC | Japan Electric Power Information Center | |||||||||||||
| JET | joint European torus | |||||||||||||
| JETR | Japan Engineering Test Reactor | |||||||||||||
| JFNP | Joseph M. Farley Nuclear Plant | |||||||||||||
| JFNPP | James A. FitzPatrick Nuclear Power Plant | |||||||||||||
| JGC | Japan Gasoline Co., Ltd. | |||||||||||||
| JGCR | Japan Gas-Cooled Reactor | |||||||||||||
| JHEP | joint human error probability | |||||||||||||
| JINR | Joint Institute for Nuclear Research | |||||||||||||
| JIO | justification for interim operation | |||||||||||||
| JOFOC | justification for other than full and open competition | |||||||||||||
| JOG | Joint Owners Group | |||||||||||||
| JPDR | Japan Power Demonstration Reactor | |||||||||||||
| JPM | job performance measure | |||||||||||||
| JRR | Japanese Research Reactor | |||||||||||||
| JSW | Japan Steel Works, Ltd. | |||||||||||||
| JTA | job task analysis/analyses | |||||||||||||
| JTG | Joint Test Group | |||||||||||||
| JUMA | Joint Utility Management Assessment Group | |||||||||||||
| JURIS | justice retrieval and inquiry system | |||||||||||||
| K/A | knowledge and abilities | |||||||||||||
| KAEA | Kazakh Atomic Energy Agency | |||||||||||||
| KAERI | Korea Atomic Energy Research Institute | |||||||||||||
| KAIF | Korea Atomic Industrial Forum | |||||||||||||
| KALC | krypton absorption in liquid carbon dioxide | |||||||||||||
| KANUPP | Karachi Nuclear Power Plant (Pakistan) | |||||||||||||
| KAPL | Knolls Atomic Power Laboratory | |||||||||||||
| KBG | Kernkraftwerk-Betriebsgesellschaft, m.b.H. (Germany) | |||||||||||||
| KBWP | Kernkraftwerk Baden-Wuerttemberg Planungsgesellschaft (Germany) | |||||||||||||
| KE | Kaiser Engineers | |||||||||||||
| KEEPS | Kodak Ektaprint Electronic Publishing System | |||||||||||||
| Keff | effective multiplication factor | |||||||||||||
| KEMA | Tot Keuring van Elektrotechnische Materialen, N.V. (Netherlands) | |||||||||||||
| KERMA | kinetic energy released in material | |||||||||||||
| KEWA | Kernbrennstoff-Wiederaufarbeitungs-Gesellschaft, m.b.H. (Germany) | |||||||||||||
| KEWB | kinetic experiment on water boilers | |||||||||||||
| KFKI | Központi Fizakai Kutató Intézet (Hungary) | |||||||||||||
| KGBS | krypton gas bottling station | |||||||||||||
| KG&E | Kansas Gas & Electric | |||||||||||||
| KKB | Kernkraftwerk Brunsbuettel, G.m.b.H. (Germany) | |||||||||||||
| KKK | Kernkraftwerk Krummel, G.m.b.H. (Germany) | |||||||||||||
| KKL | Kernkraftwerk Leibstadt, A.G. (Switzerland) | |||||||||||||
| KKN | Kernkraftwerk Niederaichbach, G.m.b.H. (Germany) | |||||||||||||
| KKP | Kernkraftwerk Phillipsburg, G.m.b.H. (Germany) | |||||||||||||
| KMC | Kerr McGee Corp. | |||||||||||||
| KNFDI | Korea Nuclear Fuel Development Institute | |||||||||||||
| KNPP | Kewaunee Nuclear Power Plant | |||||||||||||
| KNPS | Kuosheng Nuclear Power Station (Taiwan) | |||||||||||||
| KNU | Korean Nuclear Unit | |||||||||||||
| KPDS | key plant damage state | |||||||||||||
| KRB | Kernkraftwerk Gundremmingen Betriebsgesellschaft (Germany) | Kernkraftwerk RWE-Bayernwerk, G.m.b.H. (Germany) | ||||||||||||
| KRR | Kansai Research Reactor (Japan) | |||||||||||||
| KSAs | knowledge, skills, and abilities | |||||||||||||
| KSB | Klein, Schanzlin and Becker Aktiengesellschaft (Germany) | |||||||||||||
| KSF | Karen Silkwood Fund | |||||||||||||
| KSGE | Kansas Gas & Electric Co. | |||||||||||||
| KSH | Kernenergie-Gesellschaft Schleswig-Holstein, m.b.H. (Germany) | |||||||||||||
| KSTR | Kema Suspension Test Reactor (Netherlands) | |||||||||||||
| KTG | Kerntechnische Gesellschaft im Deutschen Atomforum, e.V. (Germany) | |||||||||||||
| KTI | key technical issue | |||||||||||||
| KTS | Kerntechnische Sektion der Schweizerischen Vereinigung für Atomenergie (Switzerland) | |||||||||||||
| KTU | key technical uncertainty | |||||||||||||
| KWG | Kernkraftwerk Graben, A.G. (Switzerland) | |||||||||||||
| KWL | Kernkraftwerk Lingen, G.m.b.H. (Germany) | |||||||||||||
| KWO | Kernkraftwerk Obrigheim, G.m.b.H. (Germany) | |||||||||||||
| KWS | Kernkraftwerk Sud, G.m.b.H. (Germany) | |||||||||||||
| KWU | Kraftwerk Union Aktiengesellschaft (Germany) | |||||||||||||
| LA | licensing assistant | local alarm | ||||||||||||
| LACBWR | LaCrosse Boiling Water Reactor | |||||||||||||
| LACE | LWR (light-water reactor) aerosol containment experiment | |||||||||||||
| LAFM | Los Alamos Fuel Model | |||||||||||||
| LALL | low-activity level liquid [system] | |||||||||||||
| LAMPRE | Los Alamos Molten Plutonium Reactor Experiment | |||||||||||||
| LAN | local area network | |||||||||||||
| LAND | League Against Nuclear Dangers | |||||||||||||
| LANL | Los Alamos National Laboratory (formerly Los Alamos Scientific Laboratory) | |||||||||||||
| LAPL | Louisiana Power & Light Co. | |||||||||||||
| LAPPES | large power plant effluent study | |||||||||||||
| LAPRE | Los Alamos Power Reactor Experiment | |||||||||||||
| LAR | license amendment request | licensing action report | limited analytical review | local automatic regulation | ||||||||||
| LASL | Los Alamos Scientific Laboratory (now LANL) | |||||||||||||
| LAW | low-acid waste | |||||||||||||
| LAWB | Los Alamos Water Boiler | |||||||||||||
| LBB | leak before break | |||||||||||||
| LBE | licensing-basis event | |||||||||||||
| LBL | Lawrence Berkeley Laboratory | |||||||||||||
| LBLOCA | large-break loss-of-coolant accident | |||||||||||||
| LBP | land-based plant | lumped burnable poison | ||||||||||||
| LBPR | lumped burnable poison rod | |||||||||||||
| LBRB | leak before risk of break | |||||||||||||
| LC | level controller | local control | locked closed | |||||||||||
| LCCC | large-component cleaning cell | |||||||||||||
| LCCV | large-component cleaning vessel | |||||||||||||
| LCHS | large-component handling system | |||||||||||||
| LCL | lower control limit | |||||||||||||
| LCM | LOCA (loss-of-coolant accident) core melt | |||||||||||||
| LCO | limiting condition for operation | |||||||||||||
| LCR | large component removal | log count rate | ||||||||||||
| LCRE | lithium-cooled reactor experiment | |||||||||||||
| LCRM | linear count rate meter | |||||||||||||
| LCS | leakage collection system | leakage control system | level control system | loop control system | ||||||||||
| LCTI | large-component test installation | |||||||||||||
| LCTL | large-component test loop | |||||||||||||
| LCV | level control valve | local control valve | ||||||||||||
| LCVIP | licensee contractor vendor inspection program | |||||||||||||
| LD | letdown | lethal dose | ||||||||||||
| L/D | length to diameter | |||||||||||||
| LDCC | large-diameter component cask | |||||||||||||
| LDR | load definition report | low dose rate | ||||||||||||
| L/DRS | level and density recorder switch | |||||||||||||
| LDS | leak detection system | |||||||||||||
| LDST | letdown storage tank | |||||||||||||
| LE | left end | limit of error | ||||||||||||
| LEAC | levelized energy adjustment clause | |||||||||||||
| LED | light-emitting diode | |||||||||||||
| LEFM | linear elastic fracture mechanics | |||||||||||||
| LEID | limit of error on inventory difference | |||||||||||||
| LEL | large engineering loop | lower electrical limit | ||||||||||||
| LEMUF | limit of error on material unaccounted for | |||||||||||||
| LEO | lasers and electro-optics | |||||||||||||
| LEP | local emergency protection | |||||||||||||
| LER | licensee event report | |||||||||||||
| LERF | large early release frequency | |||||||||||||
| LERO | local emergency response organization | |||||||||||||
| LERP | large early release probability | |||||||||||||
| LES | limited early site | Louisiana Energy Services | ||||||||||||
| LESR | limited early site review | |||||||||||||
| LET | linear energy transfer | |||||||||||||
| LEU | license to export uranium | low-enriched uranium | ||||||||||||
| LFA | lead Federal agency | |||||||||||||
| LFBR | liquid fluidized bed reactor | |||||||||||||
| LFBR-CX | liquid fluidized bed reactor–critical experiment | |||||||||||||
| LFDCP | local fire detection control panel | |||||||||||||
| LFL | lower flammability limit | |||||||||||||
| LFMS | license fee management staff | |||||||||||||
| LGR | light-water-cooled, graphite-moderated reactor | |||||||||||||
| LGS | Limerick Generating Station | lower group stop | ||||||||||||
| LH | low head | |||||||||||||
| LHC | Little Harbor Consultants, Inc. | |||||||||||||
| LHGR | linear heat generation rate | |||||||||||||
| LHM | loop-handling machine | |||||||||||||
| LHR | linear heat rate | |||||||||||||
| LHS | Latin Hypercube Sampling | loop-handling system | ||||||||||||
| LHSI | low-head safety injection | |||||||||||||
| LHST | laundry and hot shower tank | |||||||||||||
| LI | level indicator | |||||||||||||
| LIC | level indicating controller | level indicator controller | loop insertion cell | |||||||||||
| LIFO | last in, first out | |||||||||||||
| LILCO | Long Island Lighting Co. | |||||||||||||
| LIM | ligament instability model | lower inlet module | ||||||||||||
| LIMB | liquid metal breeder | |||||||||||||
| LIMSW | limit switch | |||||||||||||
| LIM | SWlimit switch | |||||||||||||
| LINAC | linear accelerator | |||||||||||||
| LIONS | Licensing and Inspection Online System | |||||||||||||
| LIRS | level indicator recording switch | |||||||||||||
| LITR | low-intensity test reactor | |||||||||||||
| LIWB | Livermore Water Boiler | |||||||||||||
| LL | liquid limit | |||||||||||||
| LLCS | low-level compaction station | |||||||||||||
| LLD | low-level dose | lower limit of detection | ||||||||||||
| LLEA | local law enforcement agency | |||||||||||||
| LLFM | low-level flux monitor | |||||||||||||
| LLLWT | low-level liquid waste tank | |||||||||||||
| LLMPP | liquid level monitor port plug | |||||||||||||
| LLNL | Lawrence Livermore National Laboratory | |||||||||||||
| LLRT | local leak-rate test | |||||||||||||
| LLRW | low-level radioactive waste | |||||||||||||
| LLRWPAA | Low-Level Radioactive Waste Policy Amendments Act | |||||||||||||
| LLS | low-level solid | low-low set | ||||||||||||
| LLSV | low-level storage vault | |||||||||||||
| LLSWV | low-level solid-waste storage vault | |||||||||||||
| LLT | liquid level transducer | |||||||||||||
| LLTR | large-leak test rig | |||||||||||||
| LLW | low-level radioactive waste | low-level waste | ||||||||||||
| LLWBG | low-level-waste burial ground | |||||||||||||
| LLWSV | low-level-waste storage vault | |||||||||||||
| LM | labor management | local manual | ||||||||||||
| LMEC | Liquid Metal Engineering Center | |||||||||||||
| LMFBR | liquid metal fast breeder reactor | |||||||||||||
| LMFR | liquid metal fuel reactor | |||||||||||||
| LMFRE | liquid metal fuel reactor experiment | |||||||||||||
| LMHX | liquid metal heat exchanger | |||||||||||||
| LMP | licensing milestone plan | |||||||||||||
| LMR | liquid metal reactor | |||||||||||||
| LMS | licensing management system | |||||||||||||
| LMTD | logarithmic mean temperature difference | |||||||||||||
| LNG | liquefied natural gas | liquid natural gas | ||||||||||||
| LNGS | LaCrosse Nuclear Generating Station | |||||||||||||
| LNS | liquid nitrogen system | London Nuclear Services | ||||||||||||
| LNT | linear, no-threshold | |||||||||||||
| LNW | loss of normal water | |||||||||||||
| LN2 | liquid nitrogen | |||||||||||||
| LO | lock open | locked open | lube oil | |||||||||||
| LOA | letter of agreement | line of assurance | ||||||||||||
| LOBI | loop blowdown investigation | |||||||||||||
| LOCA | loss-of-coolant accident | |||||||||||||
| LOCE | loss-of-coolant experiment | |||||||||||||
| LOCF | loss of coolant flow | |||||||||||||
| LOCP | loss-of-coolant protection | |||||||||||||
| LOCV | loss of condenser vacuum | |||||||||||||
| LOF | lack of fusion | loss of feedwater | loss of flow | |||||||||||
| LOFA | loss-of-feedwater accident | loss-of-flow accident | ||||||||||||
| LOFC | loss of forced circulation | loss of forced cooling | ||||||||||||
| LOFT | loss-of-fluid test | |||||||||||||
| LOFW | loss of feedwater | |||||||||||||
| LOFWS | loss of flow without scram | |||||||||||||
| LOHS | loss of heat sink | |||||||||||||
| LOHSWS | loss of heat sink without scram | |||||||||||||
| LOI | loss of ignition | |||||||||||||
| LOMF | loss of main feedwater | |||||||||||||
| LOMFW | loss of main feedwater | |||||||||||||
| LOOP | loss of offsite power | |||||||||||||
| LOP | loss of offsite power | loss of power | ||||||||||||
| LOPAR | low parasitic fuel | |||||||||||||
| LOPI | loss of pipe integrity | |||||||||||||
| LOPO | low power | |||||||||||||
| LOPRA | low-power reactor assembly | |||||||||||||
| LOPS | loss-of-power start | |||||||||||||
| LOR | lower oil reservoir | |||||||||||||
| LORD | licensing online retrieval data | |||||||||||||
| LORDS | licensing online retrieval data system | |||||||||||||
| LORT | licensed operator requalification training | |||||||||||||
| LOSP | loss of offsite power | loss of station power | loss of system pressure | |||||||||||
| LOST | lube oil storage tank | |||||||||||||
| LOU | letter of understanding | limited official use | ||||||||||||
| LOVS | loss-of-voltage signal | loss-of-voltage start | ||||||||||||
| LP | liquid penetrant | low pressure | ||||||||||||
| LPC | loop preparation cask | |||||||||||||
| LPCI | low-pressure coolant injection | low-pressure core injection | ||||||||||||
| LPCIS | low-pressure coolant injection system | |||||||||||||
| LPCS | low-pressure core spray | |||||||||||||
| LPD | linear power density | local power density | ||||||||||||
| LPDR | local public document room | |||||||||||||
| LPE | loop preparation equipment | |||||||||||||
| LPG | liquefied petroleum gas | liquid petroleum gas | low-pressure gas | |||||||||||
| LPGS | Liquid Pathway Generic Study | |||||||||||||
| LPHSW | last pass heat sink welding | |||||||||||||
| LPI | low-power injection | low-pressure injection | ||||||||||||
| LPIS | low-pressure injection system | |||||||||||||
| LP&L | Louisiana Power & Light Co. | |||||||||||||
| LPLNG | low-pressure liquefied natural gas | |||||||||||||
| LPM | licensing project manager | |||||||||||||
| LPMA | loose-parts-monitor assembly | |||||||||||||
| LPMS | loose-parts monitoring system | |||||||||||||
| LPNGP | low-pressure noble gas processing | |||||||||||||
| LPOL | low-power operating license | |||||||||||||
| LPR | Lynchburg Pool Reactor | |||||||||||||
| LPRM | local power range monitor | low-power range monitor | ||||||||||||
| LPRS | low-pressure recirculation system | |||||||||||||
| LPSI | low-pressure safety injection | |||||||||||||
| LPSIP | low-pressure safety injection pump | |||||||||||||
| LPSP | low-power set point | |||||||||||||
| LPSW | low-pressure service water | |||||||||||||
| LPT | liquid penetrant testing | low-pressure turbine | ||||||||||||
| LPTF | low-power test facility | |||||||||||||
| LPTR | Livermore Pool Type Reactor | |||||||||||||
| LPZ | low-population zone | |||||||||||||
| LR | level regulator | load reject | load rejection | |||||||||||
| LRA | locked-rotor accident | |||||||||||||
| LRB | licensing review basis/bases | |||||||||||||
| LRC | level recorder controller | Lewis Research Center | local recovery center | |||||||||||
| LRED | licensing reportable event determination | |||||||||||||
| LRG | license review group | licensing review group | ||||||||||||
| LRIA | level removable instrument assembly | |||||||||||||
| LRL | Lawrence Radiation Laboratory | |||||||||||||
| LRM | lead reactor manufacturer | logarithmic radiation monitor | ||||||||||||
| LRP | large rotating plug | |||||||||||||
| LRPE | licensee regulatory performance evaluation | |||||||||||||
| LRRP | long-range research plan | |||||||||||||
| LRS | level recording switch | liquid radwaste system | ||||||||||||
| LRTS | liquid radwaste treatment system | |||||||||||||
| LRVOS | liner recombiner and vacuum outgassing system | |||||||||||||
| LRW | liquid radioactive waste | |||||||||||||
| LRX | large reactor critical experiment | |||||||||||||
| LS | level switch | lighting system | locked shut | |||||||||||
| LSA | low specific activity | |||||||||||||
| LSB | last-stage blade | |||||||||||||
| LSCS | LaSalle County Station | |||||||||||||
| LSDF | large sodium disposal facility | |||||||||||||
| LSDP | Lake Superior District Power Co. | |||||||||||||
| LSFT | logic system functional test or testing | |||||||||||||
| LSI | licensed supervising instructor | |||||||||||||
| LSNM | low strategic significance special nuclear material | |||||||||||||
| LSP | level set point | lower sequential permissive | ||||||||||||
| LSR | Lynchburg Source Reactor | |||||||||||||
| LSRO | limited senior reactor operator | |||||||||||||
| LSS | Licensing Support System | |||||||||||||
| LSSA | Licensing Support System Administrator, Office of (NRC) | |||||||||||||
| LSSARP | Licensing Support System Advisory Review Panel | |||||||||||||
| LSSC | less safety-significant component | |||||||||||||
| LSSP | latest scram set point | |||||||||||||
| LSSS | limiting safety system set point | limiting safety system setting | ||||||||||||
| LSTF | large-scale test facility | |||||||||||||
| LT | leak testing | level transmitter | ||||||||||||
| LTA | lead test assembly | less than adequate | low-temperature adsorber | |||||||||||
| LTBT | Limited Test Ban Treaty | |||||||||||||
| LTC | linear translation case | load tap changer | ||||||||||||
| LTD | letdown | |||||||||||||
| LTL | lot truck load | |||||||||||||
| LTM | long-term maintenance | low-trajectory missile | ||||||||||||
| LTMD | less than minimum detectable | |||||||||||||
| LTNGP | low-temperature noble gas process | |||||||||||||
| LTOP | low-temperature overpressure protection | |||||||||||||
| LTP | long-term program | |||||||||||||
| LTR | lattice test reactor | licensing technical review | Lockheed Training Reactor | |||||||||||
| LTS | License Tracking System | Licensing Tracking System | ||||||||||||
| LTSF | lid tank shielding facility | |||||||||||||
| LTSP | long-term seismic program | |||||||||||||
| LTV | large test vessel | |||||||||||||
| LUWAS | lowest unit with age significance | |||||||||||||
| LUXATOM | Syndicat Luxembourgeois pour l’Industrie Nucléaire (Luxembourg) | |||||||||||||
| LV | leaky valve | |||||||||||||
| LVDT | linear variable differential transducer | linear variable differential transformer | linear variable displacement transducer | linear voltage differential transformer | ||||||||||
| LWA | limited work authorization | |||||||||||||
| LWBR | light-water breeder reactor | |||||||||||||
| LWCHW | light-water-cooled, heavy-water-moderated reactor | |||||||||||||
| LWGR | light-water-cooled graphite-moderated reactor | |||||||||||||
| LWMS | liquid waste management system | |||||||||||||
| LWOP | leave without pay | |||||||||||||
| LWP | liquid waste processing | |||||||||||||
| LWPS | liquid waste processing system | |||||||||||||
| LWR | light-water reactor | |||||||||||||
| LWTS | laundry waste treatment system | |||||||||||||
| M/A | manual or automatic | |||||||||||||
| MAA | material access area | |||||||||||||
| MAAC | Mid-Atlantic Area Council | |||||||||||||
| MAAP | material access authorization program | modular accident analysis program | ||||||||||||
| MAC | maintenance action card | management advisory committee | Management Analysis Co. | material accounting | maximum allowable concentration | |||||||||
| MACCT | multiple assembly cooling cask test | |||||||||||||
| MAD | maintenance assembly-disassembly | |||||||||||||
| MAELU | Mutual Atomic Energy Liability Underwriters | |||||||||||||
| MAG | magnetics | |||||||||||||
| MAI | miscellaneous actuation instrumentation | |||||||||||||
| MAIN | Mid-American Interpool Network | |||||||||||||
| MAIT | matrix analysis of insider threat | |||||||||||||
| MAM | management and administration manual | |||||||||||||
| MAN | Maschinenfabrik Augsberg-Nürnberg, A.G. (Germany) | |||||||||||||
| MAP | maintenance action plan | maintenance assessment package | methodology assessment program | |||||||||||
| MAPI | Mitsubishi Atomic Power Industries, Inc. (Japan) | |||||||||||||
| MAPLHGR | maximum average planar linear heat-generation rate | maximum average planar linear heat-generation ratio | ||||||||||||
| MAR | maintenance action request | |||||||||||||
| MARAD | Maritime Administration | |||||||||||||
| MARCA | Mid-Continent Area Reliability Coordination Agreement | |||||||||||||
| MARCH | meltdown accident response characteristic | |||||||||||||
| MASE | microwave amplification by stimulated emission | |||||||||||||
| MAT | management advisory team | |||||||||||||
| MB | mixed bed | |||||||||||||
| MB-2 | Model Boiler-Two | |||||||||||||
| MBA | material balance area | |||||||||||||
| MBO | management by objective | |||||||||||||
| MBP | monobutyl phosphate | |||||||||||||
| Mbq | megabecquerel | |||||||||||||
| MBR | material balance report | |||||||||||||
| MC | main circulator | main condenser | major component | manual chapter (NRC) | metal clad | Mitsubishi Corporation | ||||||||
| MCA | material control and accountability | maximum credible accident | multichannel analyzer | |||||||||||
| MC&A | material control and accounting | |||||||||||||
| MCAP | Management Corrective Action Plan | |||||||||||||
| MCB | main control board | |||||||||||||
| MCC | Materials Characterization Center | motor control center | movement control center | |||||||||||
| MCCB | molded-case circuit breaker | |||||||||||||
| MCES | main condenser evacuation system | |||||||||||||
| MCET | materials, chemical, and environmental technology | |||||||||||||
| MCHFR | minimum critical heat flux rate | minimum critical heat flux ratio | ||||||||||||
| MCI | managed cost improvement | millicurie | ||||||||||||
| MCIG | miscellaneous control and instrumentation group | |||||||||||||
| MCIS | materials compatibility in sodium | |||||||||||||
| MCLAMS | measurement, control, LEID (limit of error of the inventory difference) and MUF (material unaccounted for) ID (inventory difference) simulation | |||||||||||||
| MCOV | maximum continuous operating voltage | |||||||||||||
| MCPR | maximum critical power ratio | minimum critical power ratio | ||||||||||||
| MCR | main control room | material certification report | ||||||||||||
| MCREC | main control room environmental control | |||||||||||||
| MCRH | main control room habitability | |||||||||||||
| MCRHS | main control room habitability system | |||||||||||||
| MCS | main circulator subsystem | master control station | Monte Carlo Sampling | |||||||||||
| MCSS | metallic core support structure | |||||||||||||
| MCV | movable closure valve | |||||||||||||
| MD | management directive | measured discard | ||||||||||||
| MDA | minimum detectable activity | |||||||||||||
| MDAFWP | motor-driven auxiliary feedwater pump | |||||||||||||
| MDB | master database | |||||||||||||
| MDC | maximum dependable capacity | minimum detectable concentration | moderator density coefficient | |||||||||||
| MDCT | mechanical draft cooling tower | |||||||||||||
| MDEFWP | motor-driven emergency feedwater pump | |||||||||||||
| MDEP | Maine Department of Environmental Protection | |||||||||||||
| MDF | mechanical design flow | |||||||||||||
| MDHR | mini-decay heat removal | |||||||||||||
| MDI | Many Diverse Interests, Inc. | |||||||||||||
| MDL | minimum detectable limit | |||||||||||||
| MDM | metal disintegration machining | modified diffusion method | ||||||||||||
| MDNBR | minimum departure from nucleate boiling ratio | |||||||||||||
| MDP | master decommissioning plan | |||||||||||||
| MDR | manufacturer’s date report | |||||||||||||
| MDS | megawatt demand setter | |||||||||||||
| MDU | motion detection unit | |||||||||||||
| ME | maintenance effectiveness | |||||||||||||
| M&E | material and equipment | |||||||||||||
| MEA | maintenance engineering analysis | Materials Engineering Associates | ||||||||||||
| MEAG | Metropolitan Electric Authority of Georgia | |||||||||||||
| MEC | Mid American Energy Co. | |||||||||||||
| MECAS | multienergy californium assay system | |||||||||||||
| MEED | Metropolitan Edison Co. | |||||||||||||
| MEHC | Mid American Energy Holdings Co. | |||||||||||||
| MEF | median energy of fission | |||||||||||||
| MEFV | maintenance equipment floor valve | |||||||||||||
| MEGAS | multienergy gamma assay system | |||||||||||||
| MEI | maintenance effectiveness indicator | maximally exposed individual | ||||||||||||
| MEIS | minimum electrical isolation scheme | |||||||||||||
| MEL | master equipment list | Mitsubishi Electric Corp. (Japan) | ||||||||||||
| MELB | moderate-energy line break | |||||||||||||
| MELC | moderate-energy line crack | |||||||||||||
| MEOD | maximum extended operating domain | |||||||||||||
| MEPNS | Ministry of Environmental Protection and Nuclear Safety (Ukraine) | |||||||||||||
| MEQ | mechanical equipment qualification | |||||||||||||
| MERIT | management evaluation and risk identification tree | |||||||||||||
| MERITS | methodically engineered, restructured, and improved technical specifications | |||||||||||||
| MERLIN | Medium-Energy, Light-Water-Moderated, Industrial Nuclear Reactor (United Kingdom) | |||||||||||||
| MES | maintenance engineering services | |||||||||||||
| MESA | multielement skew angle | |||||||||||||
| MESF | minimum engineered safety feature | |||||||||||||
| MESL | maximum emergency service load | |||||||||||||
| METAFRAM | Métallurgie Française des Poudres, S.A. (France) | |||||||||||||
| MEU | medium-enriched uranium | |||||||||||||
| MeV | million electron volts | |||||||||||||
| MEWS | Mixed Energy Waste Study | |||||||||||||
| MF | mound facility | |||||||||||||
| MFB | main feeder bus | |||||||||||||
| MFC | master flow controller | |||||||||||||
| MFCI | molten fuel coolant interaction | |||||||||||||
| MFCS | main feedwater control system | |||||||||||||
| MFI | minimum flow interlock | |||||||||||||
| MFIS | main feedwater isolation signal | |||||||||||||
| MFIV | main feedwater isolation valve | |||||||||||||
| MFL | main feedwater line | master fuse list | maximum foreseeable loss | |||||||||||
| MFLPD | maximum fraction of limiting power density | |||||||||||||
| MFP | main feed power | main feedwater pump | mixed fission product | |||||||||||
| MFPG | mixed fission products generator | |||||||||||||
| MFPT | main feedwater pump turbine | |||||||||||||
| MFPTC | main feed pump turbine condenser | |||||||||||||
| MFRV | main feedwater regulation valve | |||||||||||||
| MFS | main feedwater system | mobilization for survival | ||||||||||||
| MFT | multiprogramming with a fixed number of tasks | |||||||||||||
| MFTA | multiduct fuel test assembly | |||||||||||||
| MFV | main feedwater valve | maintenance floor valve | ||||||||||||
| MFW | main feedwater | |||||||||||||
| MFWCS | main feedwater and condensate system | |||||||||||||
| MFWLB | main feedwater line break | |||||||||||||
| MFWRV | main feedwater regulating valve | |||||||||||||
| MFWV | main feedwater valve | |||||||||||||
| MG | manual group | motor generator | ||||||||||||
| M/G | motor generator | |||||||||||||
| M-G | motor generator | |||||||||||||
| MGCR | maritime gas-cooled reactor | |||||||||||||
| MGCR-CX | maritime gas-cooled reactor–critical experiment | |||||||||||||
| MGDS | mined geologic disposal system | |||||||||||||
| MGEC | Madison Gas & Electric Co. | |||||||||||||
| MGVC | manual governing valve control | |||||||||||||
| MHA | maximum hypothetical accident | |||||||||||||
| MH-1A | Mobile High Power Plant No. 1A | |||||||||||||
| MHC | mechanical-hydraulic control | |||||||||||||
| MHD | magnetohydrodynamics | |||||||||||||
| MHDC | magnetohydrodynamic conversion | |||||||||||||
| MHFPR | maximum hypothetical fission-product release | |||||||||||||
| MHI | Mitsubishi Heavy Industries, Ltd. (Japan) | |||||||||||||
| MHNGS | Marble Hill Nuclear Generating Station | |||||||||||||
| MHP | material handling procedure | |||||||||||||
| MHTGR | modular high-temperature gas-cooled reactor | |||||||||||||
| MHTS | main heat transport system | |||||||||||||
| MI | manual individual | mineral insulated | ||||||||||||
| MIBK | methyl isobutyl ketone | |||||||||||||
| MIC | microbiologically induced corrosion | microbiologically influenced corrosion | ||||||||||||
| MICDS | movable in-core detector system | |||||||||||||
| MIDAS | meteorological information and dose acquisition system | meteorological information and dose assessment system | ||||||||||||
| MIDS | movable instrument drive system | |||||||||||||
| M&IE | meals and incidental expenses | |||||||||||||
| MIL | material identification list | material identification log | ||||||||||||
| MIMS | metal impact monitoring system | |||||||||||||
| MINET | momentum integral network | |||||||||||||
| MIP | maintenance improvement program | master inspection plan | ||||||||||||
| MIPS | master inspection planning system | |||||||||||||
| MIS | maintenance information system | management information system | ||||||||||||
| MIST | maximum isothermal system temperature | minor isotopes safeguards technique | multiloop integral system test | |||||||||||
| MIT | Massachusetts Institute of Technology | |||||||||||||
| MITI | Ministry of International Trade and Industry (Japan) | |||||||||||||
| MITR | Massachusetts Institute of Technology Reactor | |||||||||||||
| MKU | Mary Kathleen Uranium, Ltd. (Australia) | |||||||||||||
| ML | manufacturing license | |||||||||||||
| ML-1 | Mobile Low Power Plant No. 1 | |||||||||||||
| MLD | mean low-water datum/data | median lethal dose | ||||||||||||
| MLHGR | maximum linear heat generation rate | maximum linear heat generation ratio | ||||||||||||
| MLO | main lube oil | |||||||||||||
| MLP | main loop pump | |||||||||||||
| MLS | Medilab Select (Belgium) | multi-level secure | ||||||||||||
| MLSR | Monthly Letter Status Report | |||||||||||||
| MLSV | main loop shutoff valve | |||||||||||||
| MLW | mean low water | |||||||||||||
| MLWMS | miscellaneous liquid waste management system | |||||||||||||
| MM | mechanical maintenance | modified Mercalli | ||||||||||||
| MME | Mercantile Marine Engineering and Graving Docks Co., N.V. (Belgium) | |||||||||||||
| MMG | motor-motor generator | |||||||||||||
| MMI | man-machine interface | modified Mercalli intensity | ||||||||||||
| MMP | maintenance manual procedure | |||||||||||||
| MMPA | Magnetic Material Producers Association | |||||||||||||
| MMSA | man-machine systems analysis/analyses | |||||||||||||
| MMWEC | Massachusetts Municipal Wholesale Electric Co. | |||||||||||||
| MNCR | material nonconformance report | |||||||||||||
| MNGP | Monticello Nuclear Generating Plant | |||||||||||||
| MNP | maximum negative pressure | |||||||||||||
| MNPS | Millstone Nuclear Power Station | |||||||||||||
| MNS | McGuire Nuclear Station | |||||||||||||
| M&O | management and organizational | |||||||||||||
| MO | mixed oxide | modulate open | motor operator | |||||||||||
| MOA | memorandum/memoranda of agreement | |||||||||||||
| MOC | middle of cycle | minimum operable channel | ||||||||||||
| MOD | motor-operated disconnect | |||||||||||||
| MODE | maximum organ dose equivalent | |||||||||||||
| MODEM | modulator-demodulator | |||||||||||||
| MONAL | mobile nondestructive assay laboratory | |||||||||||||
| MOOS | maintenance out of service | |||||||||||||
| MOP | maintenance outline procedure | |||||||||||||
| MOR | monthly operating report | |||||||||||||
| MORT | management oversight risk tree | |||||||||||||
| MOTA | materials open test assembly | |||||||||||||
| MOU | memorandum/memoranda of understanding | |||||||||||||
| MOV | metal oxide varister | motor-operated valve | ||||||||||||
| MOVATS | motor-operated valve analysis and test system | |||||||||||||
| MOX | mixed oxide | |||||||||||||
| MOXF | mixed-oxide fuel | |||||||||||||
| MP | magnetic particle | maintenance procedure | Midland Plant | |||||||||||
| MPA | multiplant action | multiplant activity | ||||||||||||
| MPAI | maximum permissible annual intake | |||||||||||||
| MPBB | maximum permissible body burden | |||||||||||||
| MPC | maximum permissible concentration | Metals Properties Council | Montana Power Co. | multi-purpose canister | ||||||||||
| MPCA | maximum permissible concentration in air | |||||||||||||
| MPCW | maximum permissible concentration in water | |||||||||||||
| MPD | maximum permissible dose | |||||||||||||
| MPE | maximum permissible exposure | |||||||||||||
| MPFF | maintenance preventable functional failure | |||||||||||||
| MPL | master parts list | maximum permissible level | mechanical properties loop | |||||||||||
| MP&L | Mississippi Power & Light Co. | |||||||||||||
| MPO | manufacturing production order | |||||||||||||
| MPP | maximum positive pressure | |||||||||||||
| M&PP | materials and plant protection | |||||||||||||
| MPR | mechanical pressure regulator | |||||||||||||
| MPRE | medium-power reactor experiment | |||||||||||||
| MPRT | multipurpose rail transport | |||||||||||||
| MPS | manpower system | |||||||||||||
| mps | meter per second | |||||||||||||
| MPS | monitoring and protection system | multipurpose sampler | ||||||||||||
| MPSC | Maine Public Service Co. | |||||||||||||
| MPT | magnetic particle testing | minimum pressurization temperature | ||||||||||||
| MPX | multiplexer | |||||||||||||
| MQE | materials and qualifications engineering | mechanical quality engineering | ||||||||||||
| MQS | motion to quash subpoena | |||||||||||||
| MR | material requisition | monitoring report | ||||||||||||
| MRB | Management Review Board | |||||||||||||
| MRBI | maintenance rule baseline inspection | |||||||||||||
| MRBT | multirod burst test | |||||||||||||
| MRC | Medical Research Council (United Kingdom) | |||||||||||||
| MREM | millirem | |||||||||||||
| MRI | material receiving instruction | |||||||||||||
| MRMU | mobile radiological measuring unit | |||||||||||||
| MRO | medical review officer | |||||||||||||
| MRP | modification/rework package | |||||||||||||
| MRPC | motorized rotating pancake coil | |||||||||||||
| MRR | material receiving report | medical research reactor | ||||||||||||
| MRS | manipulator repair shop | manufacturer’s record sheet | monitored retrievable storage | |||||||||||
| MRSS | main and reheat steam system | |||||||||||||
| MS | main steam | manual sequential | margin of safety | milestone | ||||||||||
| M/S | maintenance/surveillance | |||||||||||||
| MSA | management self-assessment | material surveillance assembly | mechanical signature analysis/analyses | mines safety appliance | ||||||||||
| MSAR | mines safety appliance research | |||||||||||||
| MSB | main steamline break | multi-assembly sealed basket | ||||||||||||
| MSBE | molten salt breeder experiment | |||||||||||||
| MSBR | molten salt breeder reactor | |||||||||||||
| MSCA | mixed spectrum critical assembly | |||||||||||||
| MSCI | molten steel coolant interaction | |||||||||||||
| MSG | modular steam generator | |||||||||||||
| MSGTR | multiple steam generator tube rupture | |||||||||||||
| MSHA | Mine Safety and Health Administration | |||||||||||||
| MSICV | main steam isolation check valve | |||||||||||||
| MSIP | modified stabilization in place | |||||||||||||
| MSIS | main steam isolation signal | |||||||||||||
| MSIV | main steam isolation valve | |||||||||||||
| MSIVLCS | main steamline isolation valve leakage control system | |||||||||||||
| MSL | main steamline | maximum still-water level | mean sea level | |||||||||||
| MSLA | main steamline accident | |||||||||||||
| MSLB | main steamline break | |||||||||||||
| MSLD | mass spectrometer leak detector | |||||||||||||
| MSLI | main steamline isolation | |||||||||||||
| MSLIVSS | main steamline isolation valve sealing system | |||||||||||||
| MSLRDS | main steamline rupture detection system | |||||||||||||
| MSM | master/slave manipulator | modified source multiplication | ||||||||||||
| MSNM | special nuclear material of moderate strategic significance | |||||||||||||
| MSPB | Merit System Protection Board | |||||||||||||
| MSR | material status report | maximum steam rate | moisture separator reheater | molten salt reactor | ||||||||||
| MSRE | molten salt reactor experiment | |||||||||||||
| MSRP | Multiple System Responses Program | |||||||||||||
| MSRV | main steam relief valve | |||||||||||||
| MSS | main steam system | main support structure | management systems section | Manufacturers Standardization Society of the Valve and Fittings Industry | mixed spectrum superheater | modified scram system | ||||||||
| MSSC | more safety-significant component | |||||||||||||
| MSSCE | mixed spectrum superheater critical experiment | |||||||||||||
| MSSR | mixed spectrum superheat reactor | main steam safety relief (valve) | ||||||||||||
| MSSS | main steam supply system | main steam support structure | ||||||||||||
| MSSV | main steam safety valve | main steam shutoff valve | ||||||||||||
| MSV | mean square voltage | |||||||||||||
| MS&W | maintenance shop and warehouse | |||||||||||||
| MT | magnetic particle test | magnetic particle testing | material transfer | materials test | melt through | |||||||||
| MTBF | mean time between failures | |||||||||||||
| MTC | moderator temperature coefficient | multi-assembly transfer cask | ||||||||||||
| M&TE | measuring and test equipment | |||||||||||||
| MTER | multitest evaluation report | |||||||||||||
| MTF | mean time to failure | |||||||||||||
| MTG | main turbine generator | |||||||||||||
| MT/G | main turbine generator | |||||||||||||
| MTI | maintenance team inspection | mandatory team inspection | Mechanical Technology, Inc. | |||||||||||
| MTL | materials test loop | Mobiltherm light | ||||||||||||
| MTOS | magnetic tape operations system | |||||||||||||
| MTPF | maximum total peaking factor | |||||||||||||
| MTR | materials testing reactor | |||||||||||||
| MTS | module tracking system | |||||||||||||
| MTT | microwave theory and techniques | |||||||||||||
| MTTF | mean time to failure | |||||||||||||
| MTTR | mean time to repair | mean time to replacement | ||||||||||||
| MTU | metric ton of uranium | metric ton unit | module test unit | |||||||||||
| MU | makeup | |||||||||||||
| MUF | material unaccounted for | |||||||||||||
| MUG | MOV Users Group | |||||||||||||
| MU&P | makeup and purification | |||||||||||||
| MUR | management update and retrieval | mockup reactor | ||||||||||||
| MUSE | Musicians United for Safe Energy | |||||||||||||
| MUT | makeup tank | |||||||||||||
| MUTN | MOVATS Users Technical Notice | |||||||||||||
| MUX | multiplexer | |||||||||||||
| MVP | mechanical vacuum pump | |||||||||||||
| MVS | multiple virtual storage | |||||||||||||
| MVT | multiprogramming with a variable number of tasks | |||||||||||||
| MW | megawatt | |||||||||||||
| MWDC | multiple weld data card | |||||||||||||
| Mwe | megawatt electric | |||||||||||||
| MWHT | miscellaneous waste holdup tank | |||||||||||||
| MWO | maintenance work order | |||||||||||||
| MWS | makeup water system | |||||||||||||
| MWST | makeup water storage tank | miscellaneous waste storage tank | ||||||||||||
| Mwt | megawatt thermal | |||||||||||||
| MW-yr | megawatt-year | |||||||||||||
| MYAP | Maine Yankee Atomic Power Co. | |||||||||||||
| MYAPS | Maine Yankee Atomic Power Station | |||||||||||||
| MZFR | Mehrzweck Forschungsreaktor (Germany) | |||||||||||||
| NA | not applicable | not available | ||||||||||||
| N/A | not applicable | |||||||||||||
| NAA | neutron activation analysis/analyses | |||||||||||||
| NAB | nuclear assembly building | |||||||||||||
| NAC | national agency check | Nuclear Assurance Corporation | ||||||||||||
| NACE | National Association of Corrosion Engineers | |||||||||||||
| NAD | nuclear accident dosimetry | |||||||||||||
| NAEC | North Anna Environmental Coalition | |||||||||||||
| NAESCO | North Atlantic Energy Service Corp. | |||||||||||||
| NAFTA | North American Free Trade Agreement | |||||||||||||
| NAGRA | Nationale Genossenschaft für die Lagerung Radioaktiver Abfälle (Switzerland) | |||||||||||||
| NAI | sodium iodide | |||||||||||||
| NAIG | Nippon Atomic Industry Group Co., Ltd. (Japan) | |||||||||||||
| NAN | Nuclear Awareness Network | |||||||||||||
| NANT | National Academy for Nuclear Training | |||||||||||||
| NAPA | National Academy of Public Administration | |||||||||||||
| NAPCA | National Air Pollution Control Administration | |||||||||||||
| NAPS | North Anna Power Station | |||||||||||||
| NAPSIC | North American Power Systems Interconnection Committee | |||||||||||||
| NAPUS | nuclear auxiliary power unit system | |||||||||||||
| NARA | National Archives and Records Administration | |||||||||||||
| NARADCom | Natick Research and Development Command | |||||||||||||
| NARM | naturally occurring or accelerator-produced radioactive material | |||||||||||||
| NARUC | National Association of Regulatory Utility Commissioners | |||||||||||||
| NAS | National Academy of Sciences | nonreactor assessment staff | ||||||||||||
| NASA | National Aeronautics and Space Administration | |||||||||||||
| NASAP | Nonproliferation Alternative Systems Assessment Program | |||||||||||||
| NAS-NRC | National Academy of Sciences–National Research Council | |||||||||||||
| NASE | National Academies of Science | |||||||||||||
| NASUCA | National Association of State Utility Consumer Advocates | |||||||||||||
| NAWAS | national warning system | |||||||||||||
| NB | nuclear blank | nuclear boiler | ||||||||||||
| NBGEL | New Bedford Gas and Edison Light Co. | |||||||||||||
| NBL | New Brunswick Laboratory | |||||||||||||
| NBP | New Brunswick Power (Canada) | |||||||||||||
| NBR | nuclear boiler rated | |||||||||||||
| NBS | National Bureau of Standards (now National Institute of Standards and Technology) | |||||||||||||
| NBSR | National Bureau of Standards Reactor | |||||||||||||
| NC | neutron controller | normally closed | nuclear construction | |||||||||||
| NCA | neutron control assembly | |||||||||||||
| NCAI | National Congress of American Indians | |||||||||||||
| NCBR | near-commercial breeder reactor | |||||||||||||
| NCF | no containment failure | |||||||||||||
| NCIG | Nuclear Construction Issues Group (EPRI) | |||||||||||||
| NCP | network control program | |||||||||||||
| NCR | nonconformance report | nonconforming condition report | notification-of-change report | |||||||||||
| NCRERP | North Carolina Radiation Emergency Response Plan | |||||||||||||
| NCRP | National Council on Radiation Protection | |||||||||||||
| NCRP(M) | National Committee on Radiation Protection and Measurements | |||||||||||||
| NCRWS | National Campaign for Radioactive Waste Safety | |||||||||||||
| NCS | national communications system | nuclear criticality safety | ||||||||||||
| NCSA | National Center for Supercomputing Applications | |||||||||||||
| NCSAG | Nuclear Cross Section Advisory Group | |||||||||||||
| NCSCR | North Carolina State College Reactor | |||||||||||||
| NCSL | National Conference of State Legislatures | |||||||||||||
| NCSS | neutron control subsystem | |||||||||||||
| NCSUR | North Carolina State University Reactor | |||||||||||||
| NCV | non-cited violation | |||||||||||||
| NCVP | natural circulation verification program | |||||||||||||
| ND | negative declaration | normally deenergized | ||||||||||||
| NDA | no detectable activity | nondestructive analysis | nondestructive assay | |||||||||||
| NDC | nuclear data committee | |||||||||||||
| NDCT | natural draft cooling tower | |||||||||||||
| NDE | nondestructive examination | |||||||||||||
| NDHX | natural draft heat exchanger | |||||||||||||
| NDL | nuclear data link | |||||||||||||
| NDRC | National Defense Research Council | |||||||||||||
| NDT | nil ductility temperature | nil ductility transition | nondestructive testing | |||||||||||
| NDTT | nil ductility transition temperature | |||||||||||||
| NE | normally energized | nuclear engineering | ||||||||||||
| NEA | Northeast Energy Alliance | Nuclear Energy Agency (OECD) | Nuclear Engineering Associates | |||||||||||
| NEB | Nuclear Energy Board (Ireland) | |||||||||||||
| NEC | National Electrical Code | Nuclear Energy Center | ||||||||||||
| NECAP | Nutmeg Electric Companies Atomic Project | |||||||||||||
| NECNP | New England Coaliltion on Nuclear Pollution | |||||||||||||
| NECO | Nuclear Engineering Company | |||||||||||||
| NECSS | Nuclear Energy Center Site Survey | |||||||||||||
| NEDS | nuclear employee data system | |||||||||||||
| NEES | New England Electric System | |||||||||||||
| NEGEA | New England Gas and Electric Association | |||||||||||||
| NEI | Nuclear Energy Institute (formerly NUMARC and USCEA) | |||||||||||||
| NEIL | Nuclear Electric Insurance Limited | |||||||||||||
| NEJAC | National Environmental Justice Advisory Council | |||||||||||||
| NELIA | Nuclear Energy Liability Insurance Association | |||||||||||||
| NELPIA | Nuclear Energy Liability Property Insurance Association | |||||||||||||
| NEMA | National Electrical Manufacturers Association | |||||||||||||
| NENE | Northeast Nuclear Energy Co. | |||||||||||||
| NEO | nuclear engineering and operations | |||||||||||||
| NEP | New England Plant | |||||||||||||
| NEPA | National Environmental Policy Act | |||||||||||||
| NEPCO | New England Power Company | |||||||||||||
| NEPIA | Nuclear Energy Property Insurance Association | |||||||||||||
| NERA | National Economic Research Associates, Inc. | |||||||||||||
| NERC | National Electric Reliability Council | National Environment Resource Council (United Kingdom) | Nuclear Energy Research Centre (Belgium) | |||||||||||
| NERHL | Northeastern Radiological Health Laboratory | |||||||||||||
| NERP | nuclear experience review program | |||||||||||||
| NERV | nuclear emulsion recovery vehicle | |||||||||||||
| NERVA | nuclear engine for rocket vehicle application | |||||||||||||
| NESC | National Electric Safety Code | Nuclear Energy Software Center | ||||||||||||
| NESCWS | nonessential services chilled water system | |||||||||||||
| NESDIP | Nestor Shielding and Dosimetry Improvement Program | |||||||||||||
| NESF | normal engineered safety feature | |||||||||||||
| NESP | National Environmental Studies Project | |||||||||||||
| NEST | nuclear emergency search team | |||||||||||||
| NETR | Nuclear Engineering Test Reactor | |||||||||||||
| NEU | Northeastern Utilities (Company) | |||||||||||||
| NEUSSN | Northeastern U.S. Seismic Network | |||||||||||||
| NEUT | Northeast Utilities | |||||||||||||
| NEVP | Nevada Power Co. | |||||||||||||
| NEW | Nuclear Energy Women | |||||||||||||
| NEWS | Nuclear Engineering Workstation Simulator | |||||||||||||
| NEWSTAR | nuclear energy waste space transportation and removal | |||||||||||||
| NF | neutron flux | |||||||||||||
| NFC | no further consequences | |||||||||||||
| NFCA | nonfuel core array | |||||||||||||
| NFI | Nuclear Fuel Industries, Ltd. (Japan) | |||||||||||||
| NFPA | National Fire Protection Association | |||||||||||||
| NFRRC | nuclear fuel recovery and receiving center | |||||||||||||
| NFS | network file system | Nuclear Fuel Services Co. | ||||||||||||
| NFSA | new fuel storage area | |||||||||||||
| NG | nitroglycerin | noble gas | ||||||||||||
| NGA | Nationale Gesellschaft für Förderung der Industriellen Atomtechnik (Switzerland) | |||||||||||||
| NGE | North Georgia Electric Membership Corp. | |||||||||||||
| NGF | Natural Guard Fund | |||||||||||||
| NGN | Next Generation Network | |||||||||||||
| NGSF | noble gas storage facility | |||||||||||||
| NHPA | National Historic Preservation Act | |||||||||||||
| NHY | New Hampshire Yankee | |||||||||||||
| NI | never incorporated | nuclear instrument | nuclear instrumentation | nuclear island | ||||||||||
| NIAC | Nuclear Industry Assessment Committee | Nuclear Insurance Association of Canada | ||||||||||||
| NIC | Nuclear Industry Check Valve Group | Nuclear Industry Consortium (Belgium) | ||||||||||||
| NICWB | nuclear island cooling water building | |||||||||||||
| NIDA | National Institute on Drug Abuse | |||||||||||||
| NIH | National Institutes of Health (U.S. Public Health Service) | |||||||||||||
| NII | Nuclear Installations Inspectorate (United Kingdom) | |||||||||||||
| NIM | nuclear instrument module | |||||||||||||
| NiMo | Niagara Mohawk Power Corp. | |||||||||||||
| NIOBE | numerical integration of the Boltzmann equation | |||||||||||||
| NIOSH | National Institute for Occupational Safety and Health (U.S. Public Health Service) | |||||||||||||
| NIPA | notice of initiation of procurement action | |||||||||||||
| NIPS | Northern Indiana Public Service Co. | |||||||||||||
| NIRA | Nucleare Italiana Reattori Avanzati, SpA (Italy) | |||||||||||||
| NIRB | Nuclear Insurance Rating Bureau | |||||||||||||
| NIRL | negligible individual risk level | |||||||||||||
| NIRMA | Nuclear Information and Records Management Association, Inc. | |||||||||||||
| NIRNS | National Institute for Research in Nuclear Science (United Kingdom) | |||||||||||||
| NIRS | National Institute of Radiological Sciences (Japan) | Nuclear Information and Resource Service | ||||||||||||
| NIS | Network Information Service | Nevada Inspection Service | Newly Independent States | nuclear instrumentation system | ||||||||||
| NISCO | Nuclear Inspection Services Company | |||||||||||||
| NISP | National Industrial Security Program | |||||||||||||
| NISPOM | National Industrial Security Program Operating Manual | |||||||||||||
| NIST | National Institute of Standards and Technology (formerly National Bureau of Standards) | |||||||||||||
| NJBPU | New Jersey Board of Public Utilities | |||||||||||||
| NJOAL | New Jersey Office of Administrative Law | |||||||||||||
| NLI | National Lead Industries | Nuclear Industries, Inc. | ||||||||||||
| NMA | National Mining Association | |||||||||||||
| NMAC | Nuclear Maintenance Assistance Center (Electric Power Research Institute) | |||||||||||||
| NMCC | Nuclear Material Control Center (Japan) | |||||||||||||
| NMDB | nuclear maintenance database | |||||||||||||
| NMEC | Northern Michigan Electric Cooperative, Inc. | |||||||||||||
| NMED | nuclear material events database | |||||||||||||
| NMIS | nuclear materials information system | nuclear materials inventory system | ||||||||||||
| NMMSS | nuclear materials management and safeguards system | |||||||||||||
| NMP | national meter programming | Niagara Mohawk Power Corp. | ||||||||||||
| NMPNS | Nine Mile Point Nuclear Station | |||||||||||||
| NMRG | Nuclear Managers Review Group | |||||||||||||
| NMS | national measurement system | neutron monitoring system | ||||||||||||
| NMSS | Nuclear Material Safety and Safeguards, Office of (NRC) | |||||||||||||
| NMST | new materials system test | |||||||||||||
| NMT | nuclear medicine technologist | |||||||||||||
| NN | nearest neighbor | nearest neighboring | ||||||||||||
| NNC | National Nuclear Corporation, Ltd. (United Kingdom) | |||||||||||||
| NNCSC | National Neutron Cross Section Committee | |||||||||||||
| NNDC | National Nuclear Data Center | |||||||||||||
| NNEC | National Nuclear Energy Commission (Brazil) | |||||||||||||
| NNECO | Northeast Nuclear Energy Co. | |||||||||||||
| NNESCO | Northeast Nuclear Energy Services Co. | |||||||||||||
| NNI | nonnuclear instrumentation | |||||||||||||
| NNIS | nonnuclear instrumentation system | |||||||||||||
| NNPA | Nuclear Non-Proliferation Act of 1978 | |||||||||||||
| NNPS | Norco Nuclear Power Station | |||||||||||||
| NNS | nonnuclear safety | |||||||||||||
| NNSA | National Nuclear Safety Administration (China) | |||||||||||||
| NNSDD | Newport News Shipbuilding and Dry Dock Company | |||||||||||||
| NNTP | network news transfer protocol | |||||||||||||
| NNWSI | Nevada Nuclear Waste Storage Investigation | |||||||||||||
| NO | normally open | |||||||||||||
| NOAA | National Oceanic and Atmospheric Administration | |||||||||||||
| NOAC | Nuclear Operations Analysis Center | |||||||||||||
| NOD | notice of deviation | |||||||||||||
| NOED | notice of enforcement discretion | |||||||||||||
| NOI | notice of indication | |||||||||||||
| NOL | Naval Ordnance Laboratory | normal operating loss | ||||||||||||
| NON | notice of nonconformance | |||||||||||||
| NOP | normal operating procedure | |||||||||||||
| NORCUS | Northwest College and University Association for Science | |||||||||||||
| NORM | naturally occurring radioactive material | |||||||||||||
| NOS | not otherwise specified | |||||||||||||
| NOUE | notice of unusual event | notification of unusual event | ||||||||||||
| NOV | notice of violation | |||||||||||||
| NOWUS | normal operation with unscram | |||||||||||||
| NP | negative pressure | nuclear power | ||||||||||||
| NPA | nuclear plant analyzer | |||||||||||||
| NPAR | nuclear plant aging research | |||||||||||||
| NPC | Nuclear Power Co. | |||||||||||||
| NPCA | National Paint and Color Association | |||||||||||||
| NPCC | Northeast Power Coordinating Council | |||||||||||||
| NPD | national policy debate | Nuclear Power Demonstration (Canada) | ||||||||||||
| NPDB | nuclear plant data bank | |||||||||||||
| NPDES | National Pollutant Discharge Elimination System | |||||||||||||
| NPE | nuclear plant engineering | nuclear power experience | ||||||||||||
| NPEC | Nuclear Power Engineering Committee | |||||||||||||
| NPEP | Nuclear Plant Equipment Procurement Working Group | |||||||||||||
| NPF | nuclear power facility | |||||||||||||
| NPG | Nuclear Power Group, The (United Kingdom) | |||||||||||||
| NPGS | nuclear power generating station | |||||||||||||
| NPIS | nuclear plant island structure | |||||||||||||
| NPO | nuclear plant operator | |||||||||||||
| NPP | nuclear performance plan | nuclear power plant | ||||||||||||
| NPPD | Nebraska Public Power District | |||||||||||||
| NPR | National Performance Review | new production reactor | nonpower reactor | |||||||||||
| NPRCG | Nuclear Public Relations Contact Group (Italy) | |||||||||||||
| NPRDS | Nuclear Plant Reliability Data System (INPO) | |||||||||||||
| NPRF | Northrop Pulse Radiation Facility | |||||||||||||
| NPS | nominal pipe size | normal pressurizer spray | Nuclear Power Service (Westinghouse) | numerical plotting system | ||||||||||
| NPSH | net positive suction head | |||||||||||||
| NPSI | Nuclear Power Service Incorporated | |||||||||||||
| NPSRA | Nuclear-Powered Ship Research Association (Japan) | |||||||||||||
| NPSRS | nuclear power safety reporting system | |||||||||||||
| NPT | national pipe thread | Nonproliferation Treaty | ||||||||||||
| NPTF | nuclear proof test facility | |||||||||||||
| NPZ | nickel-plated Zircaloy 4 | |||||||||||||
| NQAA | Nuclear Quality Assurance Agency | |||||||||||||
| NQAM | nuclear quality assurance manual | |||||||||||||
| NQAP | nuclear quality assurance plan | |||||||||||||
| NR | narrow resonance | nonconformance report | ||||||||||||
| NRA | Nuclear Regulatory Administration | Nuclear Regulatory Authority (Ukraine) | ||||||||||||
| NRAP | naturally radioactive product | |||||||||||||
| NRB | nonconformance review board | |||||||||||||
| NRC | National Research Council | Nuclear Regulatory Commission, U.S. | ||||||||||||
| NRCAR | NRC Acquisition Regulation | |||||||||||||
| NRCC | National Research Council (Canada) | Northern Rockies Cancer Center | ||||||||||||
| NRDC | National Resources Defense Council | |||||||||||||
| NRDS | Nuclear Rocket Development Station | |||||||||||||
| NRE | nuclear research emulsion | |||||||||||||
| NREP | National Reliability Evaluation Program | neutron resonance escape probability | ||||||||||||
| NRHE | nonregenerative heat exchanger | |||||||||||||
| NRHX | nonregenerative heat exchanger | |||||||||||||
| NRIM | narrow resonance infinite mass | |||||||||||||
| NRL | Naval Research Laboratory (United Kingdom) | |||||||||||||
| NRPB | National Radiological Protection Board | |||||||||||||
| NRR | Naval Research Reactor | Nuclear Reactor Regulation, Office of (NRC) | ||||||||||||
| NRRO | nuclear radiation-resistant oil | |||||||||||||
| NRT | national response team | |||||||||||||
| NRTS | National Reactor Test Station | |||||||||||||
| NRU | National Reactor Universal | |||||||||||||
| NRW | nonradioactive waste | |||||||||||||
| NRWV | nonradioactive waste vent | |||||||||||||
| NRX | National Research Reactor | nuclear engine reactor experiment | ||||||||||||
| NS | near side | normally shut | nuclear ship | |||||||||||
| NSA | National Security Agency | Nuclear Safety Agency | Nuclear Science Abstracts | Nuclear Systems Associates | ||||||||||
| NSAC | Nuclear Safety Analysis Center | |||||||||||||
| NSC | National Security Council | net-section collapse | net-suction collapse | Nuclear Safety Concern | ||||||||||
| NSCR | Nuclear Science Center Reactor | |||||||||||||
| NSCW | nuclear service cooling water | |||||||||||||
| NSDM | national security decision memorandum/memoranda | |||||||||||||
| NSEP | National Security Emergency Preparedness | |||||||||||||
| NSF | National Sanitation Foundation | National Science Foundation | Nuclear Science Foundation | |||||||||||
| NSFP | nonsodium fire protection | |||||||||||||
| NSHC | no-significant-hazards consideration | |||||||||||||
| NSHE | no-significant-hazards evaluation | |||||||||||||
| NSI | national security information | |||||||||||||
| NSIAC | Nuclear Strategic Issues Advisory Committee (NEI) | |||||||||||||
| NSIC | Nuclear Safety Information Center | |||||||||||||
| NSIP | Nuclear Safe Issues Program | |||||||||||||
| NSLD | No Seismic Limit Duration | |||||||||||||
| NSMH | Nuclear Systems Material Handbook | |||||||||||||
| NSO | nuclear station operator | |||||||||||||
| NSOA | nuclear safety operational analysis/analyses | |||||||||||||
| NSP | Northern States Power Co. | |||||||||||||
| NSPP | nuclear safety pilot plant | |||||||||||||
| NSPS | nuclear safety protection system | |||||||||||||
| NSQAC | Nuclear Supplier Quality Assurance Committee | |||||||||||||
| NSTC | National Science and Technology Center | |||||||||||||
| NSR | neutron source reactor | non-safety-related | ||||||||||||
| NSRA | Nuclear Safety Research Association (Japan) | |||||||||||||
| NSRB | Nuclear Safety Review Board | |||||||||||||
| NSRG | Nuclear Safety Review Group | |||||||||||||
| NSRL | Nuclear Structure Research Laboratory | |||||||||||||
| NSRR | nuclear safety research reactor | |||||||||||||
| NSRRC | Nuclear Safety Research Review Committee | |||||||||||||
| NSRS | nuclear safety review staff | |||||||||||||
| NSS | nuclear steam system | |||||||||||||
| NSSM | national security study memorandum/memoranda | |||||||||||||
| NSSS | nuclear steam supply system | nuclear steam system supplier | ||||||||||||
| NSSSS | nuclear steam supply shutoff system | |||||||||||||
| NSTF | Nuclear Science and Technology Facility | |||||||||||||
| NSUM | neutron shuffler uranium monitor | |||||||||||||
| NSW | nuclear service water | |||||||||||||
| NSWMA | National Solid Waste Management Association | |||||||||||||
| NSWS | nuclear service water system | |||||||||||||
| NT | neutron transmitter | |||||||||||||
| NTCP | near-term construction permit | |||||||||||||
| NTE | not to exceed | |||||||||||||
| NTEU | National Treasury Employees Union | |||||||||||||
| NTF | nuclear test facility | |||||||||||||
| NTIS | National Technical Information Service | |||||||||||||
| NTOL | near-term operating license | |||||||||||||
| NTP | National Toxicology Program | normal temperature and pressure | nuclear test plant | |||||||||||
| NTR | nuclear test reactor | nuclear testing reactor | ||||||||||||
| NTS | Nevada Test Site | |||||||||||||
| NTSB | National Transportation Safety Board | |||||||||||||
| NU | Northeast Utilities | |||||||||||||
| NUBARG | Nuclear Utility Backfitting and Reform Group | |||||||||||||
| NUCLENOR | Centrales Nucleares del Norte, S.A. (Spain) | |||||||||||||
| NUCLIT | Nucleare Italiana (Italy) | |||||||||||||
| NUCPR | nuclear procedure requirement | |||||||||||||
| NUDE | nuclear data evaluation | |||||||||||||
| NUDOCS | Nuclear Documents System | |||||||||||||
| NUDOCS/AD | Nuclear Documents System/Advanced Design | |||||||||||||
| NUFCOR | Nuclear Fuels Corp. of South Africa | |||||||||||||
| NUGEQ | Nuclear Utility Group on Equipment Qualification | |||||||||||||
| NUGSBO | Nuclear Utility Group on Station Blackout | |||||||||||||
| NUMAC | Nuclear Management and Control | |||||||||||||
| NUMARC | Nuclear Management and Resources Council (now NEI) | |||||||||||||
| NUMEC | Nuclear Materials and Equipment Corp. | |||||||||||||
| NUMS | nuclear materials security | |||||||||||||
| NUPEC | Nuclear Power Engineering Test Center | |||||||||||||
| NUPIC | Nuclear Procurement Issues Committee | |||||||||||||
| NUPLEX | Nuclear Utilities Plant Life Extension Steering Committee | |||||||||||||
| NURE | national uranium resource evaluation | |||||||||||||
| NUREG | NRC technical report designation (Nuclear Regulatory Commission) | |||||||||||||
| NUREG/BR | NUREG brochure | |||||||||||||
| NUREG/CP | NUREG conference proceedings | |||||||||||||
| NUREG/CR | NUREG contractor report | |||||||||||||
| NUREG/GR | NUREG grantee report | |||||||||||||
| NUREG/IA | NUREG international agreement report | |||||||||||||
| NUS | Nuclear Utilities Service | |||||||||||||
| NUSCO | Northeast Utilities Service Company | |||||||||||||
| NUSMG | Nuclear Utilities Software Management Group | |||||||||||||
| NUSS | nuclear safety standard (International Atomic Energy Agency) | |||||||||||||
| NUTAC | Nuclear Utility Task Action Committee | |||||||||||||
| NVH | nitrogen vent header | |||||||||||||
| NVLAP | National Voluntary Laboratory Accreditation Program | |||||||||||||
| NW | normal waste | |||||||||||||
| NWC | normal water chemistry | |||||||||||||
| NWCC | neutron well coincidence counter | |||||||||||||
| NWL | normal water leg | |||||||||||||
| NWP | Nuclear Waste Project | |||||||||||||
| NWPA | Nuclear Waste Policy Act of 1982 | |||||||||||||
| NWPAA | Nuclear Waste Policy Amendments Act of 1987 | |||||||||||||
| NWR | nuclear work request | |||||||||||||
| NWS | National Weather Service | |||||||||||||
| NWTRB | Nuclear Waste Technical Review Board | |||||||||||||
| NYD | New York mean tide data | |||||||||||||
| NYGAS | New York Gas Group | |||||||||||||
| NYPA | New York Power Authority | |||||||||||||
| NYPIRG | New York Public Interest Research Group | |||||||||||||
| NYSADA | New York State Atomic and Space Development Authority | |||||||||||||
| NYSEG | New York State Electric & Gas Corp. | |||||||||||||
| NYSERDA | New York State Energy Research and Development Authority | |||||||||||||
| OA | oil to air | operating authorization | ||||||||||||
| OAB | Országos Atomenergia John Urban: Bizottság (Hungary) | |||||||||||||
| OAC | office allegation coordinator | |||||||||||||
| OAD | operational availability date | |||||||||||||
| OAI | outside air intake | |||||||||||||
| OAR | operational assessment and readiness | |||||||||||||
| OARP | operator accelerated retraining program | |||||||||||||
| OAS | Organization of Agreement States | |||||||||||||
| OATP | operational acceptance test procedure | |||||||||||||
| OBA | operating-basis accident | |||||||||||||
| OBE | Office of Business Economics | operating-basis earthquake | ||||||||||||
| OBERS | Office of Business Economics Research Service | |||||||||||||
| OBRA-90 | Omnibus Budget Reconciliation Act of 1990 | |||||||||||||
| OC | Office of the Controller (NRC) | operating curve | operations center | |||||||||||
| OCA | Office of Congressional Affairs (NRC) | overcooling accident | ||||||||||||
| OCAA | Office of Commission Appellate Adjudication (NRC) | |||||||||||||
| OCB | oil collection basin | oil-operated circuit breaker | ||||||||||||
| OCDE | Organisation de Coopération et de Développement Economiques (France) | |||||||||||||
| OCDRE | Organic-Cooled Deuterium Reactor Experiment (Canada) | |||||||||||||
| OCFO | Office of the Chief Financial Officer | |||||||||||||
| OCI | oxide control and indication | |||||||||||||
| OCIMS | Operations Center Information Management System | |||||||||||||
| OCIO | Office of the Chief Information Officer (NRC) | |||||||||||||
| OCLC | Online Computer Library Center, Inc. | |||||||||||||
| OCM | Office of the Commission (NRC) | |||||||||||||
| OCNPP | Oyster Creek Nuclear Power Plant | |||||||||||||
| OCR | operational control record | |||||||||||||
| OCRE | Ohio Citizens for Responsible Energy | |||||||||||||
| OCRWM | Office of Civilian Radioactive Waste Management | |||||||||||||
| OD | outside diameter | |||||||||||||
| ODCM | offsite dose calculation manual | |||||||||||||
| ODCWT | outer-diameter creeping wave technique | |||||||||||||
| ODF | onsite decontamination facility | |||||||||||||
| ODSCC | outer-diameter stress-corrosion cracking | outside-diameter stress-corrosion cracking | ||||||||||||
| OE | oceanic engineering | Office of Enforcement (NRC) | operating engineer | operating experience | ||||||||||
| OEC | Ohio Edison Co. | |||||||||||||
| OECD | Organization for Economic Cooperation and Development | |||||||||||||
| OEDO | Office of the Executive Director for Operations (NRC) | |||||||||||||
| OEM | original equipment manufacturer | |||||||||||||
| OER | operating event report | |||||||||||||
| OERTS | operational events report tracking system | |||||||||||||
| OFA | optimized fuel assembly | |||||||||||||
| OFPP | Office of Federal Procurement Policy | |||||||||||||
| OFZS | Österreichisches Forschungszentrum Siebersdorf, G.m.b.H. (Austria) | |||||||||||||
| OG | off-gas | owners group | ||||||||||||
| OGC | Office of the General Counsel (NRC) | |||||||||||||
| OGE | Office of Government Ethics | |||||||||||||
| OGI | off-gas isolation | |||||||||||||
| OGR | ORNL (Oak Ridge National Laboratory) Graphite Reactor | |||||||||||||
| OGS | off-gas system | |||||||||||||
| OGST | overthread guide sleeve tool | |||||||||||||
| OGTB | off-gas treatment building | |||||||||||||
| OH | Ontario Hydro (Canada) | |||||||||||||
| OHER | Office of Health and Environmental Research (U.S. Department of Energy) | |||||||||||||
| OHLH | overhead heavy-load handling | |||||||||||||
| OHRS | overflow heat removal system | |||||||||||||
| OHST | overhead storage tank | |||||||||||||
| OHTCS | outer head temperature control system | |||||||||||||
| OI | Office of Investigations (NRC) | operating instruction | optical isolator | outstanding item | ||||||||||
| OIC | online instrument and control | |||||||||||||
| OIG | Office of the Inspector General (NRC) | |||||||||||||
| OIP | Office of International Programs (NRC) | operating internal pressure | ||||||||||||
| OJT | on-the-job training | |||||||||||||
| OL | operating license | operating limit | operator license | |||||||||||
| OLIP | online instrument package | |||||||||||||
| OLMCPR | operating limit maximum critical power ratio | |||||||||||||
| OLTS | operator licensing tracking system | |||||||||||||
| OM | operations manager | oxide melt | ||||||||||||
| O/M | oxygen to metal | |||||||||||||
| O&M | operation and maintenance | Operations and Maintenance Committee of ASME | ||||||||||||
| OMB | Office of Management and Budget | |||||||||||||
| OMCA | organic-moderated critical assembly | |||||||||||||
| OMM | operation and maintenance manual | |||||||||||||
| OMR | organic-moderated reactor | |||||||||||||
| O&MR | operation and maintenance report | operations and maintenance reminder | ||||||||||||
| OMRCA | organic-moderated reactor critical assembly | |||||||||||||
| OMRE | organic-moderated reactor experiment | |||||||||||||
| OMRR | Ordnance Material Research Reactor | |||||||||||||
| ONCA | outer neutron control assembly | |||||||||||||
| ONE | Operations Notification and Evaluation (form) | |||||||||||||
| ONS | Oconee Nuclear Station | |||||||||||||
| OOS | out of sequence | out of service | ||||||||||||
| OOSC | onsite operations support center | |||||||||||||
| OOSS | operations officer support system | |||||||||||||
| OP | Office of Personnel (NRC) | oxygen pressure | ||||||||||||
| OPA | Office of Public Affairs (NRC) | operational performance assessment | ||||||||||||
| OPAC | online payment and collection | |||||||||||||
| OPCTR | Operations Center | |||||||||||||
| OPDRV | operation with a potential for draining the reactor vessel | |||||||||||||
| OPEC | Organization of Petroleum Exporting Countries | |||||||||||||
| OPEN | Organisation des Producteurs d’Energie Nucléaire (France) | |||||||||||||
| OPERA | out-of-pile expulsion and reentry apparatus | |||||||||||||
| OPF | Official Personnel File | |||||||||||||
| OPFM | outlet plenum feature model | |||||||||||||
| OPL | Omega Point Laboratories | |||||||||||||
| OPM | Office of Personnel Management | |||||||||||||
| OPPD | Omaha Public Power District | |||||||||||||
| OPR | offsite procurement request | open pool reactor | ||||||||||||
| OPS | Offshore Power Systems | operational protection system | overpressure protection system | overpressurization protection system | ||||||||||
| OPST | out-of-pile systems test | |||||||||||||
| OPT | optimization | |||||||||||||
| OPX | off-premise extension | |||||||||||||
| OpyC | outer pyrolytic carbon | |||||||||||||
| OQA | operations quality assurance | |||||||||||||
| OQAP | operational quality assurance plan | |||||||||||||
| OR | onsite representative | operating reactor | ||||||||||||
| ORA | orifice rod assembly | |||||||||||||
| O-RAP | operational reliability assurance program | |||||||||||||
| ORAT | operational readiness assessment team | |||||||||||||
| ORAU | Oak Ridge Associated Universities | |||||||||||||
| ORB | outside reactor building | |||||||||||||
| ORC | online reactivity computer | operational review committee | operations review committee | |||||||||||
| ORE | occupational radiation exposure | |||||||||||||
| ORFM | outlet region feature model | |||||||||||||
| ORGDP | Oak Ridge Gaseous Diffusion Plant | |||||||||||||
| ORIC | Oak Ridge Isochronous Cyclotron | |||||||||||||
| ORISE | Oak Ridge Institute for Science and Education | |||||||||||||
| ORLA | operating reactor licensing action | |||||||||||||
| ORNL | Oak Ridge National Laboratory | |||||||||||||
| ORO | offsite response organization | |||||||||||||
| ORR | operational readiness review | |||||||||||||
| ORRR | Oak Ridge Research Reactor | |||||||||||||
| ORRT | operations readiness review team | |||||||||||||
| ORSORT | Oak Ridge School of Reactor Technology | |||||||||||||
| ORU | Orange and Rockland Utilities, Inc. | |||||||||||||
| OS | operating system | |||||||||||||
| OSART | operational safety assessment review team | |||||||||||||
| OSC | Office of Special Counsel | Oncology Services Corporation | operational support center | |||||||||||
| OSG | operations support group | |||||||||||||
| OSHA | Occupational Safety and Health Act | Occupational Safety and Health Administration (U.S. Department of Labor) | ||||||||||||
| OSI | open systems interconnection | |||||||||||||
| OSIP | operational support information program | |||||||||||||
| OSM | optical storage media | |||||||||||||
| OSP | Office of State Programs (NRC) | operational surveillance program | ||||||||||||
| OSRC | Offsite Review Committee | |||||||||||||
| OSRE | Operational Safeguards Response Evaluation | operational security response effectiveness | ||||||||||||
| OSS | operational storage site | |||||||||||||
| OST | Office of Science and Technology | |||||||||||||
| OSTI | operational safety team inspection | |||||||||||||
| OSTR | Oregon State University TRIGA Reactor | |||||||||||||
| OSU | Oregon State University | |||||||||||||
| OSUR | Ohio State University Reactor | |||||||||||||
| OSVS | Outlier Seismic Verification Sheet | |||||||||||||
| OT | operating temperature | operational technology | ||||||||||||
| OTA | Office of Technology Assessment | open test assembly | ||||||||||||
| OTC | once-through cooling | |||||||||||||
| OTIS | once-through integral system | |||||||||||||
| OTM | overspeed trip mechanism | |||||||||||||
| OTR | organic test reactor | |||||||||||||
| OTSG | once-through steam generator | |||||||||||||
| OTSR | once-through superheat reactor | |||||||||||||
| OTTS | operations training and technical services | |||||||||||||
| OUO | official use only | |||||||||||||
| OWCP | Office of Workers’ Compensation Programs | |||||||||||||
| OWFN | One White Flint North | |||||||||||||
| OWP | operations work procedure | |||||||||||||
| OWR | Omega West Reactor | |||||||||||||
| OWRR | Office of Water Resources Research | |||||||||||||
| OZD | Offshore Zone of Deformation | |||||||||||||
| PA | performance assessment | personnel area | pressure alarm | Privacy Act | protected area | public address | purge alarm | |||||||
| PAA | primary auxiliary area | |||||||||||||
| PAB | preliminary as built | primary auxiliary building | ||||||||||||
| PABX | private automatic branch exchange | |||||||||||||
| PAC | Pilgrim Area Collaborative | protection auxiliary cabinet | public affairs coordinator | |||||||||||
| PACC | protected air-cooled condenser | |||||||||||||
| PACE | plant acquisition and construction equipment | |||||||||||||
| PACP | Pacific Power Co. | |||||||||||||
| PACV | postaccident containment venting | |||||||||||||
| PAD | performance analysis and design | |||||||||||||
| PADS | Personnel Access Data System | plant alarm and display system | ||||||||||||
| PAEC | Pakistan Atomic Energy Commission | Philippine Atomic Energy Commission | ||||||||||||
| PAG | protective action guideline | |||||||||||||
| PAHL | pressure alarm, high limit | |||||||||||||
| PAHR | postaccident heat removal | |||||||||||||
| PAIC | public address intercommunications system | |||||||||||||
| PAIP | public affairs and information program | |||||||||||||
| PAL | permissive action link | personnel airlock | programmer assistance and liaison | prototype application loop | ||||||||||
| PAM | postaccident monitoring | |||||||||||||
| PAMI | postaccident monitoring instrumentation | |||||||||||||
| PAMS | postaccident monitoring system | |||||||||||||
| PANE | People Against Nuclear Energy | |||||||||||||
| PANL | plant annunciators list | |||||||||||||
| PAO | postulated abnormal occurrence | Privacy Act Officer | public affairs officer | |||||||||||
| PAP | plant administrative procedure | power ascension program | ||||||||||||
| PAPAS | pin and pellet assay system | |||||||||||||
| PAPUC | Pennsylvania Public Utility Commission | |||||||||||||
| PAR | passive autocatalytic recombiner | Pennsylvania Advanced Reactor | performance autocatalytic report | Pool Atómico Português (Portugal) | protective action recommendation | purchasing approval request | ||||||||
| PARD | postaccident radioactivity depletion | |||||||||||||
| PARR | Pakistan Atomic Research Reactor | postaccident radioactivity removal | ||||||||||||
| PARV | power-activated relief valve | power-actuated relief valve | ||||||||||||
| PAS | Privacy Act statement | probabilistic analysis staff | ||||||||||||
| PASNY | Power Authority of the State of New York | |||||||||||||
| PASS | postaccident sampling system | |||||||||||||
| PAT | performance appraisal team | plutonium air transportable | preplaced aggregate technique | |||||||||||
| PATP | power ascension testing program | power ascension test program | ||||||||||||
| PATRAM | packaging and transportation of radioactive material | |||||||||||||
| PAX | private automatic exchange | |||||||||||||
| PB | pipe break | proportional band | ||||||||||||
| PBAPS | Peach Bottom Atomic Power Station | |||||||||||||
| PBE | prompt burst excursion | prompt burst experiment | ||||||||||||
| PBF | power burst facility | |||||||||||||
| PBI | performance-based instruction | |||||||||||||
| PBNP | Point Beach Nuclear Plant | |||||||||||||
| PBR | pebble bed reactor | Plum Brook Reactor | ||||||||||||
| PBRE | pebble bed reactor experiment | |||||||||||||
| PBRF | Plum Brook Reactor Facility | |||||||||||||
| PBS | pressure boundary subsystem | project breakdown structure | ||||||||||||
| PBTF | pump bearing test facility | |||||||||||||
| PBX | private branch exchange | |||||||||||||
| PC | personal computer | plant computer | polar crane | pressure controller | process computer | professional communication | protective clothing | protective coating | ||||||
| PCA | pool critical assembly | primary control assembly | primary coolant activity | |||||||||||
| PCAM | punched card accounting machine | |||||||||||||
| PCAS | primary central alarm station | |||||||||||||
| PCB | power circuit breaker | printed circuit board | ||||||||||||
| PC&BS | project controls and budget services | |||||||||||||
| PCC | plutonium concentrator concentrate | primary component cooling | process chemistry cell | |||||||||||
| PCCGC | primary containment combustible gas control | |||||||||||||
| PCCS | passive containment cooling system | |||||||||||||
| PCCV | precracked Charpy V-notch | |||||||||||||
| PCD | plutonium concentrator distillate | power control device | ||||||||||||
| PCDC | plutonium canister decontamination cell | |||||||||||||
| PCDIS | plant control, data, and instrumentation system | |||||||||||||
| PCETF | power conversion equipment test facility | |||||||||||||
| PCHRS | passive containment heat removal system | primary containment hydrogen recombiner system | ||||||||||||
| PCI | pellet/cladding interaction | personnel contamination incident | Prestressed Concrete Institute | primary containment isolation | ||||||||||
| PCIE | President’s Council on Integrity and Efficiency | |||||||||||||
| PCIL | plant computer input list | |||||||||||||
| PCIOMR | preconditioning interim operating management recommendation | |||||||||||||
| PCIS | primary containment isolation system | |||||||||||||
| PCIV | primary containment isolation valve | |||||||||||||
| PCL | permissible contamination limit | |||||||||||||
| PCLDI | prototype closed-loop development installation | |||||||||||||
| PCLS | prototype closed-loop system | |||||||||||||
| PCLT | prototype closed-loop test | |||||||||||||
| PCM | pending contractual matter | power cooling mismatch | ||||||||||||
| PCMI | pellet/cladding mechanical interaction | |||||||||||||
| PCN | procedure change notice | |||||||||||||
| PCP | post-construction permit | primary coolant pump | process control program | program control procedure | ||||||||||
| PCPS | pool cooling and purification system | |||||||||||||
| PCPV | primary containment purge valve | |||||||||||||
| PCR | plant change request | procedure change request | protective coating report | |||||||||||
| PCRB | personnel and control room building | |||||||||||||
| PCRDL | primary control rod driveline | |||||||||||||
| PCRDM | primary control rod drive mechanism | |||||||||||||
| PCRM | primary certified reference material | |||||||||||||
| PCRS | primary control rod system | |||||||||||||
| PCRV | prestressed concrete reactor vessel | |||||||||||||
| PCS | passive containment system | plant computer system | plant control system | power conversion system | pressure control system | primary coolant system | process computer system | process control sheet | ||||||
| PCSG | Pipe Crack Study Group | |||||||||||||
| PCT | peak centerline temperature | peak cladding temperature | pellet/cladding temperature | |||||||||||
| PCTF | plant component test facility | |||||||||||||
| PCTR | physical constant test reactor | |||||||||||||
| PCV | pressure control valve | pressurizer control valve | ||||||||||||
| PD | population density | population distribution | project director | pump discharge | ||||||||||
| PDA | predocketed application | preliminary design acceptance | preliminary design analysis | preliminary design approval | preliminary design assessment | preliminary design authorization | ||||||||
| PDAS | plant data acquisition system | |||||||||||||
| PDB | plant damage bin | |||||||||||||
| PDC | predocketed construction | preliminary design criterion/criteria | principal design criterion/criteria | |||||||||||
| PDCO | plant design control office | |||||||||||||
| PDD | Presidential Decision Directive | projected decision date | prospective decision date | |||||||||||
| PDES | preliminary draft environmental statement | |||||||||||||
| plant design factor | probability density function | project design flood | ||||||||||||
| PDH&DS | plant data handling and display system | |||||||||||||
| PDHS | plutonium decontamination and hot shop | |||||||||||||
| PDI | Performance Demonstration Initiative | |||||||||||||
| PDIL | power-dependent insertion limit | |||||||||||||
| PDL | power distribution limit | |||||||||||||
| PDMS | postdefueling monitored storage | |||||||||||||
| PDP | positive displacement pump | Process Development Pile | project definition phase | |||||||||||
| PDR | preliminary design report | pressurized deuterium reactor | public document room | |||||||||||
| PDRP | program data requirement plan | |||||||||||||
| PDS | plant damage state | plant data system | power distribution system | predocketed special | project decision schedule | project descriptive summary | ||||||||
| PDT | performance discharge test | |||||||||||||
| PDTS | permanently defueled technical specification | |||||||||||||
| PE | power engineering | project engineer | ||||||||||||
| PEAP | procurement engineering assessment plan | |||||||||||||
| PECO | Philadelphia Electric Co. | |||||||||||||
| PEDS | protective equipment decontamination section | |||||||||||||
| PEF | potential enforcement finding | |||||||||||||
| PEIS | programmatic environmental impact statement | |||||||||||||
| PEL | power electronics | |||||||||||||
| PEMA | Pennsylvania Emergency Management Agency | |||||||||||||
| PENELEC | Pennsylvania Electric Company | |||||||||||||
| PEO | patrol emergency officer | plant equipment operator | ||||||||||||
| PEP | performance enhancement program | |||||||||||||
| PEPCO | Potomac Electric Power Co. | |||||||||||||
| PEPR | precision encoder and pattern recognition | |||||||||||||
| PER | problem event report | procurement evaluation request | ||||||||||||
| PERMS | process and effluent radiological monitoring system | |||||||||||||
| PERMSS | process and effluent radiological monitoring and sampling system | |||||||||||||
| PERT | program evaluation and review technique | program evaluation report technique | ||||||||||||
| PET | performance evaluation team | permanent equipment transfer | ||||||||||||
| PETA | plutonium equipment transfer area | |||||||||||||
| PETN | pentaerythritol tetranitrate | |||||||||||||
| PETS | procedure for evaluating technical specifications | |||||||||||||
| PETTE | post-emergency tabletop exercise | |||||||||||||
| PEWS | plutonium equipment warm shop | |||||||||||||
| PF | partition factor | prefilter | Progressive Foundation | proposed finding | protection factor | purge fan | ||||||||
| PFCS | primary flow control system | |||||||||||||
| PFD | process flow diagram | |||||||||||||
| PFDAS | plant fire detection and alarm system | |||||||||||||
| PFE | plenum fill experiment | |||||||||||||
| PFES | proposed final environmental statement | |||||||||||||
| PFG | paper flow group | piping and filter gallery | ||||||||||||
| PFPCDS | plant fire protection carbon dioxide subsystem | |||||||||||||
| PFPHS | plant fire protection Halon subsystem | |||||||||||||
| PFPS | plant fire protection system | |||||||||||||
| PFPWS | plant fire protection water subsystem | |||||||||||||
| PFR | Prototype Fast Reactor (United Kingdom) | |||||||||||||
| PFS | peripheral fixed shim | private fuel storage | ||||||||||||
| PFSF | private fuel storage facility | |||||||||||||
| PG | particulate and gas | |||||||||||||
| PGA | peak ground acceleration | |||||||||||||
| PGCC | power generation control complex | |||||||||||||
| P&GD | policy and guidance directive | |||||||||||||
| PGDS | pressurized gas distribution system | |||||||||||||
| PG&E | Pacific Gas & Electric Co. | |||||||||||||
| PGG | power generation group | |||||||||||||
| PGP | procedures generation package | |||||||||||||
| PGQ | potentially generic question | |||||||||||||
| PHA | pulse-height analyzer | |||||||||||||
| PHERMEX | pulsed high-energy radiographic machine-emitted x-ray | |||||||||||||
| PHF | plug-handling fixture | |||||||||||||
| PHGA | peak horizontal ground acceleration | |||||||||||||
| PHR | process heat reactor | |||||||||||||
| PHS | Public Health Service | |||||||||||||
| PHSPS | preservation, handling, storage, packaging, and shipping | |||||||||||||
| PHTS | primary heat transport system | |||||||||||||
| PHWR | pressurized heavy-water-moderated and -cooled reactor | pressurized heavy-water reactor | ||||||||||||
| PI | performance indicator | physical inventory | plasticity index | position indication | pressure indicator | process instrumentation | proportional integral | purge isolation | ||||||
| P&I | piping and instrumentation | |||||||||||||
| PIA | pressure indicator alarm | |||||||||||||
| PIC | pressure-indicating controller | pressurized ion chamber | public information center | |||||||||||
| PICAN | Prairie Island Coalition Against Nuclear Storage | |||||||||||||
| PID | partial initial decision | piping and instrumentation diagram | ||||||||||||
| P&ID | piping and instrumentation diagram | |||||||||||||
| PID | position indication device | project identification | proportional integral derivative | |||||||||||
| P&ID | piping and instrumentation diagram | piping and instrumentation drawing | process and instrumentation diagram | |||||||||||
| PIDS | project identification summary | |||||||||||||
| PIE | postirradiation examination | postirradiation experiment | ||||||||||||
| PIF | pool irradiation facility | problem identification form | pressure-injected footing | |||||||||||
| PIL | Plant Issues List (now the Plant Issues Matrix) | |||||||||||||
| PIM | Plant Issues Matrix (formerly the Plant Issues List) | |||||||||||||
| PIMS | pooled inventory management system | |||||||||||||
| PIN | piping interference notification | potential interference notification | ||||||||||||
| PING | particulate, iodine, and noble gas | |||||||||||||
| PINGP | Prairie Island Nuclear Generating Plant | |||||||||||||
| PINSTECH | Pakistan Institute of Nuclear Science and Technology | |||||||||||||
| PIO | public information officer | |||||||||||||
| PIOTA | postirradiation open test assembly | proximity-instrumented open test assembly | ||||||||||||
| PIP | Performance Indicator Program | performance improvement plan | performance improvement program | position indication probe | Probabilistic Risk Assessment (PRA) Implementation Plan | problem investigation plan | prototypic inlet piping | |||||||
| PIPPAP | pile for producing power and plutonium | |||||||||||||
| PIR | Petrolite Irradiation Reactor | plant internal report | problem identification report | problem investigation report | ||||||||||
| PIRG | Public Interest Research Group | |||||||||||||
| PIRR | pipe inspection round robin | |||||||||||||
| PIRT | phenomena identification and ranking table | |||||||||||||
| PIS | pressure-indicating switch | process instrumentation system | ||||||||||||
| PISA | Project Integrated Safety Assessment | |||||||||||||
| PISC | Program for the Inspection of Steel Components | |||||||||||||
| PIV | pressure-indicating valve | pressure isolation valve | ||||||||||||
| PIXIE | proton-induced x-ray emission | |||||||||||||
| PL | panel left | piping load | plastic limit | public law | ||||||||||
| PLATR | Pawling lattice test rig | |||||||||||||
| PLBR | prototype large breeder reactor | |||||||||||||
| PLC | power-line carrier | |||||||||||||
| PLCEA | part-length control element assembly | |||||||||||||
| PLCEDM | part-length control element drive mechanism | |||||||||||||
| PLEX | plant life extension | |||||||||||||
| PLOCAP | post-loss-of-coolant-accident protection | |||||||||||||
| PLR | policy and labor relations | |||||||||||||
| PLS | precautions, limitations, and set points | |||||||||||||
| PLT | Princeton Large Torus | |||||||||||||
| PM | photomultiplier | pressure multiplier | preventive maintenance | program manager | project manager | protective measure | ||||||||
| PMA | personnel management analyst | plastic moderated assembly | ||||||||||||
| PMC | programmable machine controller | Project Management Corporation | protective measures coordinator | |||||||||||
| PME | process and manufacturing engineering | |||||||||||||
| PMF | probable maximum flood | |||||||||||||
| PMH | probable maximum hurricane | |||||||||||||
| PMI | plant manager instruction | |||||||||||||
| PMIS | plant monitoring and information system | precision mechanisms in sodium | ||||||||||||
| PML | probable maximum loss | |||||||||||||
| PMM | pedestal-mounted manipulator | |||||||||||||
| PMNP | platform-mounted nuclear plant | |||||||||||||
| PMOG | plutonium maintenance and operating gallery | |||||||||||||
| PMP | preoperational monitoring program | preventive maintenance procedure | probable maximum precipitation | program manual procedure | ||||||||||
| PMR | plant modification request | project manager report | ||||||||||||
| PMS | performance measurement system | plant monitoring system | primary makeup system | probable maximum surge | program management staff | |||||||||
| PMT | photomultiplier tube | postmaintenance testing | ||||||||||||
| PMU | plant makeup | |||||||||||||
| PMW | probable maximum wind | |||||||||||||
| PMWP | probable maximum winter precipitation | |||||||||||||
| PMY | professional man-year | |||||||||||||
| PN | plant normal | preliminary notification | ||||||||||||
| PNA | pulsed neutron activation | |||||||||||||
| PNE | peaceful nuclear explosion | |||||||||||||
| PNET | Peaceful Nuclear Explosion Treaty | |||||||||||||
| PNL | Pacific Northwest Laboratory | |||||||||||||
| PNNL | Pacific Northwest National Laboratory | |||||||||||||
| PNO | preliminary notification of occurrence | |||||||||||||
| PNPP | Palisades Nuclear Power Plant | Perry Nuclear Power Plant | ||||||||||||
| PNR | Pittsburgh Naval Reactors Office | |||||||||||||
| PNS | preliminary notification of safeguard | |||||||||||||
| PNSRC | plant nuclear safety review committee | |||||||||||||
| PNWL | Pacific Northwest Laboratory | |||||||||||||
| PO | project officer | purchase order | ||||||||||||
| POA | provisional operating authorization | |||||||||||||
| POAH | point of adding heat | |||||||||||||
| POD | point of discharge | probability of detection | PWR (pressurized-water reactor) oxide decontamination | |||||||||||
| PODCI | probability of detection and correct interpretation | |||||||||||||
| POF | probability of failure | |||||||||||||
| POG | piping and operating gallery | |||||||||||||
| POGE | Portland General Electric Co. | |||||||||||||
| POGO | Project on Government Oversight | |||||||||||||
| POIS | prototype online instrument system | |||||||||||||
| POL | possession-only license | provisional operating license | ||||||||||||
| POM | position modulator | |||||||||||||
| POP | peak overpressure | proof of principle | ||||||||||||
| POPR | prototype organic power reactor | |||||||||||||
| POPS | pressurizer overpressure protection system | |||||||||||||
| POQAP | plant operational quality assurance procedure | |||||||||||||
| POR | plant operations review | plutonium organic recycle | ||||||||||||
| PORACC | principle of radiation and contamination control | |||||||||||||
| PORC | plant operations review committee | |||||||||||||
| PORV | pilot-operated relief valve | power-operated relief valve | ||||||||||||
| POS | plant operating system | plant operational state | point of sale | |||||||||||
| POSA | preliminary operating safety analysis/analyses | |||||||||||||
| POTC | Power Operations Training Center | |||||||||||||
| PP | primary pressure | |||||||||||||
| PPA | plutonium preparation area | power plant attendant | Princeton-Pennsylvania Proton Accelerator | probabilistic performance assessment | ||||||||||
| PPC | Pennsylvania Power Co. | plutonium process cell | plutonium product cell | pore pressure cell | ||||||||||
| PPDD | preliminary project design description | |||||||||||||
| PPDI | plant process display instrumentation | |||||||||||||
| PPDIL | pre-power-dependent insertion limit | |||||||||||||
| PPE | personnel program effectiveness | |||||||||||||
| PPFR | plutonium product filter room | |||||||||||||
| PPG | policy and planning guidance | |||||||||||||
| PPH | primary pump house | |||||||||||||
| PPIS | plant protection and instrumentation system | |||||||||||||
| PP&L | Pennsylvania Power & Light Co. | |||||||||||||
| PPL | Plasma Physics Laboratory | plutonium product loadout | priority placement list | |||||||||||
| ppm | part per million | |||||||||||||
| PPM | procedure preparation manual | |||||||||||||
| PPMIP | plant performance and management improvement program | |||||||||||||
| PPNM | physical protection of nuclear materials | |||||||||||||
| PPP | point-to-point protocol | portable plotting package | ||||||||||||
| PPPG | policy, planning, and program guidance | |||||||||||||
| PPR | plant performance review | |||||||||||||
| PPS | plant protection system | plant protective system | plutonium product storage | primary power system | ||||||||||
| pps | pulse per second | |||||||||||||
| PPSAS | program planning and status assessment system | |||||||||||||
| PPSP | power plant siting program | |||||||||||||
| PPSPS | plutonium product shipping preparation station | |||||||||||||
| PPSV | plutonium product storage vault | |||||||||||||
| PQAD | plant quality assurance director | |||||||||||||
| PQAM | project quality assurance manager | |||||||||||||
| PQAP | project quality assurance plan | |||||||||||||
| PQR | procedure qualification record | |||||||||||||
| PR | Philippine Reactor | plant recovery | power range | press release | pressure recorder | procurement request | proposed rule | |||||||
| PRA | Paperwork Reduction Act of 1995 | plutonium recycle acid | probabilistic risk analysis/analyses | probabilistic risk assessment | ||||||||||
| PRAF | probabilistic risk assessment fundamentals | |||||||||||||
| PRATTP | probabilistic risk assessment technology transfer program | |||||||||||||
| PRB | plant review board | procedure review board | ||||||||||||
| PRBSG | pseudo-random binary sequence generator | |||||||||||||
| PRC | Planning Research Corp. | plutonium rework cell | pressure recorder controller | |||||||||||
| PRCF | plutonium recycle critical facility | |||||||||||||
| PRD | potentially reportable deficiency | |||||||||||||
| PRDC | Power Reactor Development Co. | |||||||||||||
| PRE | processing refabrication experiment | |||||||||||||
| PREACS | penetration room exhaust air cleanup system | pump room exhaust air cleanup system | ||||||||||||
| PRF | penetration room filtration | |||||||||||||
| PRG | procedure review group | |||||||||||||
| PRHR | passive residual heat removal | |||||||||||||
| PRISIM | plant risk status information management | |||||||||||||
| PRISM | power reactor inherently safe module | |||||||||||||
| PRL | postulated rupture location | |||||||||||||
| PRM | personal radiation monitor | petition for rulemaking | power range monitor | process radiation monitor | proposal for rulemaking | |||||||||
| PRMS | process radiation monitoring system | |||||||||||||
| PRNC | Puerto Rico Nuclear Center | |||||||||||||
| PROM | programmable read-only memory | |||||||||||||
| PROS | Professional Reactor Operator Society | |||||||||||||
| PRR | Pawling Research Reactor | Philippines Research Reactor | pressure rise rate | Puerto Rico Reactor | ||||||||||
| PRRWS | public risk reduction worksheet | |||||||||||||
| PRS | pressure response spectrum/spectra | process radiation sampler | ||||||||||||
| PRSC | plutonium rework sample cell | |||||||||||||
| PRT | pressurized relief tank | prompt relief trip | ||||||||||||
| PRTR | plutonium recycle test reactor | |||||||||||||
| PRTS | pressurizer relief tank system | |||||||||||||
| PRV | pressure relief valve | |||||||||||||
| PRVS | penetration room ventilation system | |||||||||||||
| PRWRA | Puerto Rico Water Resources Authority | |||||||||||||
| PS | Pilgrim Station | policy statement | power supply | pressure switch | pressurizer surge | |||||||||
| PSA | personnel and service area | plant-specific action | probabilistic safety analysis/analyses | probabilistic safety assessment | ||||||||||
| PSAR | preliminary safety analysis report | |||||||||||||
| PSB | personnel services building | plant service building | ||||||||||||
| PSC | plant safety committee | plutonium stripping concentrate | Public Service Commission | Public Service Co. of Colorado | ||||||||||
| PSCD | plutonium stripping concentration distillate | |||||||||||||
| PSCS | plant supervisory control subsystem | |||||||||||||
| PSD | power spectral density | power spectrum density | ||||||||||||
| PSDAR | post-shutdown decommissioning activities report | |||||||||||||
| PSDD | preliminary system design description | |||||||||||||
| PSDF | power spectrum density function | |||||||||||||
| PSE | pressurized subcritical experiment | |||||||||||||
| PSE&C | power supply engineering and construction | |||||||||||||
| PSE&G | Public Service Electric & Gas Co. | |||||||||||||
| PSER | preapplication safety evaluation report | |||||||||||||
| PSF | performance shaping factor | personnel security file | plutonium stripper feed | poolside facility | ||||||||||
| PSH | pressure switch, high | |||||||||||||
| PSHA | probabilistic seismic hazard assessment | |||||||||||||
| PSI | preservice inspection | prioritization of safety issues | ||||||||||||
| PSID | preliminary safety information document | |||||||||||||
| PSIN | Public Service Co. of Indiana, Inc. | |||||||||||||
| PSMD | Public Service of Maryland | |||||||||||||
| PSMS | plant safety monitoring system | |||||||||||||
| PSNH | Public Service Co. of New Hampshire | |||||||||||||
| PSNM | Public Service Co. of New Mexico | |||||||||||||
| PSNP | Pebble Springs Nuclear Plant | |||||||||||||
| PSOK | Public Service Co. of Oklahoma | |||||||||||||
| PSP | physical security plan | primary sodium pump | ||||||||||||
| PSPGV | primary sodium pump guard vessel | |||||||||||||
| PSPL | Puget Sound Power and Light Co. | |||||||||||||
| PSQ | personnel security questionnaire | |||||||||||||
| PSR | Pennsylvania State University Research Reactor | peripheral shim rod | permanent side reflector | plant status report | primary system relief | procurement status report | ||||||||
| PSR&D | primary sodium removal and decontamination | |||||||||||||
| PSRM | post-scram reactivity monitor | |||||||||||||
| PSS | primary sampling system | probabilistic safety study | process sampling system | |||||||||||
| PSSA | preclosure systems safety analysis/analyses | |||||||||||||
| PSSAR | preliminary standard safety analysis report | |||||||||||||
| PSSP | primary sodium sampling package | |||||||||||||
| PSSPS | primary sodium storage and processing system | |||||||||||||
| PST | pressure suppression tank | primary surge tank | ||||||||||||
| PSTF | pressure suppression test facility | proximity sensor test facility | pump seal test facility | |||||||||||
| PSTG | plant-specific technical guidelines | |||||||||||||
| PSU | Publication Sales Unit | |||||||||||||
| PSUR | Pennsylvania State University Reactor | |||||||||||||
| PSV | pressurizer safety valve | |||||||||||||
| PSW | plant service water | |||||||||||||
| PSWG | plant-specific writers guide | |||||||||||||
| PSWS | potable and sanitary water system | |||||||||||||
| PT | penetrant test | penetrant testing | periodic test | periodic testing | phototransistor | pool temperature | preoperational test | preoperational testing | pressure and temperature | pressure transmitter | ||||
| P/T | pressure and temperature | |||||||||||||
| PTC | passive thermal control | post-turnover change | ||||||||||||
| PTE | part-time equivalent | physics test exception | ||||||||||||
| PTFG | Probabilistic Risk Assessment (PRA) Training Focus Group | |||||||||||||
| PTI | pipe test insert | plugging temperature indicator | ||||||||||||
| PTL | Pittsburgh Testing Laboratory | |||||||||||||
| PTM | plant temporary modification | |||||||||||||
| PTP | peak to peak | preoperational test program | proximity test plug | |||||||||||
| PTR | performance trend report | pool test reactor | pool training reactor | pressure tube reactor | programmer trouble report | proof test reactor | ||||||||
| PTS | pressurized thermal shock | |||||||||||||
| PTSE | pressurized thermal shock experiment | |||||||||||||
| PTSF | pressurized thermal shock facility | |||||||||||||
| PT/SP | pressure tube-to-spool piece | |||||||||||||
| PTSR | pressure tube superheat reactor | |||||||||||||
| PTSTF | pressurized thermal shock test facility | |||||||||||||
| PUA | plant-unique analysis/analyses | |||||||||||||
| PUAAG | plant-unique analysis-applications guide | |||||||||||||
| Pub. | L.Public Law | |||||||||||||
| PUC | Public Utility Commission | |||||||||||||
| PUD | paired uranium detectors | public utility district | ||||||||||||
| PULSTAR | pulsed training assembled reactor | |||||||||||||
| PUP | peak underpressure | plutonium utilization program | ||||||||||||
| PUR | Purdue University Reactor | |||||||||||||
| PURPA | Public Utilities Regulatory Policy Act of 1978 | |||||||||||||
| PUSPATI | Pusat Penyelidikan Atom Tun Ismail (Malaysia) | |||||||||||||
| PV | photovoltaic | pressure valve | pressure vessel | |||||||||||
| PVC | polyvinyl chloride | |||||||||||||
| PVHA | probabilistic volcanic hazard assessment | |||||||||||||
| PVLC | penetration valve leakage control | |||||||||||||
| PVNGS | Palo Verde Nuclear Generating Station | |||||||||||||
| PVORT | pump and valve operability review team | |||||||||||||
| PVRC | Pressure Vessel Research Committee | |||||||||||||
| PVS | plant vent stack | pressure vessel simulation | ||||||||||||
| PVTI | piping and valve test insert | |||||||||||||
| PW | potable water | |||||||||||||
| P&W | Pratt and Whitney | |||||||||||||
| PWG | principal working group (NEA) | |||||||||||||
| PWHA | plutonium waste-handling area | |||||||||||||
| PWHT | postweld heat treatment | |||||||||||||
| PWR | pipe whip restraint | pressurized-water reactor | ||||||||||||
| PWROG | Pressurized-Water Reactor Owners Group | |||||||||||||
| PWSCC | primary water stress-corrosion cracking | |||||||||||||
| PWST | protected water storage tank | |||||||||||||
| PyC | pyrolytic carbon | |||||||||||||
| PZR | pressurizer | |||||||||||||
| PZR | LCSpressurizer level control system | PCSpressurizer pressure control system | ||||||||||||
| QA | quality assurance | |||||||||||||
| QAA | quality assurance audit | |||||||||||||
| QAC | quality assurance checklist | quality assurance criterion/criteria | ||||||||||||
| QAI | quality assurance instruction | |||||||||||||
| QAIP | quality assurance inspection procedure | |||||||||||||
| QAIRG | quality assurance installation review group | |||||||||||||
| QAM | quality assurance manual | |||||||||||||
| QA&O | quality assurance and operations | |||||||||||||
| QAP | quality assurance procedure | quality assurance program | ||||||||||||
| QAPI | quality assurance program index | |||||||||||||
| QAPP | quality assurance program plan | |||||||||||||
| QA/QC | quality assurance/quality control | |||||||||||||
| QAR | quality assurance requirement | quality assurance representative | ||||||||||||
| QC | quality control | |||||||||||||
| QCI | quality control instruction | |||||||||||||
| QCIP | quality control inspection procedure | |||||||||||||
| QCIR | quality control inspection report | |||||||||||||
| QCP | quality control procedure | |||||||||||||
| QCS | Quad-Cities Station | |||||||||||||
| QDO | quantitative design objective | |||||||||||||
| QDPS | qualified display processing system | |||||||||||||
| QE | quality engineer | |||||||||||||
| QF | quality factor | quality form | ||||||||||||
| QHO | qualitative health objective | quantitative health objective | ||||||||||||
| QHR | quality history record | |||||||||||||
| QIT | quality improvement team | |||||||||||||
| QLR | quick-look report | |||||||||||||
| QMP | qualification maintenance program | quality management program | ||||||||||||
| QO | quick opening | |||||||||||||
| QOBV | quick-opening blowdown valve | |||||||||||||
| QPM | quality program manager | |||||||||||||
| QPT | quadrant power tilt | |||||||||||||
| QPTR | quadrant power tilt ratio | |||||||||||||
| QR | quality revalidation | |||||||||||||
| QS | quench spray | |||||||||||||
| QSC | quality systems certificate | |||||||||||||
| QSP | quality systems program | |||||||||||||
| QSPDS | qualified safety parameter display system | |||||||||||||
| QSR | quarterly statistical report | |||||||||||||
| QSTF | quarter-scale test facility | |||||||||||||
| QTC | Quality Technology Co. | |||||||||||||
| QTP | quality test plan | |||||||||||||
| QV | quality verification | |||||||||||||
| QVFI | quality verification functional inspection | |||||||||||||
| QVI | quality verification inspection | |||||||||||||
| RA | reduction of area | |||||||||||||
| RA | regional administrator | Robotics and Automation Council | ||||||||||||
| R/A | reliability/availability | |||||||||||||
| RAB | reactor auxiliary building | |||||||||||||
| RABNVS | reactor auxiliary building normal ventilation system | |||||||||||||
| RABSRVS | reactor auxiliary building switchgear room ventilation system | |||||||||||||
| RABV | reflood assist bypass valve | |||||||||||||
| RAC | radiological assessment coordinator | regional assistance committee | report of abnormal condition | |||||||||||
| RACES | Radio Amateur Civil Emergency Service | |||||||||||||
| RACS | rod action control system | |||||||||||||
| rad | radiation absorbed dose | |||||||||||||
| RAD | rapid access data | |||||||||||||
| RADCON | radiologic control | |||||||||||||
| RADS | radiation and dosimetry service | |||||||||||||
| RAI | request for additional information | |||||||||||||
| RAIP | requester’s approval in principle | |||||||||||||
| RAM | radioactive material | random access memory | reliability, availability, and maintainability | |||||||||||
| RAMS | regulatory activities manpower system | |||||||||||||
| RANNP | Research Applied to National Needs Program | |||||||||||||
| RAOC | relaxed axial offset control | |||||||||||||
| RAP | radiological assistance plan | reliability assurance plan | remedial action program | restart action plan | ||||||||||
| RAPS | radioactive argon processing system | |||||||||||||
| RAPTUS | rapid thorium-uranium system | |||||||||||||
| RAREF | radiation and repair engineering facility | |||||||||||||
| RARP | reliability assessment research program | |||||||||||||
| RAS | reactor analysis and safety | recirculation actuation signal | remote acquisition station | |||||||||||
| RASCAL | Radiological Assessment System for Consequence Analysis | |||||||||||||
| RAT | radiological assessment team | radiological assistance team | reserve auxiliary transformer | |||||||||||
| RATI | readiness assessment team inspection | restart assessment team inspection | ||||||||||||
| RAW | risk assessment worth | |||||||||||||
| RB | reactor building | |||||||||||||
| RBA | radial blanket assembly | |||||||||||||
| RBAL | reprocessing building analytical laboratory | |||||||||||||
| RBC | reactor building cooling | |||||||||||||
| RBCCW | reactor building closed-cooling water | |||||||||||||
| RBCLCW | reactor building closed-loop cooling water | |||||||||||||
| RBCLCWS | reactor building closed-loop cooling water system | |||||||||||||
| RBCR | reprocessing building control room | |||||||||||||
| RBCS | reactor building cooling system | |||||||||||||
| RBCU | reactor building cooling unit | |||||||||||||
| RBCW | reactor building cooling water | |||||||||||||
| RBE | relative biological effectiveness | |||||||||||||
| RBEDT | reactor building equipment drain tank | |||||||||||||
| RBESI | reactor building exhaust system isolation | |||||||||||||
| RBFC | reactor building fan cooler | |||||||||||||
| RBHS | reactor building heating system | |||||||||||||
| RBM | rod-block monitor | |||||||||||||
| RBOF | receiving basin for offsite fuel | |||||||||||||
| RBP | reactor building protection | |||||||||||||
| RBPVS | reactor building purge ventilation system | |||||||||||||
| RBS | reactor building spray | River Bend Station | ||||||||||||
| RBSI | reactor building spray injection | |||||||||||||
| RBSR | reactor building spray recirculation | reactor building spreading room | reprocessing building spreading room | |||||||||||
| RBTL | reactor building truck lock | |||||||||||||
| RBVI | reactor building ventilation isolation | |||||||||||||
| RBVPRM | reactor building vent process radiation monitor | |||||||||||||
| RC | reactor cavity | reactor coolant | recording controller | rigid confinement | ||||||||||
| RCA | Radiation Control Agency | radiological controlled area | reactor coolant activity | root cause analysis | ||||||||||
| RCAP | root cause analysis program | |||||||||||||
| RCB | reactor containment building | |||||||||||||
| RCBHT | reactor coolant bleed holdup tank | |||||||||||||
| RCBT | reactor coolant bleed tank | |||||||||||||
| RCC | Radiochemical Centre Ltd. (U.K.) | reactor closed-cooling | rod cluster control | |||||||||||
| RCCA | rod cluster control assembly | |||||||||||||
| RCCS | reactor cavity cooling system | |||||||||||||
| RCDT | reactor coolant drain tank | |||||||||||||
| RCE | reactor compatibility experiment | |||||||||||||
| RCEP | Radiological Contingency and Emergency Plan | |||||||||||||
| RCFC | reactor containment fan cooler | |||||||||||||
| RCG | radioactivity concentration guide | recommended concentration guide | ||||||||||||
| RCGM | reactor cover gas monitor | |||||||||||||
| RCIC | reactor core isolation coolant | reactor core isolation cooling | ||||||||||||
| RCICS | reactor core isolation cooling system | |||||||||||||
| RCIS | rod control and information system | |||||||||||||
| RCL | reactor coolant loop | |||||||||||||
| RCLC | reactor coolant letdown cooler | |||||||||||||
| RCM | reliability-centered maintenance | Response Coordination Manual | ||||||||||||
| RCMU | reactor coolant makeup | |||||||||||||
| RCN | Reactor Centrum Nederland (Netherlands) | |||||||||||||
| RCP | radiological control program | reactor characterization program | reactor coolant pump | |||||||||||
| RCPB | reactor coolant pressure boundary | |||||||||||||
| RCPS | reactor coolant pump system | |||||||||||||
| RCRA | Resources Conservation and Recovery Act | |||||||||||||
| RCS | reactor coolant system | |||||||||||||
| R&CS | radiological and chemical support | |||||||||||||
| RCSI | reactor coolant system integrity | |||||||||||||
| RCSIL | rapid communication service information letter | |||||||||||||
| RCSS | reactor core subsystem | |||||||||||||
| RCT | response coordination team | rework/completion tag | ||||||||||||
| RC&T | radiation control and test | |||||||||||||
| RCTS | reactor coolant treatment system | |||||||||||||
| RCTWS | railroad car and truck wash station | |||||||||||||
| RCV | radiation control valve | |||||||||||||
| RCW | raw cooling water | reactor cooling water | recirculating cooling water | |||||||||||
| RD | random driver | receipt day | requirements document | restricted data | ||||||||||
| R&D | research and development | |||||||||||||
| RDA | rod drop accident | |||||||||||||
| RDAT | remote data acquisition terminal | |||||||||||||
| RDAU | remote data acquisition unit | |||||||||||||
| RDDM | reactor deck development mockup | |||||||||||||
| RDH | radioactive drain header | |||||||||||||
| RDO | regional duty officer | |||||||||||||
| RDOS | real-time disk operating system | |||||||||||||
| RDP | reactor development program | |||||||||||||
| RDS | reactor depressurization system | |||||||||||||
| RDSD | reliability design support document | |||||||||||||
| RDT | reactor development and technology | reactor drain tank | ||||||||||||
| RE | radiation equipment | rare earth | right end | |||||||||||
| REA | radiologic engineering assessment | recycle acid | rod ejection accident | Rural Electrification Administration | ||||||||||
| REAC | Radiological Emergency Assistance Center (Oak Ridge, Tennessee) | |||||||||||||
| REBA | relativistic electron beam accelerator | |||||||||||||
| REC | radiant energy conversion | |||||||||||||
| RECC | radiological effluent control commitment | |||||||||||||
| RECHAR | recombiner charcoal adsorber | |||||||||||||
| RECS | radiological emergency communications system | |||||||||||||
| RECW | reactor enclosure cooling water | |||||||||||||
| REETS | radiological effluent and environmental technical specification | |||||||||||||
| REHR | reactor heat removal | |||||||||||||
| REI | request for engineering investigation | |||||||||||||
| REIC | Radiation Effects Information Center | |||||||||||||
| REIRS | Radiation Exposure and Information Reporting System | |||||||||||||
| REL | radiation evaluation loop | reactor equipment limited | ||||||||||||
| REM | realistic evaluation model | |||||||||||||
| rem | roentgen equivalent man | |||||||||||||
| REMODCM | radiological effluent monitoring and offsite dose calculation manual | |||||||||||||
| REMP | radiological environmental monitoring program | |||||||||||||
| REP | radiological emergency plan | resonance escape probability | ||||||||||||
| rep | roentgen equivalent physical | |||||||||||||
| RER | radiation effects reactor | radioactive effluent release | regulatory effectiveness review | representative for experiment review | risk evaluation report | |||||||||
| RERC | radiological emergency response coordination | |||||||||||||
| RERO | radiological emergency response operation | |||||||||||||
| RERP | radiological emergency response planning | |||||||||||||
| RERS | reactor enclosure recirculation system | |||||||||||||
| RERTR | reduced enrichment for research and test reactors | |||||||||||||
| RES | Nuclear Regulatory Research, Office of (NRC) | |||||||||||||
| RES | INSPresident inspector | |||||||||||||
| RESAR | reference safety analysis report | |||||||||||||
| RESC | reactor subcriticality | |||||||||||||
| RESL | Radiological and Environmental Sciences Laboratory | |||||||||||||
| RETS | radiological effluent technical specification | radiological environmental technical specification | ||||||||||||
| REVAB | relief valve augmented bypass | |||||||||||||
| REW | recycle water | |||||||||||||
| RF | radiofrequency | release factor | reply finding | |||||||||||
| RFA | Regulatory Flexibility Act | removable fuel assembly | ||||||||||||
| RFC | recirculation flow control | request for comments | ||||||||||||
| RFCS | recirculation flow control system | |||||||||||||
| RFI | radio frequency interference | request for information | ||||||||||||
| RFIC | request for information or clarification | |||||||||||||
| RFN | remote filter niche | |||||||||||||
| RFO | refueling outage | |||||||||||||
| RFP | reactor feed pump | request for procurement | request for proposal | reversed field pinch | Rocky Flats Plant | |||||||||
| RFPA | request for procurement action | |||||||||||||
| RFPT | reactor feed pump turbine | |||||||||||||
| RFQ | request for quotation | |||||||||||||
| RFT | revisable format text | |||||||||||||
| RFW | reactor feedwater | |||||||||||||
| RFX | reversed field experiment | |||||||||||||
| RG | regulated gallery | regulatory guide | ||||||||||||
| R.G. | regulatory guide | |||||||||||||
| RG&E | Rochester Gas & Electric Corp. | |||||||||||||
| RGM | radiogas monitor | |||||||||||||
| RGR | rare-gas recovery | |||||||||||||
| RH | relative humidity | |||||||||||||
| RHC | reactor head cooling | |||||||||||||
| RHR | residual heat removal | |||||||||||||
| RHRP | residual heat removal pump | |||||||||||||
| RHRS | residual heat removal system | |||||||||||||
| RHRSW | residual heat removal service water | |||||||||||||
| RHT | recycle holdup tank | |||||||||||||
| RHTS | reactor heat transport system | |||||||||||||
| RHX | regenerative heat exchanger | |||||||||||||
| RI | radiation indicator | reactor island | Region I–King of Prussia, Pennsylvania (NRC) | resident inspector | resonance integral | |||||||||
| R&I | removal and installation | |||||||||||||
| RIA | reactivity-initiated accident | reactivity insertion accident | regulatory impact analysis or analyses | removable instrument assembly | ||||||||||
| RIAEC | Rhode Island Atomic Energy Commission | |||||||||||||
| RIB | recruitment, incentives, and benefits | |||||||||||||
| RICO | Racketeering Influenced and Corrupt Organizations Act | |||||||||||||
| RIDR | receipt inspection data report | |||||||||||||
| RIDS | receiving inspection data status | regulatory information distribution system | ||||||||||||
| RIE | Replacement Item Evaluation | |||||||||||||
| RIENA | Rassegra Internazionale Elettrònica Nucleare ed Aerospaziale (Italy) | |||||||||||||
| RIF | reduction in force | |||||||||||||
| RIG | risk-based inspection guide | |||||||||||||
| RII | receiving inspection instruction | Region II–Atlanta, Georgia (NRC) | ||||||||||||
| RIIC | rotary inertia included case | |||||||||||||
| RIII | Region III–Lisle, Illinois (NRC) | |||||||||||||
| RIL | research information letter | |||||||||||||
| RIM | relative importance measure | |||||||||||||
| RIMS | regional input-output modeling system | |||||||||||||
| RINA | Registro Italiano Navale (Italy) | |||||||||||||
| RIOPR | Rhode Island Open Pool Reactor | |||||||||||||
| RIOT | remote input-output terminal | |||||||||||||
| RIP | reactor internal pump | receiving inspection plan | ||||||||||||
| RIPBR | risk-informed, performance-based regulation | |||||||||||||
| RIPS | radioisotope power supply | |||||||||||||
| RIR | radiological incident report | receipt inspection report | risk increase ratio | |||||||||||
| RIRP | Regulatory Issue Resolution Plan | |||||||||||||
| RIS | reporting identification symbol | reservoir-induced seismicity | ||||||||||||
| RISC | reduced instruction set computer | |||||||||||||
| RISS | reactor internals subsystem | |||||||||||||
| RITS | regulatory information tracking system | resource information tracking system | ||||||||||||
| RIV | reactor isolation valve | Region IV–Arlington, Texas (NRC) | ||||||||||||
| RJE | remote job entry | |||||||||||||
| RKS | Raadet foer Kaernkraftsaekerhet (Sweden) | |||||||||||||
| RL | reactor licensing | refracted longitudinal | ||||||||||||
| RLE | review-level earthquake | |||||||||||||
| RLO | Records Liaison Officer | |||||||||||||
| RLOP | reactor licensing operating procedure | |||||||||||||
| RLR | radioactive lighting rod | |||||||||||||
| RM | radiation monitor | radiation monitoring | radiometric monitor | reactor manufacturer | remote manual | rulemaking | ||||||||
| RMAAS | reactivity monitoring and alarm system | |||||||||||||
| RMBCS | Rocky Mountain Bank Card System | |||||||||||||
| RMC | Radiation Management Corporation | remote manual control | ||||||||||||
| RM&C | reactor monitoring and control | |||||||||||||
| RMCS | reactor makeup control system | reactor manual control system | ||||||||||||
| RME | reasonable maximum exposure | |||||||||||||
| RMF | reactivity measurement facility | |||||||||||||
| RMIEP | risk methodology integration and evaluation program | |||||||||||||
| RMP | risk management plan | |||||||||||||
| RMRM | radioactive materials reference manual | |||||||||||||
| RMS | radiation monitoring system | radiological monitoring system | regulatory manpower system | remote manual switch | ||||||||||
| RMW | reactor makeup water | |||||||||||||
| RMWS | reactor makeup water storage | |||||||||||||
| RMWST | reactor makeup water storage tank | |||||||||||||
| RMWT | reactor makeup water tank | reactor makeup water transfer | ||||||||||||
| RNA | ribonucleic acid | |||||||||||||
| RNB | research nuclear battery | return to nucleate boiling | ||||||||||||
| RNDT | reference nil ductility temperature | |||||||||||||
| RNWP | reduced notch worth procedure | |||||||||||||
| RO | reactor operator | regional office | remain open | reportable occurrence | restriction orifice | reverse osmosis | ||||||||
| ROD | release order directive | |||||||||||||
| ROI | region of interest | |||||||||||||
| ROM | read only memory | |||||||||||||
| ROP | record of purchase | |||||||||||||
| ROS | requisition on stores | |||||||||||||
| ROSA | Rig of Safety Assessment | |||||||||||||
| ROSENERGO-ATOM | Nuclear Power Utility (Russia) | |||||||||||||
| ROSPA | risk-based operational safety performance assessment | |||||||||||||
| ROW | requisition on warehouse | right of way | ||||||||||||
| RP | radiation protection | reactor pool | reactor pressure | reactor project | release point | |||||||||
| RPAM | regional public affairs manager | |||||||||||||
| RPAO | regional public affairs officer | |||||||||||||
| RPAS | reactor protection actuating signal | |||||||||||||
| RPB | reactor pressure boundary | |||||||||||||
| RPC | Radiation Policy Council | Radiation Protection Committee | remote process cell | rod pattern controller | rotating pancake coil | |||||||||
| RPCB | reactor power cutback | |||||||||||||
| RPCC | remote process crane cave | |||||||||||||
| RPCS | reactor plant control system | |||||||||||||
| RPCWS | reactor plant cooling water system | |||||||||||||
| RPD | reactor plant designer | |||||||||||||
| RPDF | radiation protection design feature | |||||||||||||
| RPE | radiation protection engineer | resource planning and evaluation | ||||||||||||
| RPF | region peaking factor | right panel front | ||||||||||||
| RPG | radiation protection guide | report program generator | ||||||||||||
| RPI | relative position indication | rod position indicator | ||||||||||||
| RPIS | rod position indication system | rod position information system | ||||||||||||
| RPM | radiation protection manager | |||||||||||||
| RPO | radiation protection officer | |||||||||||||
| RPP | radiation protection plan | |||||||||||||
| RPPS | reactor plant and process sampling | |||||||||||||
| RPS | radiation protection supervisor | Reactor Program System | reactor protection system | regulatory performance summary | ||||||||||
| RPST | reaction products separator tank | |||||||||||||
| RPT | radiation protection technician | reactor for physical and technical | recirculation pump trip | |||||||||||
| RPV | reactor pressure vessel | |||||||||||||
| RPVI | reactor pressure vessel integrity | |||||||||||||
| RPVRI | reactor pressure vessel reflective insulation | |||||||||||||
| R&QA | reliability and quality assurance | |||||||||||||
| RQD | rock-quality designation | |||||||||||||
| RR | receiving report | review report | review request | |||||||||||
| RRA | Radiation Research Associates, Inc. | risk-reduction analysis/analyses | ||||||||||||
| RRC | radiation recorder controller | reactor recirculation cooling | ||||||||||||
| RRD | retendering receipt day | |||||||||||||
| R&RE | radiation and repair engineering | |||||||||||||
| RRG | regulatory response group | regulatory review group | research review group | |||||||||||
| RRI | resident reactor inspector | |||||||||||||
| RRP | reactor recirculation pump | reactor refueling plug | ||||||||||||
| RRPI | relative rod position indication | rotary relative position indicator | ||||||||||||
| RRR | Raleigh Research Reactor | |||||||||||||
| RRRC | Regulatory Requirements Review Committee | |||||||||||||
| RRS | reactor recirculation system | reactor refueling system | reactor regulating system | required response spectrum/spectra | resin regeneration subsystem | |||||||||
| RRTF | Regulatory Reform Task Force | |||||||||||||
| RRW | risk reduction worth | |||||||||||||
| RS | radiation source | reactor safeguards | reactor safety | reactor system | recirculation spray | reference section | ||||||||
| RSA | remote shutdown area | |||||||||||||
| RSAO | Regional State Agreements Officer | |||||||||||||
| RSARR | Republic of South Africa Research Reactor | |||||||||||||
| RSB | reactor service building | |||||||||||||
| RSC | radiation safety committee | reactor safety coordinator | reactor site criterion/criteria | |||||||||||
| RSCE | reserve shutdown control equipment | |||||||||||||
| RSCM | reserve shutdown control material | |||||||||||||
| RSCS | reactor sequence control system | rod sequence control system | ||||||||||||
| RSCW | Research Reactor, State College of Washington | |||||||||||||
| RSD | relative standard deviation | responsible system designer | ||||||||||||
| RSE | reserve shutdown equipment | |||||||||||||
| RSEP | Robinson Steam Electric Plant | |||||||||||||
| RSH | resin sluice header | |||||||||||||
| RSHX | recirculation spray heat exchanger | |||||||||||||
| RSI | reactor siting index | |||||||||||||
| RSIC | Radiation Shielding Information Center | |||||||||||||
| RSK | Reaktorsicherheitskommission (Germany) | |||||||||||||
| RSLO | regional State liaison officer | |||||||||||||
| RSNGS | Rancho Seco Nuclear Generating Station | |||||||||||||
| RSO | radiation safety officer | reactor system outline | ||||||||||||
| RSP | reactivity surveillance procedure | remote shutdown panel | rotating shield plug | |||||||||||
| RSPE | recruitment, staffing, and position evaluation | |||||||||||||
| RSR | radiological safety review | reactor safety research | reference safety report | |||||||||||
| RSS | reactor safety study | reactor shutdown system | relay setting sheet | remote shutdown system | reserve shutdown system | |||||||||
| RSSF | retrievable surface storage facility | |||||||||||||
| RSSMAP | Reactor Safety Study Methodology Application Program | |||||||||||||
| RSST | reserve station service transformer | |||||||||||||
| RSW | raw service water | |||||||||||||
| RT | radiographic test | reactor trip | reference temperature | |||||||||||
| RTB | reactor trip breaker | |||||||||||||
| RTC | regional training center | removable top closure | ||||||||||||
| RTCB | reactor trip circuit breaker | run to cladding breach | ||||||||||||
| RTD | resistance temperature detector | resistance temperature device | Roentgen Technische Dienst B.V. (Netherlands) | |||||||||||
| RTDP | reactor technology development plan | revised thermal design procedure | ||||||||||||
| RTE | relocation tabletop exercise | residual total elongation | ||||||||||||
| RTG | radioactive thermoelectric generator | radioisotope thermoelectric generator | ||||||||||||
| RTGB | reactor turbine generator board | |||||||||||||
| RTL | radioisotope transport loop | |||||||||||||
| RTM | reactor trip module | regulatory technical memorandum/memoranda | Response Technical Manual | |||||||||||
| Rtndt | reference temperature nil ductility | |||||||||||||
| RTNSS | regulatory treatment of nonsafety systems | |||||||||||||
| RTO | reactor trip override | |||||||||||||
| RTP | rated thermal power | restart test program | ||||||||||||
| RTS | reactor trip system | refueling water transfer and storage | ||||||||||||
| RTSS | reactor trip switchgear system | |||||||||||||
| RTT | reference transition temperature | |||||||||||||
| RTV | room temperature vulcanizing | |||||||||||||
| R&U | repairs and utilities | |||||||||||||
| RV | Reactor Venezolano (Venezuela) | reactor vessel | release valve | relief valve | ||||||||||
| RVC | reactor volume control | remote valve control | ||||||||||||
| RVDP | relief valve discharge piping | |||||||||||||
| RVHVS | reactor vessel head vent system | |||||||||||||
| RVID | Reactor Vessel Integrity Database | |||||||||||||
| RVIS | reactor vessel instrumentation system | |||||||||||||
| RVLIS | reactor vessel level instrumentation system | |||||||||||||
| RVLM | reactor vessel level monitoring | |||||||||||||
| RVRLIS | reactor vessel refueling level indication system | |||||||||||||
| RVS | reactor vessel system | |||||||||||||
| RVSS | reactor vessel support structure | |||||||||||||
| RVUH | reactor vessel upper head | |||||||||||||
| RW | raw water | Ringsdorff-Werke, G.m.b.H. (Germany) | river water | |||||||||||
| RWA | radwaste area | |||||||||||||
| RWB | rod withdrawal block | |||||||||||||
| RWC | reactor water cleanup | |||||||||||||
| RWCS | reactor water cleanup system | |||||||||||||
| RWCU | reactor water cleanup | |||||||||||||
| RWDS | radwaste disposal system | |||||||||||||
| RWE | Rheinisch-Westfälisches Elektrizitätswerk, A.G. (Germany) | rod withdrawal error | ||||||||||||
| RWL | reactor water level | rod withdrawal limiter | ||||||||||||
| RWM | rod worth minimizer | |||||||||||||
| RWN | room work notification | |||||||||||||
| RWP | radiation work permit | radwaste work permit | ||||||||||||
| RWPC | radwaste process cell | |||||||||||||
| RWPH | river water pump house | |||||||||||||
| RWR | radioactive waste reduction | |||||||||||||
| RWS | radwaste system | |||||||||||||
| RWSF | radwaste solidification facility | |||||||||||||
| RWSP | refueling water storage pool | |||||||||||||
| RWSS | radwaste sample station | |||||||||||||
| RWST | refueling water storage tank | |||||||||||||
| RWT | radiation worker training | refueling water tank | ||||||||||||
| RWTA | river water treatment area | |||||||||||||
| RWTS | regenerant waste treatment subsystem | |||||||||||||
| RWV | radioactive waste vent | |||||||||||||
| RY | reactor-year | |||||||||||||
| SA | safety analysis/analyses | |||||||||||||
| SA | safety assessment | service air | system administrator | |||||||||||
| S/A | subassembly | |||||||||||||
| S&A | surveillance and accountability | |||||||||||||
| SAAEB | South African Atomic Energy Board | |||||||||||||
| SAC | Systems Automation Corp. | |||||||||||||
| SAD | safety analysis diagram | safety assurance diagram | systems, assistant director | |||||||||||
| SADE | superheat advanced demonstration experiment | |||||||||||||
| SAE | site area emergency | Society of Automotive Engineers | ||||||||||||
| SAFDL | specified acceptable fuel design limit | |||||||||||||
| SAFE | safeguards automated facility evaluation | Society for the Advancement of Fission Energy | ||||||||||||
| SAFO | Swedish Atomic Forum | |||||||||||||
| SAFR | sodium advanced fast reactor | |||||||||||||
| SAFT | synthetic aperture focusing technique | |||||||||||||
| SAG | senior advisory group | |||||||||||||
| SAGSI | Standing Advisory Group on Safeguards Implementation | |||||||||||||
| SAI | Science Applications, Inc. | |||||||||||||
| SAIC | Science Applications International Corp. (formerly Science Applications, Inc.) | |||||||||||||
| SAID | safety analysis input data | |||||||||||||
| SAIGE | Società di Architettura Industriale per Gli Impiantidi Generazione de Energia, SpA (Italy) | |||||||||||||
| SAL | service advisory letter | |||||||||||||
| SALE | safeguards analytical laboratory evaluation | |||||||||||||
| SALP | systematic assessment of licensee performance | |||||||||||||
| SAM | stabilized assay meter | substitute alloy material | ||||||||||||
| SAMA | Scientific Apparatus Makers Association | |||||||||||||
| SAMDA | severe accident mitigation design alternative | |||||||||||||
| SAMG | severe accident management guidelines | |||||||||||||
| SAMIS | structural analysis and matrix inversion system | |||||||||||||
| SAN | standard address number | |||||||||||||
| SAP | Severe Accident Program | Special Access Program | startup administrative procedure | synthetic aperture program | ||||||||||
| SAPHIRE | Systems Analysis Program for Hands-on Integrated Reliability Evaluation | |||||||||||||
| SAPL | Seacoast Antipollution League | |||||||||||||
| SAPS | Shippingport Atomic Power Station | |||||||||||||
| SAQV | safety assessment and quality verification | |||||||||||||
| SAR | safety analysis report | |||||||||||||
| SARA | severe accident risk assessment | systems analysis and risk assessment | ||||||||||||
| SAREF | safety research experiment facility | |||||||||||||
| SARP | Severe Accident Reduction Program | Severe Accident Research Plan | Severe Accident Research Program | |||||||||||
| SARRP | Severe Accident Risk Reduction Program | |||||||||||||
| SART | site access refresher training | |||||||||||||
| SAS | safety assessment system | secondary alarm station | security agency study | service air system | station air system | |||||||||
| SASA | severe accident sequence analysis/analyses | |||||||||||||
| SAT | site access training | spray additive tank | startup auxiliary transformer | station auxiliary transformer | systems approach to training l’Energie Nucléaire (France) | |||||||||
| SAVC | structural assembly verification card | |||||||||||||
| SAVS | safeguards area ventilation system | |||||||||||||
| SAW | steam, air, water | submerged arc weld | submerged arc welding | |||||||||||
| SAYG | sign-as-you-go | |||||||||||||
| SBA | Small Business Administration | |||||||||||||
| SBACS | shield building air cleanup system | |||||||||||||
| SBAECS | shield building air exhaust cleanup system | |||||||||||||
| SBC | steam bypass control | |||||||||||||
| SBCC | steam bubble collapse induced | |||||||||||||
| SBCR | Small Business and Civil Rights, Office of (NRC) | |||||||||||||
| SBCS | steam bypass control system | |||||||||||||
| SBFAS | shield building air filtration actuation system | |||||||||||||
| SBFU | stuck breaker failure unit | |||||||||||||
| SBGT | standby gas treatment | |||||||||||||
| SBGTS | standby gas treatment system | |||||||||||||
| SBIR | Small Business Innovative Research | |||||||||||||
| SBK | Schnell-Brüter-Kernkraftwerksgesellschaft, m.b.H. (Germany) | |||||||||||||
| SBLC | standby liquid control | |||||||||||||
| SBLOCA | small-break loss-of-coolant accident | |||||||||||||
| SBO | station blackout | |||||||||||||
| SBOC | superheated blowdown outside containment | |||||||||||||
| SBR | Soviet Breeder Reactor | |||||||||||||
| SBREFA | Small Business Regulatory Enforcement Fairness Act | |||||||||||||
| SBVS | shield building ventilation system | |||||||||||||
| SBWR | simplified boiling-water reactor | |||||||||||||
| SC | safety class | secondary confinement | site characterization | site contingency | speed controller | surveillance compliance | ||||||||
| SCA | secondary control assembly | simulated core assembly | single-channel analyzer | site characterization analysis/analyses | small component autoclave | sneak circuit analysis/analyses | ||||||||
| SCAT | spray chemical addition tank | |||||||||||||
| SCBA | self-contained breathing apparatus | |||||||||||||
| SCBR | steam-cooled breeder reactor | |||||||||||||
| SCC | shutdown cooling circulator | specialized common carrier | stress-corrosion cracking | |||||||||||
| SCCS | secondary chemical control system | shutdown cooling circulator subsystem | sodium chemistry control system | standby core cooling system | ||||||||||
| SCD | severe core damage | significant construction deficiency | ||||||||||||
| SCDAP | severe core damage analysis package | |||||||||||||
| SCDWMR | steam-cooled deuteriated water-moderated reactor | |||||||||||||
| SCE | saturated calomel electrode | situation-caused error | Southern California Edison Co. | |||||||||||
| SCEAR | Scientific Committee on the Effects of Atomic Radiation | |||||||||||||
| SCEG | South Carolina Electric & Gas Co. | |||||||||||||
| SCE&G | South Carolina Electric & Gas Co. | |||||||||||||
| SCEL | small-component evaluation loop | |||||||||||||
| SCEW | system component evaluation worksheet | |||||||||||||
| SCF | SNAP critical facility | sodium cleaning facility | ||||||||||||
| SCFBR | steam-cooled fast breeder reactor | |||||||||||||
| scfh | standard cubic foot/feet per hour | |||||||||||||
| scfm | standard cubic foot/feet per minute | |||||||||||||
| SCFS | secondary containment fill station | |||||||||||||
| SCGA | sodium-cooled graphite assembly | |||||||||||||
| SCHE | shutdown cooling heat exchanger | |||||||||||||
| SCHES | shutdown cooling heat exchanger subsystem | |||||||||||||
| SCHS | small-component handling system | |||||||||||||
| SCI | secondary containment isolation | |||||||||||||
| SCIV | secondary containment isolation valve | |||||||||||||
| SCK | Studiecentrum voor Kernenergie (Belgium) | |||||||||||||
| SCM | simulated core mockup | simulated core model | steam condensing mode | |||||||||||
| SCN | software change notice | specification change notice | ||||||||||||
| SCO | senior control (room) operator | |||||||||||||
| SCOA | sample cave operating area | |||||||||||||
| SCORE | Standing Committee on Regulatory Effectiveness | |||||||||||||
| SCOTTR | supercritical once-through tube reactor | |||||||||||||
| SCP | security control point | site characterization plan | ||||||||||||
| SCPPCS | secondary containment purge and pressure control system | |||||||||||||
| SCR | selenium control rectifier | significant condition report | silicon-controlled rectifier | site characterization report | site characterization review | sodium-cooled reactor | software change request | |||||||
| SCRB | Senior Contract Review Board | |||||||||||||
| SCRD | secondary control rod driveline | |||||||||||||
| SCRDM | secondary control rod drive mechanism | |||||||||||||
| SCRE | shift control room engineer | |||||||||||||
| SCRM | secondary certified reference material | |||||||||||||
| SCRO | senior control room operator | |||||||||||||
| SCRS | secondary control rod system | |||||||||||||
| SCRWC | Sierra Club Radioactive Waste Campaign | |||||||||||||
| SCS | secondary coolant system | shutdown cooling system | sodium characterization system | Soil Conservation Service (U.S. Department of Agriculture) | ||||||||||
| SCSHX | shutdown cooling system heat exchange | shutdown cooling system heat exchanger | ||||||||||||
| SCSI | Southern Company Services, Inc. | |||||||||||||
| SCSIN | Service Central de Sûrété des Installations Nucléaires (France) | |||||||||||||
| SCSS | Sequence Coding and Search System | |||||||||||||
| SCST | spray chemical storage tank | |||||||||||||
| SCTA | secondary container transfer area | |||||||||||||
| SCTF | slab core test facility | sodium chemical technology facility | ||||||||||||
| SCTI | sodium component test installation | |||||||||||||
| SCTL | small components test loop | |||||||||||||
| SCUMRA | Société Centrale de l’Uranium et des Minéraux et Métaux Radioactifs (France) | |||||||||||||
| SCV | steel containment vessel | systems completion verification | ||||||||||||
| SCVI | special construction verification inspection | |||||||||||||
| SCWE | safety-conscious work environment | |||||||||||||
| SCWHE | shutdown cooling water heat exchanger | |||||||||||||
| SCWR | supercritical water reactor | |||||||||||||
| SCWS | shutdown cooling water subsystem | |||||||||||||
| SD | scram discharge | shakedown | shutdown | standard drawing | standards development | station directive | supply duct | system description | ||||||
| S/D | shutdown | |||||||||||||
| SDA | standard design approval | startup detector assembly | supplier data approval | |||||||||||
| SDBCS | steam dump bypass control system | |||||||||||||
| SDC | shield design code | shutdown cooling | structural design criterion/criteria | |||||||||||
| SDCC | small-diameter component cask | |||||||||||||
| SDCS | shutdown cooling system | |||||||||||||
| SDD | system design description | |||||||||||||
| SDEM | Société d’Enterprise de Montages (France) | |||||||||||||
| SDF | spillway design flood | |||||||||||||
| SDG | standby diesel generator | |||||||||||||
| SDGE | San Diego Gas & Electric Co. | |||||||||||||
| SDH | side drill hole | |||||||||||||
| SDHR | shutdown decay heat removal | |||||||||||||
| SDHX | shutdown heat exchanger | |||||||||||||
| SDIP | surveillance dosimetry improvement program | |||||||||||||
| SDLC | synchronous data link control | system development life cycle | ||||||||||||
| SD/LP | shutdown and low power | |||||||||||||
| SDM | shutdown margin | |||||||||||||
| SDMF | surveillance dosimetry measurement facility | |||||||||||||
| SDMP | Site Decommissioning Management Plan | |||||||||||||
| SDOF | single degree of freedom | |||||||||||||
| SDP | setdown pool | |||||||||||||
| SDR | significant deficiency report | SNAP Developmental Reactor | supplier deviation request | |||||||||||
| SDS | shutdown sequencer | steam dump system | submerged demineralizer system | |||||||||||
| SDSP | site director standard practice | |||||||||||||
| SDV | scram discharge volume | steam dump valve | ||||||||||||
| SDVIV | scram discharge volume instrument volume | |||||||||||||
| SE | safety evaluation | shift engineer | significant event (NRC performance indicator) | subcritical experiment | ||||||||||
| SEA | Susquehanna Environmental Advocates | |||||||||||||
| SEAONC | Structural Engineers Association of Northern California | |||||||||||||
| SEAR | safety evaluation audit report | |||||||||||||
| SEAS | Strategic Environmental Assessment Systems | |||||||||||||
| SEASET | separate effects and systems effects test | |||||||||||||
| SECC | Safe Energy Communication Council | |||||||||||||
| SECHT | scoping emergency cooling heat transfer | |||||||||||||
| SECOM | Safe Energy Coalition of Michigan | |||||||||||||
| SECY | Secretary of the Commission, Office of the (NRC) | |||||||||||||
| SEDSS | Sandia Environmental Decision Support System | |||||||||||||
| SEE | INSignificant Event Evaluation and Information Network | |||||||||||||
| SEE-IN | significant event evaluation–information notice | |||||||||||||
| SEEN | Syndicat d’Etudes de l’Energie Nucléaire (Belgium) | |||||||||||||
| SEFOR | Southwest Experimental Fast Oxide Reactor | |||||||||||||
| SEFR | shielding experiment facility reactor | |||||||||||||
| SELNI | Società Elettronucleare Italiana (Italy) | |||||||||||||
| SELO | Società Elettronica Lombarda (Italy) | |||||||||||||
| SEM | scanning electron microscope | |||||||||||||
| SEMO | Société Belgo-Française d’Energie Nucléaire Mosane (Belgium) | |||||||||||||
| SEN | Significant Event Notification (INPO) | |||||||||||||
| SENA | Société d’Energie Nucléaire Franco-Belge des Ardennes (France) | |||||||||||||
| SENN | Società Elettronucleare Nazionale (Italy) | |||||||||||||
| SENTA | Société d’Etudes Nucléaires et de Techniques Avancées (France) | |||||||||||||
| SEO | side entry orifice | |||||||||||||
| SEP | safety enhancement program | site emergency plan | source evaluation panel | standby electric power | Systematic Evaluation Program | |||||||||
| SER | safety evaluation report | Sandia Engineering Reactor | self-evaluation report | significant event report | SNAP Experimental Reactor | Staff Evaluation Report | ||||||||
| SERB | State Environmental Review Board | |||||||||||||
| SERC | Southeastern Electric Reliability Council | |||||||||||||
| SERF | Sandia Engineering Reactor Facility | special environmental radiometallurgy facility | ||||||||||||
| SERR | semiannual effluent release report | |||||||||||||
| SERS | safety evaluation report supplement | |||||||||||||
| SES | safety evaluation supplement | Senior Executive Service | steam electric station | |||||||||||
| SET | Special Evaluation Team | systems effects test | ||||||||||||
| SETF | SNAP Experimental Test Facility | |||||||||||||
| SETS | standard environmental technical specification | standardized environmental technical specification | ||||||||||||
| SETU | Société d’Etudes et de Travaux pour l’Uranium (France) | |||||||||||||
| SEUSSN | Southeastern United States Seismic Network | |||||||||||||
| SEWS | Screening Evaluation Work Sheet | |||||||||||||
| SF | source factor | spent fuel | ||||||||||||
| SFA | single-failure analysis/analyses | spent fuel assembly | standard fuel assembly | |||||||||||
| SFAS | safety features actuation signal | |||||||||||||
| SFBI | spent fuel building isolation | |||||||||||||
| SF&CG | standard format and content guidance | |||||||||||||
| SFCR | storage facility control room | |||||||||||||
| SFCS | secondary flow control system | spent fuel cooling system | ||||||||||||
| SFCSR | storage facility cable spreading room | |||||||||||||
| SFD | severe fuel damage | |||||||||||||
| SFDP | safety functions determination program | |||||||||||||
| SFDST | severe fuel damage scoping test | |||||||||||||
| SFEN | Société Française d’Energie Nucléaire (France) | |||||||||||||
| SFP | spent fuel pit | spent fuel pool | ||||||||||||
| SFPAVS | spent fuel pool area ventilation system | |||||||||||||
| SFPC | spent fuel pool cooling | |||||||||||||
| SFPCCS | spent fuel pool cooling and cleanup system | |||||||||||||
| SFPCS | spent fuel pool cooling system | |||||||||||||
| SFPO | Spent Fuel Project Office (NRC) | |||||||||||||
| SFR | startup field report | |||||||||||||
| SFRCS | steam and feedwater rupture control system | |||||||||||||
| SFRP | Société Française de Radioprotection (France) | |||||||||||||
| SFR&TA | system function review and task analysis | |||||||||||||
| SFS | steam and feedwater system | |||||||||||||
| SFSP | spent fuel storage pool | |||||||||||||
| SFTA | spent fuel transportation accident | |||||||||||||
| SFTT | spent fuel transfer tube | |||||||||||||
| SG | safety guide | steam generator | ||||||||||||
| S/G | steam generator | |||||||||||||
| SGAE | Studiengesellschaft für Atomenergie, m.b.H. (Austria) | |||||||||||||
| SGAHRS | steam generator auxiliary heat removal system | |||||||||||||
| SGAS | steam generator available signal | |||||||||||||
| SGB | steam generator blowdown | steam generator building | ||||||||||||
| SGBD | steam generator blowdown | |||||||||||||
| SGBPS | steam generator blowdown processing system | |||||||||||||
| SGBS | steam generator blowdown system | |||||||||||||
| SGCF | SNAP Generalized Critical Facility | |||||||||||||
| SGD | steam generator dryout | |||||||||||||
| SGDSM | steam generator degradation-specific management | |||||||||||||
| SGE | Société Générale d’Enterprises (France) | |||||||||||||
| SGEF | steam generator examination facility | |||||||||||||
| SGER | safeguards evaluation report | |||||||||||||
| SGFP | steam generator feedwater pump | |||||||||||||
| SGGP | steam generator group project | |||||||||||||
| SGHWR | steam-generating heavy-water reactor | |||||||||||||
| SGI | Safeguards Information | Silicon Graphics International | ||||||||||||
| SGIP | Steam Generator Integrity Program | |||||||||||||
| SGIS | safeguards initiation signal | |||||||||||||
| SGLIC | steam generator level instrumentation cabinet | |||||||||||||
| SGML | standard generalized markup language | |||||||||||||
| SGMSR | steam generator maximum steam rate | |||||||||||||
| SGN | Société de Génie Nucléaire (France) | |||||||||||||
| SGOG | Steam Generators Owners Group | |||||||||||||
| SGR | self-generation reactor | sodium-graphite reactor | ||||||||||||
| SGS | Salem Generating Station | segmented gamma scanner | steam generator subsystem | steam generator system | subgrid scale | |||||||||
| S/GS | steam generator system | |||||||||||||
| SGSA | steam generator subassembly | |||||||||||||
| SGTF | steam generator test facility | |||||||||||||
| SGTIP | Steam Generator Tube Integrity Program | |||||||||||||
| SGTR | steam generator test rig | steam generator tube rupture | ||||||||||||
| SGTS | standby gas treatment system | |||||||||||||
| SGV | steam generator vessel | |||||||||||||
| SGWLC | steam generator water level control | |||||||||||||
| SHA | sodium hydroxide addition | solid homogeneous assembly | ||||||||||||
| SHAA | sealed head access area | |||||||||||||
| SHADE | shielded hot-air drum evaporator | |||||||||||||
| SHARE | systems for heat and radiation energy | |||||||||||||
| SHE | semihomogeneous experiment | standard hydrogen electrode | ||||||||||||
| SHEAC | Safety, Health, and Environmental Appraisal Committee | |||||||||||||
| SHEEC | Shearon Harris Energy and Environmental Center | |||||||||||||
| SHF | storage-handling facility | |||||||||||||
| SHI | Sumitomo Heavy Industries Ltd. (Japan) | |||||||||||||
| SHMED | State Hazardous Materials Enforcement Development | |||||||||||||
| S/HNP | Skagit/Hanford Nuclear Project | |||||||||||||
| SHNPP | Shearon Harris Nuclear Power Plant | |||||||||||||
| SHPO | State Historic Preservation Officer | |||||||||||||
| SHRS | shutdown heat removal system | |||||||||||||
| SHTL | small heat-transfer loop | |||||||||||||
| SI | safety injection | security inspector | special instruction | surveillance inspection | surveillance instruction | système international (d’unités) (International System of Units) | ||||||||
| SIAS | safety injection actuation signal | |||||||||||||
| SIC | standard industrial classification | Standard Industrial Code | ||||||||||||
| SICN | Société Industrielle de Combustible Nucléaire (France) | |||||||||||||
| SICS | safety injection control system | |||||||||||||
| SID | sodium ionization detector | |||||||||||||
| SI/EB | safety injection/emergency boration | |||||||||||||
| SIG | special inquiry group | |||||||||||||
| SIGEN | Società Impianti Generazione Energia Nucleare, SpA (Italy) | |||||||||||||
| SIHP | Sargent Industries, Huntington Park | |||||||||||||
| SIL | service information letter | |||||||||||||
| SIM | service information memorandum/memoranda | |||||||||||||
| SIMEA | Società Italiana Meridionale Energia Atomica (Italy) | |||||||||||||
| SIMS | safety issues management system | |||||||||||||
| SIN | Schweizerisches Institut für Nuklearforschung (Switzerland) | |||||||||||||
| SINB | Southern Interstate Nuclear Board | |||||||||||||
| SINET | Shared Information Network | |||||||||||||
| SIO | Società per l’Industria dell’Ossigeno e de Altri Gas (Italy) | |||||||||||||
| SIPAO | simulator for postaccident operation | |||||||||||||
| SIPI | Scientists Institute for Public Information | |||||||||||||
| SIR | safeguards implementation report | safe integral reactor | safety issue resolution | self-initiated review | submarine intermediate reactor | |||||||||
| SIRMO | senior information resource management official | |||||||||||||
| SIRW | safety injection and refueling water | |||||||||||||
| SIRWT | safety injection and refueling water tank | |||||||||||||
| SIS | safety injection signal | safety injection system | site integrated schedule | Special Inspection Services | ||||||||||
| SISBO | self-induced station blackout | |||||||||||||
| SISI | surveillance and inservice inspection | |||||||||||||
| SIT | safety injection tank | safety injection transmitter | social implications of technology | structural integrity test | ||||||||||
| SITP | site inspection and test procedure | |||||||||||||
| SJAE | steam jet-air ejector | |||||||||||||
| SJWCP | skid jacket water cooling pump | |||||||||||||
| SKA | Studienkommission für Atomenergie (Switzerland) | |||||||||||||
| SKI | Swedish Nuclear Power Inspectorate | |||||||||||||
| SL | safety limit | section leader | stationary low | |||||||||||
| S&L | Sargent & Lundy Engineers | |||||||||||||
| SLAC | Stanford Linear Accelerator Center | |||||||||||||
| SLB | status light box | steamline break | ||||||||||||
| SLC | standby liquid control | State liaison coordinator | ||||||||||||
| SLCRS | supplemental leakage collection and release system | supplementary leak collection and release system | ||||||||||||
| SLCS | standby liquid control system | |||||||||||||
| SLD | shutdown logic diagram | |||||||||||||
| SLF | seismic load factor | |||||||||||||
| SLI | steamline isolation | |||||||||||||
| SLIP | serial line Internet protocol | |||||||||||||
| SLIV | steamline isolation valve | |||||||||||||
| SLMCPR | safety limit for minimum critical power | |||||||||||||
| SLO | single-loop operation | State liaison officer | ||||||||||||
| SLP | St. Lucie Plant | |||||||||||||
| SLPS | State and local program support | |||||||||||||
| SLSF | sodium-loop safety facility | |||||||||||||
| SLTC | seismic loading for temporary condition | |||||||||||||
| SLSV | shutdown-loop shutoff valve | |||||||||||||
| SLUC | standard level user charge | |||||||||||||
| SLWMS | secondary liquid waste management system | |||||||||||||
| SM | shift manager | stationary medium | ||||||||||||
| SMA | shielded metal arc | |||||||||||||
| SMACNA | Sheet Metal and Air Conditioning Contractors’ National Association | |||||||||||||
| SMART | senior management assessment of readiness team | |||||||||||||
| SMAW | shielded metal arc weld | shielded metal arc welding | submerged metal arc welding | |||||||||||
| SMBDB | structural margin beyond design basis | |||||||||||||
| SMC | segmented maintenance cask | seismic methodology chain | systems, man, and cybernetics | |||||||||||
| SMM | seismic margins method | senior management meeting | subcooling margin monitor | |||||||||||
| SMP | simulator modification package | |||||||||||||
| SMR | shield mockup reactor | solid moderated reactor | system modification request | |||||||||||
| SMSA | standard metropolitan statistical area | |||||||||||||
| SMTI | sodium mechanisms test installation | |||||||||||||
| SMTP | simple mail transfer protocol | |||||||||||||
| SMUD | Sacramento Municipal Utility District | |||||||||||||
| S/N | serial number | |||||||||||||
| SNAME | Society of Naval Architects and Marine Engineers | |||||||||||||
| SNAP | safeguards network analysis procedure | shielded neutron assay probe | Struthers Nuclear and Process Co. | systems for nuclear auxiliary power | ||||||||||
| SNC | Sierra Nuclear Corp. | |||||||||||||
| SNE | Sociedad Nuclear Española (Spain) | |||||||||||||
| SNEC | Saxton Nuclear Experimental Corp. | subgroup on nuclear export coordination | ||||||||||||
| SNERP | Saxton Nuclear Experimental Reactor Project | |||||||||||||
| SNG | synthetic natural gas | |||||||||||||
| SNGS | Salem Nuclear Generating Station | |||||||||||||
| SNI | Società Nucleare Italiana (Italy) | |||||||||||||
| SNL | Sandia National Laboratories | |||||||||||||
| SNM | Society for Nuclear Medicine | special nuclear material | ||||||||||||
| SNOC | Southern Nuclear Operating Company | |||||||||||||
| SNP | Sequoyah Nuclear Power Plant | Skagit Nuclear Power Project | ||||||||||||
| SNPS | Seabrook Nuclear Power Station | Shoreham Nuclear Power Station | ||||||||||||
| SNR | slow neutron reactor | supplier nonconformance report | ||||||||||||
| SNRC | Soreq Nuclear Research Center | |||||||||||||
| SNS | Seabrook Nuclear Station | spallation neutron source | ||||||||||||
| SNUPPS | standardized nuclear unit power plant system | |||||||||||||
| SO | Siemens Österreich (Austria) | status officer | supervising operator | |||||||||||
| SOA | statement of account | |||||||||||||
| SOC | Statements of Consideration | |||||||||||||
| SOCCS | summary of component control status | |||||||||||||
| SOCIA | Société pour l’Industrie Atomique (France) | |||||||||||||
| SOD | shallow outside diameter | Société d’Etudes pour l’Obtention du Deuterium (France) | ||||||||||||
| SODERN | Société d’Etudes et Réalisations Nucléaires (France) | |||||||||||||
| SOE | sequence of events | |||||||||||||
| SOER | safety operational event report | significant operating event report | significant operating experience report | |||||||||||
| SOICS | summary of installation control status | |||||||||||||
| SOL | senior operator license | |||||||||||||
| SOM | shift operations manager | |||||||||||||
| SONGS | San Onofre Nuclear Generating Station | |||||||||||||
| SONOPCO | Southern Nuclear Operating Company | |||||||||||||
| SOP | standard operating procedure | stepoff pad | Supervisory Orientation Program | |||||||||||
| SOPI | system operational performance inspection | |||||||||||||
| SOPR | Spanish Open Pool Reactor | |||||||||||||
| SOPREN | Società Progettazione Reattori Nucleari, SpA (Italy) | |||||||||||||
| SOR | static O-ring | system of records | ||||||||||||
| SORC | station operations review committee | |||||||||||||
| SORIN | Società Ricerche Impianti Nucleari (Italy) | |||||||||||||
| SORV | stuck-open relief valve | |||||||||||||
| SORX | Security Organization Response Exercise | |||||||||||||
| SOS | shift operations supervisor | |||||||||||||
| SOV | solenoid-operated valve | |||||||||||||
| SOW | statement of work | |||||||||||||
| SP | sampling point | security procedure | set point | special project | special purpose | suppression pool | surveillance procedure | |||||||
| SPACS | sodium purification and characterization system | |||||||||||||
| SPAHR | simulation package for assessing health risks | |||||||||||||
| SPAR | simplified plant analysis risk | |||||||||||||
| SPB | Security Policy Board | |||||||||||||
| SPC | Siemens Power Corporation (formerly Exxon Nuclear) | standby pressure control | stored program controller | suppression pool cooling | ||||||||||
| SPCED | system for physical control of energy distribution | |||||||||||||
| SPCP | statistical process control program | |||||||||||||
| SPCU | suppression pool cleanup | |||||||||||||
| SPDES | State Pollutant Discharge Elimination System | |||||||||||||
| SPDS | safety parameter display system | |||||||||||||
| SPEEDI | system for prediction of environmental emergency dose information | |||||||||||||
| SPER | Security Plan Evaluation Report | |||||||||||||
| SPERT | special power excursion reactor test | |||||||||||||
| SPES | Simulatore per Esperienze di Sicurezza (Italy) [Simulator for Safety Experimental Analysis] | Simuluzione PWR per Esperienze di Sicurezza (Italy) | ||||||||||||
| SPF | site population factor | standard project flood | ||||||||||||
| SPGD | self-powered gamma detector | |||||||||||||
| SP/HD | spool piece head | |||||||||||||
| SPI | site population index | |||||||||||||
| SPIAM | sodium purity in-line analytical module | |||||||||||||
| SPIN | Società per Imprese Nucleare, SpA (Italy) | |||||||||||||
| SPIP | Safety and Performance Improvement Program | |||||||||||||
| SPMC | Seabrook Plan for the Massachusetts Communities | |||||||||||||
| SPMS | suppression pool makeup system | |||||||||||||
| SPND | self-powered neutron detector | |||||||||||||
| SPOC | system preoperability checklist | |||||||||||||
| SPOUT | system peripheral output utility | |||||||||||||
| SPR | Sandia Pulsed Reactor | |||||||||||||
| SPRF | Sandia Pulsed Reactor Facility | |||||||||||||
| SPS | safety protection subsystem | secondary plant system | standard project storm | Summit Power Station | supplementary protection system | Surry Power Station | ||||||||
| SPSC | Southwestern Public Service Co. | |||||||||||||
| SP/SC | shield plug/support cylinder | |||||||||||||
| SPSS | shield plug storage station | |||||||||||||
| SPT | satellite pulse technique | special purpose test | standard penetration test | |||||||||||
| SPTF | sodium pump test facility | |||||||||||||
| SPV | storage process vent | |||||||||||||
| SPVC | simulated pressure vessel capsule | |||||||||||||
| SPVR | storage process vent room | |||||||||||||
| SPX | superheat power experiment | |||||||||||||
| SQR | seismic qualification report | supplier quality representative | ||||||||||||
| SQRS | seismic qualification review summary | |||||||||||||
| SQRT | seismic qualification review team | |||||||||||||
| SQUG | Seismic Qualification User’s Group | Seismic Qualification Utility Group | ||||||||||||
| SR | safety related | safety rod | source range | summary report | support reaction | surveillance requirement | ||||||||
| S/R | safety relief | shipper-receiver | ||||||||||||
| SRA | senior resident analyst | |||||||||||||
| SRB | safety review board | |||||||||||||
| SRBT | single-rod burst test | |||||||||||||
| SRC | Science Research Council (United Kingdom) | shutdown reactor cooling | spares receiving checklist | |||||||||||
| SRCAS | safety-related control air system | |||||||||||||
| SRCC | safety-related control circuit | |||||||||||||
| SRCI | safety-related control and instrumentation | |||||||||||||
| SRD | self-reading dosimeter | shipper-receiver difference | ||||||||||||
| SR&D | sodium removal and decontamination | |||||||||||||
| SRDA | sodium removal development apparatus | |||||||||||||
| SRDC | safety-related design condition | |||||||||||||
| SRDI | safety-related display instrumentation | |||||||||||||
| SRE | safety-related equipment | sodium reactor experiment | ||||||||||||
| SREC | standard radiological effluent control | |||||||||||||
| SRFM | source range flux monitor | source range flux monitoring | ||||||||||||
| SRGS | St. Rosalie Generating Station | |||||||||||||
| SRH | switchyard relay house | |||||||||||||
| SRHC | shutdown reactor head cooling | |||||||||||||
| SRI | senior resident inspector | Stanford Research Institute | ||||||||||||
| SRIAER | Scientific Research Institute for Atomic Energy Reactors (U.S.S.R.) | |||||||||||||
| SRIC | senior resident inspector for construction | |||||||||||||
| SRL | Savannah River Laboratory | |||||||||||||
| SRM | source range monitor | staff requirements memorandum/memoranda | standard reference material | startup range monitor | ||||||||||
| SRN | specification revision notice | |||||||||||||
| SRO | senior reactor operator | specification release order | ||||||||||||
| SROA | safety-related operator action | |||||||||||||
| SROS | send/receive from the opposite side | |||||||||||||
| SRP | Savannah River Plant | small radioactive particle | small rotating plug | Standard Review Plan | ||||||||||
| SRP-LR | standard review plan–license renewal | |||||||||||||
| SRRC | Standing Results Review Committee | |||||||||||||
| SRS | sodium removal station | sodium removal system | solid radwaste system | |||||||||||
| SRSS | send/receive from the same side | square root of the sum of the squares | ||||||||||||
| SRST | spent resin storage tank | |||||||||||||
| SRT | special review team | spent resin tank | ||||||||||||
| SRTI | Société de Recherches Techniques et Industrielles (France) | |||||||||||||
| SRU | Société de Raffinage d’Uranium (France) | |||||||||||||
| SRV | safety/relief valve | |||||||||||||
| S/RV | safety/relief valve | |||||||||||||
| SRVDL | safety/relief valve discharge line | |||||||||||||
| S/RVDL | safety/relief valve discharge line | |||||||||||||
| SRVL | safety-related vendor list | |||||||||||||
| SRVO | safety relief valve open | |||||||||||||
| SR/VO | safety relief valve open | |||||||||||||
| SRWS | solid radioactive waste system | |||||||||||||
| SS | safe shutdown | sample sink | sample station | sampling system | shift supervisor | site safety | site suitability | Southern Services, Inc. | special source | speed sensor | stainless steel | Susquehanna Station | systems specialist | |
| SSA | safety system actuation (NRC performance indicator) | |||||||||||||
| SSAB | site-specific advisory board | |||||||||||||
| SSAR | site safety analysis report | standard safety analysis report | ||||||||||||
| SSAS | small sample assay system | |||||||||||||
| SSAT | safety significance assessment team | |||||||||||||
| SSB | Source Selection Board | Strategic Steering Board | ||||||||||||
| SSC | short segmented cask | simulated surveillance capsule | Southern Services Company | structure, system, and component | super system code | |||||||||
| SSCA | spray system compressed air | |||||||||||||
| SSCC | Solid-State Circuits Council | |||||||||||||
| SSCCS | solid-state component control system | |||||||||||||
| SSCR | spectral shift control reactor | |||||||||||||
| SS&D | sealed source & device | |||||||||||||
| SSDR | Sealed Source and Device Nationwide Registry | |||||||||||||
| SSE | safe-shutdown earthquake | |||||||||||||
| SSEB | Southern States Energy Board | South of Scotland Electricity Board | ||||||||||||
| SSEI | Safety System Engineering Inspection | |||||||||||||
| SSER | site safety evaluation report | supplemental safety evaluation report | supplement to safety evaluation report | |||||||||||
| SSES | Susquehanna Steam Electric Station | |||||||||||||
| SSF | safe-shutdown facility | safety system failure (NRC performance indicator) | service storage facility | standby shutdown facility | ||||||||||
| SSFI | safety systems functional inspection | |||||||||||||
| SSI | safe-shutdown impoundment | soil-structure interaction | steady-state irradiation | |||||||||||
| SSK | Strahlenschutzkommission (Germany) | |||||||||||||
| SSLPS | solid-state logic protection system | |||||||||||||
| SSMRP | seismic safety margins research program | |||||||||||||
| SSNM | strategic special nuclear material | |||||||||||||
| SSNPP | small-size nuclear power plant | |||||||||||||
| SSO | System Security Officer | |||||||||||||
| SSOMI | safety systems outage modification inspection | |||||||||||||
| SSORA | security system operational recording and analysis/analyses | |||||||||||||
| SSP | sodium sampling package | staff site position | static sodium pot | |||||||||||
| SSPB | Swedish State Power Board | |||||||||||||
| SSPC | Steel Structure Painting Council | |||||||||||||
| SSPI | safety system performance indicator | |||||||||||||
| SSPM | safety system performance monitor | |||||||||||||
| SSPS | solid-state protection system | |||||||||||||
| SSPWR | small-size pressurized-water reactor | |||||||||||||
| SSQE | safety system quality evaluation | |||||||||||||
| SSR | seal steam regulator | secondary system relief | separate superheater reactor | site suitability report | site suitability review | specification status report | ||||||||
| SSRAP | Senior Seismic Review and Advisory Panel | |||||||||||||
| SSRCR | suggested State regulations for the control of radiation | |||||||||||||
| SSRM | safety system readiness monitor | |||||||||||||
| SSRT | slow strain rate test | |||||||||||||
| SSS | safe-shutdown system | secondary sampling system | sensitized stainless steel | shield and seismic support | shift support supervisor | special safeguards study | special safety safeguard | standby shutdown system | ||||||
| SSST | site suitability source term | |||||||||||||
| SST | secondary surge tank | siting source term | station service transformer | |||||||||||
| SS/T | steady-state/transient | |||||||||||||
| SSTP | Super SARA Test Program | |||||||||||||
| SSTR | solid-state track recorder | |||||||||||||
| SSW | salt service water | standby service water | ||||||||||||
| SSWP | station service water pump | |||||||||||||
| SSWS | standby service water system | station service water system | ||||||||||||
| ST | site team | source term | special test | speed transmitter | ||||||||||
| STA | Science and Technology Agency (Japan) | shift technical advisor | ||||||||||||
| STAR | Sandia National Laboratories Transient Axial Relocation | shield test air reactor | space thermionic auxiliary reactor | |||||||||||
| STC | sound transmission coefficient | |||||||||||||
| STCL | source-term control loop | |||||||||||||
| STCP | source-term code package | |||||||||||||
| STE | shield test experiment | shift technical engineer | special test exception | system test engineer | ||||||||||
| ST&E | security test and evaluation | |||||||||||||
| STEC | South Texas Electric Cooperative, Inc. | |||||||||||||
| STEP | safety test engineering program | source-term experiments project | ||||||||||||
| STF | safety test facility | shield test facility | shielded test facility | |||||||||||
| STH | simplified time history | |||||||||||||
| STI | special team inspection | surveillance test interval | ||||||||||||
| STIF | short-term irradiation facility | |||||||||||||
| STIR | shield test and irradiation reactor | special technical issue report | ||||||||||||
| STL | site team leader | |||||||||||||
| STP | short-term program | shutdown transfer panel | South Texas Project | special technical publication | staff technical position | standard temperature and pressure | surveillance test procedure | system test procedure | ||||||
| STPF | shield test pool facility | |||||||||||||
| STPM | simulated thermal power monitor | |||||||||||||
| STR | submarine thermal reactor | |||||||||||||
| STRESS | structural engineering system solver | |||||||||||||
| STRIDE | standard reactor island design | |||||||||||||
| STS | Standard Technical Specification | |||||||||||||
| STV | small test vessel | |||||||||||||
| S/U | startup | |||||||||||||
| SUNY | State University of New York | |||||||||||||
| SUPO | super power | |||||||||||||
| SUPS | static uninterruptible power supply | |||||||||||||
| SUR | startup rate | |||||||||||||
| SUS | startup system | |||||||||||||
| SU/SD | startup and shutdown | |||||||||||||
| SUT | startup transformer | |||||||||||||
| SV | safety valve | |||||||||||||
| Sv | sievert | |||||||||||||
| SV | solenoid valve | stop valve | ||||||||||||
| SVA | single-valve first-actuation | |||||||||||||
| SVBC | simulated void box capsule | |||||||||||||
| SVHHC | St. Vincent Hospital and Health Center | |||||||||||||
| SW | service water | Struthers Wells Corp. | ||||||||||||
| S&W | Stone and Webster Engineering Corp. | |||||||||||||
| SWA | startup work authorization | |||||||||||||
| SWBP | sidewall bearing pressure | |||||||||||||
| SWBS | solid waste barrel storage | |||||||||||||
| SWC | solid waste cask | |||||||||||||
| SWCP | secondary water chemistry program | |||||||||||||
| SWCS | salt water cooling system | |||||||||||||
| SWDS | steam and water dump system | |||||||||||||
| SWEC | Stone and Webster Engineering Corp. | |||||||||||||
| SWESSAR | Stone and Webster Standard Safety Analysis Report | |||||||||||||
| SWET | simulated water entry test | |||||||||||||
| SWGR | switchgear | |||||||||||||
| SWGTS | steam and waste gas treatment system | |||||||||||||
| SWIS | service water intake structure | |||||||||||||
| SWISS | sustained water interactions with stainless steel | |||||||||||||
| SWM | Serber-Wilson method | |||||||||||||
| SWMS | solid waste management system | |||||||||||||
| SWO | stop-work order | |||||||||||||
| SWP | service water pump | solid waste packaging | solid waste processing | special work permit | ||||||||||
| SWPP | Southwest Power Pool | |||||||||||||
| SWPS | solid waste processing system | |||||||||||||
| SWR | service water reservoir | sodium-water reaction | submarine water reactor | |||||||||||
| SwRI | Southwest Research Institute | |||||||||||||
| SWRPRS | sodium-water reaction pressure relief subsystem | |||||||||||||
| SWS | service water system | solid waste system | ||||||||||||
| SWSR | solid waste shipping room | |||||||||||||
| SWTS | secondary waste treatment system | |||||||||||||
| SWU | separate work unit | separative work unit | ||||||||||||
| SX | solvent extraction | |||||||||||||
| SXF | solvent extraction feed | |||||||||||||
| SYCA | Syndicat d’Etude des Centrales Atomiques (Belgium) | |||||||||||||
| SYRFA | Société de Système Française pour les Réacteurs Avancées (France) | |||||||||||||
| SZW | Ministry of Social Affairs and Employment (Netherlands) | |||||||||||||
| TA | Technical Associates | transfer aisle | ||||||||||||
| T&A | time and attendance | |||||||||||||
| TAAG | technical assessment and advisory group | |||||||||||||
| TAC | task action commitment | technical assignment control | technical assistance contract | |||||||||||
| TACF | temporary alteration control form | |||||||||||||
| TACS | technical assignment control system | test assembly conditioning station | ||||||||||||
| TADOT | trip actuating device operational test | |||||||||||||
| TAEC | Thailand Atomic Energy Commission | |||||||||||||
| TAF | top of active fuel | |||||||||||||
| TAG | technical advisory group | test assembly grapple | ||||||||||||
| TAIC | Tokyo Atomic Industrial Consortium | |||||||||||||
| TAL | transporter air lock | |||||||||||||
| TAML | Taunton Municipal Lighting Plant | technical assistance management letter | ||||||||||||
| TAP | task action plan | test analysis package | thermal analyzer program | |||||||||||
| TAPD | test and analysis program description | |||||||||||||
| TAPM | technical assistance project manager | |||||||||||||
| TAPMG | technical assistance program management group | |||||||||||||
| TAPSS | technical assistance programs support system | |||||||||||||
| TAR | technical assistance request | test analysis report | ||||||||||||
| TARGET | thermal advanced gas-cooled reactor exploiting thorium | |||||||||||||
| TASC | Technical Activity Steering Committee | |||||||||||||
| TAUF | test assembly unloading fixture | |||||||||||||
| TAVS | turbine area ventilation system | |||||||||||||
| TAWC | Tennessee-American Water Co. | |||||||||||||
| TB | total body | turbine building | ||||||||||||
| TB&A | Theodore Barry and Associates | |||||||||||||
| TBCCW | turbine building closed cooling water | |||||||||||||
| TBD | to be determined | |||||||||||||
| TBEA | training benefits and employee assistance | |||||||||||||
| TBESI | turbine building exhaust system isolation | |||||||||||||
| TBM | tunnel-boring machine | |||||||||||||
| TBP | tributyl phosphate | |||||||||||||
| TBS | turbine bypass system | |||||||||||||
| TBSCCW | turbine building secondary closed cooling water | |||||||||||||
| TBSW | turbine building service water | |||||||||||||
| TBV | turbine block valve | turbine building ventilation | ||||||||||||
| TBYMS | Technical Bases for Yucca Mountain Standards | |||||||||||||
| TC | temperature controller | transfer canal | ||||||||||||
| T/C | thermocouple | |||||||||||||
| TCA | thermal critical assembly | |||||||||||||
| TCC | Transducer Controls Corporation | |||||||||||||
| TCCC | time current characteristic curve | |||||||||||||
| TC/LD | thermocouple/lead detector | |||||||||||||
| TCM | technical committee meeting | |||||||||||||
| TCP/IP | transmission control protocol/Internet protocol | |||||||||||||
| TCS | telephone conference summary | temporary conditioning station | turbine control system | |||||||||||
| TCV | temperature control valve | turbine control valve | ||||||||||||
| TD | theoretical density | time delay | transfer dolly | turbine driven | ||||||||||
| TDAFP | turbine-driven auxiliary feed pump | |||||||||||||
| TDAFW | turbine-driven auxiliary feedwater | |||||||||||||
| TDAFWP | turbine-driven auxiliary feedwater pump | |||||||||||||
| TDC | thermal diffusion coefficient | |||||||||||||
| TDCR | test deficiency change request | |||||||||||||
| TDD | test design description | |||||||||||||
| TDEFWP | turbine-driven emergency feedwater pump | |||||||||||||
| TDF | task deletion form | thermal design flow | ||||||||||||
| TDH | Texas Department of Health | total developed head | total dynamic head | |||||||||||
| TDI | Transamerica Delaval, Inc. | turbine disk integrity | ||||||||||||
| TDIOG | Transamerica DeLaval, Inc., Owners Group | |||||||||||||
| TDM | time division multiplex | |||||||||||||
| TDMC | Technical Data Management Center (Oak Ridge National Laboratory) | |||||||||||||
| TDN | technology development need | |||||||||||||
| TDP | turbine-driven pump | |||||||||||||
| TDR | technical data report | test deficiency report | time domain reflectometry | |||||||||||
| TDS | time delay switch | total dissolved solids | ||||||||||||
| TE | temperature element | test exception | thermal expansion | transient event | ||||||||||
| T/E | thermoelectric | |||||||||||||
| TEAR | training evaluation audit report | |||||||||||||
| TEC | Technology for Energy Corp. | total estimated cost | ||||||||||||
| TECHNICATOME | Société Technique pour l’Energie Atomique (France) | |||||||||||||
| TECO | Toledo Edison Company | |||||||||||||
| TECRO | Taipei Economic and Cultural Representative Office (Taiwan) | |||||||||||||
| TEDE | total effective dose equivalent | |||||||||||||
| TEFC | totally enclosed fan cooled | |||||||||||||
| TEG | thermoelectric generator | |||||||||||||
| TEM | transmission electron microscope | |||||||||||||
| TEMA | Tubular Exchanger Manufacturers Association | |||||||||||||
| TEMAC | Top Event Matrix Analysis Code | |||||||||||||
| TENR | technologically enhanced naturally radioactive | |||||||||||||
| TENRAP | technologically enhanced naturally radioactive product | |||||||||||||
| TEP | Tyrone Energy Park | |||||||||||||
| TER | technical evaluation report | technical exchange report | ||||||||||||
| TES | Teledyne Engineering Services | |||||||||||||
| TFANP | Task Force Against Nuclear Pollution | |||||||||||||
| TFC | thermal fatigue crack | |||||||||||||
| TFE | thermionic fuel element | thin film evaporator | ||||||||||||
| TFM | Treasury Financial Manual | |||||||||||||
| TFS | turbine first stage | |||||||||||||
| TFTR | tokamak fusion test reactor | |||||||||||||
| TG | turbine generator | |||||||||||||
| T/G | turbine generator | |||||||||||||
| TGB | turbine generator building | |||||||||||||
| TGEP | turbine generator emergency power | |||||||||||||
| TGIS | toxic gas isolation system | |||||||||||||
| TGLM | task group lung model | |||||||||||||
| TGS | turbine generator system | |||||||||||||
| TGSCC | transgranular stress-corrosion cracking | |||||||||||||
| TGSS | turbine gland sealing system | |||||||||||||
| TGV | turbine governor valve | |||||||||||||
| T/H | thermal and hydraulic | |||||||||||||
| THCS | temperature of hot-channel sodium | |||||||||||||
| THERP | technique for human error rate prediction | |||||||||||||
| THL | top of heated length | |||||||||||||
| THM | time history model | |||||||||||||
| THPO | Tribal Historic Preservation Officer | |||||||||||||
| THTF | thermal hydraulic test facility | |||||||||||||
| THTR | thorium high-temperature reactor | |||||||||||||
| TI | temperature indicator | temporary instruction | test instruction | transport index | ||||||||||
| TIA | task interface agreement | |||||||||||||
| TIBB | Tecnomasio Italiano Brown Boveri, SpA (Italy) | |||||||||||||
| TIC | Technical Information Center | temperature-indicating controller | ||||||||||||
| TID | Technical Information Document | technical report designation for the U.S. Atomic Energy Commission | total integrated dose | |||||||||||
| TIF | task initiation force | task initiation form | ||||||||||||
| TIG | tungsten inert gas | |||||||||||||
| TIP | tactical improvement package | transient in-core probe | traveling in-core probe | traversing in-core probe | ||||||||||
| TIRGALEX | Technical Integration Review Group for Aging and Life Extension | |||||||||||||
| TIS | temperature-indicating switch | |||||||||||||
| TL | task leader | test load | truck lock | |||||||||||
| TLA | thin layer activation | |||||||||||||
| TLAA | time-limited aging analysis | |||||||||||||
| TLD | thermoluminescence dosimeter | |||||||||||||
| TLEC | Texas-Louisiana Electric Cooperative | |||||||||||||
| TLLM | temperature and liquid level monitor | |||||||||||||
| TLO | turbine lube oil | |||||||||||||
| TLOFW | total loss of feedwater | |||||||||||||
| TLOS | turbine lube oil system | |||||||||||||
| TLOST | turbine lube oil storage tank | |||||||||||||
| TLP | top load pad | top load plane | ||||||||||||
| TLTA | two-loop test apparatus | |||||||||||||
| TLTM | third-level thermal margin | |||||||||||||
| TLV | threshhold limit value | |||||||||||||
| TM | technical manual | temperature monitor | ||||||||||||
| TMBDB | thermal margin beyond design basis | |||||||||||||
| TMD | transient mass distribution | |||||||||||||
| TMH | trolley-mounted hoist | |||||||||||||
| TMI | Three Mile Island | |||||||||||||
| TMI-1 | Three Mile Island Unit 1 | |||||||||||||
| TMI-2 | Three Mile Island Unit 2 | |||||||||||||
| TMIA | Three Mile Island Alert, Inc. | |||||||||||||
| TMI-AP | Three Mile Island Action Plan | |||||||||||||
| TMINS | Three Mile Island Nuclear Station | |||||||||||||
| TMIPO | Three Mile Island Program Office | |||||||||||||
| TM/LP | thermal margin/low pressure | |||||||||||||
| TMPA | Texas Municipal Power Agency | |||||||||||||
| TMR | Teledyne Materials Research | |||||||||||||
| TNA | thermal neutron activation | |||||||||||||
| TNE | TUEC (Texas Utilities Electric Co.) nuclear engineering | |||||||||||||
| TNP | Trojan Nuclear Plant | |||||||||||||
| TNPG | The Nuclear Power Group (United Kingdom) | |||||||||||||
| TNT | trinitrotoluene | |||||||||||||
| TOED | Toledo Edison Co. | |||||||||||||
| TOL | temporary operating license | thermal overload | ||||||||||||
| TOP | thermal overload protection | transient overpower | ||||||||||||
| TOPO | trioctylphosphine oxide | |||||||||||||
| TOPR | Taiwan Open-Pool Reactor | |||||||||||||
| TOS | torque overload switch | |||||||||||||
| TOSS | transient and/or steady state | |||||||||||||
| TP | technical position | test pressure | test procedure | test program | ||||||||||
| TPA | total-system performance assessment | |||||||||||||
| TP-BAR | tritium-producing burnable absorber rod | |||||||||||||
| TPC | Taiwan Power Company | |||||||||||||
| TPCDF | total plant core damage frequency | |||||||||||||
| TPD | test procedure deviation | |||||||||||||
| TPF | total peaking factor | |||||||||||||
| TPFL | two-phase flow loop | |||||||||||||
| TPM | thermal power monitor | |||||||||||||
| TPPEP | Turkey Point Performance Enforcement Program | |||||||||||||
| TPS | Turkey Point Station | |||||||||||||
| TPSS | turbine plant sampling system | |||||||||||||
| TPTF | two-phase test facility | |||||||||||||
| TQM | total quality management | |||||||||||||
| T&QP | Training and Qualification Plan | |||||||||||||
| TR | technical review | temperature recorder | topical report | tritium recovery | Turkish Reactor | |||||||||
| TRA | tubular reactor assembly | |||||||||||||
| TRAP | trip reduction and assessment program (WOG) | |||||||||||||
| TRB | test review board | |||||||||||||
| TRC | technical review committee | The Radiochemical Centre (United Kingdom) | ||||||||||||
| TRE | total rare earths | |||||||||||||
| TREAT | transient reactor test | |||||||||||||
| TRIA | temperature-removable instrument assembly | |||||||||||||
| TRIGA | training reactor and isotopes production, General Atomics | |||||||||||||
| TRIM | targeted regulatory improvement | |||||||||||||
| TRIP | transient response implementing procedure | |||||||||||||
| TRM | Technical Requirements Manual | |||||||||||||
| TRR | test and research reactor | Thailand Research Reactor | ||||||||||||
| TRRT | test results review team | |||||||||||||
| TRS | thermal reactor safety | |||||||||||||
| TRT | technical review team | |||||||||||||
| TRTR | training, research, and test reactor | |||||||||||||
| TRU | transuranic | transuranium | ||||||||||||
| TRUWIP | Transuranic Waste Immobilization Program | |||||||||||||
| TRX | two-region physics critical experiment | |||||||||||||
| TS | technical specification | test specification | treatment system | |||||||||||
| TSA | tube support assembly | |||||||||||||
| TSABC | technical services as-built coordinator | |||||||||||||
| TSAR | topical safety analysis report | |||||||||||||
| TSC | technical support center | test shipping cask | ||||||||||||
| TSCA | Toxic Substances Control Act | |||||||||||||
| TSCC | Technical Support Coordinating Committee | |||||||||||||
| TSCF | task schedule change form | |||||||||||||
| TSDR | technical services design review | |||||||||||||
| TSF | tower shield facility | tower shielding facility | ||||||||||||
| TSG | technical support guidelines | |||||||||||||
| TSH | temperature switch, high | |||||||||||||
| TSI | Thermal Sciences Inc. | |||||||||||||
| TSIP | Technical Specifications Improvement Program | |||||||||||||
| TSIR | technical specifications interpretation report | |||||||||||||
| TSM | temporary station modification | |||||||||||||
| TSMD | technical services mechanical drafting | |||||||||||||
| TSMDA | test section meltdown accident | |||||||||||||
| TSO | time-sharing option | |||||||||||||
| TSOP | Technical Specifications Optimization Program | |||||||||||||
| TSP | Telecommunications Service Priority | trisodium phosphate | tube support plate | |||||||||||
| TSPA-VA | total system performance assessment-viability assessment | |||||||||||||
| TSPM | technical surveillance countermeasure | |||||||||||||
| TSPS | tube support plate sleeve | |||||||||||||
| TSR | thermal shock rig | total stress range | tower shielding reactor | |||||||||||
| TSRG | Technical Specifications Review Group | |||||||||||||
| TSSC | Toxic Substances Strategy Committee | |||||||||||||
| TSV | turbine stop valve | |||||||||||||
| TSW | turbine service water | |||||||||||||
| TT | temperature transmitter | test temperature | turbine trip | |||||||||||
| TTA | thenyltrifluoroacetone | |||||||||||||
| TTBT | Threshold Test Ban Treaty | |||||||||||||
| TTC | Technical Training Center | test transfer cask | Transportation Technology Center | |||||||||||
| TTE | thermal transient equipment | |||||||||||||
| TTF | transient time flowmeter | |||||||||||||
| TTFM | transit time flowmeter | |||||||||||||
| TTHE | thermal transient histogram equivalent | |||||||||||||
| TTP | technology transfer program | test transfer port | ||||||||||||
| TTQAP | teletherapy treatment quality assurance program | |||||||||||||
| TTR | thermal test reactor | time to repair | ||||||||||||
| TTS | telecommunications tracking system | time-temperature sensitization | ||||||||||||
| TTV | tenth thickness value | |||||||||||||
| TTWB | turbine trip with bypass | |||||||||||||
| TTY | teletypewriter | |||||||||||||
| TU | Texas Utilities Co. | |||||||||||||
| TUEC | Texas Utilities Electric Co. | |||||||||||||
| TUFCDF | Thorium-Uranium Fuel Cycle Development Facility | |||||||||||||
| TUS | Texas Utilities Services Inc. | |||||||||||||
| TUSI | Texas Utilities Services Inc. | |||||||||||||
| TUV | Technischer Überwachungsverein, e.V. (Germany) | |||||||||||||
| TVA | Tennessee Valley Authority | |||||||||||||
| TVG | time-variable gain | |||||||||||||
| TVO | Teollisuuden Voima Osakeyhtio (Finland) | |||||||||||||
| TVR | Tennessee Valley region | |||||||||||||
| TWC | Texas Water Commission | |||||||||||||
| TWCA | Teledyne Wah Chang Albany | |||||||||||||
| TWFN | Two White Flint North | |||||||||||||
| TWG | test working group | |||||||||||||
| TWRS | tank waste remediation system | |||||||||||||
| TWX | teletypewriter exchange service | |||||||||||||
| TZM | tantalum, zirconium, molybdenum | |||||||||||||
| UAP | uranyl ammonium phosphate | |||||||||||||
| UAT | unit auxiliary transformer | |||||||||||||
| UBAEC | Union of Burma Atomic Energy Centre | |||||||||||||
| UBC | Uniform Building Code | |||||||||||||
| UCL | upper control limit | |||||||||||||
| UCLA | University of California, Los Angeles | |||||||||||||
| UCLR | University of California, Lawrence Radiation Laboratory | |||||||||||||
| UCNI | unclassified controlled nuclear information | |||||||||||||
| UCO | uranium oxicarbide fuel | |||||||||||||
| UCS | Union of Concerned Scientists | |||||||||||||
| UDI | Utility Data Institute | |||||||||||||
| UDRPS | ultrasonic data recording and processing system | |||||||||||||
| UDS | ultimate damage state | |||||||||||||
| UDT | underwater demolition team | |||||||||||||
| UE | Union Electric Co. | |||||||||||||
| UEC | United Engineers and Constructors, Inc. | |||||||||||||
| UE&C | United Engineers and Constructors, Inc. | |||||||||||||
| UEF | upper end fitting | |||||||||||||
| UEL | upper electrical limit | |||||||||||||
| UF | urea-formaldehyde | |||||||||||||
| UFCS | uranium hexafluoride chemical feed station | |||||||||||||
| UFFC | ultrasonic ferroelectrics and frequency control | |||||||||||||
| UFL | upper flammability limit | |||||||||||||
| UFM | unified fracture mechanics | |||||||||||||
| UFR | uranium hexafluoride recovery room | |||||||||||||
| UFSAR | updated final safety analysis report | |||||||||||||
| UFTR | University of Florida Teaching Reactor | |||||||||||||
| UGS | upper group stop | upper guide structure | ||||||||||||
| UHF | ultrahigh frequency | |||||||||||||
| UHI | upper-head injection | |||||||||||||
| UHN | uranyl hexahydrate nitrate | |||||||||||||
| UHS | ultimate heat sink | ultrahigh speed | ||||||||||||
| UHTREX | ultrahigh temperature reactor experiment | |||||||||||||
| UHV | ultrahigh voltage | |||||||||||||
| UI | United Illuminating Co. | |||||||||||||
| UIS | upper internals structure | |||||||||||||
| UISJM | upper internals structure jacking mechanism | |||||||||||||
| U.K. | United Kingdom | |||||||||||||
| UKAEA | United Kingdom Atomic Energy Authority | |||||||||||||
| UKNR | University of Kansas Nuclear Reactor | |||||||||||||
| UL | Underwriters Laboratories, Inc. | upper level | ||||||||||||
| ULD | unit load demand | |||||||||||||
| UMRR | University of Missouri Research Reactor | |||||||||||||
| UMTR | University of Maryland Teaching Reactor | |||||||||||||
| UMTRA | uranium mill tailings remedial action | |||||||||||||
| UMTRAP | Uranium Mill Tailings Remedial Action Program | |||||||||||||
| UMTRCA | Uranium Mill Tailings Radiation Control Act | |||||||||||||
| UN | uranyl nitrate | |||||||||||||
| UNC | United Nuclear Corp. | |||||||||||||
| UND | uranyl nitrate distillate | |||||||||||||
| UNE | Union Electric Co. | |||||||||||||
| UNH | uranyl nitrate hexahydrate | |||||||||||||
| UNHC | uranyl nitrate hexahydrate cell | |||||||||||||
| UNI | United Nuclear Industries, Inc. | |||||||||||||
| UNIPEDE | International Union of Producers and Distributors of Electrical Energy | |||||||||||||
| UNIT | United Illuminating Co. | |||||||||||||
| UNPOC | Utility Nuclear Power Oversight Committee | |||||||||||||
| UNSCEAR | United Nations Scientific Committee on the Effects of Atomic Radiation | |||||||||||||
| UNWMG | Utility Nuclear Waste Management Group | |||||||||||||
| UO | unit operator | |||||||||||||
| UOGF | uranium off-gas filter | |||||||||||||
| UOP | unit operating procedure | |||||||||||||
| UOR | upper oil reservoir | |||||||||||||
| UPI | upper plenum injection | |||||||||||||
| UPL | uranium product loadout | Utah Power & Light Co. | ||||||||||||
| UPM | universal permissive module | |||||||||||||
| UPPS | ultimate plant protection system | |||||||||||||
| UPR | uranium production reactor | |||||||||||||
| UPS | uninterrupted power supply | uninterruptible power supply | uninterruptible power system | |||||||||||
| UPTF | Upper Plenum Test Facility (Germany) | |||||||||||||
| UPTPS | upper plenum thermal protection structure | |||||||||||||
| UR | user requirement | |||||||||||||
| URA | Universities Research Association | uranium recycle acid | ||||||||||||
| URAEP | University of Rochester Atomic Energy Project | |||||||||||||
| URC | ultrasonic resin cleaner | |||||||||||||
| URD | underground residential distribution | Utility Requirements Document | ||||||||||||
| URFO | uranium recovery field office | uranium recovery field officer | ||||||||||||
| URG | unit review group | |||||||||||||
| URI | unresolved item | |||||||||||||
| URL | Uniform Resource Locator | |||||||||||||
| URTC | Ukrainian Radiation Training Center | |||||||||||||
| USA | upper-shelf analysis/analyses | |||||||||||||
| USAEC | U.S. Atomic Energy Commission | |||||||||||||
| USAR | updated safety analysis report | |||||||||||||
| USAS | United States of America Standards | |||||||||||||
| USASI | United States of America Standards Institute | |||||||||||||
| USBR | U.S. Bureau of Reclamation | |||||||||||||
| U.S.C. | U.S. Code | |||||||||||||
| USCEA | U.S. Council for Energy Awareness (now NEI) | |||||||||||||
| USCG | U.S. Coast Guard | Utility Safety Classification Group | ||||||||||||
| USC&GS | U.S. Coast and Geodetic Survey | |||||||||||||
| USDA | U.S. Department of Agriculture | |||||||||||||
| USE | upper-shelf energy | |||||||||||||
| USEC | U.S. Enrichment Corporation | |||||||||||||
| USGS | U.S. Geological Survey | |||||||||||||
| USI | unresolved safety issue | |||||||||||||
| USNDC | U.S. Nuclear Data Committee | |||||||||||||
| USNRC | U.S. Nuclear Regulatory Commission | |||||||||||||
| USP | upper sequential permissive | |||||||||||||
| USPHS | U.S. Public Health Service | |||||||||||||
| USQ | unreviewed safety question | |||||||||||||
| USQD | unresolved safety question determination | |||||||||||||
| USRP | updated standard review plan | |||||||||||||
| UST | United States Testing Co. | |||||||||||||
| USWB | U.S. Weather Bureau | |||||||||||||
| UT | ultrasonic test | ultrasonic testing | universal time | |||||||||||
| U/Th | uranium-to-thorium ratio | |||||||||||||
| UT/ISI | ultrasonic inservice inspection | |||||||||||||
| UTM | universal transverse Mercator | |||||||||||||
| UTP | upper tie plate | |||||||||||||
| UTR | university training reactor | |||||||||||||
| UTRR | University of Teheran Research Reactor | |||||||||||||
| UTS | upper tube sheet | |||||||||||||
| UU | ultimate user | |||||||||||||
| UUCP | Unix-to-Unix copy program | |||||||||||||
| UV | undervoltage | |||||||||||||
| UVAR | University of Virginia Reactor | |||||||||||||
| UVR | undervoltage relay | University of Virginia Reactor | ||||||||||||
| UVSC | uranium ventilation scrubber cell | |||||||||||||
| UVTA | undervoltage trip attachment | |||||||||||||
| UWRR | University of Wyoming Research Reactor | |||||||||||||
| UWTR | University of Washington Training Reactor | |||||||||||||
| UXO | unexploded ordnance | |||||||||||||
| UZ | unsaturated zone | |||||||||||||
| v% | volume percent | |||||||||||||
| VA | viability assessment | vital area | ||||||||||||
| Vac | volts alternating current | |||||||||||||
| VAK | Versuchsatomkraftwerk Kahl (Germany) | |||||||||||||
| VAN | value-added network | |||||||||||||
| VANS | vehicular alert and notification system | |||||||||||||
| VAR | volt amperes reactive | |||||||||||||
| VAT | Vulnerability Assessment Team | |||||||||||||
| VBMR | ventilation barrier machine room | |||||||||||||
| VBWR | Vallecitos Boiling Water Reactor | |||||||||||||
| VC | vaporizer concentrate | |||||||||||||
| VCC | ventilated concrete cask | |||||||||||||
| VCD | vendor-certified drawing | |||||||||||||
| VCLF | vertical cask-lifting fixture | |||||||||||||
| VCM | vinyl chloride monomer | |||||||||||||
| VCT | volume control tank | |||||||||||||
| VDA | video graphics adapter | |||||||||||||
| VDC | ventilation duct chase | |||||||||||||
| Vdc | volts direct current | |||||||||||||
| VDEW | Vereinigung Deutscher Elektrizitätswerke (Germany) | |||||||||||||
| VD/OS | vacuum distillation/overflow sampler | |||||||||||||
| VDS | vacuum defueling system | |||||||||||||
| VDTUV | Vereinigung der Technischen Überwachungs-Vereine, e.V. (Germany) | |||||||||||||
| VE | Vitro Engineering | |||||||||||||
| VEC | vertical electrical chase | |||||||||||||
| VEPCO | Virginia Electric and Power Co. | |||||||||||||
| VESIAC | Vela Seismic Information and Analysis Center | |||||||||||||
| VESR | Vallecitos Experimental Superheat Reactor | |||||||||||||
| VF | vaporizer feed | |||||||||||||
| VFTP | ventilation filter testing program | |||||||||||||
| VGCH | vent gas collection header | |||||||||||||
| VGES | variable geometry experimental system | |||||||||||||
| VHES | Vitro Hanford Engineering Service | |||||||||||||
| VHF | very high frequency | |||||||||||||
| VHP | vessel head penetration | |||||||||||||
| VHPT | variable high-power trip | |||||||||||||
| VHTR | very high temperature reactor | |||||||||||||
| VI | vent isolation | |||||||||||||
| VIA | value-impact analysis/analyses | |||||||||||||
| VIMS | Virginia Institute of Marine Science | |||||||||||||
| VIRG | Vessel Integrity Review Group | |||||||||||||
| VISA | vessel integrity simulation analysis | |||||||||||||
| VIV | variable inlet vane | |||||||||||||
| VNSP | vacant nozzle shield plug | |||||||||||||
| VOG | vessel off-gas | |||||||||||||
| VOT | valve opening time | |||||||||||||
| VOTA | vibration open test assembly | |||||||||||||
| VOTES | valve operation test and evaluation system | |||||||||||||
| VP | Alvin W. Vogtle, Jr., Plant – Vogtle Electric Generating Plant | vent-clearing pressure | ||||||||||||
| VPI | vapor phase inhibitor | |||||||||||||
| VQAR | vendor quality assurance representative | |||||||||||||
| VR | volume reduction | |||||||||||||
| VRS | vacuum relief system | volume reduction system | ||||||||||||
| VS | vapor suppression | vendor specific | vessel system | virtual storage | ||||||||||
| VSC | ventilated storage cask | |||||||||||||
| VSE | vessel steam explosion | |||||||||||||
| VSLO | valve stem leakoff | |||||||||||||
| VSNS | Virgil C. Summer Nuclear Station | |||||||||||||
| VSR | Vallecitos Superheat Reactor | vertical slice review | ||||||||||||
| VSS | vessel support subsystem | |||||||||||||
| VST | valve set point tolerance | |||||||||||||
| VT | vehicular technology | |||||||||||||
| VTEC | Vermont Electric Cooperative, Inc. | |||||||||||||
| VTEP | Vermont Electric Power Co., Inc. | |||||||||||||
| VTO | vital to operations | |||||||||||||
| VTT | Valtion Teknillinen Tutkimuskeskus (Finland) | |||||||||||||
| V&V | verification and validation | |||||||||||||
| VWAC | visual weld acceptance criterion/criteria | |||||||||||||
| VWE | vanadium wire equilibration | |||||||||||||
| VWED | vanadium wire equilibration device | |||||||||||||
| VWI | visual weld inspection | visual weld inspector | ||||||||||||
| VWO | valve wide open | |||||||||||||
| VYGS | Vermont Yankee Generating Station | |||||||||||||
| VYNP | Vermont Yankee Nuclear Power Corp. | |||||||||||||
| W | Westinghouse Electric Corp. | |||||||||||||
| w% | weight percent | |||||||||||||
| WAGR | Windscale Advanced Gas-Cooled Reactor (United Kingdom) | |||||||||||||
| W-AL | Westinghouse-Astronuclear Laboratory | |||||||||||||
| WAMS | Work Action Management System | |||||||||||||
| WAN | wide-area network | |||||||||||||
| WANO | World Association of Nuclear Operators | |||||||||||||
| WAPA | wet annular poison assembly | |||||||||||||
| WAPD | Westinghouse Atomic Power Division | |||||||||||||
| WAPPA | waste package performance assessment | |||||||||||||
| W-ARD | Westinghouse Advanced Reactors Division | |||||||||||||
| WASI | workforce analysis, systems, and information | |||||||||||||
| WB | whole body | |||||||||||||
| WBEP | Watts Bar Engineering Project | |||||||||||||
| WBNP | Watts Bar Nuclear Plant | |||||||||||||
| WBNPP | Watts Bar Nuclear Performance Plan | |||||||||||||
| WBNS | water-boiler neutron source | |||||||||||||
| WBPP | Watts Bar Program Plan | |||||||||||||
| WBPT | Watts Bar Program Team | |||||||||||||
| WBS | work breakdown structure | |||||||||||||
| WC | weather condition | |||||||||||||
| WCA | whole-core accident | |||||||||||||
| WCAP | Westinghouse commercial atomic power | |||||||||||||
| WCF | waste-calcinating facility | |||||||||||||
| WCFO | Walnut Creek Field Office | |||||||||||||
| WCGS | Wolf Creek Generating Station | |||||||||||||
| WCL | Westinghouse Canada Limited | |||||||||||||
| WCNOC | Wolf Creek Nuclear Operating Corp. | |||||||||||||
| WCS | waste compaction station | |||||||||||||
| WD | waste disposal | withdrawn | ||||||||||||
| WDC | waste disposal cask | weld data card | ||||||||||||
| WDS | waste disposal system | |||||||||||||
| WDTRS | Westinghouse development test requirement specification | |||||||||||||
| WEC | Westinghouse Electric Corporation | Wolverine Electric Cooperative | ||||||||||||
| WECAN | Westinghouse Electric computer analysis/analyses | |||||||||||||
| WECST | waste evaporator condensate storage tank | |||||||||||||
| WECT | waste evaporator condensate tank | |||||||||||||
| WEP | water-extended polyester | weld evaluation project | ||||||||||||
| WEPC | Wisconsin Electric Power Co. | |||||||||||||
| WEPCO | Wisconsin Electric Power Co. | |||||||||||||
| WESF | waste encapsulation storage facility | |||||||||||||
| WESI | Westinghouse Energy Systems International (formerly WNI Nuclear) | |||||||||||||
| WESPAC | Westchester People’s Action Coalition | |||||||||||||
| WFMC | welding filler material control | |||||||||||||
| WFML | weld filler metal log | |||||||||||||
| WG | waste gas | water gauge | ||||||||||||
| WGC | waste gas compressor | |||||||||||||
| WGDS | waste gas disposal system | |||||||||||||
| WGDT | waste gas decay tank | |||||||||||||
| WGIS | waste containment and isolation strategy | |||||||||||||
| WGS | waste gas system | Waterford Generating Station | ||||||||||||
| WHC | Westinghouse Hanford Company | |||||||||||||
| WHEDL | Westinghouse-Hanford Environmental Development Laboratory | |||||||||||||
| WHO | World Health Organization | |||||||||||||
| WHT | waste holdup tank | |||||||||||||
| WIEB | Western Interstate Energy Board | |||||||||||||
| WIEP | Wisconsin Electric Power Co. | |||||||||||||
| WINB | Western Interstate Nuclear Board | |||||||||||||
| WIPP | waste isolation pilot plant | |||||||||||||
| WIR | weekly information report | |||||||||||||
| WISE | World Information Service on Energy | |||||||||||||
| WISHA | Washington Industrial Safety and Health Act | |||||||||||||
| WISP | workload information and scheduling program | |||||||||||||
| WITS | work item tracking system | |||||||||||||
| WLM | working-level month | |||||||||||||
| WMEC | Western Massachusetts Electric Co. | |||||||||||||
| WMM | wall-mounted manipulator | |||||||||||||
| WMNS | William B. McGuire Nuclear Station | |||||||||||||
| WMO | World Meteorological Organization | |||||||||||||
| WMPC | Wisconsin Michigan Power Co. | |||||||||||||
| WMS | waste management system | work management system | ||||||||||||
| WMT | waste management tank | |||||||||||||
| WNES | Westinghouse nuclear energy system | |||||||||||||
| WNFM | World Nuclear Fuel Market | |||||||||||||
| WNP | Washington Nuclear Project | |||||||||||||
| WNT | waste neutralization tank | waste neutralizing tank | ||||||||||||
| WNYNRC | Western New York Nuclear Research Center | |||||||||||||
| WO | work order | |||||||||||||
| WOFA | Westinghouse optimized fuel assembly | |||||||||||||
| WOG | Westinghouse Owners Group | |||||||||||||
| WOR | weld overlay repair | |||||||||||||
| WP | warm pipe | welding procedure | welding project | work package | work procedure | |||||||||
| WPB | waste processing building | |||||||||||||
| WPBCWS | waste processing building chilled water system | |||||||||||||
| WPC | Werner and Pfleiderer Corp. | |||||||||||||
| WPCB | Waste Processing Control Board | |||||||||||||
| WPLC | Wisconsin Power & Light Co. | |||||||||||||
| WPPSS | Washington Public Power Supply System | |||||||||||||
| WPQR | welding procedure qualification record | |||||||||||||
| WPS | warm prestressing | waste processing system | welding procedure specification | |||||||||||
| WPSC | Wisconsin Public Service Corp. | |||||||||||||
| WQC | water quality certification | |||||||||||||
| WR | Whiteshell Reactor (Canada) | wide range | work request | |||||||||||
| WRAP | water reactor analysis program | |||||||||||||
| WRC | Welding Research Council | |||||||||||||
| WRGM | wide-range gas monitor | |||||||||||||
| WRM | wide-range monitor | working reference material | ||||||||||||
| W-RM | Westinghouse–Reactor Manufacturer | |||||||||||||
| WRNMS | wide-range neutron monitoring system | |||||||||||||
| WRRR | Walter Reed Research Reactor | |||||||||||||
| WRSR | water reactor safety research | |||||||||||||
| WRT | with respect to | |||||||||||||
| WS | warm shop | |||||||||||||
| WSA | work situation approach | |||||||||||||
| WSCC | Western Systems Coordinating Council | |||||||||||||
| WSCS | waste solidification and compaction station | |||||||||||||
| WSD | working stress design | |||||||||||||
| WSF | waste shipping facility | |||||||||||||
| WSMF | welded-steel moment-resisting frame | |||||||||||||
| WSUOPR | Washington State University Open-Pool Reactor | |||||||||||||
| WT | wall thickness | |||||||||||||
| WTF | waste treatment facility | |||||||||||||
| WTP | water treatment plant | |||||||||||||
| WTR | Westinghouse Test Reactor | |||||||||||||
| WVN | water vapor nitrogen | |||||||||||||
| WVOG | wet vessel off-gas | |||||||||||||
| WW | well water | |||||||||||||
| WWPC | Washington Water Power Co. | |||||||||||||
| WWS | well water system | |||||||||||||
| WWTF | waste water treatment facility | |||||||||||||
| WWW | World Wide Web | |||||||||||||
| XLPE | cross-linked polyethylene | |||||||||||||
| XR | export reactor | |||||||||||||
| XRF | explosion release factor | |||||||||||||
| YAE | Yankee Atomic Electric Co. | |||||||||||||
| YAEC | Yankee Atomic Electric Co. | |||||||||||||
| YATA | York Area Transportation Authority | |||||||||||||
| YCNP | Yellow Creek Nuclear Plant | |||||||||||||
| YNHH | Yale-New Haven Hospital | |||||||||||||
| YNPS | Yankee Nuclear Power Station | |||||||||||||
| ZEA | zero energy assembly | |||||||||||||
| ZEEP | Zero Energy Experimental Pile (Canada) | |||||||||||||
| ZEPHYR | zero energy fast reactor | |||||||||||||
| ZES | zero energy system | |||||||||||||
| ZETA | Zero Energy Thermonuclear Apparatus (United Kingdom) | zero energy thermonuclear assembly | ||||||||||||
| ZETR | Zero Energy Thermal Reactor (United Kingdom) | |||||||||||||
| ZEUS | Zero Energy Uranium System (United Kingdom) | |||||||||||||
| ZGS | zero gradient synchrotron | |||||||||||||
| ZIP | zone improvement plan | |||||||||||||
| ZNP | Zion Nuclear Plant | |||||||||||||
| ZPA | zero period acceleration | |||||||||||||
| ZPMB | zero power mode bypass | |||||||||||||
| ZPPR | zero power plutonium reactor | |||||||||||||
| ZPR | zero power reactor | |||||||||||||
| ZPRF | zero power reactor facility | |||||||||||||
| ZPSS | Zion Probabilistic Safety Study | |||||||||||||
| ZTO | zero time outage | |||||||||||||
| ZWOK | zirconium-water oxidation kinetics |
| abbrev | define |
|---|---|
| ABS | Absolute (plastic pipe) |
| AGA | American Gas Association |
| ANSI | American National Standards Institute |
| API | American Petroleum Institute |
| ASME | American Society of Mechanical Eng. |
| ASSY | Assembly |
| ASTM | American Society of Testing Materials |
| ATM | Atmosphere |
| AUX | Auxiliary |
| AVG | Average |
| BB | Bolted Bonnet |
| BBE | Beveled Both End |
| BBL | Barrel |
| BC | Bolt Circle |
| BE | Beveled End |
| BF | Blind Flange, Bottom Flat |
| BLDG | Building |
| BLE | Beveled Large End |
| BLK | Black |
| BM | Bill of Material, Brass Mounted, Bench Mark |
| BOP | Bottom Of Pipe |
| B&S | Bell and Spigot |
| BSE | Beveled Small End |
| BTU | British Thermal Units |
| BW | Butt Weld |
| BWG | Birmingham Wire Gauge |
| C | Celsius, Centigrade, Hundred |
| CB | Catch Basin |
| CFD | Cubic Feet per Day |
| CFH | Cubic Feet per Hour |
| CFM | Cubic Feet per Minute |
| CI | Cast Iron |
| CO | Clean Out |
| CONC | Concentric |
| COND | Condensate |
| CONT | Continue |
| COORD | Coordinate |
| CORK | Corrosion |
| CP | Close Pattern |
| CPLG | Coupling |
| CS | Cast Steel, Carbon Steel, Cold Spring Countersink |
| CSA | Canadian Standards Assoc. |
| CSC | Car Seal Closed |
| CSO | Car Seal Open |
| C to C | Centre to Centre |
| CU | Cubic |
| C/W | Complete With |
| DBL | Double |
| DEG | Degree |
| DF | Drain Funnel |
| DIAG | Diagram |
| DIM | Dimension |
| DISCH | Discharge |
| DO | Ditto |
| DS | Double Sweep, Dummy Support |
| DWG | Drawing |
| EA | Each |
| ECC | Eccentric |
| EFW | Electronic Fusion Weld |
| EH | Extra Heavy |
| ELEV | Elevation |
| ELL | Elbow |
| ERW | Elec. Resistance Weld |
| EST | Estimate |
| E to E | End to End |
| F | Fahrenheit |
| FAB | Fabricated |
| FE | Flanged end, Flow Element |
| FF | Flat Face, Full Faced, Flange Face |
| FIG | Figure |
| FLG | Flange |
| FOB | Flat on Bottom, Freight on Board |
| FOF | Face of Flange |
| FOT | Flat on Top |
| FS | Forged Steel |
| FS | Forged Steel, Far side |
| FT | Foot, Feet |
| FTG | Fitting, Footing |
| F to F | Face to Face |
| FW | Field Weld |
| GAL | Gallon |
| GALV | Galvanized |
| GND | Ground |
| GPH | Gallons per Hour |
| GPM | Gallons per Minute |
| GR | Grade |
| HC | Hydrocarbon |
| HDR | Header |
| HEX | Hexagon |
| HP | High point, High Pressure |
| HR | Hour |
| I | Structural I Section |
| IB | Iron Body |
| ID | Inside Diameter |
| IE | Invert Elevation |
| IMP | Imperial |
| INCL | Including |
| INFO | Information |
| INS | Insulate |
| INST | Instrument |
| IPS | Iron Pipe Size, Inches per Second |
| IS | Inside Screw |
| ISO | Isometric Drawing |
| IS&Y | Inside screw & Yoke |
| JT | Joint |
| kPA | Kilopascals |
| L | Materials List |
| LB | Pound |
| LC | Lock Closed |
| LE | Large End |
| LG | Long |
| LH | Left Hand |
| LIN | Lineal |
| LO | Lock Open |
| LP | Low Point, Low Pressure |
| LR | Long Radius |
| LT | Light Wall |
| LW | Lap Weld |
| M | Meter, Million, Thousand, (Metric) (Roman) |
| MATL | Material |
| MAWP | Maximum Allowable Working Pressure |
| MAX | Maximum |
| MB | Machine Bolt |
| MFG | Manufacture |
| MH | Manhole |
| MI | Malleable Iron |
| MIN | Minimum, Minute |
| MISC | Miscellaneous |
| MK | Mark |
| MK | Mark |
| MRGL | Metal Reinforced Graphite Laminate |
| MSS | Manufacturers Standardization Society |
| MTO | Material Take-off |
| MW | Miter Welder |
| NA | Not Applicable |
| NC | Normally Closed |
| NO | Normally Open, Number |
| NOM | Nominal |
| NO or # | Number |
| NPS | Nominal Pipe Size |
| NPT | National Pipe Thread |
| NRS | Non-rising Stem |
| NS | Near Side |
| NTS | Not to Scale |
| OA | On Centres |
| OD | Outside Diameter |
| OS& Y | Outside Screw & Yoke |
| PBE | Plain Both Ends |
| PE | Plain End |
| PF | Plain Face |
| PI | Pressure Indicator |
| P&ID | Piping & Instrumentation Diagram |
| POE | Plain One End |
| PR | Pair |
| PS | Pipe Support, Pressure Switch |
| PSIA | Pounds per Square inch Absolute |
| PSIG | Pounds per Square Inch Gauge |
| PVC | Polyvinyl Chloride |
| QO | Quick Opening |
| QTY | Quantity |
| R | Radius |
| RED | Reducing, Reducer |
| REF | Reference |
| REINF | Reinforce |
| REQD | Required |
| RF | Raised Face |
| RH | Right Hand |
| RJ | Ring Joint |
| RPM | Revolutions Per Minute |
| RR | Railroad |
| RS | Rising Stem |
| RTJ | Ring Type Joint |
| SAE | Society of Automotive Engineers |
| SCH or SCHED | Schedule |
| SCR | Screwed |
| SEC | Second |
| SECT | Section |
| SF | Spot Faced |
| SKT | Socket |
| SMLS | Seamless |
| SO | Slip-on |
| S.O.L. | Sock-o-let |
| SPEC | Specification |
| SQ | Square |
| SR | Short Radius |
| SS | Stainless Steel |
| ST | Steam Trap |
| STA | Station |
| STD | Standard |
| STL | Steel |
| STM | Steam |
| S to S | Seam to Seam |
| STR | Straight |
| SUCT | Suction |
| SW | Socket Welding |
| SWG | Swage |
| SWP | Steam Working Pressure |
| SYM | Symmetrical |
| SYS | System |
| TBE | Threaded Both Ends |
| T&C | Thread and Coupled |
| TC | Test Connection |
| TE | Threaded End |
| TF | Top Flat |
| T&G | Tongue and Groove |
| TGT | Tangent |
| THK | Thick |
| TMP | To Match Pipe |
| TOC | Top of Concrete |
| TOE | Threaded One End |
| T.O.L. | Thread-o-let |
| TOS | Top Of Steel |
| TPI | Threads Per Inch |
| TSE | Threaded Small End |
| TSS | Temporary Suction Strainer |
| T-T | Tangent to Tangent |
| T,TEMP | Temperature |
| TYP | Typical |
| UG | Underground |
| UNC | Unified Coarse Thread |
| UNF | Unified Fine Thread |
| VAC | Vacuum |
| VERT | Vertical |
| WB | Welded Bonnet |
| WE | Welded End |
| WF | Wide Flange Structural |
| WN | Welding Neck |
| W/O | Without |
| WOG | Water, Oil and Gas |
| W.O.L. | Weld-o-let |
| WP | Working Pressure |
| WT | Weight, Wall Thickness |
| XH | Extra Heavy |
| XS | Extra Strong |
| XXH | Double Extra Heavy |
| XXS | Double Extra Strong |
| abbrev | define |
|---|---|
| 1C | Proved Contingent Resources |
| 1P | Proven reserves |
| 2C | Proved and probable Contingent Resources |
| 2D | two-dimensional (geophysics) |
| 2P | proved and probable reserves |
| 3C | three components seismic acquisition (x,y and z) |
| 3C | Proved, probable and possible Contingent Resources |
| 3D | three-dimensional (geophysics) |
| 3P | proved, probable and possible reserves |
| 4D | multiple 3Ds acquired over time (the 4th D) over the same area with the same parameters (geophysics) |
| 8rd | eight round (describes the number of revolutions per inch of pipe thread) |
| A | Appraisal (well) |
| AADE | American Association of Drilling Engineers[1] |
| AAPG | American Association of Petroleum Geologists[2] |
| AAPL | American Association of Professional Landmen |
| AAODC | American Association of Oilwell Drilling Contractors (obsolete; superseded by IADC) |
| AAV | Annulus Access Valve |
| ABAN | Abandonment, (also as AB and ABD) |
| ABSA | Alberta Boilers Safety Association |
| ACHE | Air-Cooled Heat Exchanger |
| ACOU | Acoustic |
| ACQU | Acquisition log |
| ADE | Advanced Decision Making Environment |
| ADEP | Awaiting Development with Exploration Potential, referring to an asset |
| ADROC | advanced rock properties report |
| ADT | Applied Drilling Technology, ADT log |
| ADM | Advanced Diagnostics Module (Fieldbus) |
| AFE | Authorization For Expenditure, a process of submitting a business proposal to investors |
| AFP | Active Fire Protection |
| AGRU | acid gas removal unit |
| AGT | Agitator, used in Drilling |
| AHBDF | along hole (depth) below Derrick floor |
| AHD | along hole depth |
| AHU | Air Handling Unit |
| AICD | autonomous inflow control device |
| AIPSM | Asset Integrity and Process Safety Management |
| AIR | Assurance Interface and Risk |
| AIRG | airgun |
| AIRRE | airgun report |
| AIT | array induction tool |
| AL | appraisal license (United Kingdom), a type of onshore licence issued before 1996 |
| ALAP | as low as possible (used along with density of mud) |
| ALARP | as low as reasonably practicable |
| ALC | aertical seismic profile acoustic log calibration report |
| ALLMS | Anchor Leg Load Monitoring System |
| ALQ | Additional Living Quarters |
| ALR | acoustic log report |
| aMDEA | activated methyldiethanolamine |
| AMS | auxiliary measurement service log; Auxiliary Measurement Sonde (temperature) |
| AMSL | above mean sea level |
| AMI | area of mutal interest |
| AMV | annulus master valve[3] |
| ANACO | analysis of core logs report |
| ANARE | analysis report |
| AOF | absolute open flow |
| AOFP | absolute open-flow potential |
| AOL | Arrive on location |
| APD | application for permit to drill |
| API | American Petroleum Institute: organization which sets unit standards in the oil and gas industry |
| APPRE | appraisal report |
| APS | active pipe support |
| APWD | annular pressure while drilling (tool) [2] |
| ARACL | array acoustic log |
| ARESV | analysis of reservoir |
| ARI | azimuthal resistivity image |
| ARRC | array acoustic report |
| ART | actuator running tool |
| AS | array sonic processing log |
| ASI | ASI log |
| ASME | American Society of Mechanical Engineers |
| ASOG | Activity Specific Operating Guidelines |
| ASP | array sonic processing report |
| ASP | Alkali-Surfactant-Polymer |
| ASTM | American Society for Testing and Materials |
| ASCSSV | annulus surface controlled sub-surface valve[3] |
| ASV | Anti Surge Valve |
| ASV | Annular Safety Valve |
| ASV | Accommodation and Support Vessel |
| ATD | application to drill |
| ATU | Auto Top-up Unit |
| AUV | authonomus underwater vehicle |
| AV | annular velocity or apparent viscosity |
| AVGMS | Annulus Vent Gas Monitoring System |
| AVO | amplitude versus offset (geophysics) |
| AWB/V | annulus wing block/valve (XT) |
| AWO | approval for well operation |
| ATM | at the moment |
| B or b | prefix denoting a number in billions |
| BA | Bottom Assembly (of a riser) |
| bbl | barrel |
| BBG | Buy Back Gas |
| BBSM | behaviour-based safety management |
| BCPD | barrels condensate per day |
| Bcf | billion cubic feet (of natural gas) |
| Bcfe | billion cubic feet (of natural gas equivalent) |
| BDF | below derrick floor |
| BDL | bit data log |
| BDV | blowdown valve |
| BGL | borehole geometry log |
| BGL | below ground level (used as a datum for depths in a well) |
| BGS | British Geological Survey |
| BGT | borehole geometry tool |
| BGWP | base of ground-water protection |
| BH | bloodhound |
| BHA | bottom hole assembly (toolstring on coiled tubing or drill pipe) |
| BHC | BHC gamma ray log |
| BHCA | BHC acoustic log |
| BHCS | BHC sonic log |
| BHCT | bottomhole circulating temperature |
| BHL | borehole log |
| BHP | bottom hole pressure |
| BHPRP | borehole pressure report |
| BHSRE | bottom hole sampling report |
| BHSS | borehole seismic survey |
| BHT | bottomhole temperature |
| BHTV | borehole television report |
| BINXQ | bond index quicklook log |
| BIOR | biostratigraphic range log |
| BIORE | biostratigraphy study report |
| BSLM | Bend Stiffener Latch Mechanism |
| BIVDL | BI/DK/WF/Casing collar locator/gamma ray log |
| BLI | bottom of logging interval |
| BO | back-off log |
| boe | barrel(s) of oil equivalent |
| boed | barrel(s) of oil equivalent per day |
| BOEM | Bureau of Ocean Energy Management |
| boepd | barrel(s) of oil equivalent per day |
| BOB | back on bottom |
| BOD | Biological Oxygen Demand |
| BOL | Bill of Lading |
| BOM | bill of materials |
| BOP | blowout preventer |
| BOP | bottom of pipe |
| BOPD | barrel(s) of oil per day |
| BOPE | blowout prevention equipment |
| BOREH | borehole seismic analysis |
| BOSIET | basic offshore safety induction and emergency training |
| BOTHL | bottom hole locator log |
| BOTTO | bottom hole pressure/temperature report |
| BP | bridge plug |
| BPD | barrels per day |
| BPH | barrels per hour |
| BPFL | borehole profile log |
| BPLUG | baker plug |
| BPO | By-Pass Override |
| BPV | back pressure valve (goes on the end of coiled tubing a drill pipe tool strings to prevent fluid flow in the wrong direction) |
| BQL | B/QL log |
| BRPLG | bridge plug log |
| BRT | below rotary table (used as a datum for depths in a well) |
| BS | Bend Stiffener |
| BS | bumper sub |
| BS | Booster Station |
| BSEE | US: Bureau of Safety and Environmental Enforcement[4] (formerly the MMS) |
| BSG | Black Start Generator |
| BSR | blind shear rams (blowout preventer) |
| BSML | below sea mean level |
| BS&W | basic sediments and water |
| BT | buoyancy tank |
| BTEX | benzene, toluene, ethyl-benzene and xylene |
| BTHL | bottom hole log |
| BTO/C | break to open/close (valve torque) |
| BTU | British thermal units |
| BU | bottom up |
| BUL | bottom up lag |
| BUR | build-up rate |
| BVO | ball valve operator |
| bwd | barrels of water per day (often used in reference to oil production) |
| bwpd | barrels of water per day |
| C&E | well completion and equipment cost |
| C&S | cased and suspended |
| C1 | methane |
| C2 | ethane |
| C3 | propane |
| C4 | butane |
| C6 | hexanes |
| C7+ | heavy hydrocarbon components |
| CA | core analysis log |
| CAAF | Contract Authorization Approval Form |
| CALI | calliper log |
| CALOG | circumferential acoustic log |
| CALVE | calibrated velocity log data |
| CAODC | Canadian Association of Oilwell Drilling Contractors |
| CAPP | Canadian Association of Petroleum Producers |
| CART | cam-actuated running tool (housing running tool) |
| CART | Cap Replacement Tool |
| CAS | casing log |
| CAT | Connector Actuating Tool |
| CB | core barrel |
| CBIL | CBIL log |
| CBL | cement bond log (measurement of casing cement integrity) |
| CBM | choke bridge module – XT choke |
| CBM | conventional buoy mooring |
| CBM | coal-bed methane |
| CCHT | core chart log |
| CCL | casing collar locator (in perforation or completion operations, the tool provides depths by correlation of the casing string’s magnetic anomaly with known casing features) |
| CCLBD | Construction / Commissioning Logic Block Diagram |
| CCLP | casing collar locator perforation |
| CCLTP | casing collar locator through tubing plug |
| CD | core description |
| CDATA | core data |
| CDIS | CDI synthetic seismic log |
| CDU | control distribution unit |
| CDU | crude distillation unit |
| CDP | common depth point (geophysics) |
| CDP | comprehensive drilling plan |
| CDRCL | compensated dual resistivity cal. log |
| CDFT | critical device function test |
| CE | CE log |
| CERE | cement remedial log |
| CECAN | CEC analysis |
| CEME | cement evaluation |
| CER | Central Electrical/Equipment Room |
| CET | cement evaluation tool |
| CF | completion fluid |
| CFD | computational fluid dynamics |
| CFU | Compact flotation unit |
| CGEL | CG EL log |
| CGL | core gamma log |
| CGPH | core graph log |
| CGR | condensate gas ratio |
| CGTL | compact gas to liquids (production equipment small enough to fit on a ship) |
| CHCNC | CHCNC gamma ray casing collar locator |
| CHDTP | calliper HDT playback log |
| CHECK | checkshot and acoustic calibration report |
| CHESM | contractor, health, environment and safety management |
| CHF | Casing Head Flange |
| CHKSR | checkshot survey report |
| CHKSS | checkshot survey log |
| CHOPS | Cold Heavy Oil Production with Sand |
| CHP | casing hanger pressure (pressure in an annulus as measured at the casing hanger) |
| CHOTO | Commissioning, Handover & Takeover |
| CHROM | chromatolog |
| CHRT | casing hanger running tool |
| CIBP | cast iron bridge plug |
| CIDL | chemical injection downhole lower |
| CIDU | chemical injection downhole upper |
| CIL | chemical injection line |
| CILD | conduction log |
| CIMV | chemical injection metering valve |
| CIRC | CIRCULATION |
| CITHP | closed-in tubing head pressure (tubing head pressure when the well is shut in) |
| CIV | chemical injection valve |
| CL | core log |
| CLG | core log and graph |
| CM | choke module |
| CMC | crown mounted compensators |
| CMP | common midpoint (geophysics) |
| CMR | Combinable Magnetic Resonance (NMR log tool) [3][4] |
| CND | compensated neutron density |
| CNFDP | CNFD true vertical-depth playback log |
| CNGR | compensated neutron gamma-ray log |
| CNL | compensated neutron log |
| CNLFD | CNL/FDC log |
| CNS | Central North Sea |
| CNCF | field-normalised compensated neutron porosity |
| CNR | Canadian Natural Resoures |
| CO | change out (ex. from rod equipment to casing equipment) |
| COA | Conditions of Approval |
| COC | Certificate of Conformance |
| COD | Chemical Oxygen Demand |
| COL | collar log |
| COMAN | compositional analysis |
| COML | compaction log |
| COMP | composite log |
| COMPR | completion program report |
| COMPU | computest report |
| COMRE | completion record log |
| CONDE | condensate analysis report |
| CONDR | continuous directional log |
| CORAN | core analysis report |
| CORE | core report |
| CORG | corgun log |
| CORIB | coriband log |
| CORLG | correlation log |
| COROR | core orientation report |
| COW | Control of Work |
| COXY | carbon/oxygen log |
| CP | Cathodic Protection |
| cP | centiPoise (Viscosity unit of measurement) |
| CPI separator | corrugated plate interceptor |
| CPI | CPI log (computer-processed interpretation), CPI (corrugated plate interceptor) |
| CPICB | CPI coriband log |
| CPIRE | CPI report |
| CRA | corrosion-resistant alloy |
| CRET | cement retainer setting log |
| CRP | control riser platform |
| CRP | common/central reference point (subsea survey) |
| CRT | Clamp Replacement tool |
| CRT | Casing Running Tool |
| CSE | Confined Space Entry |
| CsF | Caesium formate (coincidentally also an acronym of the sole large-scale supplier of caesium formate brine, cabot specialty fluids.) |
| CSG | Coal Seam Gas |
| csg | casing |
| CSHN | cased-hole neutron log |
| CSI | Combinable Seismic Imager (VSP) log (Schlumberger) |
| CSMT | core sampler tester log |
| CSO | complete seal-off |
| CSPG | Canadian Society of Petroleum Geologists |
| CSR | Corporate Social Responsibility |
| CST | Chronological Sample Taker log (Schlumberger) |
| CSTAK | core sample taken log |
| CSTRE | CST report |
| CSU | Commissioning and Start Up |
| CSUG | Canadian Society for Unconventional Gas |
| CT | coiled tubing |
| CTD | coiled tubing drilling |
| CTCO | coiled tubing clean-out |
| CTLF | coiled tubing lift frame |
| CTLF | compensated tension lift frame |
| CTOD | crack tip opening displacement |
| CTP | Commissioning Test Procedure |
| CTRAC | cement tracer log |
| CUI | Corrosion Under Insulation |
| CUT | cutter log |
| CUTTD | cuttings description report |
| CWOP | complete well on paper |
| CWOR | completion work over riser |
| X/O | X-Over,Cross Over |
| CYBD | cyberbond log |
| CYBLK | cyberlook log |
| CYDIP | cyberdip log |
| CYDN | cyberdon log |
| CYPRO | cyberproducts log |
| D | Development |
| D&C | drilling and completions |
| D&I | direction and inclinitation (MWD borehole deviation survey) |
| DAC | dipole acoustic log |
| DARCI | Darci log |
| DAS | Data Acquisition System |
| DAT | wellhead housing drill-ahead tool |
| DAZD | dip and azimuth display |
| DBB | double block and bleed |
| DBP | drillable bridge plug |
| DC | drill centre |
| DC | drill collar(s) |
| DCAL | dual caliper log |
| DCC | Distance cross course |
| DCS | Distributed Control System |
| DD | directional driller or directional drilling |
| DDC | daily drilling cost |
| DDC | De-watering and Drying Contract |
| DDBHC | DDBHC waveform log |
| DDET | depth determination log |
| DDM | Derrick drilling machine (a.k.a. top drive) |
| DDNL | dual det. neutron life log |
| DDPT | drill data plot log |
| DDPU | Double drum pulling unit |
| DEA | diethanol amine |
| DECC | Department for Energy and Climate Change (UK) |
| DECT | decay time |
| DEFSU | definitive survey report |
| DEH | Direct Electrical Heating |
| DELTA | delta-T log |
| DEN | density log |
| DEPAN | deposit analysis report |
| DEPC | depth control log |
| DEPT | depth |
| DESFL | deep induction SFL log |
| DEV | development well, Lahee classification |
| DEVLG | deviation log |
| DEXP | D-exponent log |
| DF | Derrick floor |
| DFI | Design, Fabrication and Installation résumé |
| DFIT | Diagnostic Fracture Injection Test |
| DFR | drilling factual report |
| DGDS | Dual Gradient Drilling Systems |
| DGP | dynamic geohistory plot (3D technique) |
| DH | drilling history |
| DHC | depositional history curve |
| DHSV | downhole safety valve |
| DHPG | downhole pressure gauge |
| DHPTT | downhole pressure/temperature transducer |
| DIBHC | DIS BHC log |
| DIEGR | dielectric gamma ray log |
| DIF | drill in fluids |
| DIL | dual-induction log |
| DILB | dual-induction BHC log |
| DILL | dual-induction laterolog |
| DILLS | dual-induction log-LSS |
| DILSL | dual-induction log-SLS |
| DIM | directional inertia mechanism |
| DINT | dip interpretation |
| DIP | dipmeter log |
| DIPAR | dipole acoustic report |
| DIPBH | dipmeter borehole log |
| DIPFT | dipmeter fast log |
| DIPLP | dip lithology pressure log |
| DIPRE | dipmeter report |
| DIPRM | dip removal log |
| DIPSA | dipmeter soda log |
| DIPSK | dipmeter stick log |
| DIRS | directional survey log |
| DIRSU | directional survey report |
| DIS | DIS-SLS log |
| DISFL | DISFL DBHC gamma ray log |
| DISO | dual induction sonic log |
| DL | development license (United Kingdom), a type of onshore license issued before 1996 |
| DLIST | dip-list log |
| DLL | dual laterolog (deep and shallow resistivity) |
| DLS | dog-leg severity (directional drilling) |
| DM | dry mate |
| DMA | dead-man anchor |
| DMAS | dead-man auto-shear DMAS |
| DMRP | Density – Magnetic Resonance Porosity (wireline tool) |
| DMT | Down hole Monitoring Tool |
| DNHO | downhole logging |
| DOA | delegation of authority |
| DOE | Department of Energy, United States |
| DOWRE | downhole report |
| DP | drill pipe |
| DP | dynamic positioning |
| DPDV | dynamically positioned drilling vessel |
| DPL | dual propagation log |
| DPLD | differential pressure levitated device (or vehicle) |
| DPRES | dual propagation resistivity log |
| DPT | deeper pool test, Lahee classification |
| DQLC | dipmeter quality control log |
| DR | dummy-run log |
| DR | drilling report |
| DRI | drift log |
| DRL | Drilling |
| DRLCT | drilling chart |
| DRLOG | drilling log |
| DRLPR | drilling proposal/progress report |
| DRO | Discovered Resources Opportunities |
| DRPG | drilling program report |
| DRPRS | drilling pressure |
| DRREP | drilling report |
| DRYRE | drying report |
| DS | Deviation survey, (also directional system) |
| DSCAN | DSC analysis report |
| DSI | dipole shear imager |
| DSL | digital spectralog (Western Atlas) |
| DSPT | cross-plots log |
| DST | drill-stem test |
| DSTG | DSTG log |
| DSTL | drill-stem test log |
| DSTND | dual-space thermal neutron density log |
| DSTPB | drill-stem test true vertical depth playback log |
| DSTR | drill-stem test report |
| DSTRE | drill-stem test report |
| DSTSM | drill-stem test summary report |
| DSTW | drill-stem test job report/works |
| DSU | drill spacing unit |
| DSV | diving support vessel or drilling supervisor |
| DTI | Department of Trade and Industry (UK) (obsolete; superseded by dBERR, which was then superseded by DECC) |
| DTPB | CNT true vertical-depth playback log |
| DTT | depth to time |
| DUC | Dilled but Uncompleted Wells |
| DVT | Differential Valve Tool (for cementing multiple stages) |
| DWOP | drilling well on paper (a theoretical exercise conducted involving the service-provider managers) |
| DWQL | dual-water quicklook log |
| DWSS | dig-well seismic surface log |
| DXC | DXC pressure pilot report |
| E | Exploration |
| E&A | Exploration and Appraisal |
| E&I | Electrical and Instrumentation |
| E&P | Exploration and Production |
| EA | Exploration Asset |
| EAGE | European Association of Geoscientists & Engineers[6] |
| ECD | Equivalent Circulating Density |
| EDG/EDGE | Emergency Diesel Generator |
| ECMS | Electrical Control and Monitoring System |
| ECMWF | European Centre for Medium-Range Weather Forecasts |
| ECP | External Casing Packer |
| ECRD | Electrically Controlled Release Device (for abandoning stuck wireline tool from cable) |
| ECT | External Cantilevered Turret |
| EDP | Exploration Drilling Program Report |
| EDP | Emergency Disconnect Package |
| EDP | Emergency Depressurisation |
| EDPHOT | Emergency Drill Pipe Hang Off Toool |
| EDR | Exploration Drilling Report |
| EDR | Electronic Drilling Recorder |
| EDS | Emergency Disconnection Sequence |
| EEAR | Emergency Electrical Auto Restart |
| EEHA | Electrical Equipment for Hazardous Areas (IECEx) |
| EFL | Electrical Flying Lead |
| EFR | Engineering Factual Report |
| EHT | Electric Heat Trace |
| EGMBE | Ethylene Glycol Mono-Butyl Ether |
| EHU | Electro-Hydraulic Unit |
| EIA | Environmental Impact Assessment |
| ELEC TECH | Electronics Technician (See also: ETech) |
| ELT | Economic Limit Test |
| EL | Electric Log |
| EM | EMOP Log |
| EMCS | Energy Management and Control Systems |
| EMD | Equivalent Mud Density |
| EMG | Equivalent Mud Gradient |
| EMOP | EMOP Well Site Processing Log |
| EMP | Electromagnetic Propagation Log |
| EMS | Environment measurement sonde (wireline multi-caliper) [6] |
| EMW | Equivalent Mud Weight |
| EN PI | Enhanced Productivity Index Log |
| ENG | Engineering Log |
| ENGF | Engineer Factual Report |
| ENGPD | Engineering Porosity Data |
| Eni | Ente Nazionale Idrocarburi S.p.A. (Italy)[7] |
| ENJ | Enerjet Log |
| ENMCS | Electrical Network Monitoring and Control System |
| EOFL | End of Field Life |
| EOR | Enhanced Oil Recovery |
| EOT | End of Tubing |
| EOT | Electric Overhead Travelling |
| ELV | Extra Low Voltage |
| EOW | End Of Well Report |
| EPCM/I | Engineering Procurement Construction & Management/Installation |
| EPCU | Electrical Power Conditioning Unit |
| EPIDORIS | Exploration and Production Integrated Drilling Operations and Reservoir Information System |
| EPL | EPL Log |
| EPLG | Epilog |
| EPLPC | EPL-PCD-SGR Log |
| EPS | Early Production System |
| EPT | Electromagnetic Propagation |
| EPU | Electrical Power Unit |
| EPTNG | EPT-NGT Log |
| EPV | Early Production Vessel |
| ER(D) | Extended Reach (Drilling) |
| ERT | Emergency Response Training |
| ESD | Emergency Shut-Down |
| ESHIA | Environmental, Social and Health Impact Assessment |
| ESIA | Environmental and Social Impact Assessment |
| ESP | Electric Submersible Pump |
| ETAP | Eastern Trough Area Project |
| ETD | External Turret Disconnectable |
| ETECH | Electronics Technician (See also: Elec Tech) |
| ETTD | Electromagnetic Thickness Test |
| ETU | Electrical Test Unit |
| EUE | External-upset-end (tubing connection) |
| EUR | Estimated Ultimate Recovery |
| EVARE | Evaluation Report |
| EWMP | Earthworks/Electrical Works/Excavation Works Management Plan |
| EWR | End Of Well Report |
| EXL | or XL, Exploration Licence (United Kingdom), a type of onshore licence issued between the First Onshore Licensing Round (1986) and the Sixth (1992) |
| EZSV | EZSV Log |
| FAC | factual report |
| FAC | first aid case |
| FACHV | four-arm calliper log |
| FANAL | formation analysis sheet log |
| FAT | factory acceptance testing |
| FBE | fusion-bonded epoxy |
| FC | float collar |
| FCGT | Flood Clean Gauge Test |
| FCP | final circulating pressure |
| FCV | Flow Control Valve |
| FCVE | F-curve log |
| FDC | formation density log |
| FDF | Forced Draft Fan |
| FDP | Field Development Plan |
| FDS | functional design specification |
| FEED | front-end engineering design |
| FER | field equipment room |
| FEWD | formation evaluation while drilling |
| FFAC | formation factor log |
| FFM | full field model |
| FG | Fiberglass |
| FGHT | Flood Gauge Hydrotest |
| FRP | Fiberglass Reinforced Plastics |
| FGEOL | final geological report |
| FH | full-hole tool joint |
| FI | final inspection |
| FID | final investment decision |
| FID | flame ionisation detection |
| FIL | FIL log |
| FI(M) | free issue (materials) |
| FINST | final stratigraphic report |
| FINTP | formation interpretation |
| FIP | flow-induced pulsation |
| FIT | fairing intervention tool |
| FIT | fluid identification test |
| FIT | formation integrity test |
| FIT | formation interval tester |
| FIV | flow-induced vibration |
| FIV | formation isolation valve |
| FJC | Field Joint Coating |
| FL | F log |
| FLAP | fluid level above pump |
| FLDF | Flying Lead Deployment Frame |
| FLIV | flowline injection valve |
| FLIV | flowline isolation valve |
| FLET | Flowline End Termination |
| aFLET | Actuated Flowline End Termination |
| FLNG | Floating liquefied natural gas |
| FLOG | FLOG PHIX RHGX Log |
| FLOPR | flow profile report |
| FLOT | flying lead orientation tool |
| FLOW | flow and buildup test report |
| FLRA | field-level risk assessment |
| FLS | fluid sample |
| FLT | fault (geology) |
| FMD | Flooded Member Detection |
| FMEA | failure modes, & effects analysis |
| FMECA | failure modes, effects, and criticality analysis |
| FMI | formation micro imaging log (azimuthal microresistivity) |
| FMP | formation microscan report |
| FMP | Field Management Plan |
| FMS | formation multi-scan log; formation micro-scan log |
| FMS | Flush Mounted Slips |
| FMT | Flow Management Tool |
| FMTAN | FMT analysis report |
| FOBOT | Fibre Optic Break Out Tray |
| FOET | Further Offshore Emergency Training |
| FOF | Face of Flange |
| FOSA | Field Operating Services Agreement |
| FOSV | full-opening safety valve |
| FPDM | fracture potential and domain modelling/mapping[8][9] |
| FPH | feet per hour |
| FPIT | free-point indicator tool |
| FPL | flow analysis log |
| FPLAN | field plan log |
| FPS | field production system |
| FPO | Floating Production and Offloading – vessel with no or very limited (process only) on-board produced fluid storage capacity. |
| FPSO | Floating Production Storage and Offloading vessel |
| FPU | floating processing unit |
| FRA | fracture log |
| FRARE | fracture report |
| FRES | final reserve report |
| FS | fail safe |
| FSB | flowline support base |
| FSI | flawless start-up initiative |
| FSLT | Flexible Sealine Lifting Tool |
| FSO | floating storage offloading vessel |
| FSR | Facility Status Report |
| FT | formation tester log |
| FTM | fire-team member |
| FTP | first tranche petroleum |
| FTR | Function Test Report |
| FTRE | formation testing report |
| FULDI | full diameter study report |
| FV | funnel viscosity or float valve |
| FWHP | flowing well-head pressure |
| FWKO | free water knock-out |
| FWL | free water level |
| FWR | final well report |
| FWV | flow wing valve (also known as production wing valve on a xmas tree) |
| F_L | FNL/FEL, from north/east line |
| G/C | Gas Condensate |
| GC | Gathering Center |
| G&P | Gathering and Processing |
| G&T | Gathering and Transportation |
| GALT | Gross Air Leak Test |
| GAS | Gas Log |
| GASAN | Gas Analysis Report |
| GBS | Gravity Based Structure |
| GBT | Gravity Base Tank |
| GCLOG | Graphic Core Log |
| GCT | GCT Log |
| GDAT | Geodetic Datum |
| GDE | Gross Depositional Environment |
| GDIP | Geodip Log |
| GDT | Gas Down To |
| GE | Condensate gas equivalent |
| GE | Ground Elevation (also [GR or GRE]) |
| GEOCH | Geochemical Evaluation |
| GEODY | GEO DYS Log |
| GEOEV | Geochemical Evaluation Report |
| GEOFO | Geological & Formation Evaluation Report |
| GEOL | Geological Surveillance Log |
| GEOP | Geophone Data Log |
| GEOPN | Geological Well Prognosis Report |
| GEOPR | Geological Operations Progress Report |
| GEORE | Geological Report |
| GGRG | Gauge Ring |
| GIIP | Gas Initially In Place |
| GIH | Go In Hole |
| GIS | Geographic Information System |
| GL | Gas Lift |
| GL | Ground Level |
| GLE | Ground Level Elevation (generally in metres above mean sea level) |
| GLM | Gas Lift Mandrel (alternative name for Side Pocket Mandrel) |
| GLR | Gas Liquid Ratio |
| GLT | GLT Log |
| GLV | Gas Lift Valve |
| GOC | Gas Oil Contact |
| GOM | Gulf of Mexico |
| GOP | Geological Operations Report |
| GOR | Gas Oil Ratio |
| GOSP | Gas/Oil Separation Plant |
| GPIT | General Purpose Inclinometry Tool (borehole survey) [7] |
| GPLT | Geol Plot Log |
| GPTG | Gallons Per Thousand Gallons |
| GPM | Gallons Per Mcf |
| GPSL | Geo Pressure Log |
| GR | Ground Level (or Elevation //(also [GE or GRE])) or Gamma Ray. Or Gauge Ring (measure hole size) |
| GRAD | Gradiometer Log |
| GRE | Ground Elevation (also [GR or GE]) |
| GRLOG | Grapholog |
| GRN | Gamma Ray Neutron Log |
| GRP | Glass Reinforced Plastic |
| GRV | Gross Rock Volume |
| GRSVY | Gradient Survey Log |
| GS | Gas Supplier |
| GS | Gel Strength |
| GST | GST Log |
| GTC/G | Gas Turbine Compressor/Generator |
| GTL | Gas To Liquid |
| GTW | Gas To Wire |
| GUN | Gun Set Log |
| GWC | Gas-Water Contact |
| GWR | Guided Wave Radar |
| GWREP | Geo Well Report |
| HAZ | Heat Affected Zone |
| HAZID | Hazard Identification (meeting) |
| HAZOP | Hazard and Operability Study (meeting) |
| HBE | High Build Epoxy |
| HBP | Held By Production |
| HC | Hydrocarbons |
| HCAL | HRCC Calliper (in Logs)(in Inches) |
| HCCS | Horizontal Clamp Connection System |
| HCM | Horizontal Connection Module. To connect the Xmas Tree to the Manifold |
| HCS | High-Capacity Square mesh screens |
| HDA | Helideck Assistant |
| HDD | Horizontal Directional Drilling |
| HDPE | High Density Polyethylene |
| HDT | High Resolution Dipmeter Log |
| HDU | Horizontal Drive Unit |
| HEXT | Hex Diplog |
| HFE | Human Factors Engineering |
| HFL | Hydraulic Flying Lead |
| HGO | Heavy Gas Oil |
| HGS | High (Specific-)Gravity Solids |
| HH | Horse Head (on pumping unit) |
| HHP | Hydraulic Horsepower |
| HI | Hydrogen Index |
| HIPPS | High Integrity Pressure Protection System |
| HIRA | Hazard Identification and Risk Assessment |
| HISC | Hydrogen induced stress cracking |
| HL | Hook Load |
| HLCV | Heavy Lift Crane Vessel |
| HLO | Heavy Load-out (Facility) |
| HLO | Helicopter Landing Officer |
| Hmax | Maximum Wave Height |
| HNGS | flasked Hostile Natural Gamma-ray Spectrometry tool [8] |
| HOB | Hang on bridle (cable assy) |
| HP | Hydrostatic Pressure |
| HPGAG | High Pressure Gauge |
| HPHT | High Pressure High Temperature (same as HTHP) |
| HPPS | HP Pressure Log |
| HPU | Hydraulic Power Unit |
| HPWBM | High Performance Water Base Mud |
| HRCC | HCAl of Calliper (in Inches) |
| HRLA | High Resolution Laterolog Array (resistivity logging tool) |
| HRF | Hyperbaric Rescue Facility/Vessel |
| Hs | Significant Wave Height |
| HSE | Health, Safety and Environment or Health & Safety Executive (United Kingdom) |
| HSV | Hyperbaric Support Vessel |
| HTHP | High Temperature High Pressure (same as HPHT) |
| HTM | Helideck Team Member |
| HVDC | High Voltage Direct Current |
| HWDP | Heavy-Weight Drill Pipe (sometimes spelled Hevi-Wate) |
| HUD | Hold Up Depth |
| HUN | Hold Up Nipple |
| HUET | Helicopter Underwater Escape Training |
| HWDP | Heavy Weight Drill Pipe |
| HYPJ | Hyperjet |
| HYROP | Hydrophone Log |
| I:P | Injector To Producer Ratio |
| IADC | International Association of Drilling Contractors |
| IAT | Internal Active Turret |
| IBC | Intermediate Bulk Container |
| ICoTA | Intervention and Coiled Tubing Association |
| ICC | Isolation Confirmation Certificate |
| ICD | Inflow Control Device |
| ICEX;IECEx | International Electrotechnical Commission System for Certification to standards relating to equipment for use in Explosive Atmospheres (EEHA) |
| ICP | Initial Circulating Pressure |
| ICP | Intermediate Casing Point |
| ICSS | Integrated Controls and Safety System |
| ICSU | Integrated Commissioning and Start Up |
| ICV | Interval Control Valve |
| ICV | Integrated Cement Volume (of Borehole)(in Cubic Metres) |
| ICW | InComplete Work |
| ID | Inner or Internal Diameter (of a tubular component such as a casing) |
| IDC | Intangible Drilling Costs |
| IDEL | IDEL Log |
| IEB | Induction Electro BHC Log |
| IEL | Induction Electrical Log |
| IF | Internal Flush tool joint |
| iFLS | intelligent fast load shedding |
| IGPE | Immersion Grade Phenolic Epoxy |
| IGV | Inlet Guide Vane |
| IH | Gamma Ray Log |
| IHEC | Isolation of Hazardous Energy Certificate |
| IHUC | Installation, Hook-Up and Commissioning |
| IHV | Integrated Hole Volume (of Borehole) (in Cubic Metres) |
| IIC | Infield Installation Contractor |
| IJL | Injection Log |
| IL | Induction Log |
| ILI | InLine Inspection (Intelligent Pigging) |
| ILOGS | Image Logs |
| ILT | In-Line Tee |
| IMAG | Image Analysis Report |
| IMCA | International Marine Contractors Association |
| IMPP | Injection Molded Polypropylene Coating System |
| IMR | Inspection Maintenance and Repair |
| INCR | Incline Report |
| INCRE | Incline Report |
| INDRS | IND RES Sonic Log |
| INDT | INDT Log |
| INDWE | Individual Well Record Report |
| INJEC | Injection Falloff Log |
| INSUR | Inrun Survey Report |
| INVES | Investigative Program Report |
| IOC | International Oil Company |
| IOM | Installation, Operation and Maintenance Manual |
| IPAA | Independent Petroleum Association of America |
| IPC | Installed Production Capacity |
| IPLS | IPLS Log |
| IPR | Inflow Performance Relationship |
| IPT | Internal Passive Turret |
| IR | Interpretation Report |
| IRC | Inspection Release Certificate |
| IRTJ | IRTJ Gamma Ray Slimhole Log |
| ISF | ISF Sonic Log |
| ISFBG | ISF BHC GR Log |
| ISFCD | ISF Conductivity Log |
| ISFGR | ISF GR Casing Collar Locator Log |
| ISFL | ISF-LSS Log |
| ISFP | ISF Sonic True Vertical Depth Playback Log |
| ISFPB | ISF True Vertical Depth Playback Log |
| ISFSL | ISF SLS MSFL Log |
| ISIP | Initial Shut In Pressure |
| ISSOW | Integrated Safe System of Work |
| ISV | Infield Support Vessel |
| ITD | Internal Turret Disconnectable |
| ITR | Inspection Test Record |
| ITS | Influx To Surface |
| ITT | Internal Testing Tool. (For BOP test). |
| IUG | Instrument Utility Gas |
| IWCF | International Well Control Federation |
| IWOCS | Installation / Workover Control System |
| J&A | Junked and Abandoned |
| JB | Junk Basket |
| JIB | Joint Interest Billing |
| JLT | J-Lay Tower |
| JT | Joule-Thomson (effect/valve/separator) |
| JTS | Joints |
| JU | Jack-Up drilling rig |
| JV | Joint Venture |
| JVP | Joint Venture Partners/Participants |
| KBE | Kelly Bushing Elevation (in meters above sea level, or meters above Ground Level) |
| KBUG | Kelly Bushing under ground (drilling up in coal mines, West Virginia, Baker & Taylor Drilling) |
| KCI | Potassium Chloride (KCI) mud |
| KD | Kelly Down |
| KMW | Kill Mud Weight |
| KOP | Kick-Off Point Directional Drilling |
| KOP | Kick Off Plug |
| KP | Kilometre post |
| KRP | Kill Rate Pressure |
| KB | Kelly Bushing |
| KBG | Kelly Bushing Height above Ground Level |
| KT | Kill Truck |
| LACT | Lease Automatic Custody Transfer |
| LAH | Lookahead |
| LAOT | Linear Activation Override Tool |
| LARS | Launch & Recovery System |
| LAS | Log ASCII Standard |
| LAT | Lowest Astronomical Tide |
| LCM | Lost Circulation Material |
| LCNLG | LDT CNL Gamma Ray Log |
| LD | Lay Down (tubing, rods, etc.) |
| LDAR | Leak Detection and Repair |
| LDHI | Low Dosage Hydrate Inhibitor |
| LDL | Litho Density Log |
| LDS | Leak Detection System (pipeline monitoring) |
| LDTEP | LDT EPT Gamma Ray Log |
| LEAKL | Leak Detection Log |
| LEPRE | Litho-Elastic Property Report |
| LER | Lands Eligible for Remining or Land Equivalent Ratio |
| LER | Local Equipment Room |
| LGO | Light Gas Oil |
| LGR | Liquid Gas Ratio |
| LGS | Low (specific-)Gravity Solids |
| LIC | License |
| LIB | Lead Impression Block |
| LINCO | Liner and Completion Progress Report |
| LIOG | Lithography Log |
| LIT | Lead Impression Tool |
| LITDE | Litho Density Quicklook Log |
| LITHR | Lithological Description Report |
| LITRE | Lithostratigraphy Report |
| LITST | Lithostratigraphic Log |
| LKO | Lowest Known Oil |
| LL | Laterolog |
| LMAP | Location Map |
| LMRP | Lower Marine Riser Package |
| LMV | Lower Master Valve (on a Xmas tree) |
| LNG | Liquefied Natural Gas |
| LOA | Letter of Authorisation/Agreement/Authority |
| LOD | Lines of Defence |
| LOE | Lease Operating Expenses |
| LOGGN | Logging Whilst Drilling |
| LOGRS | Log Restoration Report |
| LOGSM | Log Sample |
| LOLER | Lifting Operations and Lifting Equipment Regulations |
| LOT | Leak-Off Test |
| LOT | Linear Override Tool |
| LOT | Lock Open Tool |
| LOTO | Lock Out / Tag Out |
| LP | Low Pressure |
| LPG | Liquefied Petroleum Gas |
| LPH | Litres Per Hour |
| LPWHH | Low Pressure Well Head Housing |
| LRA | Lower Riser Assembly |
| LRP | Lower Riser Package |
| LSBGR | Long Spacing BHC GR Log |
| LSD | Land Surface Datum |
| LSP | Life Support Package |
| LSSON | Long Spacing Sonic Log |
| LT | Linear Time or Lag Time |
| L&T | Load and Test |
| LTC | Long Thread and Coupled |
| LT&C | Long Thread and Coupled |
| LTI(FR) | Lost Time Incident (Frequency Rate) |
| LTP | liner shaker, tensile bolting cloth, perforated panel backing. |
| LUMI | Luminescence Log |
| LUN | Livening Up Notice |
| LVEL | Linear Velocity Log |
| LVOT | Linear Valve Override Tool |
| LWD | Logging While Drilling |
| LWOL | Last Well on Lease |
| LWOP | Logging Well on Paper |
| M or m | prefix designating a number in thousands (not to be confused with SI prefix M for mega- or m for milli) |
| m | metre |
| MAASP | Maximum Acceptable [or Allowable] Annular Surface Pressure |
| MAC | Multipole Acoustic Log |
| MACL | Multiarm Caliper Log |
| MAE | Major Accident Event |
| MAGST | Magnetostratigraphic Report |
| MAOP | Maximum Allowable Operating Pressure |
| MARA | Maralog |
| MAST | sonic tool (records waveform). |
| MAWP | Maximum Allowable Working Pressure |
| MBC | Membrane Brine Concentrator |
| Mbd | thousand barrels (of oil) per day |
| MBES | multibeam echosounder |
| Mbod | thousand barrels of oil per day |
| Mboe | thousand barrels of oil equivalent |
| Mboed | thousand barrels of oil equivalent per day |
| MBP | Mixed Bed Polisher |
| Mbpd | thousand barrels of oil per day |
| MBR | Minimum Bend Radius |
| MBRO | Multi-Bore Restriction Orifices |
| MBT | Methylene Blue Test |
| MBWH | Multi Bowl Wellhead |
| MCD | Mechanical Completion Dossier |
| Mcf | thousand cubic feet of natural gas |
| Mcfe | thousand cubic feet of natural gas equivalent |
| MCHE | Main Cryogenic Heat Exchanger |
| MCM | Manifold Choke Module |
| MCP | Monocolumn Platform |
| MCS | Manifold & Connection System |
| MCS | Master Control Station |
| mD | millidarcy, measure of permeability, with units of area |
| MD | Measured Depth (see also MDSS) |
| MDRT | Measured Depth referenced to Rotary Table zero datum |
| MD | Measurements/Drilling Log |
| MDEA | Methyl Diethanolamine (aMDEA) |
| MDL | Methane Drainage Licence (United Kingdom), a type of onshore licence allowing natural gas to be collected “in the course of operations for making and keeping safe mines whether or not disused” |
| MDSS | Measured Depth referenced to Mean Sea Level zero datum “Sub Sea” level |
| MDT | Modular formation Dynamic Tester |
| MDR | Mud Damage Removal (acid bullheading) |
| MEA | Monoethanolamine |
| MEG | Mono-Ethylene Glycol |
| MEIC | Mechanical Electrical Instrumentation Commission |
| MEPRL | Mechanical Properties Log |
| MERCR | Mercury Injection Study Report |
| MERG | Merge FDC/CNL/Gamma Ray/Dual Laterolog/Micro SFL Log |
| MEST | Micro-electrical scanning tool (a dipmeter, aka. MST or FMS).[10] |
| MF | Marsh Funnel (mud viscosity) |
| MFCT | Multifinger Calliper Tool |
| MGL | Magnelog |
| MGPS | Marine Growth Prevention System |
| MLH | Mud Liner Hanger |
| MIFR | Mini Frac Log |
| MINL | Minilog |
| MIPAL | Micropalaeo Log |
| MIRU | Move In and Rig Up |
| MIST | Minimum Industry Safety Training |
| MIT | Mechanical Integrity Test |
| MIYP | Maximum Internal Yield Pressure |
| mKB | Meters below Kelly Bushing |
| ML | Microlog, or Mud Log |
| MLL | Microlaterolog |
| MLF | Marine Loading Facility |
| MM or mm | prefix designating a number in millions (or SI unit millimetre) |
| MMbd | million barrels per day |
| MMbod | million barrels of oil per day |
| MMboe | million barrels of oil equivalent |
| MMboed | million barrels of oil equivalent per day |
| MMbpd | million barrels per day |
| MMcf | million cubic feet (of natural gas) |
| MMcfe | million cubic feet (of natural gas equivalent) |
| MMS | Minerals Management Service, (United States) |
| mmscfd | million standard cubic feet per day |
| MMTPA | Millions of Metric Tonnes per Annum |
| mmstb | million stock barrels |
| MNP | Merge and Playback Log |
| MODU | Mobile Offshore Drilling Unit (Either of Jack-up Drill Rig or Semi-submersible Rig or Drill Ship) |
| MOF | Marine Offloading Facility |
| MOPO | Matrix of Permitted Operations |
| MOPU | Mobile Offshore Production Unit (to describe: Jack-up Production Rig, or Semi-submersible Production Rig, or Floating Production and or storage ship – See also FPO and FPSO definitions |
| MOT | Materials/Marine Offloading Terminal |
| MOV | Motor Operated Valve |
| MPA | Micropalaeo Analysis Report |
| MPD | Managed Pressure Drilling |
| MPFM | Multi-Phase Flow Meter |
| MPK | Merged Playback Log |
| MPP | Multiphase Pump |
| MPQT | Manufacturing Procedure Qualification Test |
| MPS | Manufacturing Procedure Specification |
| MPSP | Maximum Predicted Surface Pressure |
| MPSV | Multi-Purpose Support Vessel |
| MPV | Multi Purpose Vessel |
| MQC | Multi Quick Connection Plate |
| MR | Marine Riser |
| MR | Mixed Refrigerant |
| MR | Morning Report |
| MRBP | Magna Range Bridge Plug |
| MRCV | Multi Reverse Circulating Valve |
| MRIT | Magnetic Resonance Imaging Tool |
| MRIRE | Magnetic Resonance Image Report |
| MRR | Material Receipt Report |
| MRT | Marine Riser Tensioners |
| MRT | Mechanical Run Test |
| MRX | Magnetic resonance expert (wireline NMR tool) [9] |
| MSCT | Mechanical Sidewall Coring Tool [10] |
| MSDS | Material Safety Data Sheet |
| MSFL | Micro SFL Log; Micro-Spherically Focussed Log (resistivity). |
| MSI | Mechanical and Structural Inspection |
| MSIP | Modular Sonic Imaging Platform (Sonic Scanner) [11] |
| MSIPC | Multi Stage inflatable Packer Collar |
| MSL | Mean Sea Level |
| MSL | Micro Spherical Log |
| MSS | Magnetic Single Shot |
| MST | MST EXP Resistivity Log |
| MSV | Multipurpose Support Vessel |
| MTBF | Mean Time Between Failure |
| MT | Motor Temperature; DMT Parameter for ESP motor |
| MTO | Material Take-Off |
| MTT | MTT Multi-Isotope Trace Tool |
| MUD | Mud Log |
| MUDT | Mud Temperature Log |
| MuSol | Mutual Solvent |
| MVB | Master Valve Block on Xmas Tree |
| MVC | Minimum Volume Commitment |
| MW | Mud weight |
| MWD | Measurement While Drilling |
| MWDRE | Measurement While Drilling Report |
| MWS | Marine Warranty Survey |
| NACE | National Association of Corrosion Engineers |
| NAM | North American |
| NAPF | Non Aqueous Phase Fluid |
| NASA | Non Active Side Arm (term used in the North Sea for kill wing valve on a Xmas tree) |
| NAVIG | Navigational Log |
| NB | Nominal Bore |
| NCC | Normally Clean Condensate |
| ND | Nipple Down |
| NDE | Non Destructive Examination |
| NEFE | Non Emulsifying Iron Inhibitor (usually used with hydrochloric acid) |
| NEUT | Neutron Log |
| NFG | ‘No Fucking Good’ used for marking damaged equipment, not to be confused with NG being natural gas |
| NFI | No Further Investment |
| NFW | New Field Wildcat, Lahee classification |
| NG | Natural Gas |
| NGDC | National Geoscience Data Centre (United Kingdom) |
| NGL | Natural Gas Liquids |
| NGR | Natural Gamma Ray |
| NGRC | National Geological Records Centre (United Kingdom) |
| NGS | NGS Log |
| NGSS | NGS Spectro Log |
| NGT | Natural Gamma Ray Tool |
| NGTLD | NGT LDT QL Log |
| NGLQT | NGT QL Log |
| NGTR | NGT Ratio Log |
| NHDA | National Hydrocarbons Data Archive (United Kingdom) |
| NHPV | Net Hydrocarbon Pore Volume |
| NMDC | Non Magnetic Drill Collar |
| NMHC | Non-Methane Hydrocarbons |
| NMR | Nuclear Magnetic Resonance Log |
| NMVOC | Non-Methane Volatile Organic Compounds |
| NNS | Northern North Sea |
| NOISL | Noise Log |
| NOC | National Oil Company |
| NORM | Naturally Occurring Radioactive Material |
| NP | Non Producing well (as opposed to P – Producing well) |
| NPD | Norwegian Petroleum Directorate |
| NPS | Nominal Pipe Size (sometimes NS) |
| NPSH(R) | Net Positive Suction Head (Required) |
| NPV | Net Present Value |
| NRI | Net Revenue Interest |
| NRV | Non Return Valve |
| NPW | New Pool Wildcat, Lahee classification |
| NS | North Sea; can also refer to the North Slope Borough, Alaska, the North Slope, which includes Prudhoe Bay Oil Field (the largest US oil field), Kuparuk Oil Field, Milne Point, Lisburne, and Point McIntyre among others. |
| NTHF | Non-Toxic High Flash |
| NTU | Nephelometric Turbidity Unit |
| NUMAR | Nuclear and Magnetic Resonance – Image Log see also NMR |
| O&G | Oil and Gas |
| O&M | Operations and Maintenance |
| O/S | Overshot, fishing tool |
| OBCS | Ocean Bottom Cable System |
| OBDTL | OBDT Log |
| OBEVA | OBDT Evaluation Report |
| OBM | Oil-Based Mud |
| OBO | Operated by Others |
| OCIMF | Oil Companies International Marine Forum |
| OCI | Oil Corrosion Inhibitor (Vessels) |
| OCL | Quality Control Log |
| OCTG | Oil Country Tubular Goods (oil well casing, tubing, and drill pipe)[11] |
| OD | Outer Diameter (of a tubular component such as casing) |
| ODT | Oil Down To |
| OFST | Offset Vertical Seismic Profile |
| OEM | Original Equipment Manufacturer |
| OFIC | Offshore Interim Completion Certificate |
| OLAF | Offshore Footless Loading Arm |
| OH | Openhole |
| OH | Openhole Log |
| OHC | Open Hole Completion |
| OHD | Open Hazardous Drain |
| OHUT | Offshore Hook-up team |
| OI | Oxygen Index |
| OIM | Offshore Installation Manager |
| OMRL | Oriented Micro-Resistivity Log |
| ONAN | Oil Natural Air Natural cooled transformer |
| ONNR | Office of Natural Resources Revenue (formerly MMS) |
| OOE | Offshore Operation Engineer (senior technical authority on an offshore oil platform) |
| OOIP | Original Oil In Place |
| OOT/S | Out of Tolerance/Straightness |
| OPITO | Offshore Petroleum Industry Training Organization |
| OPEC | Organization of Petroleum Exporting Countries |
| OPL | Operations Log |
| OPRES | Overpressure Log |
| OPS | Operations Report |
| ORICO | Oriented Core Data Report |
| ORM | Operability Reliability Maintainability |
| ORRI | Overriding Royalty Interest |
| OS&D | Over, Short & Damage (Report) |
| OSV | Offshore Supply Vessel |
| OT | A Well On Test |
| OT | Off Tree |
| OTDR | Optical Time Domain Reflectometry |
| OTIP | Operational Testing Implementation Plan |
| OTL | Operations Team Leader |
| OTP | Operational Test Procedure |
| OTSG | One-time Through Steam Generator |
| OWC | Oil Water Contact |
| OUT | Outpost, Lahee classification |
| OUT | Oil Up To |
| OVCH | Oversize Charts |
| OVID | Offshore Vessel Inspection Database |
| OWC | Oil-Water Contact |
| P | Producing well (as opposed to NP – Non Producing) |
| P&A | plug and abandon (well) |
| PA | Producing Asset |
| PA | Polyamide |
| PA | Producing Asset with Exploration Potential |
| PACO | Process, Automation, Control And Optimisation |
| PACU | Packaged Air Conditioning Unit |
| PADPRT | Pressure Assisted Drillpipe Running Tool |
| PAGA | Public Address General Alarm |
| PAL | Palaeo Chart |
| PALYN | Palynological Analysis Report |
| PAR | Pre-Assembled Rack |
| PAU | Pre-Assembled Unit |
| PBDMS | Playback DMSLS Log |
| PBHL | Proposed Bottom Hole Location |
| PBR | Polished Bore Receptacle (component of a completion string) |
| PBD | Pason Billing System |
| PBTD | Plug Back Total Depth |
| PBU | Pressure Build Up (applies to integrity testing on valves) |
| PCA | Production Concession Agreement |
| PCB | Poly Chlorinated BiPhenyl |
| PCCC | Pressure Containing anti‐Corrosion Caps |
| PCCL | Perforation Casing Collar Locator Log |
| PCDC | Pressure Cased Directional (Geometry i.e. borehole survey) MWD tool |
| PCDM | Power and Control Distribution Module |
| PCKR | Packer |
| PCMS | Polymer Coupon Monitoring System |
| PCN | Process Control Network |
| PCO | Pre-commission Preparations (pipeline) |
| PCOLL | Perforation and Collar |
| PCP | Progressing Cavity Pump |
| PCPT | Piezo-Cone Penetration Test |
| PDC | Perforation Depth Control |
| PDC | Polycrystalline Diamond Compact (a type of drilling bit) |
| PDG/PDHG | Permanent Downhole Gauge |
| PDGB | Permanent Drilling Guide Base |
| PDKL | PDK Log |
| PDKR | PDK 100 Report |
| PDM | Positive Displacement Motor |
| PDP | Proved Developed Producing (Reserves) |
| PDPM | Power Distribution Protection Module |
| PDNP | Proved Developed Not Producing |
| PDR | Physical Data Room |
| PDT | Differential Pressure Transmitter |
| PE | Product Emulsion |
| PE | Petroleum Engineer |
| PE | Professional Engineer |
| PE | Polyethylene |
| PEA | Palaeo Environment Study Report |
| PEDL | Petroleum Exploration and Development Licence (United Kingdom), introduced in the 8th Onshore Licensing Round |
| PEFS | Process Engineering Flow Scheme (a confusing name for P&ID) |
| PENL | Penetration Log |
| PEP | PEP Log |
| PERC | Powered emergency release coupling |
| PERDC | Perforation Depth Control |
| PERFO | Perforation Log |
| PERM | Permeability |
| PERML | Permeability Log |
| PESGB | Petroleum Exploration Society of Great Britain |
| PETA | Petrographical Analysis Report |
| PETD | Petrographic Data Log |
| PETLG | Petrophysical Evaluation Log |
| PETPM | Petrography Permeametry Report |
| PETRP | Petrophysical Evaluation Report |
| PEX | Platform Express toolstring (resistivity, porosity, imaging) |
| PFD | Process Flow Diagram |
| PFE | Plate/Frame Heat Exchanger |
| PFHE | Plate Fin/Frame Heat Exchanger |
| PFC | PFC Log |
| PFPG | Perforation Plug Log |
| PFREC | Perforation Record Log |
| PG | Pressure Gauge (Report) |
| PGB | Permanent Guide Base |
| PGOR | Produced Gas Oil Ratio |
| PH | Phasor Log |
| PHASE | Phasor Processing Log |
| PHB | Pre-Hydrated Bentonite |
| PHC | Passive Heave Compensator |
| PHOL | Photon Log |
| PHPU | Platform Hydraulic Power Unit |
| PHPA | Partially hydrolyzed polyacrylamide (mud) |
| PHYFM | Physical Formation Log |
| PI | Productivity Index |
| PI | Permit Issued |
| P&ID | Process and Instrument Diagram |
| PINTL | Production Interpretation |
| PIP | Pump Intake Pressure |
| PIP | Pipe in Pipe |
| PIT | Pump Intake Temperature |
| PJSM | Per Job Safety Meeting |
| PL | Production Licence |
| PLEM | Pipeline End Manifold |
| PLES | Pipeline End Structure |
| PLET | Pipeline End Termination |
| PLG | Plug Log |
| PLR | Pig Launcher/Receiver |
| PLS | Position Location System |
| PLSV | Pipelay Support Vessel |
| PLT | Production Logging Tool |
| PLTQ | Production Logging Tool Quicklook Log |
| PLTRE | Production Logging Tool Report |
| PLQ | Permanent Living Quarters |
| PMI | Positive Material Identification |
| PMOC | Project Management of Change |
| PMR | Precool Mixed Refrigerant |
| PMV | Production Master Valve |
| PNP | Proved Not Producing |
| POB | Personnel on Board |
| POBM | Pseudo-Oil-Based Mud |
| POD | Plan of Development |
| POF | Permanent Operations Facility |
| POOH / POH | Pull Out Of Hole |
| PON | Petroleum Operations Notice (United Kingdom) |
| POP | Pump Out Plug |
| POR | Density Porosity Log |
| POSFR | Post Fracture Report |
| POSTW | Post Well Appraisal Report |
| POSWE | Post Well Summary Report |
| PP | DXC Pressure Plot Log |
| PP | Pump Pressure |
| ppb | Pounds Per Barrel |
| PPC | Powered Positioning Caliper (Schlumberger dual-axis wireline caliper tool) |
| ppcf | Pounds Per Cubic Foot |
| PPE | Preferred Pressure End |
| PPE | Personal Protective Equipment |
| PPFG | Pore Pressure/Fracture Gradient |
| ppg | Pounds Per Gallon |
| PPI | Post Production Inspection/Intervention |
| PPI | Post Pipelay Installation |
| pptf | Pounds (per square inch) Per Thousand Feet (of depth) – a unit of fluid density/pressure |
| PPS | Production Packer Setting |
| PQR | Procedure Qualification Record |
| PR2 | Testing regime to API6A Annex F |
| PRA | Production Reporting & Allocation |
| PREC | Perforation Record |
| PRESS | Pressure Report |
| PRL | Polished Rod Liner |
| PROD | Production Log |
| PROTE | Production Test Report |
| PROX | Proximity Log |
| PRSRE | Pressure Gauge Report |
| PSANA | Pressure Analysis |
| PSA | Production Service Agreement |
| PSA | Production Sharing Agreement |
| PSC | Production Sharing Contract |
| PSD | Planned Shut-Down |
| PSD | Pressure Safety Device |
| PSIA | Pounds Per Square Inch Atmospheric |
| PSIG | Pounds Per Square Inch Gauge |
| PSL | Product Specification Level |
| PSLOG | Pressure Log |
| PSM | Process Safety Management |
| PSP | Pseudostatic Spontaneous Potential |
| PSP | Positive Sealing Plug |
| PSPL | PSP Leak Detection Log |
| PSSR | Pre-Startup Safety Review |
| PSQ | Plug Squeeze Log |
| PST | PST Log |
| PSV | Pipe/Platform Supply Vessel |
| PSV | Pressure Safety Valve |
| PSVAL | Pressure Evaluation Log |
| PTA/S | Pipeline Termination Assembly/Structure |
| PTO | Permit to Operate |
| PTRO | Test rack opening pressure (For a gas lift valve) |
| PTSET | Production Test Setter |
| PTTC | Petroleum Technology Transfer Council, United States |
| PTW | Permit to Work |
| PU | Pick Up (tubing, rods, power swivel, etc.) |
| PUD | Proved Undeveloped Reserves |
| PUN | Puncher Log |
| PUR | Plant Upset Report |
| PUWER | Provision and Use of Work Equipment Regulations |
| PV | Plastic Viscosity |
| PVDF | Polyvinylidene Fluoride |
| PVSV | Pressure Vacuum Safety Valve |
| PVT | Pressure Volume Temperature |
| PVTRE | Pressure Volume Temperature Report |
| PW | Produced Water |
| PWD | Pressure While Drilling. (See also Annular- APWD.) |
| PWB | Production Wing Block (XT) |
| PWHT | Post Weld Heat Treat |
| PWRI | Produced Water Re-Injection |
| PWV | Production Wing Valve (also known as a flow wing valve on a Xmas tree) |
| QC | Quality control |
| QCR | Quality Control Report |
| QL | Quicklook Log |
| R/B | RACK BACK |
| R&M | Repair and Maintenance |
| RAC | Ratio Curves |
| RACI | Responsible / Accountable / Consulted / Informed |
| RAT | Riser Assembly Tower |
| RAM | Reliability, Availability, and Maintainability |
| RAWS | Raw Stacks VSP Log |
| RBP | Retrievable Bridge Plug |
| RBS | Riser Base Spool |
| RCA | Root Cause Analysis |
| RCKST | Rig Checkshot |
| RCD | Rotating Control Device |
| RCI | Reservoir Characterization Instrument (for downhole fluid measurements e.g. spectrometry, density, etc.) |
| RCL | Retainer Correlation Log |
| RCM | Reliability Centred Maintenance |
| RCR | Remote Component Replacement (Tool) |
| RCU | Remote Control Unit |
| RDMO | Rig Down Move Out |
| RDRT | Rig Down Rotary Tools |
| RDVI | Remote Digital Video Inspection |
| RDWL | Rig Down Wireline |
| RE | Reservoir Engineer |
| REOR | Reorientation Log |
| RE-PE | Re-Perforation Report |
| RESAN | Reservoir Analysis |
| RESDV | Riser Emergency Shut Down Valve |
| RESEV | Reservoir Evaluation |
| RESFL | Reservoir Fluid |
| RESI | Resistivity Log |
| RESL | Reservoir Log |
| RESOI | Residual Oil |
| REZ | Renewable Energy Zone (United Kingdom) |
| RF | Recovery Factor |
| RFCC | Ready for Commissioning Certificate |
| RFLNG | Ready for Liquefied Natural Gas |
| RFMTS | Repeat Formation Tester |
| RFO | Ready for operations (pipelines/cables) |
| RFSU | Ready For Start-Up |
| RFT | Repeat Formation Tester |
| RFTRE | Repeat Formation Tester Report |
| RFTS | Repeat Formation Tester Sample |
| RHA | Riser Heel Anchor |
| RHD | Rectangular Heavy Duty – usually screens used for shaking. |
| RIGMO | Rig Move |
| RIH | Run In Hole |
| RIMS | Riser Integrity Monitoring System |
| RITT | Riser Insertion Tube (Tool) |
| RKB | Rotary Kelly Bushing (a datum for measuring depth in an oil well) |
| RLOF | Rock Load-out Facility |
| RMLC | Request for Mineral Land Clearance |
| RMP | Reservoir Management Plan |
| RMS | Ratcheting Mule Shoe |
| RMS | Riser Monitoring System |
| RNT | RNT Log |
| ROCT | Rotary Coring Tool |
| ROP | Rate of Penetration |
| ROP | Rate of Perforation |
| ROT | Remote Operated Tool |
| ROV/WROV | Remotely Operated Vehicle/WorkClass Remotely Operated Vehicle, used for subsea construction and maintenance |
| ROZ | Recoverable Oil Zone |
| ROWS | Remote Operator Workstation |
| RPCM | Ring Pair Corrosion Monitoring |
| RPM | Revolutions Per Minute, (Rotations Per Minute) |
| RRC | Rail Road Commission (governs oil and gas production in Texas) |
| RROCK | Routine Rock Properties Report |
| RSES | Resonsible for Safety and Environment on Site |
| RSPP | a publicly traded, oil and gas producer focused on horizontal drilling of multiple stacked pay zones in the oil-rich Permian Basin |
| RSS | Rig Site Survey |
| RSS | Rotary Steerable Systems |
| RST | Reservoir Saturation Tool (Schlumberger) Log |
| RTMS | Riser Tension Monitoring System |
| RTE | Rotary Table Elevation |
| RTP | Return to production |
| RTTS | Retrievable Test-Treat-Squeeze (packer) |
| RU | Rig Up |
| RURT | Rig Up Rotary Tools |
| RVI | Remote Video Inspection |
| RWD | Reaming While Drilling |
| SABA | Supplied Air Breathing Apparatus |
| SAGD | Steam Assisted Gravity Drainage |
| SALM | Single Anchor Loading Mooring |
| SAM | Subsea Accumulator Module |
| SAML | Sample Log |
| SAMTK | Sample Taker Log |
| SANDA | Sandstone Analysis Log |
| SAPP | sodium acid pyrophosphate |
| SAS | Safety and Automation System |
| SAT | SAT Log |
| SAT | Site Acceptance Test |
| SB | SIT-BO Log |
| SBF | Synthetic Base Fluid |
| SBM | Synthetic Base Mud |
| SBT | Segmented Bond Tool |
| SC | Seismic Calibration |
| SCADA | Supervisory Control and Data Acquisition |
| SCAL | Special Core Analysis |
| SCAP | Scallops Log |
| SCBA | Self-Contained Breathing Apparatus |
| SCUBA | Self-Contained Underwater Breathing Apparatus |
| SCC | System Completion Certificate |
| SCDES | Sidewall Core Description |
| SCF | standard cubic feet (of natural gas) |
| SCHLL | Schlumberger Log also SCHLO, SCHLU |
| SCM(MB) | Subsea Control Module (Mounting Base) |
| SCO | Synthetic crude oil |
| SCRS | Slow Circulation Rates |
| SCSG | type of pump |
| SCSSV | Surface Controlled Subsurface Safety Valve |
| SDON | Shut Down Over Night |
| SPCU | Subsea Control Unit |
| SCVF | Surface Casing Vent Flow. It’s kind of test |
| SD | Sonic Density |
| SDFD | Shut Down For Day |
| SDFN | Shut Down For Night |
| SDIC | Sonic Dual Induction |
| SDL | Supplier Document List |
| SDM/U | Subsea Distribution Module/Unit |
| SDPBH | SDP Bottom Hole Pressure Report |
| SDSS | Super Duplex Stainless Steel |
| SDT | Step Draw-down Test (sometimes SDDT) |
| SDU/M | Subsea Distribution Unit/Module |
| SEA | Strategic Environmental Assessment (United Kingdom) |
| SECGU | Section Gauge Log |
| SEDHI | Sedimentary History |
| SEDIM | Sedimentology |
| SEDL | Sedimentology Log |
| SEDRE | Sedimentology Report |
| SEM | Subsea Electronics Module |
| Semi (or Semi-Sub) | Semi-Submersible Drilling Rig |
| SEPAR | Separator Sampling Report |
| SEQSU | Sequential Survey |
| SFERAE | Global Association for the use of knowledge on Fractured Rock in a state of Stress, in the field of Energy, Culture and Environment[12] |
| SFL | Steel Flying Lead |
| SG | Static Gradient, Specific Gravity |
| SGR | Shale Gouge Ratio |
| SGS | Steel Gravity Structure |
| SGSI | Shell Global Solutions International |
| SGUN | Squeeze Gun |
| SHA | Sensor Harness Assembly |
| SHC | System Handover Certificate |
| SHDT | Stratigraphic High Resolution Dipmeter Tool |
| SHO | Stab and Hinge Over |
| SHOCK | Shock Log |
| SHOWL | Show Log |
| SHT | Shallow Hole Test |
| SI | Shut In well |
| SI | Structural Integrity |
| SI | Scale Inhibitor |
| SI/TA | Shut In/Temporarily Abandoned |
| SIA | Social Impact Assessment |
| SIC | Subsea installation Contractor |
| SICP | Shut-In Casing Pressure |
| SIDPP | Shut-In Drill Pipe Pressure |
| SIDSM | Sidewall Sample |
| SIF | Safety Instrumented Functions (Test) |
| SIGTTO | Society of International Gas Tanker and Terminal Operators |
| SIMCON | Simultaneous Construction |
| SIMOPS | Simultaneous Operations |
| SIP | Shut In Pressure |
| SIPES | Society of Independent Professional Earth Scientists, United States |
| SIS | Safety Instrumented System |
| SIT | System Integration Test FR SIT – Field Representation SIT |
| SIT | (Casing) Shoe Integrity Test |
| SITHP | Shut In Tubing Hanger/Head Pressure (another term for CITHP) |
| SITT | Single TT Log |
| SIWHP | Shut-in Well Head Pressure |
| SKPLT | Stick Plot Log |
| SL | Seismic Lines |
| SLS | SLS GR Log |
| SLT | SLT GR Log |
| SM or S/M | Safety Meeting |
| SMA | Small Amount |
| SMLS | Seamless PipeMPP: |
| SMO | Suction Module |
| SMPC | Subsea Multiphase Pump: Pump, which can increase flowrate and pressure of the untreated wellstream |
| SN | Seat Nipple |
| SNAM | Societá NAzionale Metanodotti now Snam S.p.A. (Italy)[13] |
| SNP | Sidewall Neutron Porosity |
| SNS | Southern North Sea |
| SOBM | Synthetic Oil Based Mud |
| SOLAS | Safety of Life at Sea |
| SONCB | Sonic Calibration Log |
| SONRE | Sonic Calibration Report |
| SONWR | Sonic Waveform Report |
| SONWV | Sonic Waveform Log |
| SOP | Shear Out Plug |
| SOW | Slip-On Wellhead |
| SP | Set Point |
| SP | Shot point (geophysics) |
| SP | Spontaneous Potential (Well Log) |
| SPAMM | Subsea Pressurization and Monitoring Manifold |
| SPCAN | Special core analysis |
| SPCU | Subsea Power and Control Unit |
| SPE | Society of Petroleum Engineers[14] |
| SPEAN | Spectral Analysis |
| SPEL | Spectralog |
| SPFM | Single Phase Flow Meter |
| SPH | SPH Log |
| SPHL | Self Propelled Hyperbaric Lifeboats |
| SPM | Side Pocket Mandrel or Strokes Per Minute (of a positive-displacement pump) |
| SPMT | Self-Propelled Modular Transporter |
| SPOP | Spontaneous Potential Log |
| SPP | Stand Pipe Pressure |
| SPROF | Seismic Profile |
| SPS | Subsea Production Systems |
| SPT | Shallower Pool Test, Lahee classification |
| SPUD | Spud Date |
| SPWLA | Society of Petrophysicists and Well Log Analysts[15] |
| SQL | Seismic Quicklook Log |
| SQZ | Squeeze job |
| SR | Shear Rate |
| SRD | Seismic Reference Datum, an imaginary horizontal surface at which TWT is assumed to be zero |
| SREC | Seismic Record Log |
| SRT | Site Receival Test |
| SS | Subsea, as in a datum of depth, e.g. TVDSS (True Vertical Depth Subsea) |
| SSCC | Sulphide Stress Corrosion Cracking |
| SSCP | Subsea Cryogenic Pipeline |
| SSCS | Subsea Control System |
| SSD | Sub Sea Level depth (in Metres or Feet, positive value in downwards direction with respect to the Geoid) |
| SSD | Sliding Sleeve Door |
| SSFP | Subsea Flowline & Pipeline |
| SSG | Sidewall Sample Gun |
| SSIV | Subsea Isolation Valve |
| SSTV | Subsea Test Valve |
| SSM | Subsea Manifolds |
| SSMAR | Synthetic Seismic Marine Log |
| SSPLR | Subsea Pig Launcher/Receiver |
| SSSL | Supplementary Seismic Survey Licence (United Kingdom), a type of onshore licence |
| SSSV | Sub-Surface Safety Valve |
| SSTT | Subsea Test Tree |
| SSU | Subsea Umbilicals |
| SSV | Surface Safety Valve |
| SSWI | Subsea Well Intervention |
| STAB | Stabiliser |
| STAGR | Static Gradient Survey Report |
| STB | stock tank barrel |
| STC | STC Log |
| STD | 2-3 joints of tubing |
| STFL | Steel Tube Fly Lead |
| STG | Steam Turbine Generator (not to be confused with a GTG) |
| STGL | Stratigraphic Log |
| STIMU | Stimulation Report |
| STKPT | Stuck Point |
| STL | STL Gamma Ray Log |
| STL | Submerged Turret Loading |
| STRAT | Stratigraphy, stratigraphic |
| STRRE | Stratigraphy Report |
| STOIIP | Stock Tank Oil Initially In Place |
| STOP | Safety Training Observation Program |
| STP | Submerged Turret Production |
| STSH | String Shot |
| STTR | Single Top Tension Riser |
| ST&C | Short Thread and Coupled |
| STC | Short Thread and Coupled |
| STU | Steel Tube Umbilical |
| SUML | Summarised Log |
| SUMRE | Summary Report |
| SUMST | Geological Summary Sheet |
| SURF | Subsea/Umbilicals/Risers/Flowlines |
| SURFR | Surface Sampling Report |
| SURRE | Survey Report |
| SURU | Start-up Ramp-up |
| SURVL | Survey Chart Log |
| SUT(A/B) | Subsea Umbilical Termination (Assembly/Box) |
| SUTU | Subsea Umbilical Termination Unit |
| SW | Salt Water |
| SWC | Side Wall Core |
| SWD | Salt Water Disposal Well |
| SWE | Senior Well Engineer |
| SWHE | Spiral Wound Heat Exchanger |
| SWOT | Strengths, Weaknesses, Opportunities and Threats |
| SWT | Surface Well Testing |
| SV | Sleeve Valve or Standing Valve |
| SVLN | Safety Valve Landing Nipple |
| SWLP | seawater lift pump |
| SYNRE | Synthetic Seismic Report |
| SYSEI | Synthetic Seismogram Log |
| T | well flowing to Tank |
| TA | Temporarily Abandoned well |
| TA | Top Assembly |
| TAC | Tubing Anchor |
| TAGOGR | Thermally Assisted Gas/Oil Gravity Drainage |
| TAN | Total Acid Number |
| TAPLI | Tape Listing |
| TAPVE | Tape Verification |
| TAR | True Amplitude Recovery |
| TB | Tubing Puncher Log |
| TBE | Technical Bid Evaluation |
| TBG | Tubing |
| TBT | Through Bore Tree / Toolbox Talk |
| TCA | Total Corrosion Allowance |
| TCC | Tungsten Carbide Coating |
| TCCC | Transfer of Care, Custody and Control |
| TCF | Temporary Construction Facilities |
| TCF | Trillion Cubic Feet(of gas) |
| TCI | Tungsten Carbide Insert (a type of rollercone drillbit) |
| TCP | Tubing Conveyed Perforating (Gun) |
| TCPD | Tubing-Conveyed Perforating Depth |
| TCU | Thermal Combustion Unit |
| TD | Target Depth |
| TD | Total Depth (depth of the end of the well; also a verb, to reach the final depth, used as an acronym in this case) |
| TDD | Total Depth (Driller) |
| TDC | Total Drilling Cost |
| TDL | Total Depth (Logger) |
| TDM | Touch Down Monitoring |
| TDP | Touch Down Point |
| TDS | Top Drive System |
| TDS | Total Dissolved Solids |
| TDT | Thermal Decay Time Log |
| TDTCP | TDT CPI Log |
| TDT GR | TDT Gamma Ray Casing Collar Locator Log |
| TEFC | Totally Enclosed Fan Cooled |
| TEG | Tri-Ethylene Glycol |
| TEG | Thermal Electric Generator |
| TELER | Teledrift Report |
| TEMP | Temperature Log |
| TFE | TotalFinaElf (obsolete; Now Total S.A.) major French multinational oil company |
| TFL | Through Flow Line |
| TFM | TaskForceMajella Research Project |
| TGB | Temporary Guide Base |
| TGT / TG | Tank Gross Test |
| TGOR | Total Gas Oil Ratio (GOR uncorrected for gas lift gas present in the production fluid) |
| TH | Tubing Hanger |
| THD | Tubing Head |
| THERM | Thermometer Log |
| THP | Tubing Hanger Pressure (pressure in the production tubing as measured at the tubing hanger) |
| THRT | Tubing Hanger Running Tool |
| THS | Tubing Head Spool |
| TIE | Tie In Log |
| TIH | Trip Into Hole |
| TIW | Texas Iron Works (pressure valve) |
| TIEBK | Tieback Report |
| TLI | Top of Logging Interval |
| TLOG | Technical Log |
| TLP | Tension-leg platform |
| TMCM | Transverse Mercator Central Meridian |
| TMD | Total Measured Depth in a wellbore |
| TNDT | Thermal Neutron Decay Time |
| TNDTG | Thermal Neutron Decay Time/Gamma Ray Log |
| TOC | Top Of Cement |
| TOC | Total Organic Content/Carbon |
| TOF | Top of Fish |
| TOFD | Time of first data sample (on seismic trace) |
| TOFS | Time of first surface sample (on seismic trace) |
| TOH | Trip Out of Hole |
| TOOH | Trip Out Of Hole |
| TOL | Top Of Liner |
| TORAN | Torque and Drag Analysis |
| TPC | Temporary Plant Configuration |
| TPERF | Tool Performance |
| TQM | Total Quality Management |
| TRCFR | Total Recordable Case Frequency Rate |
| TRT | Tree Running Tool |
| TR | Temporary Refuge |
| TRA | Top Riser Assembly |
| TRA | Tracer Log |
| TRACL | Tractor Log |
| TRD | Total Report Data |
| TREAT | Treatment Report |
| TREP | Test Report |
| TRIP | Trip Condition Log |
| TRS | Tubing Running Services |
| TRSV | Tubing Retrievable Safety Valve |
| TRSCSSV | Tubing Retrievable Surface Controlled Sub-Surface Valve |
| TRSCSSSV | Tubing Retrievable Surface Controlled Sub-Surface Safety Valve |
| TSA | Thermally Sprayed Aluminium |
| TSA | Terminal Storage Agreement |
| TSI | Temporarily Shut In |
| TSS | Total Suspended Solids |
| TSOV | Tight shut off valve |
| TT | Torque Tool |
| TT | Transit Time Log |
| TTVBP | Through Tubing Vented Bridge Plug |
| TTRD | Through Tubing Rotary Drilling |
| TUC | Topside Umbilical Connection |
| TUC | Turret Utility Container |
| TUM | Tracked Umbilical Machine |
| TUPA | Topside Umbilical Panel Assembly |
| TUTB | Topside Umbilical Termination Box/Unit/Assembly (TUTU) |
| TVBDF | True Vertical Depth Below Derrick Floor |
| TV/BIP | Ratio of Total Volume (ore and overburden) to Bitumen In Place |
| TVD | True Vertical Depth |
| TVDPB | True Vertical Depth Playback Log |
| TVDRT | True Vertical Depth (referenced to) Rotary Table zero datum |
| TVDKB | True Vertical Depth (referenced to) Top Kelly Bushing zero datum |
| TVDSS | True Vertical Depth (referenced to) mean sea level zero datum |
| TVELD | Time and Velocity to Depth |
| TVRF | True Vertical Depth versus Repeat Formation Tester |
| TWT | Two-Way Time (seismic) |
| TWTTL | Two-Way Travel Time Log |
| UBHO | Universal Bottom Hole Orientation (sub) |
| UBI | Ultrasonic Borehole Imager |
| UBIRE | Ultrasonic Borehole Imager Report |
| UCH | Umbilical Connection Housing |
| UCIT | Ultrasonic Casing Imaging Tool (high resolution Casing & Corrosion Imaging tool) |
| UCR | Unsafe Condition Report |
| UCSU | Upstream Commissioning and Start-Up |
| UFJ | Upper Flex Joint |
| UFR | Umbilical Flow lines & Risers |
| UGF | Universal Guide Frame |
| UIC | Underground Injection Control |
| UKCS | United Kingdom Continental Shelf |
| UKOOA | United Kingdom Offshore Operators Association |
| UKOOG | United Kingdom Onshore Operators Group |
| ULCGR | Uncompressed LDC CNL Gamma Ray Log |
| UMCA | Umbilical Midline Connection Assembly |
| UMV | Upper Master Valve (from a Xmas tree) |
| UPB | Unmanned Production Buoy |
| UPL | Upper pressure limit |
| UPR | Upper Pipe Ram |
| UPT | Upper pressure threshold |
| URA | Upper Riser Assembly |
| URT | Universal Running Tool |
| USBL | Ultra-short-baseline systems |
| USIT | Ultra Sonic Imaging tool (cement bond logging, casing wear logging) |
| USGS | United States Geological Survey |
| UTA/B | Umbilical Termination Assembly/Box |
| UTAJ | Umbilical Termination Assembly Jumper |
| UTM | Universal Transverse Mercator |
| UWI | Unique Well Identifier |
| UWILD | Underwater Inspection in Lieu of Dry Docking |
| UZV | Shutdown Valve |
| VDENL | Variation Density Log |
| VDL | VDL Log (Variable Density Log) |
| VDU | Vacuum Distillation Unit, used in processing bitumen |
| VELL | Velocity Log |
| VERAN | Verticality Analysis |
| VERIF | Verification List |
| VERLI | Verification Listing |
| VERTK | Vertical Thickness |
| VFC | Volt Free Contact |
| VGMS | Vent Gas Monitoring System ( Flexible riser annulus vent system) |
| VIR | Value Investment Ratio |
| VISME | Viscosity Measurement |
| VIV | Vortex induced Vibration |
| VLP | Vertical Lift Performance |
| VLS | Vertical Lay System |
| VLTCS | Very Low Temperature Carbon Steel |
| VO | Variation Order |
| VOCs | Volatile Organic Compounds |
| VOR | Variation Order Request |
| VRS | Vapor Recovery System |
| VRR | Voidage Replacement Ratio |
| VS | Vertical Section |
| VSD | Variable Speed Drive |
| VSI | Versatile Seismic Imager (Schlumberger VSP tool)[17] |
| VSP | Vertical Seismic Profile |
| VSPRO | Vertical Seismic Profile |
| VTDLL | Vertical Thickness Dual Laterolog |
| VTFDC | Vertical Thickness FDC CNL Log |
| VTISF | Vertical Thickness ISF Log |
| VWL | Velocity Well Log |
| VXT | Vertical Christmas Tree |
| W | Watt |
| W/C | Water Cushion |
| WCC | Work Control Certificate |
| WABAN | Well Abandonment Report |
| WAC | Weak Acid Cation |
| WAG | Water Alternating Gas (describes an injection well which alternates between water and gas injection) |
| WALKS | Walkaway Seismic Profile |
| WAS | Well Access System |
| WATAN | Water Analysis |
| WAV3 | Amplitude (in Seismics) |
| WAV4 | Two Way Travel Time (in Seismics) |
| WAV5 | Compensate Amplitudes |
| WAVF | Waveform Log |
| WBM | Water-Based drilling Mud |
| WBS | Well Bore Schematic |
| WBS | Work Breakdown Structure |
| WC | Watercut / Wildcat well |
| WCT | Wet Christmas Tree |
| WE | Well Engineer |
| WEG | Wireline Entry Guide |
| WELDA | Well Data Report |
| WELP | Well Log Plot |
| WEQL | Well Equipment Layout |
| WESTR | Well Status Record |
| WESUR | Well Summary Report |
| WF | Water Flooding |
| WGFM | Wet Gas Flow Meter |
| WFAC | Waveform Acoustic Log |
| WGEO | Well Geophone Report |
| WGR | Water Gas Ratio |
| WGFM | Wet Gas Flow Meter |
| WGUNT | Water Gun Test |
| Wh | White |
| WH | Well History |
| WHIG | Whitehouse Gauge |
| WHM | Wellhead Maintenance |
| WHP | Wellhead Pressure |
| WHSIP | Wellhead Shut-In Pressure |
| WI | Water Injection |
| WI | Working Interest |
| WIKA | Definition Needed |
| WIR | Water Intake Risers |
| WIT | Water Investigation Tool |
| WITS | Well Site Information Transfer System |
| WIPSP | WIP Stock Packer |
| WLC | Wireline Composite Log |
| WLL | Wireline Logging |
| WLSUM | Well Summary |
| WLTS | Well Log Tracking System |
| WLTS | Well Log Transaction System |
| WM | Wet Mate |
| WHM | Wellhead Maintenance |
| WHMIS | WorkPlace Hazardous Material Information Systems |
| WHP | Wellhead Pressure |
| WO | Well in Work Over |
| WO/O | Waiting on Orders |
| WOA | Well Operations Authorization |
| WOB | Weight On Bit |
| WOC | Wait on Cement |
| WOC | Water Oil Contact (or Oil Water Contact) |
| WOE | Well Operations Engineer (a key person of Well services) |
| WOM | Wait(ing) on Material |
| WOR | Water-Oil Ratio |
| WORKO | Workover |
| WOS | West of Shetland, oil province on the UKCS |
| WOW | Wait(ing) On Weather |
| WP | Well Proposal or Working Pressure |
| WPC | Water Pollution Control |
| WPLAN | Well Course Plan |
| WPQ/S/T | Weld Procedure Qualification/Specification/Test |
| WPR | Well Prognosis Report |
| WQ | A textural parameter used for CBVWE computations (Halliburton) |
| WQCA | Water Quality Control Act |
| WQCB | Water Quality Control Board |
| WR | Wireline Retrievable (as in a WR Plug) |
| WR | Wet Resistivity |
| WRS | Well Report Sepia |
| WRSCSSV | Wireline Retrievable Surface Controlled Sub-Surface Valve |
| WSCL | Well Site Core Log |
| WSE | Well Seismic Edit |
| WSERE | Well Seismic Edit Report |
| WSHT | Well Shoot |
| WSL | Well Site Log |
| WSO | Water Shut Off |
| WSOG | Well Specific Operation Guidelines |
| WSP | Well Seismic Profile |
| WSR | Well Shoot Report |
| WSS | Well Services Supervisor (leader of Well services at the wellsite) |
| WSS | Working Spread Sheet (for logging) |
| WSSAM | Well Site Sample |
| WSSOF | WSS Offset Profile |
| WSSUR | Well Seismic Survey Plot |
| WSSVP | WSS VSP Raw Shots |
| WSSVS | WSS VSP Stacks |
| WST | Well Seismic Tool (checkshot) |
| WSTL | Well Site Test Log |
| WSU | Well Service Unit |
| wt | wall thickness |
| WT | Well Test |
| WTI | West Texas Intermediate benchmark crude |
| WUT | Water Up To |
| WVS | Well Velocity Survey |
| XC | Cross-connection, cross correlation |
| XL | or EXL, Exploration Licence (United Kingdom), a type of onshore licence issued between the First Onshore Licensing Round (1986) and the Sixth (1992) |
| Xln | Crystalline (minerals) |
| XLPE | Cross-linked Polyethylene |
| XMAC | Cross-Multipole Array Acoustic log |
| XMAC-E | XMAC Elite (Next generation of XMAC) |
| XMRI | Extended Range Micro Imager (Halliburton) |
| XMT/XT/HXT | XMas Tree (Christmas Tree, the valve assembly on a production well-head) |
| XO | Cross-Over |
| XOM | Exxon Mobil |
| XOV | Cross-Over Valve |
| XPERM | Matrix Permeability in the X-Direction |
| XPHLOC | Crossplot Selection for XPHI |
| XPOR | Crossplot Porosity |
| XPT | Formation Pressure Test log (Schlumberger) |
| XV | On/Off Valve (Process Control) |
| XYC | XY Calliper Log (Halliburton) |
| yd | yard |
| yl | Holdup Factor |
| YP | Yield Point |
| yr | year |
| Z | depth, in the geosciences referring to the depth dimension in any x, y, z data |
| ZDENP | Density Log |
| ZDL | Compensated Z-Densilog |
| ZLD | Zero Liquid Discharge |
| ZOI | Zone of Influence |
| abbrev | define |
|---|---|
| ASD | Alternate Stress Design |
| ACI | American Concrete Institute |
| AISC | American Institute of Steel Construction |
| AISI | American Iron and Steel Institute |
| ASTM | American Society for Testing and Materials |
| AWS | American Welding Society |
| AB | Anchor Bolt |
| B | Bottom |
| BM | Beam |
| BRG | Bearing |
| BLK | Block |
| BOF | Bottom of Foundation |
| BOT | Bottom |
| BRKT | Bracket |
| CIP | Cast-In-Place |
| CLR | Clear |
| COL | Column |
| CONC | Concrete |
| CMU | Concrete Masonry Unit |
| CRSI | Concrete Reinforcing Steel Institute |
| CONST JT | Construction Joint |
| CONT | Continuous |
| CJ | Control Joint |
| DEPR | Depression |
| DET | Detail |
| DL | Development Length |
| DIA | Diameter |
| DIM | Dimension |
| DIR | Direction |
| DWLS | Dowels |
| EA | Each |
| EE | Each End |
| EF | Each Face |
| EJ | Expansion Joint |
| ES | Each Side |
| EQ | Equal |
| EW | Each Way |
| EXP Bolt | Expansion Bolt |
| EXP JT | Expansion Joint |
| FF | Far Face |
| FT | Foot or Feet |
| FIN | Finish |
| FL | Floor |
| FTG | Footing |
| FND | Foundation |
| GALV | Galvanized |
| GA | Gauge |
| GR | Grade |
| GB | Grade Beam |
| GP | Gusset Plate |
| HT | Height |
| HP | High Point |
| HS | High Strength |
| HEF | Horizontal Each Face |
| HIF | Horizontal Inside Face |
| HOF | Horizontal Outside Face |
| HOR | Horizontal |
| IN | Inch |
| ID | Inside Diameter |
| ICBO | International Conference of Building Officials |
| INV | Invert |
| JT | Joint |
| JST | Joist |
| K | Kip (1000 Pounds) |
| LW | Light Weight |
| LWC | Light Weight Concrete |
| LRFD | Load and Resistance Factor Design |
| LLV | Long Leg Vertical |
| LP | Low Point |
| MAS | Masonry |
| MTL | Metal |
| NF | Near Face |
| NWC | Normal Weight Concrete |
| NIC | Not in Contract |
| OC | On Center |
| OD | Outside Diameter |
| OPNG | Opening |
| PC | Pile Cap |
| PL | Plate |
| PT | Point |
| PVC | Polyvinyl Chloride |
| PSF | Pounds per Square Foot |
| PSI | Pounds per Square Inch |
| R | Radius |
| REINF | Reinforced |
| RETG | Retaining |
| RET | Return |
| RE | Right End |
| SECT | Section |
| SC | Shear Connector |
| SHT | Sheet |
| SLV | Short Leg Vertical |
| SIM | Similar |
| SOG | Slab on Grade |
| SL | Splice Length |
| SQ | Square |
| STD | Standard |
| STL | Steel |
| SDI | Steel Deck Institute |
| SF | Step Footing or Square Foot |
| STIFF | Stiffener |
| STR | Structural |
| SUP | Support |
| SYM | Symmetrical |
| THK | Thick or Thickness |
| THRD | Threaded |
| T&B | Top and Bottom |
| T | Top |
| TO | Top of |
| TOC | Top of Concrete |
| TOF | Top of Foundation |
| TOS | Top of Steel |
| TOW | Top of Wall |
| TYP | Typical |
| UNO | Unless Noted Otherwise |
| US | Underside |
| VEF | Vertical Each Face |
| VIF | Vertical Inside Face or Verify in Field |
| VOF | Vertical Outside Face |
| WWF | Welded Wire Fabric |
| W/ | With |
| WP | Working Point |
| abbrev | define |
|---|---|
| AASHTO | American Association of State Highway and Transportation Officials www.transportation.org |
| ACI | American Concrete Institute www.concrete.org |
| ACS | Attestation de Conformit Sanitaire |
| AFS | American Foundrymen’s Society www.afsinc.org |
| AGA | American Gas Association |
| AI | The Asphalt Institute www.aga.org |
| AIA | American Institute of Architects www.aia.org |
| AISC | American Institute of Steel Construction www.aisc.org |
| AISI | American Iron and Steel Institute www.steel.org |
| AITC | American Institute of Timber Construction www.aitc-glulam.org |
| ANSI | American National Standards Institute www.ansi.org |
| APA | American Plywood Association www.apawood.org |
| API | American Petroleum Institute www.api.org |
| APWA | American Public Works Association www.apwa.net |
| ASA | American Standard Association www.ansi.org |
| ASCE | American Society of Civil Engineers www.asce.org |
| ASCI | Automation Standards Compliance Institute www.isa.org |
| ASM | Abnormal Situation Management Consortium www.asmconsortium.net |
| ASME | American Society of Mechanical Engineers www.asme.org |
| ASSE | American Society of Sanitary Engineers www.asse-plumbing.org |
| ASTM | American Society for Testing and Materials www.astm.org |
| ATM | Alaska Test Methods |
| AWPA | American Wood Preservers Association www.awpa.com |
| AWPI | American Wood Preservers Institute www.awpi.org |
| AWS | American Welding Society www.aws.org |
| AWWA | American Water Works Association www.awwa.org |
| BCS | British Computer Society www.bcs.org |
| BS | British Standards www.bsigroup.com |
| BSC | British Computer Society www.bcs.org |
| CBJ | City and Borough of Juneau www.juneau.org |
| CDA | Copper Development Association www.copper.org |
| CEN | European Committee for Standardization www.cen.eu |
| CENELEC | European Committee for Electrotechnical Standardization www.cenelec.eu |
| CFR | Code of Federal Regulations (US) www.cei.org |
| CLFMI | Chain Link Fence Manufacturer’s Institute www.chainlinkinfo.org |
| CMA | Concrete Masonry Association www.cma.org.za |
| CRE | API Committee for Refining Equipment |
| CRSI | Concrete Reinforcing Steel institute www.crsi.org |
| CSA | Canadian Standards Association www.csagroup.org |
| DCDMA | Diamond Core Drill Manufacturer’s Association |
| DIN | German Institute for Standardization www.din.de |
| DNV | Det Norske Veritas (Norway) www.dnvgl.com |
| EC | European Commission ec.europa.eu |
| EEMUA | Engineering Equipment & Materials Users’ Association www.eemua.org |
| EIA | Electronic Industries Association |
| EIA | Electronics Industries Association |
| EMC | Electromagnetic compatibility |
| EN | European Norm www.cencenelec.eu |
| ETL | Electrical Test Laboratories |
| FCI | Fluid Controls Institute (US) www.fluidcontrolsinstitute.org |
| FDT | Field Device Type |
| FPL | Forest Products Laboratory www.fpl.fs.fed.us |
| GOST | Gosstandart of Russia www.gost.ru |
| HCF | HART Communication Foundation www.hartcomm.org |
| IAS | IEEE Industry Applications Society ias.ieee.org |
| ICBO | International Conference of Building Officials global.ihs.com |
| IEC | International Electrotechnical Commission www.iec.ch |
| IEE | Institution of Electrical Engineers (UK) |
| IEEE | Institute of Electrical and Electronics Engineers www.ieee.org |
| IEEE | Institute of Electrical and Electronics Engineers (US) www.ieee.org |
| IES | Illuminating Engineering Society www.ies.org |
| IFE | Institute for Energy Technology (Norway) www.ife.no |
| IFEA | The Association for Electrotechnics and Automation in Industry (Norway) |
| IME | Institute of Makers of Explosives www.ime.org |
| IMO | International Maritime Organization www.imo.org |
| IMS | IEEE Instrumentation & Measurement Society ieee-ims.org |
| INC | EEMUA Instrumentation and Control Committee |
| IOS | International Organization for Standardization www.iso.org |
| IPCEA | Insulated Power Cable Engineers Association |
| ISA | Instrument Society of America www.isa.org |
| ISA | International Society of Automation (US) |
| ISO | International Organization for Standardization www.iso.org |
| ITE | Institute of Traffic Engineers www.ite.org |
| JIS | Japanese Industrial Standard www.jisc.go.jp |
| LAN | Local area network |
| MOA | Memorandum of Agreement www.advocatesforyouth.org |
| MODU | Mobile Offshore Drilling Units Code (IMO) |
| MSS | Manufacturers Standardization Society www.msshq.org |
| MTI | Marine Testing Institute |
| NACE | National Association of Corrosion Engineers www.nace.org |
| NACE | National Association of Corrosion Engineers (US) www.nace.org |
| NAMUR | Automation Systems Interest Group of the Process Industry (Germany) |
| NAS | National Aerospace Standard (US) |
| NBS | National Bureau of Standards www.nist.gov |
| NEC | National Electrical Code www.nfpa.org |
| NEK | Norwegian Electrotechnical Committee |
| NEMA | National Electrical Manufacturers Association (US) www.nema.org |
| NESC | National Electrical Safety Code standards.ieee.org |
| NFC | National Fire Code www.nrc-cnrc.gc.ca |
| NFPA | National Fire Protection Association www.nfpa.org |
| NFPA | National Forest Products Association www.awc.org |
| NFPA | National Fire Protection Association (US) www.nfpa.org |
| NLGI | National Lubricating Grease Institute www.nlgi-india.org |
| NORSOK | Norwegian Competitive Position on the Continental Shelf |
| NPD | Norwegian Petroleum Directorate www.npd.no |
| NS | Norwegian Standard www.standard.no |
| NWMA | National Woodwork Manufacturers Association www.wdma.com |
| OGP | International Association of Oil & Gas Producers www.iogp.org |
| OLF | Norwegian Oil Industry Association |
| OSHA | Occupational Safety and Health Administration www.osha.gov |
| OSHA | Occupational Safety and Health Administration (US) www.osha.gov |
| PAS | Publicly Available Specification (ISO) www.iso.org |
| PCA | Portland Cement Association www.cement.org |
| PD | Private Document (BSI) |
| PIP | Process Industry Practices (US) |
| PSA | Petroleum Safety Authority (Norway) www.psa.no |
| SAC | Standardisation Administration of China www.acronymattic.com |
| SAMA | Scientific Apparatus Makers Association |
| SCD | System Control Diagram www.standard.no |
| SDO | Standards Developing Organization unicode.org |
| SIL | Safety Integrity Levels |
| SOICS | API Subcommittee on Instruments & Control Systems |
| SOLAS | International Convention for the Safety of Life at Sea (IMO) www.imo.org |
| SPR | Simplified Practice Recommendation www.worldstdindex.com |
| SSPC | Steel Structures Painting Council www.sspc.org |
| SSPWC | Standard Specifications for Public Works Construction |
| TF | Task Force |
| TFI | The Fertilizer Institute www.tfi.org |
| TIA | Telecommunications Industry Association www.tiaonline.org |
| UBC | Uniform Building Code |
| UKOOA | UK Offshore Operator Association (Now UK Oil & Gas) www.ogp.org.uk |
| UL | Underwriters Laboratories Inc. |
| VDE | Association for Electrical, Electronic & Information Technologies |
| VDI | Association of German Engineers www.vdi.eu |
| WCLIB | West Coast Lumber Inspection Bureau www.wclib.org |
| WCRSI | Western Concrete Reinforcing Steel Institute worldcat.org |
| WCT | Wireless Cooperation Team |
| WIC | Woodwork Institute of California woodworkinstitute.com |
| WRI | Wire Reinforcement Institute Inc. |
| WWPA | Western Wood Products Association www.wwpa.org |
| abbrev | define |
|---|---|
| AAIAC * | Adventure Activities Industry Advisory Committee |
| AALA | Adventure Activities Licensing Authority |
| AALS | Adventure Activities Licensing Committee |
| ABCA | Military standards body for US, UK, Canada and Australia |
| ABCB | Association of British Certification Bodies |
| ABCL | Automatic barrier crossing, locally monitored |
| ABE | Association of Building Engineers |
| ABM | Activity based management |
| ABNT | Associacao Brasileira de Normas Tecnicas (Brazil) |
| AC | Advisory committee |
| AC | Asbestos cement |
| ACA | Association of Consultant Architects |
| ACAI | Alkali and Clean Air Inspectorate (see IAPI) now Environment Agency |
| ACAS | Advisory, Conciliation and Arbitration Service |
| ACDP * | Advisory Committee on Dangerous Pathogens |
| ACDS * | Advisory Committee on Dangerous Substances |
| ACE | Association for Consultancy and Engineering |
| ACES | Amusement Catering Equipment Society |
| ACGM * | Advisory Committee on Genetic Modification |
| ACL | Approved Carriage List |
| ACM | Asbestos-containing material |
| ACOP | Approved Code of Practice |
| ACP | Advisory Committee on Pesticides |
| ACRE | Advisory Committee on Releases to the Environment |
| ACTS * | Advisory Committee on Toxic Substances |
| AD * | Area Director now Operations Manager |
| ADI | Acceptable daily intake |
| ADN | European provisions concerning the international carriage of dangerous goods by inland waterways |
| ADR | Accord dangereux routier (European agreement concerning the international carriage of dangerous goods by road) |
| ADS * | Approved Dosimetry Service |
| AEAT | AEA Technology PLC |
| AENOR | Asociacion Espanola de Normalizacion y Certificacion |
| AFAIRP | As far as is reasonably practicable |
| AFCD | Automatic flue closing device |
| AFFF | Aqueous film forming foam |
| AFNOR | Association Francaise de Normalisation |
| AFP | Alphafetoprotein |
| AGR | Advanced gas-cooled reactor |
| AHB | Automatic half barrier |
| AHERA | Asbestos Hazard Emergency Response Act |
| AI | Active ingredient |
| AIA | Asbestos International Association |
| AIAC * | Agriculture Industry Advisory Committee |
| AIB | Asbestos Insulation Board |
| AIC | Active instability control |
| AIDII | Associazone Italiana Degli Igienisti Industriali |
| AIDS | Acquired immunedeficiency syndrome |
| AIFTA | Anglo-Irish Free Trade Agreement |
| AIOSH | Associate of the Institute of Occupational Safety and Health |
| AIRMIC | Association of Insurance and Risk Managers in Industry and Commerce |
| AIST | Agency of Industrial Science and Technology |
| AIT | Auto(geneous) ignition temperature |
| ALARA | As low as reasonably achievable |
| ALARP | As low as reasonably practicable |
| ALG | Association of London Government |
| ALI | Annual limit of intake |
| ALIBI | Assessment of LPG installations for Bleve incidents |
| ALPI * | Asbestos Licensing Principal Inspector |
| ALU | Asbestos Licensing Unit |
| AM * | Administration manager |
| AMAG | Agricultural Machinery Advisory Group |
| AMFO | Arbetsmiljofonden (Sweden) |
| AMPS | Association of Management and Professional Staff |
| ANC | Association of Noise Consultants |
| ANEC | Association Normalisation Europeenne pour les Consommateurs |
| ANFO | Ammonium nitrate/fuel oil |
| ANHMRC | Australian National Health and Medical Research Council |
| ANPAT | Association Nationale pour la Prevention des Accidents du Travail (Brussels) |
| ANPR | Automatic number plate recognition |
| ANSI | American National Standards Institute |
| AO * | Area office now Regional office |
| AOCL | Automatic open crossing, locally monitored |
| AOCR | Automatic open crossing, remotely monitored |
| AOCTs | Associated Overseas Countries and Territories |
| AOPD | Active opto-electronic protection device |
| APAU * | Accident Prevention Advisory Unit now Operations Unit |
| APB | Auditing Practices Board |
| APBL | Automatic power boom lowering (system) |
| APE | Aerosol photoemission |
| APE | Association of Planning Engineers |
| APELL | Awareness and preparedness for emergencies at local level |
| API | American Petroleum Institute |
| APOSC | Assessment principles for offshore safety cases |
| APPA | American Public Power Association |
| APS | Association of Planning Supervisors |
| AR | Acoustic reflex |
| ARC | Accelerating rate calorimetry |
| ARC | Audit Registration Committee |
| ARCA | Asbestos Removal Contractors Association |
| AREC | Association of Research Ethics Committees |
| ARL | Department of Community Services and Health Australian Radiation Laboratory |
| ARPS | Association of Railway Preservation Societies |
| ARTPR | Approved Requirements for Transportable Pressure Receptacles |
| ASAC | Asian Standards Advisory Committee |
| ASB | Accounting Standards Board |
| ASFP | Association for Specialist Fire Protection |
| ASHRAE | American Society of Heating, Refrigerating and Air Conditioning Engineers |
| ASHW | Agriculture (Safety, Health and Welfare Provisions) Act 1956 |
| ASI | Architect and Surveying Institute |
| ASLI | Automatic safe load indicator |
| ASLIC | Asbestos (Licensing) Regulations |
| ASME | American Society of Mechanical Engineers |
| ASNT | American Society for Nondestructive Testing |
| ASO | Assistant Scientific Officer |
| ASP | Accident sequence precursor |
| ASQ | American Society for Quality |
| ASS | National Board of Occupational Safety and Health (Sweden) |
| ASSE | American Society of Safety Engineers |
| ASTA | Association of Short-circuit Testing Authorities |
| ASTM | American Society for Testing and Materials |
| ATC | Automatic train control |
| ATEX | Atmosphere Explosiv (used in the context of two European Directives, 94/9/EC and 1999/92/EC) |
| ATO | Automatic train operation |
| ATP | Automatic train protection |
| ATR | Approved Tank Requirements |
| ATSDR | Agency for Toxic Substances and Disease Registry |
| ATV | All-terrain vehicle |
| ATWS | Anticipated transient without scram |
| ATWT | Anticipated transient without trip |
| AU | Accounting unit |
| AURPO | Association of University Radiation Protection Officers |
| AWE | Atomic Weapons Establishment |
| AWS | Automatic warning system |
| BA | Breathing apparatus |
| BA | Biological agent |
| BACS | Bankers automated clearing services |
| BACTA | British Amusement Catering Trades Association |
| BAFO | Best and final offer |
| BALPPA | British Association of Leisure Parks, Piers and Attractions |
| BAM | Bundesanstalt fur Materialprufung |
| BAPE | Benign asbestos pleural effusion |
| BASEEFA * | British Approvals Service for Electrical Equipment in Flammable Atmospheres (until July 2003) |
| BAT | Best available techniques |
| BAT | Biological Tolerance Value (Biologischer Arbeitsstoff-Toleranz-Wert) |
| BATNEEC | Best available techniques not entailing excessive cost |
| BAU | Bundesanstalt fur Arbeitsschutz und Unfallforschung |
| BCA | Building Control Authority |
| BCC | Biocides Consultative Committee |
| BCC | British Ceramic Confederation |
| BCECA | British Chemical Engineering Contractors Association |
| BCF | Bromochlorodifluoromethane |
| BCMC | British Cable Makers Confederation |
| BCME | Bis chloromethyl ether |
| BCRU | British Committee on Radiological Units |
| BEI | Biological exposure indices |
| BEL | Biological exposure limits |
| BEM | Business excellence model |
| BEBOH | British Examining Board in Occupational Hygiene |
| BERSA | British Elastic Rope Sports Association |
| BEU * | Business efficiency unit |
| BEUC | European Consumers’ Bureau |
| BEWA | British Effluent And Water Association |
| BFI | Benefit Fraud Inspectorate |
| BG | British Gas |
| BGH | Bundesgerichtshof (Germany) |
| BGS | British Geological Survey |
| BHSS | British Health and Safety Society |
| BIAT | British Institute of Architectural Technologists |
| BIMBO | Buy in management buy out |
| BIOH | British Institute of Occupational Hygiene |
| BIP | Business improvement programme |
| Bis CME | Bis chloromethyl ether |
| BLEVE | Boiling liquid expanding vapour explosion |
| BLR | Blue light radiation |
| BMA | Bundesministerium fuer Arbeit und Sozialordnung (Germany) |
| BMHB | British Materials Handling Board |
| BMTA | British Measurement and Testing Association |
| BNS | Bureau de Normalisation de la Siderurgie (France) |
| BNTA | Bureau de Normalisation du Tube Acier (France) |
| BOHS | British Occupational Hygiene Society |
| BOO | Build own operate |
| BOP | Balance of plant |
| BPBIF | British Paper and Board Industry Federation |
| BPCA | British Pest Control Association |
| BPD | Biocidal Products Directive |
| BPEO | Best practicable environmental option |
| BPF | British Property Federation |
| BPM | Best practicable means |
| BRAC | Building Regulations Advisory Committee |
| BRE | Building Research Establishment |
| BREF | Best available techniques reference documents |
| BREL | British Rail Engineering Limited |
| BRIB | Better Regulation and International Branch |
| BRINDEX | Association of British Independent Oil Corporation Companies |
| BROA | British Rig Owners Association |
| BRTF | Better Regulation Task Force |
| BRU | Better Regulation Unit |
| BSA | Business Software Alliance |
| BSC | Balanced scorecard |
| BSD * | Business Services Division |
| BSE | Bovine spongiform encephalopathy |
| BSI | British Standards Institution |
| BSO | Basic safety objective |
| BSOR | Borehole Sites and Operations Regulations |
| BSR | Board of Standards Review (ANSI) |
| BSS | Basic Safety Standards Directive |
| BSTSA | British Surface Treatment Suppliers Association |
| BTL | Better team leadership |
| BTM | Bromotrifluoromethane |
| BTP | British Transport Police |
| BTS | Bureau Technique Syndical Europ’ en par la Sant’ et la Securit’ (Belgium) |
| BVS | Bergbau Versuchsstrecke (W. Germany) |
| BWF | British Woodworking Federation |
| BWR | Boiling water reactor |
| C & I | Control and Instrumentation |
| CA | Certifying authority |
| CA(BA) | Compressed air (breathing apparatus) |
| CAC | Codex Alimentarius Commission |
| CADD | Computer-aided design drafting |
| CAER | Community Awareness and Emergency Response (Chemical Manufacturers Association) |
| CAIRS | Canadian Institute for Radiation Safety |
| CAM | Computer aided manufacture |
| CAMEO | Computer-aided management of emergency operations |
| CAMR | Centre for Applied Microbiology and Research |
| CANDU | A Canadian developed reactor deriving its name from Canadian deuterium uranium |
| CANMET-DEMR | Canada Center for Mineral and Energy Technology – Department of Energy, Mines and Resources |
| CANUTEC | Canadian Transport Emergency Center |
| CAPM | Computer-aided production management |
| CAPS | Computer aided planning system |
| CARICOM | Caribbean Community and Common Market (formerly CARIFTA) |
| CARIFTA | See CARICOM |
| CAS | Chemical Abstracts Service |
| CASE | Council for Associated Stock Exchanges |
| CAT | Cable avoiding tool |
| CAWR | Control of Asbestos at Work Regulations |
| CBI | Confederation of British Industry |
| CBN | Cubic boron nitride |
| CBNM | Central Bureau for Nuclear Measurements |
| CBP | Construction best practice |
| CBT | Computer based training |
| CC | Construction Confederation |
| CCA | Compliance cost assessment |
| CCAB | Consultative Committee of Accountancy Bodies |
| CCC | Confederation of Construction Clients |
| CCCN | Customs Cooperation Council Nomenclature (EC) |
| CCD | Charge coupled device |
| CCE | Commission of the European Communities |
| CCE | Computer controlled equipment |
| CCF | Common cause failures (see PES) |
| CCF | Construction Clients Forum |
| CCHARR | Co-ordinating Committee on Health Aspects of Radiation Research |
| CCIT | International Telegraph and Telephone Consultative Committee |
| CCNSG | Client Contractor National Safety Group |
| CCOU | Construction Central Operations Unit |
| CCScheme | Considerate Constructor Scheme |
| CCTA | Central Computer and Telecommunications Agency |
| CD | Central Division (Hazardous Installations Directorate) |
| CD | Consultation distance |
| CD | Consultative document |
| CDA | Controlled droplet application |
| CDC | Centers for Disease Control (USA) |
| CDFR | Commercial demonstration fast reactor |
| CDG Rail | Carriage of Dangerous Goods by Rail Regulations |
| CDGCPL | Carriage of Dangerous Goods by Road and Rail (Classification, Packaging and Labelling) Regulations |
| CDM | Construction Design and Management |
| CDR | Communicable disease report (compiled by CDSC) |
| CD-ROM | Compact disc read only memory |
| CDSC | Communicable Disease Surveillance Centre |
| CEA | Chemical Engineering Abstracts (Produced by the Royal Society of Chemistry) |
| CEA-CEN | Commissariat a l’Energie Atomique-Centre d’Etudes Nucleaires |
| CEB | Corporate Efficiency Board |
| CEC | Commission of the European Communities |
| CECA | Civil Engineering Contractors Association |
| CECC | CENELEC Electronic Components Committee |
| CEDEFOP | European Centre for the Development of Vocational Training |
| CEDHYS | Association des Directeurs des Systemes d’Information de l’Industrie Pharmaceutique |
| CEE | Communaute Economique Europeenne (French for EEC) |
| CEE | Communita Economica Europea (Italian for EEC) |
| CEE | International Commission on Rules for the Approval of Electrical Equipment |
| CEEC | Central and eastern European countries |
| CEEFA | Committee for Electrical Equipment for use in Flammable Atmospheres (committee representing BEAMA) |
| CEEMAC * | Certification of Electrical Equipment for Mining Advisory Council |
| CEEP | Centre Europeen de l’Entreprise Publique |
| CEF | Cluster enhanced filter |
| CEF | Comite Electrotechnique Francais |
| CEFIC | European Chemical Industry Council |
| CEFLC | European Council of Chemical Manufacturers Federation |
| CEHO | Chief Environmental Health Officer |
| CEI | Council of Engineering Institutions |
| CEMEC | European Centre for Disaster Management |
| CEN | Comite Europeen de Normalisation |
| CENCER | CEN’s certification body |
| CENELEC | Comite Europeen de Normalisation Electrotechnique |
| CEOC | Colloque Europeen des Organismes de Controle |
| CEPS | Central Expertise Policy and Support |
| CEPT | Conference Europeenne des Administrations des Postes et des Telecommunications |
| CER | Carriage of Explosives Regulations |
| CERCHAR | Centre d’Etudes et Recherches des Charbonnages de France |
| CERCLA | Comprehensive Environment Response Compensation and Liability Act (USA) |
| CERD | Comite Europeen de Recherche et Developpment |
| CERIAC * | Ceramics Industry Advisory Committee |
| CERTICO | Certification Committee of ISO |
| CESD | Communications Electronics Security Department |
| CESI | Centro Elettrotecnico Sperimentale Italiano (Italy) |
| CET | Corrected effective temperature |
| CFD | Computational fluid dynamics |
| CFDRA | Campden Food and Drink Research Association |
| CFEs | Centres of financial expertise |
| CFF | Common funding formula (education) |
| CFRP | Carbon fibre reinforced plastic |
| CGPM | General Conference of Weights and Measures |
| CGTF | Central Government Task Force |
| CHANs * | Chemical Hazard Alert Notices |
| CHAS | Contractors Health and Safety Assessment Scheme |
| CHCS | Chemical Hazards Communications Society |
| CHEMAG | Chemicals in Agriculture Advisory Group |
| CHEMFAX * | Computerised database with Chemicals NIG |
| CHEMSAFE | Chemical Industry Scheme for Assistance in Freight |
| CHEMTREC | Chemical Transportation Emergency Center (USA) |
| CHID * | Chemicals and Hazardous Installations Division |
| CHIEF | Customs handling of import and export freight |
| CHIMP | Commission for Health Improvement |
| CHIP | Chemical (Hazard Information and Packaging) Regulations |
| CHP | Combined heat and power |
| CHSC | Corporate health and safety committee |
| CHSG | Construction Health and Safety Group |
| CHSW | Construction (Health Safety and Welfare) Regulations |
| CI | Chief Inspector |
| CIAg * | Chief Inspector of Agriculture |
| CIB | Chartered Institute of Building |
| CIB | Construction Industry Board |
| CIBSE | Chartered Institution of Building Services Engineers |
| CID | Chemical Industries Division |
| CIDI | Central Index of Dose Information |
| CIDST | Comite d’Information et de Documentation Scientifique et Technique |
| CIEC | Construction Industry Employers’ Council |
| CIEH | Chartered Institute of Environmental Health |
| CIM * | Chief Inspector’s Memo |
| CIM | International Convention Concerning the Carriage of Goods by Rail |
| CIMAH | Control of Industrial Major Accident Hazards Regulations |
| CIOB | Chartered Institute of Building |
| CIRC | Centre International de Recherche sur le Cancer (France) |
| CIS | International Occupational Safety and Health Information Centre |
| CISDOC | International Labour Organisation database available on OSHROM |
| CISPR | Comite International Special des Perturbations Radioelectriques |
| CITB | Construction Industry Training Board |
| CJD | Creutzfeldt-Jakob disease |
| CLA | Copyright Licensing Authority |
| CLASP | Consortium of Local Authorities Special Programme |
| CLAW | Control of Lead at Work Regulations 1980 |
| CLEANAIR | Campaign for a Smoke-Free Environment |
| CLEAR | Campaign for Lead-Free Air |
| CLECAT | Comite de liaison Europeen des commissionnaires et auxiliaires de transports du marche commun |
| CLER | Classification and Labelling of Explosives Regulations |
| CLG | Constructors liaison group |
| CLP | Classification Packaging and Labelling |
| CM | Case manager |
| CM | Command (paper) 1987 – |
| CME | Chloromethyl ether |
| Cmnd | Command (paper) 1958 – 1986 |
| CMO | Chief Medical Officer |
| CN | Case note |
| CNC | Computer numerical control |
| CNRS | Centre National de la Recherche Scientifique (Paris) |
| CNS | Comite de Normalisation de la Soudure (France) |
| CO | Carbon monoxide |
| CO | Clerical Officer (now Administrative Officer) |
| COAD | Chronic obstructive airways disease |
| COBRA | Cabinet Office Briefing Room A |
| (Code) IN | Inspection (code) |
| (Code) LCA | Legal Commentary – Acts (Code) |
| (Code) LCR | Legal Commentary – Regulations (Code) |
| (Code) LP | Legal Proceedings (Code) |
| (Code) LPS | Legal Proceedings – Scotland (Code) |
| (Code) OP | Office Procedures (Code) |
| (Code) OR | Organisation (Code) |
| CODEX | Codex Alimentarius Commission |
| COE | Council of Europe |
| COFFIN* | Construction and factory fatal information (database) |
| COFREND | Comite Francais des Essais Non Destructifs |
| COGEMA | Compagnie General des Matieres Nucleaires |
| COGENE | Committee on Genetic Experimentation |
| COI | Critical oxygen index |
| COIN | Corporate Operational Information |
| COIT | Central Office of Industrial Tribunals |
| COMAH | Control of Major Accident Hazards |
| COMARE | Committee on Medical Aspects of Radiation in the Environment |
| COMITEXTIL | Comite de Coordination des Industries Textiles de la CEE |
| COMMETT | EEC programme in Education and Training for Technology |
| CONCAWE | Oil Companies European Organization for Environment, Health and Safety (Belgium) |
| CONDAM | Construction Design and Management Regulations |
| ConDoc * | Consultative Document |
| CONIAC * | Construction Industry Advisory Committee |
| COP | Code of Practice |
| COPA | Control of Pollution Act |
| COPANT | Pan American Standards Commission |
| COPD | Chronic obstructive pulmonary disease |
| COPOLCO | Committee on Consumer Policy (ISO) |
| COPR | Control of Pesticides Regulations |
| COREPER | Committee of Permanent Representatives to the European Communities |
| CORGI | Council for Registered Gas Installers |
| COSAS | Corporate Science and Analytical Services Division |
| COSHH | Control of Substances Hazardous to Health Regulations |
| COSLA | Convention of Scottish Local Authorities |
| COST | Cooperation Europeenne dans la Domaine de la Recherche Scientifique et Technique |
| COT | Committee on Toxicity in Food, Consumer Products and the Environment |
| COVENIN | Comision Venezolana de Norma Industriales (Venezuela) |
| CP | Code of Practice |
| CPA | Construction Products Association |
| CPA | Crop Protection Association |
| CPC | Chemical protective clothing |
| CPIG | Crown Premises Inspection Group |
| CPL | Classification, Packaging and Labelling of Dangerous Substances Regulations 1984 |
| CPR | Cardiopulmonary resuscitation |
| CPS | Crown Prosecution Service |
| CRA | Chemical Recovery Association |
| CRB | Criminal Records Bureau |
| CRE | Coal Research Establishment (part of BCC) |
| CREST | Comite de Recherche Scientifique et Technique (European Community) |
| CREIPI | Central Research Institute of Electric Power Institute (Japan) |
| CRMP | Corporate risk management plan |
| CSAT | Civil Service Arbitration Tribunal |
| CSBF | Civil Service Benevolent Fund |
| CSBTS | China State Bureau of Technical Supervision |
| CSC | Civil Service College |
| CSC | Civil Service Commission |
| CSC | (International) Convention for Safe Containers |
| CSCS | Construction Skills Certification Scheme |
| CSIS | Civil Service Insurance Society |
| CSNWC | Civil Service National Whitley Council |
| CSOHS | Civil Service Occupational Health Service |
| CSPA | Civil Service Pensioners Alliance |
| CSR | Comprehensive spending reviews |
| CSR | Corporate social responsibility |
| CSRF | Civil Service Retirement Fellowship |
| CSSA | Computer Services and Software Association |
| CSTP | Committee on Scientific and Technological Policy (OECD) |
| CSTU | Control Systems Technology Committee |
| CTD | Cumulative trauma disorder |
| CTG | Corporate topic group |
| CTI | Castings Technology International |
| CTMU | Central Training Management Unit |
| CTPV | Coal tar pitch volatiles |
| CTS | Carpal tunnel syndrome |
| CTSA | Channel Tunnel Safety Authority |
| CUE | Common user estate |
| CV | Calorific value |
| CV | Check visit |
| CVCS | Chemical and volume control system |
| CVD | Cardiovascular disease |
| CVS | Chorionic villus sampling |
| CWR | Continuous welded rail |
| CZ | Consultation zone |
| dB | Decibels |
| DB | Dry bulb |
| dB(A) | Decibels on the A weighted scale |
| DBA | Design basis accident |
| DBFO | Design build finance operate |
| DC | Direct chill (casting) |
| DCEHO | Deputy Chief Environmental Health Officer |
| DCI * | Decided Cases Index |
| DCI * | Deputy Chief Inspector |
| DCIF * | Deputy Chief Inspector of Factories |
| DCIO | Deputy Chief Inspecting Officer (of Railways) |
| DCLG | Department for Communities and Local Government |
| DCM | Deputy Case Manager |
| DCMS | Department of Culture Media and Sport |
| DCOA | Deregulation and Contracting Out Act 1994 |
| DCPD | Dicyclopentadiene |
| D/D | Division/Directorate |
| DD | Divisional Director |
| DDG * | Deputy Director General |
| DDPH | Deputy Director of Public Health |
| DE | Department of Employment now Department for Education and Employment |
| DEF STAN | Defence Standards |
| DEFRA | Department for Environment, Food and Rural Affairs |
| DEHO | District Environmental Health Officer |
| DEHS | Director of Environmental Health Services |
| DEL | Departmental Expenditure Limit |
| DEMKO | Danmarks Elektriske Materielkontrol (Denmark) |
| DEMU | Diesel-electric multiple unit |
| DEn | Department of Energy wound up in 1992 now part of DTI |
| DERA | Defence Evaluation and Research Agency |
| DEVCO | Development Committee (ISO) |
| DfES | Department for Education and Skills |
| DFM | Dust, fume and mist |
| DFRS | Defence Fire and Rescue Service |
| DFS | Defence Fire Service |
| DfT | Department for Transport |
| DG * | Director General |
| DG | Directorate General (EC) |
| DH | Department of Health |
| DH | Duty holder |
| DIANE | Direct Information Access Network for Europe |
| DIAS * | Directorate of Information and Advisory Services. Health and Safety Executive |
| DIN | Deutsches Institut fur Normung (German Standards Institute) |
| DIP | Document image processing |
| DIS | Draft International Standard |
| DISP | Duty Holder Intervention Strategy Planning Board |
| DL | Distance learning |
| DLR | Docklands Light Railway |
| DMB | Divisional Management Board |
| DMU | Diesel multiple unit |
| DNA | Deoxyribonucleic acid |
| DNB | Departure from nucleate boiling |
| DNHPD | Department of National Health and Population Department (South Africa) |
| DO | Dangerous occurrence |
| DoE | Department of the Environment now Department for Environment, Food and Rural Affairs |
| DOE | Department of Energy (United States) |
| DOL | Department of Labor (United States) |
| DOT | Department of Transport now part of Department Transport, Local Government and the Regions |
| DOT | Department of Transportation (United States) |
| DP | Disabled person |
| DPE | Duty holder planning event |
| DRC | Disaster Research Centre (USA) |
| DS | Danish Standards Association |
| DSAC | Design safety analysis and control |
| DSC | Design safety case |
| DSC | Differential scanning calorimetry |
| DSE | Display screen equipment |
| DSEAR | Dangerous Substances and Explosives Atmospheres Regulations |
| DSHA Regs | Dangerous Substances in Harbours and Harbour Areas Regulations |
| DSO | Direct service organisation |
| DSS | Department of Social Security |
| DST * | Directorate of Science and Technology |
| DTA | Differential thermal analysis |
| DTI | Department of Trade and Industry |
| DTLR | Department for Transport, Local Government and the Regions |
| DTM | Desk top monitoring |
| DVD | Digital versatile disc |
| DVT | Driver van training |
| DWC | Department Whitley Council |
| DWL | Derived working levels |
| DWP | Department for Work and Pensions |
| EA | Environment Agency |
| EA75 | Explosives Act 1875 |
| EA regs | Health and Safety (Enforcing Authority) Regulations |
| EAC | European Agency for Cooperation (EC) |
| EAE | Evidence analysis and evaluation |
| EAEC | European Atomic Energy Community |
| EARA | European Asbestos Removal Association |
| EAS | Enterprise allowance scheme |
| EASE | Estimation and assessment of substance exposure |
| EASHW | European Agency for Safety and Health at Work |
| EAU * | Economic Advisors’ Unit (part of Policy Unit) |
| EAZ | Education action zone |
| EBW | Electron beam welding |
| EC | European Commission |
| EC | European Communities |
| ECA | Electrical Contractors Association |
| ECA | Economic Commission for Africa (UN) |
| ECA | European Chemicals Agency |
| ECAC | European Civil Aviation Conference |
| ECCS | Emergency core cooling system |
| ECDIN | Environmental Chemical Data Information Network (EC) |
| ECE | Economic Commission for Europe (UN) |
| ECETOC | European Chemical Industry Ecology and Toxicology Centre |
| ECG | European co-operation grouping |
| ECGD | Export Credits Guarantee Department |
| ECIA | Engineering Construction Industry Association |
| ECIS | European Communities Information Service |
| ECISS | European Committee for Iron and Steel Standardisation |
| ECITC | European Committee for I.T. Testing and Certification |
| ECL | Exposure control limit |
| ECMA | European Computer Manufacturers Association |
| ECOIN | European core inventory |
| ECS | Empty coaching stock |
| ECSU * | Electrical Certification Support Unit |
| ED | Employment Department now Department for Education and Skills |
| EDG | Employment Department Group |
| EDI | Electronic data interchange |
| EDO | Estate duty office |
| EDTA | Ethylene diaminetetraacetic acid |
| EEB | European Environmental Bureau |
| EECMB * | Electrical Equipment Certification Management Board |
| EECS * | Electrical Equipment Certification Service |
| EEF | Engineering Employers Federation |
| EEG | Europese Economische Gemeenschap (Dutch for EEC) |
| EEI | Edison Electric Institute |
| EEL | Emergency exposure limit |
| EEMUA | Engineering Equipment and Materials Users Association |
| EER | Emergency evacuation and rescue |
| EER | Evacuation, escape and rescue |
| EERA | Evacuation, escape and rescue assessment |
| EFL * | Explosion and Flame Laboratory, now part of HSL |
| EFTA | European Free Trade Association |
| EHO | Environmental health officer |
| EHSR | Essential health and safety requirement |
| EI * | (HM) Explosives Inspectorate |
| EIA | Environmental impact assessment |
| EIC | Energy Industries Council |
| EINECS | European Inventory of Existing Commercial Chemical Substances |
| ELCB | Earth leakage circuit breaker |
| ELCI | Employers’ Liability Compulsory Insurance |
| ELF | Extra low frequency |
| ELINCS | European list of notified chemical substances |
| ELO * | Enforcement liaison officer |
| EM * | Explanatory memorandum |
| EMA * | Employment Medical Adviser |
| EMAS * | Employment Medical Advisory Service |
| EMR | Electromagnetic radiation |
| EMSU * | Epidemiology and Medical Statistics Unit |
| EMU | Electrical multiple unit |
| EMU | European Economic and Monetary Union |
| EN | European Standard |
| ENA * | Employment Nursing Adviser |
| ENB | Explosives Notified Body |
| EO | Ethylene oxide |
| EO | Executive Officer |
| EOF | Europaeiske Okonomiske Faellesskab (Danish for EEC) |
| EOTC | European Organisation for Conformity Assessment |
| EPA | Environmental Protection Act |
| EPA | Environmental Protection Agency (USA) |
| EPI-DERM | Surveillance scheme for occupational skin disease |
| EPO | European Patent Organisation |
| EPOCH | European Programme on Climatology and Natural Hazards |
| EPS | Enforcement policy statement |
| EPS | European Pre-standard |
| ERB | Engineers Registration Board (CEI) |
| ERIC | Emergency response intervention card |
| ERL | Emergency reference level |
| ES | Ergonomics Society |
| ESAC * | Education Services Advisory Committee |
| ESB * | Executive Support Branch now Senior Management Support Unit |
| ESC | Economic and Social Committee (EC) |
| ESD | Emergency shutdown device |
| ESF | European Social Fund |
| ESFR | Early suppression fast response |
| ESH | Electric surface heating |
| ESP | Electrostatic precipitator |
| ESPRIT | European Strategic Programme for Research and Development in Information Technology |
| ESRA | European Safety and Reliability Association |
| ESReDA | European Safety Reliability and Data Association |
| ESTC | Explosives Storage and Transport Committee |
| ETS | Environmental tobacco smoke |
| ETS | European Telecommunications Standards |
| ETSI | European Telecommunications Standards Institute |
| ETVA | Elektrotechnische Versuchsanstalt (Austria) |
| EU | European Union |
| EURADOS | European Radiation Dosimetry Group |
| EURATOM | European Atomic Energy Community |
| EUROCONTROL | European Organisation for the Safety of Air Navigation |
| EUROCOOP | European Community of Consumers’ Co-operatives |
| EUROMAP | European Plastics Machinery Suppliers’ Association |
| EUROSH*NET | European Occupational Safety and Health Network |
| EUROSTATS | Series of statistics produced by the SOEC |
| EUROVENT | European Committee of Air Handling and Air Conditioning Equipment Manufacturers |
| EWC | European Works Councils |
| EWG | Europaeische Wirtschaftsgemeinschaft |
| EXCO | Executive Committee (ISO) |
| EXP | Expanded polystyrene |
| EXTEST | International Study Group for the Standardisation of Methods of Testing Explosives |
| EZ | Enterprise zone |
| F & GPC | Finance and General Purposes Committee (sub-committee of NEC) |
| F&RA | Fire and Rescue Authority |
| FAC | Food and Agriculture Committee |
| FAO | Food and Agriculture Organization of the United Nations |
| FAST | Federation against Software Theft |
| FASTCo | Forestry and Arboriculture Safety and Training Council |
| FBG | Fluidised bed generator |
| FCG * | Field Consultant Group |
| FC(SP)R | Fire Certificate (Special Premises) Regulations 1976 |
| FDA | Food and Drug Administration (USA) |
| FDA | Association of First Division Civil Servants |
| FDIS | Final Draft International Standard |
| FEPA | Food and Environment Protection Act |
| FER | Fundamental Expenditure Review |
| FFI | Flexible film isolator |
| FI * | (HM) Factory Inspectorate |
| FIAC * | Foundries Industry Advisory Committee |
| FIC * | Factory Inspectorate (Subject File) Circular |
| FIM * | Factory Inspectorate Minute |
| FIN * | Factory Inspectorate Note |
| FINU * | Finance Unit (part of Resources and Planning Directorate) |
| FIRA | Furniture Industry Research Association |
| FIRAC * | Factory Inspectorate Research Advisory Committee |
| FISM * | Factory Inspectorate Specialist Minute |
| FISP * | Financial Systems and Payments |
| Fit3 | Fit for work, fit for life, fit for tomorrow |
| FL | Flexileave |
| FLP | Flameproof |
| FLT | Fork lift truck |
| FM | Factory Mutual (USA) |
| FMAS | Financial Management Accounting System |
| FMB | Federation of Master Builders |
| FMI | Financial Management Initiative |
| FMU * | Field Management Unit |
| FOCUS * | Field Operations Computer System |
| FOD * | Field Operations Directorate |
| FOD MB | FOD Management Board |
| FOILE | FOD’s iInterventions with large employers |
| FOM * | Fortnightly Operational Minute (issued by FOD) |
| FOPS | Falling Object Protective Structure(s) |
| FOU | For Official Use |
| FP* | Field Professional |
| FPA71 | Fire Precautions Act 1971 |
| FPO | Fire Prevention Officer |
| FPSO | Floating production storage and off-loading unit |
| FPU * | Finance and Planning Unit |
| FP(W)R | Fire Precautions (Workplace) Regulations 1997 |
| FRAB | Financial Reporting and Advisory Board |
| FRS | Financial Reporting Standards |
| FRS | Fire Research Station (part of BRE) |
| FSA | Financial Services Authority |
| FSA | Foreign Service Allowances |
| FSA | Food Standards Agency |
| FSAC | Food Safety Advisory Centre |
| FSBP | Finger systolic blood pressure |
| FSO | Fire Safety Officer |
| FSO | Formal Second Opinion |
| FSR | Filter self-rescuer (mining) |
| FSSU * | Field Scientific Support Unit now Field Services Unit |
| FST | Finger skin temperature |
| FSU * | Field Services Unit |
| FSU | Floating storage unit |
| FSV | Free steered vehicle |
| FWH | Flexible working hours |
| FWR | Functional work recording system |
| GAAP | Generally Accepted Accounting Practice |
| GAD | Gas Appliances Directive |
| GAD | Government Actuaries Department |
| GAE | General Administrative Expenditure |
| GAMBICA | Association for the Instrumentation, Control and Automation Industry in the UK |
| GATT | General Agreement on Tariffs and Trade |
| GDO | General Development Order |
| GDP | Gross Domestic Product |
| GDPO | General Development Procedure Order |
| GFP | General fire precautions |
| GGF | Glass and Glazing Federation |
| GHGB | Good Health is Good Business |
| GHS | Globally Harmonised Systems |
| GIE | Groupement d’Interet Economique |
| GILSP | Good industrial large scale practice |
| GLA | Gangmaster Licensing Authority |
| GLA | Greater London Authority |
| GLC | Gas liquid chromatography |
| GLP | Good laboratory practice |
| GLSP | Good large scale practice |
| GLW | Gross laden weight |
| GM | Genetically modified |
| GM | Guidance Memoranda |
| GMAW | Gas metal arc welding |
| GMO | Genetically modified organism |
| GN | Guidance Note |
| GN:CS | Guidance Note : Chemical Safety |
| GN:EH | Guidance Note : Environmental Health |
| GN:GS | Guidance Note : General Series |
| GN:MS | Guidance Note : Medical Series |
| GN:PM | Guidance Note : Plant and Machinery |
| GNVQ | General National Vocational Qualification |
| GOST USSR | State Committee for Standards |
| GPA | Agreement on Government Procurement |
| GRP | Glass reinforced plastic |
| GSI | Government Secure Intranet |
| GSMR | Gas Safety Management Regulations |
| GSTP | Generalised System of Tariff Preferences |
| GT | Globe thermometer |
| GTA | Government Technical Adviser |
| GTAW | Gas tungsten arc welding |
| HACCP | Hazard analysis critical control point |
| HAI | Hospital acquired infections |
| HAM | Hand held monitor |
| HASAC | Health and Safety Advice Centre |
| HASAWA | * Health and Safety at Work Act 1974 |
| HASCOG | Health and Safety Co-ordinating Group (IEHO) |
| HAV | Hand-arm vibration |
| HAV | Hepatitis A virus |
| HAZAN | Hazard analysis numerical methods |
| HAZCOM | Hazards Communication Standard |
| HAZOP | Hazard and Operability Study |
| HBIG | Hepatitis B immunoglobulin |
| HBV | Hepatitis B virus |
| HC | Health Circular (DH) |
| HD | Harmonization Document |
| HD | * Health Directorate |
| HD | Hodgkins disease |
| HECR | Highly exothermic chemical reactions |
| HEDSET | Harmonised electronic data set (European Communities) |
| HELA | * Health and Safety Executive/Local Authorities Enforcement Liaison Committee |
| HEO | Higher Executive Officer |
| HEPA | High efficiency particulate air (refers to high efficiency air filters) |
| HEPOL | * Health and Safety Executive/Police force Enforcement Liaison Committee |
| HES | Home electronic systems |
| HFL | Highly flammable liquid |
| HGV | Heavy goods vehicle |
| HHE | Health Hazard Evaluation |
| HHS | Hypothenar hammer syndrome |
| HHSI | High-head safety Injection |
| HI | Hazardous installation |
| HIA | Health Impact Assessment |
| HID | Hazardous Installations Directorate |
| HIPU | * Hazardous Installations Policy Unit, now part of CHID |
| HIV | Human Immunovirus/immunodeficiency virus |
| HMAI | * Her Majesty’s Agricultural Inspectorate, now part of FOD |
| HMAC | Hazardous Materials Advisory Council (U.S.A.) |
| HMCG | Her Majesty’s Coastguard |
| HMEI | * Her Majesty’s Explosives Inspectorate |
| HMFI | * Her Majesty’s Factory Inspectorate |
| HMIM | * Her Majesty’s Inspectorate of Mines |
| HMIP | Her Majesty’s Inspectorate of Pollution (part of Environment Agency) |
| HMIPI | Her Majesty’s Industrial Pollution Inspectorate for Scotland |
| HMNII | * Her Majesty’s Nuclear Installations Inspectorate |
| HMRI | * Her Majesty’s Railway Inspectorate |
| HN | Health Notice (DH) |
| HNMR | High resolution nuclear magnetic resonance |
| HO | Home Office |
| HoOPs | Head of Operations |
| HOTL | Heads of Testing Laboratories Working Group of the EEC |
| HPD | * Health Policy Division now Health Directorate |
| HPD | Hearing protection devices |
| HPLC | High performance liquid chromatography |
| HPM | Hazardous production materials |
| HPTLC | High performance thin layer chromatography |
| HPV | High production volume |
| HRD | * Human Resource Development |
| HRM | * Human Resource Management |
| HRMB | * Human Resource Management Branch |
| HRR | Health Risk Review |
| HRSC | Human resources service centre |
| HRU | * Human Resources Unit |
| HSA | Hazardous Substances Authority |
| HSA | Health and Safety Adviser |
| HSA | Health and Safety Authority (Republic of Ireland) |
| HSAC | * Health Services Advisory Committee |
| HSAM | * Health and Safety Administrative Minute |
| HSAM(GAP) | * Health and Safety Administrative Minute (General Administrative Procedures) |
| HSAM(INF) | * Health and Safety Administrative Minute (Information) |
| HSAM(PM) | * Health and Safety Administrative Minute (Personnel Management) |
| HSAO | Health and Safety Awareness Officer |
| HSC | * Health and Safety Commission |
| HSCER | Health and Safety (Consultation with Employers) Regulations |
| HSE | * Health and Safety Executive |
| HS(EA) Regs | * The Health and Safety (Enforcing Authority) Regulations 1977 |
| HSE(M) | * HSE Electrical Equipment Certification and Approvals Authority (Mining) |
| HSELINE | * HSE Information Services publicly available computerised database of bibliographic references on health and safety at work. Also available on OSHROM |
| HSEM | * Health and Safety Executive Minute |
| HSENI | Health and Safety Executive Northern Ireland |
| HSG | Health and Safety Guidance Booklet |
| HS(G) | * Health and Safety (Guidance) (Booklet) |
| HSK | Hauptabteilung fuer die Sicherheit der Kernanlagen Bundesamt fuer Energiewirtschaft (Switzerland) |
| HSL | * Health and Safety Laboratory |
| HSO | Higher Scientific Officer |
| HSPL | Health and Safety Policy Liaison (Department of Environment) |
| HS(R) | * Health and Safety (Regulations) (Booklet) |
| HST | High Speed Train |
| HSW Act | Health and Safety at Work, etc. Act 1974 |
| HSWA | Health and Safety at Work etc. Act 1974 |
| HT | Hazard type |
| HT | High tension (electrical) |
| HTLV(III) | Human T-cell lymphotropic virus |
| HTML | Hypertext mark up language |
| HTR | High temperature reactor |
| HV | High voltage |
| HVAC | Heating, ventilating and air conditioning |
| HVCA | Heating and Ventilation Contractors Association |
| HWE | Healthy Worker Effect |
| HWI | Hazardous Waste Inspectorate (DoE) |
| Hz | Hertz |
| HzSC | Hazardous Substances Consent |
| IAC * | Industry Advisory Committee |
| IADC | International Association of Drilling Contractors |
| IAES | International Academy of Environmental Safety |
| IALI | International Association of Labour Inspection |
| IAM | Institute of Advanced Motorists |
| IARC | International Agency for Research on Cancer (WHO) |
| IAS * | Information and Advisory Services |
| IB | International Branch (part of Policy Unit) |
| IBN | Institut Belge de Normalisation (Belgium) |
| ICANN | International Cooperation for Assigned Names and Numbers |
| ICAO | International Civil Aviation Organization |
| ICAP | International Code Assessment and Applications Programme |
| ICC | International Chamber of Commerce |
| ICE | Institute of Chartered Engineers |
| ICES | Institute of Civil Engineering Surveyors |
| ICFMH | International Committee on Food Microbiology and Hygiene |
| ICNIRP | International Commission on Non-Ionising Radiation Protection |
| ICOEH | International Commission for Occupational and Environmental Health |
| ICOH | International Commission on Occupational Health (Singapore) |
| ICOMH | International Committee on Occupational Mental Health |
| ICONE | Index Comparatif des Normes Europeenes (comparative index of European Standards) |
| ICPEMC | International Commission for Protection Against Environmental Mutagens and Carcinogens |
| ICRP | International Commission on Radiological Protection |
| ICRU | International Commission on Radiation Units and Measurements |
| ICS | International Classification for Standards |
| ICS | Investors Compensation Scheme |
| ICSCA | Industry Co-operation on Standards and Conformity Assessment |
| ID | Infectious dose |
| ID | Internal diameter |
| IDCAFS | Inter-departmental Committee on Animal Feeding Stuffs |
| IDE | Institute of Demolition Engineers |
| IDEA | Improvement and Development Agency |
| IDLH | Immediately Dangerous to Life or Health |
| IEA | International Energy Agency (OECD) |
| IEB * | International and Environment Branch now International Section |
| IEC | International Electrotechnical Commission |
| IECC | Integrated Electronic Control Centre |
| IECEE | International Electrotechnical Commission’s Certification Scheme |
| IEE | The Institution of Electrical Engineers |
| IEIC | Independent Engineering Insurers’ Committee |
| IER | Institute of Employment Research now Institute of Employment Studies |
| IES | Institute for Employment Studies |
| IFAN | International Federation for the Application of Standards |
| IG | Immunoglobulin |
| IG * | Industry Group |
| IGUS | International Group for Unstable Substances (OECD) |
| IHAC | Industrial Health Advisory Committee |
| IHSSF | International Healthcare Safety and Security Foundation |
| IIAC | Industrial Injuries Advisory Council |
| IiP | Investors in People |
| IIRSM | International Institute of Risk and Safety Management |
| ILA | Individual learning account |
| ILAC | International Laboratory Accreditation Scheme |
| ILB | Industry Lead Body |
| ILE | Institution of Lighting Engineers |
| ILGRA | Interdepartmental Liaison Group on Risk Assessment |
| ILMS * | Integrated Library Management System |
| ILO | International Labour Organisation |
| ILO * | Information Liaison Officer |
| ILS | Industrial Law Society |
| ILT | Industrial Language Training |
| ILV | Indicative Limit Value (now known as IOELVs – Indicative Occupational Exposure Limit Values |
| ILW | Intermediate level waste |
| ILWS | Inductive loop warning system |
| IM * | Information Manager |
| IMDG | International Maritime Dangerous Goods Code |
| IMECHE | Institution of Mechanical Engineers |
| IMO | International Maritime Organization (was IMCO) |
| IMS | Industrial methylated spirit |
| IMT | Inspection Management Team |
| IMU | Information Management Unit |
| IMW | Institute of Wastes Management (Northampton) |
| IN | Improvement Notice |
| IN | Issue Note |
| INCOTERMS | International rules for interpretation of terms frequently used in foreign trade contracts |
| INDG | Industry Guidance |
| IND(G) | Industry Guidance |
| INFCO | Standing Committee for the Study of Scientific and Technical Information on Standardization (ISO) |
| INFOTERRA | International Referral System for Sources of Environmental Information (UN) |
| INIEX | Institut National des Industries Extractives (Belgium) |
| INIS | International Nuclear Information Service (IAEA) |
| INM | Institute of Naval Medicine (Royal Navy) |
| INPACT | Institut pour l’Amelioration des Conditions de Travail (France) |
| INPO | Institute of Nuclear Power Operations |
| INRS | Institut National de Recherche et de Securite (France) |
| INSEAD | Institut Europeen d’Administration des Affaires |
| INSHT | Instituto Nacional de Seguridad e Higiene en el Trabajo (Spain) |
| INTERTANKO | International Association of Independent Tanker Owners |
| INTEREP * | HSE and Information Services’ computerised database of bibliographic references to confidential and unpublished documents on health and safety at work. Restricted to HSE staff |
| INTEREX * | HSE Information Services computerised database of exchange agreements with organisations in the UK and abroad |
| IO | Inspecting Officer (of Railways) |
| IOD | Institute of Directors |
| IOELV | Indicative Occupational Exposure Limit Value |
| IOH | Institute of Occupational Health (University of Birmingham) |
| IOH | Institution of Occupational Hygienists |
| IOHA | International Occupational Hygiene Association |
| IOM | Institute of Occupational Medicine (Edinburgh) |
| IOMC | Interorganisation Programme for the Sound Management of Chemicals |
| IOSH | Institution of Occupational Safety and Health |
| IP | Injured person |
| IP | Institute of Physics |
| IPA | Isopropyl alcohol |
| IPC | Integrated pollution control |
| IPG * | Information Planning Group |
| IPLA | HM Inspectorate of Pollution/LA Enforcement Liaison Committee |
| IPMS | Institution of Professionals, Managers and Specialists |
| IPPC | Integrated pollution prevention and control |
| IPPR | Institute for Public Policy Research |
| IPR | Integrated pollution regulation |
| IPS | Integrated Protection System |
| IPT | Insurance Premium Tax |
| IQS | Institute of Quantity Surveyors |
| IR | Infra red |
| IR | Ionising radiation |
| IRAM | Instituto Argentino de Racionalizacion de Materiales (Argentina) |
| IRIS | Integrated Risk Information System (USA) |
| IRLR | Industrial Relations Law Report |
| IRM | Inspection repair and maintenance (Offshore) |
| IRM | Institute of Risk Management |
| IRO | Integrated Regional Offices |
| IRP | Institute of Radiation Protection |
| IRP | Intellectual Property Rights |
| IRPA | International Radiation Protection Association |
| IRPTC | International Register of Potentially Toxic Chemicals (UN) |
| IRR | Ionising Radiations Regulations |
| IRRG | Ionising Radiations Research Group |
| IRRV | Institute of Revenues Rating and Valuation |
| IR(SS) Regs | Ionising Radiations (Sealed Sources) Regulations |
| IR(URS) Regs | Ionising Radiations (Unsealed Radioactive Substances) Regulations |
| IS * | Information Services |
| IS * | Information Specialist |
| IS | Intrinsic safety |
| IS | Intrinsically safe |
| ISBN | International Standard Book Number(ing) |
| ISCA | International Standards Steering Committee for Consumer Affairs |
| ISEC | Information Strategy Executive Committee |
| ISGOTT | International Safety Guide for Oil Tankers and Terminals |
| ISI | In-service inspection |
| ISIC | International standard industrial classification |
| ISO | International Organization for Standardization |
| ISP | International Standard Problem |
| ISRS | International Safety Rating System |
| ISSA | International Social Security Association |
| ISSG | Information Strategy Steering Group |
| ISTR | Institute of Safety in Technology and Research |
| ISVR | Institute of Sound and Vibration Research (Southampton) |
| IT | Industrial Tribunal |
| IT | Information technology |
| ITB | Industry Training Board |
| ITB | Insurance Technical Bureau |
| ITSA | Independent Tank Storage Association |
| ITSI | Information Technology Standards Institute |
| IUPAC | International Union of Pure and Applied Chemistry |
| IWEM | Institution of Water and Environmental Management |
| IWM | Institute of Wastes Management |
| IZ | Inner zone |
| JAC | Joint Advisory Committee |
| JACR | Joint Advisory Committee Report |
| JDI | Joint Declaration of Intent |
| JDS | Joint Disciplinary Scheme |
| JEA | Japan Electric Association |
| JEC | Japanese Electrotechnical Committee |
| JFRO | Joint Fire Research Organisation |
| JIB | Joint Industry Board for the Electrical Contracting Industry |
| JIC | Joint Industrial Council |
| JIG | Job Interview Guarantee |
| JIS | Japanese Standard Association |
| JISC | Japanese Industrial Standards Committee |
| JISC | Joint Industry Safety Committee |
| JML | Japanese Ministry of Labour |
| JNC | Joint National Committee (IPMS, FDA, SCS) |
| JOCE | Journal Officiel des Communautes Europeennes |
| JRC | Joint Research Centre (EURATOM) |
| JSC | Joint Standing Committee |
| JSCR | Joint Standing Committee Report |
| JWG | Joint Working Group |
| JWP | Joint Working Party |
| KAN | Kommission Arbeitsschutz und Normung |
| KHF | Know How Fund |
| KIT | Keep in touch |
| KTA | Kerntecnischer Ausschuss |
| KWU | Kraftwerk Union |
| LA | Local authority |
| LAA | Laboratory animal allergy |
| LAA | Local Authority Associations |
| LAAPS | Local Authority Accident Prevention and Safety Services |
| LAC | Local Authority Circular |
| LACOTS | Local Authority Committee on Trading Standards |
| LADD | Lifetime average daily dose |
| LASER | Light amplification by stimulated emission of radiation |
| LASP | Local Authorities Strategic Programme |
| LASS | Leisure Accident Surveillance System |
| LAU | Local Authority Unit |
| LAUTRO | Life Assurance and Unit Trust Regulatory Office |
| LBA | London Boroughs Association |
| LBCNC | Land Based Colleges National Consortium |
| LBRO | Local better regulation office |
| LC * | Licence condition |
| LCDP | Local career development panels |
| LCIE | Laboratoire Central des Industries Electriques (France) |
| LCLo | Lethal concentration low |
| LCRG | Local Career Review Group |
| LC5O | Lethal concentration 50 |
| LD | Land Division |
| LDA | Linear photodiode array |
| LDG | List of dangerous goods |
| LDLo | Lethal dose low |
| LD50 | Lethal dose fifty |
| LEA | Local Enterprise Agency |
| LEL | Lower explosive limit |
| LEL | Lower exposure limit |
| LEQ | Equivalent continuous sound level |
| LEQ(8)hr | Equivalent Continuous Sound Level (normalised to 8 hours) |
| LEV | Local exhaust ventilation |
| LFDCA | London Fire and Civil Defence Authority |
| LFL | Lower flammability limit |
| LFS | Labour Force Survey |
| LGA | Local Government Association |
| LGSC | Landlord’s gas safety certificate |
| LGTF | Local Government Task Force |
| LIF | Laser induced fluorescence |
| LIF | Lighting Industry Federation |
| LIFFE | London International Financial and Futures Exchange |
| LIMS | Laboratory Information Management Systems |
| LIS * | Library and Information Services, now Information Services |
| LITTS | Large Inventory Top Tier Site(s) |
| LLC * | Local Liaison Committee |
| LLMI | Local Labour Market Intelligence |
| LLP | Limited Liability Partnerships |
| LMFBR | Liquid metal fast breeder reactor |
| LMS | Labour Market System (employment data) |
| LNG | Liquefied natural gas |
| LOCA | Loss of coolant accident |
| LOCAE | List of Classified and Authorised Explosives |
| LOD | Limit of Detection |
| LOEL | Lowest Observed Effect Level |
| LOFT | Loss of Fluid Test Programme (OECD) |
| LOLER | Lifting Operations and Lifting Equipment Regulations |
| LOPP | Large Organisations Pilot Project |
| LOQ | Limit of Quantitation |
| LOX | Liquid oxygen |
| LP | Liquefied petroleum |
| LP | Low pressure |
| LPA | Local Planning Authority |
| LPC | Loss Prevention Council |
| LPG | Liquefied petroleum gas |
| LPGA | Liquefied Petroleum Gas Association |
| LPGITA | Liquefied Petroleum Gas Industry Technical Association |
| LREC | Local Research Ethics Committee |
| LRT | Light rapid transit |
| LRV | Light rail vehicle |
| LSEV | Laboratoire des Substances Explosives de Vemeuil |
| LSS | Load scaling sensitivity |
| LTA | Lost time accident |
| LTI | Lost time incident |
| LTSRs | Long Term Safety Reviews |
| LUL | London Underground Limited |
| LV | Low voltage |
| LV | Low volume |
| LVD | Low voltage directive |
| LWC | Local Whitley Committee |
| LWR | Light water reactor |
| LWRA | London Waste Regulation Authority |
| M & E | Mechanical and Electrical |
| MAC | Maximum Acceptable Concentration or Maximum Allowable Concentration |
| MACE | Multipurpose Automatic Control Equipment |
| MAFF * | Ministry of Agriculture, Fisheries and Food |
| MAFS | Management Arrangements Feasibility Study (in FOD) |
| MAG | Metal active gas |
| MAG | Metal arc gas |
| MAGNET | Minority Action Group Network |
| MAIB | Marine Accident Investigation Branch |
| MAK | Maximale Arbeitsplatzkonzentration(en) German |
| MAPP | Major Accident Prevention Policy |
| MAR | Management and Administration |
| MARCODE* | Database of Investigated Accidents (originally Marches Code) |
| MAS | (Civil Service) Medical Advisory Service, now Occupational Health and Safety Agency Ltd. |
| MaTSU | Marine Technology Support Unit |
| MAUK | Mining Association of the UK |
| MAWP | Maximum Allowable Working Pressure |
| MB | Management Board |
| MbO | Management by Objective(s) |
| MbOCA | 4,4’Methylene-bis-(2-chloroaniline) |
| MCA | Maritime and Coastguard Agency |
| MCB | Manually controlled barrier (crossings) |
| MCCS | Microclimate cooling system |
| MCG | Major Contractors Group |
| MCI | Management Charter Initiative |
| MCS | Microclimate cooling system |
| MCS | Mining Certification Service (See HSE (M)) |
| MDHS | Methods for the Determination of Hazardous Substances |
| MDI | Diphenylmethane diisocyanate |
| MDI | Methyl diphenylene diisocyanate |
| MDTSA | Methods for the Detection of Toxic Substances in Air |
| ME | Myalgic encephalomyelitis |
| MECS * | Mining Equipment Certification Service (part of BASEEFA) |
| MEK | Methyl ethyl ketone |
| MEL * | Maximum Exposure Limit |
| MEPC | Marine Environment Protection Committee |
| MESG | Maximum experimental safe gap |
| MeV | Million electron volts or mega electron volts |
| MEWP | Mobile elevating work platform |
| MFCI | Molten Fuel Coolant Interaction |
| MH | Major hazards |
| MHAU * | Major Hazards Assessment Unit |
| MHIDAS | Major Hazards Incident Data Service. Database available on OSHROM |
| MHLWP | Major Hazards Legislation Working Party |
| MHSP | Major hazards strategic programme |
| MHSWR | Management of Health and Safety at Work Regulations |
| (HM) MI | Mines Inspectorate |
| MI | Mandatory Investigation |
| MI | Myocardial infarction |
| MIC | Methyl isocyanate |
| MIC | Minimum ignition current |
| MIC | Mining Industry Committee |
| MIDAS | Machine information display and automation system |
| MIE | Minimum ignition energy |
| MIG | Metal inert gas |
| MIGE | Missile impact and gaseous explosions |
| MIIB | Major incident investigation board |
| MINOS | Mine Operating System |
| MIPG | Major incident progess group |
| MIPS | Median Index of Public Sector Tender Prices |
| MIRWMS | Merseyside Ionising Radiation Warning and Monitoring System |
| MIS | Management Information Systems |
| MIS | Manufacturers, importers and suppliers |
| MISHAP | Model for the Estimation of Individual Societal Risk from the Hazards of Pipelines |
| MLH | Minimum List Heading (of the Standard Industrial Classification) |
| MMMA | Metalforming Machinery Makers’ Association |
| MMMF | Man-made mineral fibre |
| MMWR | Morbidity and Mortality Weekly Report (USA) |
| MND | Motorneuron(e) disease |
| MNE | Multinational enterprise |
| MOCA | 4,4′ Methylene-bis-(2-chloroaniline) |
| MOD | Ministry of Defence |
| MOD(AD) | Ministry of Defence (Army Dept) |
| MOD(AFD) | Ministry of Defence (Air Force Dept) |
| MOD(N) | Ministry of Defence (Naval Dept) |
| MOD(PE) | Ministry of Defence (Procurement Executive) |
| MOR | Mortality Odds Ratio |
| MOTO | Memorandum of Terms of Occupancy |
| MoU | Memorandum of Understanding |
| MPC | Maximum Permissible Concentrations |
| MPC | Monetary Policy Committee |
| MPE | Maximum Permissible Exposure |
| MPO | Management and Personnel Office |
| MQ * | Mines and Quarries |
| MQB * | Mining Qualifications Board |
| (HM) MQI * | (HM) Mines and Quarries Inspectorate now Mines Inspectorate |
| MR | Mandatory Reporting |
| MRA | Mutual Recognition Agreement |
| MRDE | Mining Research and Development Establishment (now Coal Research Establishment) |
| MREC | Multicentre Research Ethics Committee |
| MRL | Maximum Residue Limit |
| MS | Manuscript |
| MS | Mass spectrometry |
| MS | Member State (of European Union) |
| MSC | Maritime Safety Commission |
| MSD | Musculoskeletal disorder |
| MSDS | Material Safety Data Sheet(s) |
| MSER | Manufacture and Storage of Explosives Regulations |
| MSF | Manufacturing Science Finance Union |
| MSHC | Mines Safety and Health Commission (sometimes used instead of SHCMOEI) |
| MSIV | Main steam isolating valve |
| MSLB | Main steam line break |
| MT | Management Trainee |
| MTD | Marine Technology Directorate |
| MTIRA | Machine Tool Industry Research Association (now AMTRI) |
| MU | Multiple Unit (train) |
| MVA | Market value added |
| MVBR | Motor vehicle body repair |
| MVR | Motor vehicle repair |
| MW | Microwave |
| MWF | Metalworking fluid(s) |
| MWL | Miniature warning light |
| MZ | Middle zone |
| NAAFI | Navy, Army, Air Force Institute |
| NAC | National Agricultural Centre |
| NACB | National Accreditation of Certification Bodies |
| NADOR | Notification of Accidents and Dangerous Occurrences Regulations |
| NAFE | Non-advanced further education |
| NAFLIC | National Association for Leisure Industry Certification |
| NAIR | National Arrangements for Incidents involving Radioactivity |
| NAM | National Account Managers |
| NAO | National Audit Office |
| NAPP * | Non-Agricultural Pesticides Panel |
| NAPS | Nationwide Association of Preserving Specialists |
| NARM | Naturally occurring and accelerator produced radioactive material |
| NASC | National Association of Scaffolding Contractors |
| NATLAS | National Testing Laboratory Accreditation Scheme |
| NATM | New Austrian Tunnelling Method |
| NAWDC | National Association of Waste Disposal Contractors |
| NCB | National Coal Board, now British Coal Corporation |
| NCEC | National Chemical Emergency Centre |
| NCF | National Contractors Federation |
| NCIS | National Criminal Intelligence Service |
| NCSIIB | National Certification Scheme for Inservice Inspection Bodies |
| NCVQ | National Council for Vocational Qualifications |
| NDLB | National Dock Labour Board |
| NDPB | Non Departmental Public Body |
| NDT | Non-destructive testing |
| NE | Nuclear Electric |
| NEA | Nuclear Energy Agency (OECD) |
| NEB | Nuclear Energy Board of Ireland, Dublin |
| NEBOSH | National Examination Board in Occupational Safety and Health |
| NEBR | Nuclear Emergency Briefing Room |
| NEBROSH | National Examination Board in Risk, Occupational Safety and Health |
| NEC | National Executive Committee |
| NEC | Net Explosives Content |
| NEC | Network Emergency Co-ordinator |
| NEDB | National Exposure Data Base |
| NEMKO | Norges Elektriske Materiellkontroll (Norway) |
| NEPLG | Nuclear Emergency Planning Liaison Group |
| NESC | Network for Evaluating Steel Components |
| NES | Not Elsewhere Specified |
| NFB | National Federation of Builders |
| NFCI | National Federation of Clay Industries |
| NFDC | National Federation of Demolition Contractors |
| NFRC | National Federation of Roofing Contractors |
| NGL | Natural gas liquid(s) |
| NGO | Non-Governmental Organisation |
| NHBC | National House Building Council |
| NI | Nominated Inspector |
| NI | Northern Ireland |
| NIAOA | National Insurance Agency Against Occupational Accidents (Italy) |
| NICE | National Institute for Clinical Excellence |
| NIDA | National Institute on Drug Abuse (USA) |
| NIEHS | National Institute of Environmental Health Sciences |
| NIG * | National Interest Group |
| NIGM * | National Interest Group Minute |
| NIH | National Institutes of Health (USA) |
| NIHHS | Notification of Installations Handling Hazardous Substances Regulations |
| NIHL | Noise induced hearing loss |
| (HM) NII * | (HM) Nuclear Installations Inspectorate (operational arm of the Nuclear Safety Directorate, Health and Safety Executive) |
| NIMEXE | Harmonised nomenclature for foreign trade statistics of the EEC |
| NIOSH | National Institute for Occupational Safety and Health (USA) |
| NIOSHTIC | National Institute for Occupational Safety and Health database, available on OSHROM |
| NIR | Non-ionising radiation |
| NIR | Northern Ireland Railway |
| NIREX | Nuclear Industry Radioactive Waste Executive |
| NIST | National Institute of Standards and Technology (USA) |
| NJUG | National Joint Utilities Group |
| NMR | Nuclear magnetic resonance |
| NNC | National Nuclear Corporation |
| NNI | Nederlands Normalisatie Instituut (Netherlands) |
| NOAEL | No Observed Adverse Effect Level |
| NOES | National Occupational Exposure Survey (U.S.A.) |
| NONS | Notification of New Substances Regulations |
| NPF | Nominal protection factor |
| NPTC | National Proficiency Tests Council |
| NRA | National Rivers Authority |
| NRC | Nuclear Regulatory Commission (USA) |
| NRG * | National Responsibility Group now National Interest Group |
| NRPB | National Radiological Protection Board |
| NRT | National Responsibility Team |
| NSCC | National Specialist Contractors Council |
| NSD * | Nuclear Safety Directorate, Health and Safety Executive |
| NSF | Norges Standardiseringsforbund (Norway) |
| NSRMU | Nuclear Safety Research Management Unit |
| NSRSG | Nuclear Safety Research Steering Group |
| NSSF | National Standardisation Strategic Framework |
| NSSS | Nuclear steam supply system |
| NTI | New Training Initiative |
| NTIS | National Technical Information Service (USA) |
| NTP | Normal temperature and pressure |
| NTP | National Toxicology Program (USA) |
| NTSB | National Transportation Safety Board (USA) |
| NUI | Normally Unattended Installation |
| NUREG | US Nuclear Regulatory Commission publication |
| NUSAC | Nuclear Safety Advisory Committee |
| NVLAP | National Voluntary Laboratory Accreditation Program (US) |
| NVQ | National Vocational Qualification |
| OAC | Operational analysis and control model |
| OB * | Operations Branch. OSD |
| Obs | Obsolete/Obsolescent |
| OBST | Operational Business Systems Team |
| OC | Open crossing |
| OC * | Operational Circular |
| OCB | Offshore Certification Bureau |
| OCD | Occupational cerviobrachial disorder |
| OCMI | Organisation cultural maturity index |
| OCR | Opportunity Cost Rent |
| OCR 1322 Scheme | Management of health and safety and welfare for small and medium sized businesses in the construction industry |
| OCT | Overseas Countries and Territories |
| OD | Organisation(al) Development |
| ODA | Olympic Delivery Authority |
| OECD-IGUS | Organisation for Economic Cooperation and Development – International Group of Experts on the Explosion Risks of Unstable Substances |
| OEL | Occupational exposure limit |
| OES * | Occupational exposure standard |
| OfGAS | Office of Gas Supply |
| OFGEM | Office of Gas and Electricity Markets |
| OFTEL | Office of Telecommunications |
| OFWAT | Office of Water Services |
| OG | Operations Group |
| OGC | Office of Government Commerce |
| OGD | Other Government Departments |
| OGU | Open Government Unit |
| OH | Occupational health |
| OHAC * | Occupational Health Advisory Committee |
| OHASP | Occupational Health and Safety Practitioner |
| OHEU * | Occupational Health and Environment Unit |
| OHP | Overhead projector |
| OHS | (Civil Service) Occupational Health Service |
| OHSLB | Occupational Health and Safety Lead Body |
| OIAC * | Oil Industry Advisory Committee |
| OIE | Office International des Epizooties |
| OILM | International Organization of Legal Metrology |
| OIML | International Organization of Legal Metrology |
| OIM | Offshore Installations Manager |
| OITAF | International Organization for Transportation by Rope |
| OJ | Official Journal (of the European Communities) |
| OJEC | Official Journal of the European Communities |
| OLC | Occupation level crossing |
| OLC | Open level crossing |
| OLE | Object linking and embedding |
| OM | Operations Manager |
| OM * | Operational Minute |
| OMCS | Office of the Minister for the Civil Service |
| OME | Ontario Ministry of Environment |
| OMF * | Operations Managers Forum |
| OMHL * | Occupational Medicine and Hygiene Laboratory |
| OMT | Operations management team |
| OOPEC | Office for Official Publications of the European Communities |
| OP | Occasional Paper |
| OP | Organophosphate/Organophosphorus |
| OPA * | Output and Performance Analysis |
| OPIP | Operational Process Improvement Project |
| OPM | Output and Performance Measures |
| OPO | One Person Operated |
| OPSD | Operational Support and Policy Division |
| OPSS | Office of Public Service and Science |
| ORR | Office of the Rail Regulator |
| OSC | Off-Site Centre |
| OSC | Operational Safety Case |
| OSD * | Offshore Safety Division |
| OSHA | Occupational Safety and Health Administration (USA) |
| OSHCD | Occupational Safety and Health Compact Disc |
| OSHIG | Occupational Safety and Health Information Group |
| OSHLB | Occupational Safety and Health Lead Body |
| OSHRC | Occupational Safety and Health Review Commission (USA) |
| OSHROM | Occupational Safety and Health (Compact Disc) Read Only Memory. Contains NIOSHTIC, CISDOC, HSELINE, MHIDAS databases |
| OSIRIS | Optical scattering instantaneous respirable dust indication system |
| OSRP Act | Offices Shops and Railway Premises Act 1963 |
| OSRPA | Offices Shops and Railway Premises Act |
| OST | Office of Science and Technology |
| OSU PIGI | Operational Support Unit’s Procedures, Instructions, Guidance, Information |
| OSZHD | Organisation for the Collaboration of Railways (E. Europe) |
| OTAR | Overseas Tariffs and Regulations |
| OTSB | Offshore Safety and Technology Board |
| OTSU | Open Tech Support Unit |
| OU | Operations Unit |
| OVC | Occupational Violent Crime |
| OZ | Outer Zone |
| P & I | Piping and Instrumentation (diagram) |
| P & T | Professional and Technology Category |
| Pa | Pascal (S.I. unit of pressure) |
| PA | Planning authority |
| PA | Put away (on registered files) |
| PABIAC * | Paper and Board Industry Advisory Committee |
| PACA | Preventing Accidents to Children in Agriculture |
| PADHI | Planning Advice for Developments near Hazardous Installations |
| PAG * | Programme Action Group (of Securing Health Together) |
| PAH | Polycyclic aromatic hydrocarbon |
| PAIT | Post-Acceptance Inspection Topic |
| PANs | Personnel Advice Notes |
| PASC | Pacific Area Standards Congress |
| PAT | Proficiency Analytical Testing |
| PATRAM | Packaging and Transport of Radioactive Materials |
| PBB | Polybrominated biphenyl |
| PBN | Permanent Background Notices |
| PBZ | Personal breathing zone |
| PC | Personal computer |
| P(C)A | Petroleum (Consolidation) Act 1928 |
| PCA | Public Contractors Association |
| PCAH | Polycyclic aromatic hydrocarbon |
| PCAW | Public Concern at Work |
| PCB | Polychlorinated biphenyl |
| PCBP’s | Polychlorinated biphenylenes |
| PCIAOH | Permanent Commission and International Association on Occupational Health |
| PCM | Phase contrast microscopy |
| PCM | Plutonium contaminated material |
| PCS | Public and Commercial Services Union |
| PCSPS | Principal Civil Service Pension Scheme |
| PCSR | Pre-construction safety report |
| Pct | Polychlorinated Triphenyls |
| PD | Promotion dossier |
| PDO | Personal Development Objectives |
| PDS | Professional Development Scheme |
| PE | Photo-electric |
| PEC | Packaging of Explosives for Carriage Regulations |
| PEFD * | Planning Efficiency and Finance Division |
| PEGS | Pesticide Exposure Group of Sufferers |
| PEL | Permissible Exposure Limit (U.S. Dept. of Labour) |
| PER | Professional and Executive Recruitment |
| PERU | Pay and Employee Relations Unit |
| PES | Programmable electronic systems |
| PES | Public expenditure survey |
| PF | Personal file |
| PF | Procurator Fiscal |
| PFA | Pulverised fuel ash |
| PFD | Primary flash distillate |
| PFEER | Prevention of Fire Explosion and Emergency Response Regulations |
| PFP | Process fire precautions |
| PGI | Protected geographical indication |
| PGR | Road Transport (Carriage of Dangerous Goods in Packages etc) Regulations |
| PH | Property holdings |
| PH | Public Health |
| PHELA | Pesticides HSE/LA Enforcement Liaison Committee |
| PHO | Public Health Officer |
| PHIPCO | Public Health and Industrial Pesticides Council |
| PHSA | Planning (Hazardous Substances) Act 1990 |
| PI * | Principal Inspector |
| PIA | Professional Investment Authority |
| PIAC * | Printing Industry Advisory Committee |
| PIACT | International Programme for the Improvement of Working Conditions and Environment (ILO) |
| PIAP | Pesticides Incidents Appraisal Panel |
| PICOP | Person in Charge of Possession (trains) |
| PICOW | Person in Charge of Works (Railways) |
| PID | Project iInitiation document |
| PIHS | Preliminary industrial hygiene survey |
| PII | Professional indemnity insurance |
| PILON | Payments in lieu of notice |
| PIN | Publication Information Notice |
| PIO | Principal Inspecting Officers (of Railways) |
| PIPI | Pipelines Inspectorate |
| PIRER | Public Information for Radiation Emergencies Regulations |
| PISC | Programme for the Inspection of Steel Components |
| PIZ | Public Information Zone |
| PLACO | Planning Committee (ISO) |
| PLC | Public Level Crossing |
| PLC | Programmable logic circuits |
| PLC | Programmable logic controller |
| PLTB | Programmed learning text book |
| PM | Permanent Manuals |
| PMA | Paintmakers Association (of Great Britain) |
| PMDA | Plastics Machinery Distributors’ Association |
| PMF | Progressive massive fibrosis |
| PMR | Proportional mortality ratios |
| PMS | Paint mixing system(s) |
| PN | Prohibition notice |
| PO | Private Office |
| POCO | Post Operational Cleanout (Nuclear) |
| POHL | Principal Officer Health Liaison |
| POMSTER | Placing on the Market and Supervision of Transfers of Explosives Regulations |
| POOSH | Professional Organisations in Occupational Health and Safety |
| POPMAR | Policy, organising, planning and implementing, measuring, auditing and reviewing |
| POPUMET | Protection of Persons undergoing Medical Examinations or Treatment |
| PORV | Power-operated relief valve |
| POSH | Policies for Strategy on Health |
| POSR | Pre-operation Safety Review |
| PoW | Plan of Work |
| PP Regs | Power Presses Regulations |
| PPE | Personal protective equipment |
| PPEB | Policy Projects and Environment Branch, part of Policy Unit |
| PPHSLC | Plastics Processing Health and Safety Liaison Committee |
| ppm | Parts per million |
| PPM | Process and production method |
| PPMA | Petrol Pump Manufacturers Association |
| PPTO | Principal Professional and Technology Officer |
| PQ | Parliamentary Question |
| PR & D | Public Research and Development |
| PRA | Paint Research Association |
| PRA | Probabilistic risk analysis |
| PRA | Probabilistic risk assessment |
| PRAM | Pipeline risk assessment method |
| prEN | project EN |
| PRI | Plastics and Rubber Institute |
| PRINCE | Projects Via Controlled Environment |
| PRISM | Personnel Record Information Systems for Management |
| PRS * | Pesticides Registration Section |
| PRS | Property Repayment Scheme |
| PRU | Pay Research Unit |
| PRV | Pressure relief valve |
| PS | Personal Secretary |
| PSA | Probabilistic safety analysis |
| PSA | Public Service Agreements |
| PSAR | Preliminary safety analsysis report |
| PSB | Professional Staffs Branch |
| PSC | Port State Control |
| PSDU * | Personnel Services Delivery Unit |
| PSGB | Pharmaceutical Society of Great Britain |
| Psaf | Particle size distribution function |
| psi | Pounds per square inch |
| PSI | Principal Specialist Inspector |
| PSO | Principal Scientific Officer |
| PSO | Professional Standards Office |
| PSR | Pipelines Safety Regulations |
| PSPS | Pesticides Safety Precautions Scheme |
| PSSR | Pressure Systems Safety Regulations |
| PST | Professional, Scientific and Technical |
| PSV | Planned Special Visit |
| PTB | Physikalisch Technische Bundesanstalt |
| PTF | Petroleum Training Federation |
| PTFE | Polytetrafluoroethylene |
| PTO | Professional and Technology Officer |
| PTOM | Pays et territoires d’outre-mer |
| PTW | Permit to work |
| PU * | Planning Unit, part of Resources and Planning Directorate |
| PU | Policy Unit |
| PU | Polyurethane |
| PU | Public utility |
| PUF | Polyurethane foam |
| PURPOSES | Purchase Management System |
| PUSU * | Policy Unit Support unit |
| PUWER | Provision and Use of Work Equipment Regulations |
| PVC | Polyvinyl chloride |
| PWP | Personal Work Plan |
| PWR | Pressurised water reactor |
| PWTAG | Pool Water Treatment Advisory Group |
| QA | Quality assurance |
| QAC | Quality Assurance Committee |
| QBD | Queen’s Bench Division |
| QC | Quality control |
| QMS | Quality management systems |
| QNFT | Quantitative fit testing |
| QNIG | Quarries National Interest Group |
| QPB | Quarterly Programme Board |
| QRA | Quantified risk assessment |
| QRG | Quarterly Return Group |
| QSEs | Qualified scientists and engineers |
| qv | quod vide (which see) |
| R | Risk phrases (i.e. R40, R42) as defined by the Approved List of the CHIP Regulations |
| R2P2 | Reducing Risks Protecting People |
| R & D | Research and Development |
| RAB | Resource Accounting and Budgeting |
| RAC | Recombinant DNA Advisory Committee (USA) |
| RALG | Risk Assessment Liaison Group |
| RALUCO | Radioactive luminous compound |
| RAMG | Regulatory Assistance Management Group |
| RAMRail | The Packaging, Labelling and Carriage of Radioactive Material by Rail Regulations 1996 |
| RAMRoad | The Radioactive Material (Road Transport) (Great Britain) Regulations 1996 |
| RAPU * | Risk Assessment Policy Unit |
| RAS | Recruitment and Assessment Services (Civil Service) |
| RAS | Remote access service |
| RASH | Rapid screening of hazard |
| RASP * | Replacement Accounting System Project (New Accounting Computer System) |
| RATs | Remote access terminals |
| RAWS | Regional Administrative Works Study |
| RCD | Residual current device |
| RCEP | Royal Commission on Environmental Pollution |
| RCH | Railway Clearing House |
| RCO | Regulatory compliance officer |
| RCP | Reactor coolant pump |
| RCS | Reactor coolant system |
| RCS | Royal Society of Chemistry |
| RD | Regional Director |
| RDMA | Regulatory decision making audit |
| RDP | Registered disabled person |
| REACH | Registration Evaluation and Authorisation of Chemicals |
| REAT | Real ear attenuation at threshold |
| REC | Research Ethics Committee |
| REGS | Regulations |
| REHIS | Royal Environmental Health Institute of Scotland |
| REL | Recommended exposure limit |
| REM | Roentgen Equivalent-Man |
| REM | Rapid eye movement |
| REMA | Regional Employment Medical Adviser |
| REMCO | Committee on Reference Materials (ISO) |
| REPAC | Regional Protection Advisory Committee |
| REPPIR | Radiation (Emergency) Preparedness and Public Information) Regulations |
| RESHORB | Racial Equality, Health and Safety and Overseas Recruitment Branch (in ED) now Health and Safety Policy Liaison |
| RF | Radio frequency |
| RFAC | Regional Fisheries Advisory Committee |
| RFD | Rail freight distribution |
| RFDC | Regional Flood Defence Committee |
| RFMS | Radio frequency magnetron sputtering |
| RHRS | Residual heat removal system |
| RHS * | Revitalising Health and Safety |
| RI * | Railway Inspectorate |
| RIA | Regulatory Impact Assessment |
| RIAC * | Railway Industry Advisory Committee |
| RIAS | Royal Incorporation of Architects in Scotland |
| RIBA | Royal Institute of British Architects |
| RICE | Regular interlaboratory counting exchange |
| RICS | Royal Institute of Chartered Surveyors |
| RID | Reglements Internationales Relatif au Transport des Marchandises Dangereuses par Chemin de Fer |
| RIDDOR | Reporting of Injuries, Diseases and Dangerous Occurrences Regulations |
| RIIS | Research Institute of Industrial Safety (Japan) |
| RIMNET | Radioactive Incident Monitoring Network |
| RIP | Regulation of Investigatory Powers Act |
| RIPA | Royal Institute of Public Administration |
| RIS | Resource Information System |
| RISKAT | Risk Assessment Tool |
| RLO | Research Liaison Officer |
| RLSD * | Research and Laboratory Services Division [see HSL] |
| RMTD | Radioactive Materials Transport Division of the Department of Transport |
| RNA | Ribonucleic acid |
| RNE | Reseau National D’Essais. (France) |
| RNES | Royal Naval Engineering Service |
| RNIP | Regulatory Nuclear Interface Protocol |
| RNSS | Royal Naval Scientific Service |
| RO | Regional Office |
| ROAMEF | Rationale, Objectives, Appraisal, Monitoring, Evaluation and Feedback |
| ROGWU | Russian Oil, Gas and Construction Workers Union |
| ROIT | Regional Office of Industrial Tribunals |
| ROPS | Roll-over protection system |
| RoR | Review of Regulation |
| RoRo | Roll-on Roll-off vehicle ferry |
| RoSPA | Royal Society for the Prevention of Accidents |
| ROSV | Remote operated solenoid valve |
| RPA | Radiation Protection Adviser |
| RPD * | Resources and Planning Directorate |
| RPD (FAS) * | Resources and Planning Division (Financial and Accounting Section) |
| RPE | Respiratory protective equipment |
| RPS | Reactor protection system |
| RPS * | Research Planning Section (of HSL) |
| RPSGB | Royal Pharmaceutical Society of Great Britain |
| RPV | Reactor pressure vessel |
| RSA60 | Radioactive Substances Act 1960 |
| RSC | Royal Society of Chemistry |
| RSH | Royal Society for the Promotion of Health |
| RSI | Repetitive strain injury |
| RSLs | Registered Social Landlords |
| RSM * | Regional Support Manager |
| RSPA | Research and Special Programs Administration (USA) |
| RSP | Relevant statutory provision |
| RSP | Registered safety practitioner |
| RSSG | Royal Society Study Group |
| RSU * | Research Strategy Unit |
| RTA | Road traffic accident |
| RTD | Research Technology and Development Projects |
| RTR | Road Traffic (Carriage of Dangerous Substances in Road Tankers and Tank Containers) Regulations |
| RUBIAC * | Rubber Industry Advisory Committee |
| RUBSSO | Rossendale Union of Boot, Shoe and Slipper Operatives |
| RWA | Regional Water Authority |
| RWMAC | Radioactive Waste Management Advisory Committee |
| S | Section |
| S & C | Switches and crossings |
| S & T | Signal and telecommunications |
| S and LP | Safety and loss prevention |
| SABE | Strategic Advisory Body on Environment |
| SAC | Subject Advisory Committee |
| SACA | Systemic accident cause analysis |
| SAI | Safety appliance illustration |
| SAM | Senior Admin Manager |
| SAP | Safety assessment principles |
| SAP | Safety assurance principles |
| SAP | Social Action Programme |
| SARA | Superfund Amendments and Reauthorization Act (U.S.A.) |
| SASD | Strategy and Analytical Support Directorate |
| SBS | Sick building syndrome |
| SBTAF | Small Business Trade Association Forum |
| SC | Safety case |
| SC | Skillcentre |
| SCANS * | Selective Current Awareness Newsheets produced by HSE Information Services on a variety of topics |
| SCASUG | Safety Case Assessment System Users Group |
| SCBA | Self contained breathing apparatus |
| SCC | Safety Case Co-ordinator |
| SCC * | Situations Co-ordination Centre |
| SCC | Standards Council of Canada |
| SCDO | Safety Case Distribution Officer |
| SCE | Safety critical element |
| SCE | Sister chromatid exchanges |
| SCHAM | Safety Case Handling and Assessment Manual |
| SCHELA | Standards of Compliance sub-committee of HELA |
| SChIF * | Senior Chemical Inspector of Factories |
| SCISAS | Size classifying isokinetic sequential aerosol sampler |
| SCLE | Scottish Construction Licensing Executive |
| SCMST | Safety Case Management Support Team |
| SCOPE | Scientific Committee on Problems of the Environment (ICSU) |
| SCOS | Scottish Chamber of Safety |
| SCOSS | Standing Committee on Structural Safety |
| SCR | Safety Case Regulations |
| SCS | Safety Case (IT) Systems |
| SCS | Society of Civil Servants |
| SCSR | Self-contained self-rescuer (Mining) |
| SCU | Survey Control Unit (of the Central Statistical Office) |
| SDA | Service Delivery Agreement |
| SDD | Scottish Development Department |
| SDI * | Selective dissemination of information |
| SDIA | Soap and Detergent Industries Association |
| SDR | Special Drawing Rights |
| SEC | Securities and Exchange Commission |
| SECG | Specialist Engineering Contractors Group |
| SEI | Safety Environment Institute (U.S.A.) |
| SEL * | Safety Engineering Laboratory, now part of HSL |
| SELECT | Electrical Contractors Association of Scotland |
| SELV | Safety extra low voltage |
| SEM | Scanning electron microscopy |
| SEMA * | Senior Employment Medical Adviser |
| SEMKO | Svenska Electriska Materielkontrollanstalten (Sweden) |
| SENA * | Senior Employment Nursing Adviser |
| SEO | Senior Executive Officer |
| SEO | Special Exemption Order |
| SEPA | Scottish Environmental Protection Agency |
| SEPD | Scottish Economic Planning Department |
| SERDS | Single ended ranging drum shearer |
| SES * | Safety and Enforcement Statistics |
| SET | Science Engineering and Technology |
| SEV | Schweizerischen Elektrotechnischen Vereins (Switzerland) |
| SF | Subject File |
| SFA | Securities and Futures Authority |
| SFAIRP | So far as is reasonably practicable |
| SFS | Finnish Standards Association |
| SFS | Suomen Standardsoimisliitto (Finland) |
| SG | Specialist Group |
| SGD * | Strategy and General Division now Policy Unit |
| SGGB | Showmen’s Guild of Great Britain |
| SGHWR | Steam generating heavy water reactor |
| SGMSEC | Scientific Group on methodologies for the safety evaluation of chemicals (WHO/ICSU) |
| SH2 * | Securing Health Together |
| SHAD | Safety Health and Awareness Day |
| SHCMOEI | Safety and Health Commission for the Mining and Other Extractive Industries |
| SHEG | Scottish Health Education Group |
| SHELA | Statistics sub-committee of HELA |
| SHIELD * | Safety and Health Information – Establishment Linked Data |
| SI * | Specialist inspector |
| SI | Statutory Instrument |
| SI | Systeme Internationale |
| SIB | Safety Information Bulletin (DH) |
| SIB | Securities and Investment Board (succeeded by FSA) |
| SIC | Standard Industrial Classification |
| SIC | Statement of Internal Control |
| SID | Specialised Industries Division |
| SIESO | Society of Industrial Emergency Services Officers |
| SIL | Safety integrity level |
| SIMVIDOSE | Simultaneous Video Dose |
| SIN | Substance Identification Number |
| SIP | Site Inspection Programme |
| SIPI | Scottish Industrial Pollution Inspectorate (see also HMIPIS) |
| SIR * | Specialist Inspection Report |
| SIRP | Society of Independent Roundabout Proprietors |
| SIS | Standarisering Kommissionen i Sverige (Sweden) |
| SIT | Spontaneous ignition temperature |
| SITC | Standard International Trade Classification |
| SITC(R) | Standard international trade classification (revised) |
| SIT(R2) | Standard international trade classification (2nd revision) |
| SITTS | Small Inventory Top Tier Site(s) |
| SIU * | Strategy and Information Unit |
| SLA | Service level agreement |
| SLIC | Senior Labour Inspectors Committee |
| SLIM | Simpler Legislation for Internal Markets |
| SLM | Short Life Memorandum |
| SLOD | Significant likelihood of death |
| SLOT | Specified level of toxicity |
| SM * | Sector Manager |
| SMART | Specific, measurable, achievable, realistic and timebound |
| SMDP | Senior Management Development Programme |
| SME | Small and medium-sized enterprises |
| SMIL | Statistics and market intelligence library (DTI) |
| SMP * | Safety Management Prospectus |
| SMR * | Senior Management Review |
| SMR | Standardised morbidity ratio |
| SMR | Standardised mortality ratio |
| SMR | Stress MSD and Return 2 Work |
| SMRAB * | Safety in Mines Research Advisory Board |
| SMRE * | Safety in Mines Research Establishment |
| SMS | Safety Management System |
| SMSR | Supply of Machinery (Safety) Regulations |
| SMSU * | Senior Management Support Unit |
| SNHL | Sensory neural hearing loss |
| SNUPPS | Standardised nuclear unit power plant system |
| SNV | Association Suisse de Normalisation (Switzerland) |
| SO | Scientific Officer |
| SO * | Solicitor’s Office |
| SOC | Standing Orders Committee |
| SOEC | Statistical Office of the European Communities |
| SOER | Scottish Office Emergency Room |
| SOFA | Statement of Financial Activities (needed by Charities) |
| SOFHT | Society of Food Hygiene Technology |
| SOL * | Solicitor’s Office |
| SOLAS | Safety of Life at Sea |
| SOPs | Standard Operating Procedures |
| SORP | Statement of Recommended Practice |
| SOUP | Software of uncertain pedigree |
| SPAD * | Signal passed at danger |
| SPAID | Society for the Prevention of Asbestosis and Industrial Diseases |
| SPATS | Senior Professional Administrative Training Scheme |
| SPC | Semi-Permanent Circulars |
| SPD * | Safety Policy Directorate |
| SPF | Science Policy Foundation |
| SPGU * | Strategy Policy and Guidance Unit |
| SQL | Structured query language |
| SRA | Strategic Rail Authority |
| SRD | Safety and Reliability Directorate (AEA Technology) |
| SRO | Statutory Regulation Order |
| SRSC | Safety Representatives and Safety Committees |
| SRI | Safety Related Instrumentation |
| SRP | Society for Radiological Protection |
| ss. | Sections |
| SS | Staff Side |
| SSAP | Statement of Standard Accounting Practice |
| SSB * | Statistical Services Branch now Operations Unit |
| SSC | Scientific sub-committee (of ACP) |
| SSE | Safe Shutdown Earthquake |
| SSERC | Scottish Schools Science Equipment Research Centre |
| SSG | Scientific Staffs Group |
| SSI | Solid state interlocking |
| SSI * | Superintending Specialist Inspector |
| SSMSU | Strategy and Senior Management Services Unit |
| SSO | Senior Scientific Officer |
| STA | Skills Training Agency (Employment Department) |
| STABEX | Export earnings stabilisation scheme |
| STACO | Standing Committee for the Study of Principles of Standardization (ISO) |
| STAJ | Science and Technology Agency (Japan) |
| STATAS | Structured Audit Techniques for Assessment of Safety Management |
| STC | Scientific and Technical Committee (EC) |
| STEL | Short term exposure limit |
| STEP | Science and Technology for Employment Protection |
| StEP | Strategic enabling programmes |
| STP | Scientific and Technological Programme (EC) |
| STRC | Scientific and Technical Research Committee (EC) |
| STS | Soft tissue sarcoma |
| SVHC | Substances of very high concern |
| SWEF | Swedish Work Environment Fund (Sweden) |
| SWIFT | Structured What-If Technique |
| SWL | Safe working load |
| SWO | Staff Welfare Officer |
| SWORD | Surveillance of Work Related and Occupational Respiratory Disease |
| SWP | Safe working pressure |
| SYSPU | Systems Planning and Strategy Unit, part of Railway Inspectorate |
| t | tonne(s) |
| T | Toxic |
| TA | Training Agency |
| TA | Technical Adviser |
| TA | Topic Assessor |
| TACADE | Teachers Advisory Committee on Alcohol and Drug Education |
| TAG | Technical Advisory Group |
| TAM | Topic Assessment Manager |
| TAR | Topic Assessment Record |
| TBT Agreement | Agreement on Technical Barriers to Trade |
| TC | Tar Creosote |
| TC | Track Circuit |
| TCDD | Tetrachlorodibenzodioxin |
| TCLo | Toxic Concentration Low |
| TCPA | Town and Country Planning Act 1971 |
| TCPSA | Town and Country Planning (Scotland) Act 1972 |
| TCSU | Technical Computing Services Unit |
| TDGSA | Transport of Dangerous Goods (Safety Advisers) Regulations |
| TDI | Toluene diisocyanate |
| TDLo | Toxic dose low |
| TDN | Technical Data Note now replaced by HSE Guidance Notes |
| TDU | Toxic dose unit |
| TEAM * | Technically evaluated advisory materials |
| TEAP | Transportation Emergency Assistance Plan (Canada) |
| TEC | Training and Enterprise Council (Training Agency) |
| TELARC | Testing Laboratory Registration Council of New Zealand |
| TEM | Transmission electron microscopy |
| TEXIAC * | Textiles Industry Advisory Committee |
| TFPI | Tripartite Forum on Health and Safety in the Pharmaceutical Industry |
| TGA | Thermogravimetric analysis |
| TGIC | Triglycidyl Isocyanurate |
| THELA | Training sub-committee of HELA |
| TGWU | Transport and General Workers Union |
| THORP | Thermal oxide reprocessing plant |
| THSD * | Technology and Health Services Division, now Directorate of Science and Technology |
| TIG | Tungsten Inert Gas |
| TIL * | Technical Information Leaflet |
| TIR | Transport International Routier |
| TLI * | Training Liaison Inspector |
| TLO * | Training Liaison Officer |
| TLV | Threshold limit value |
| TM | Testing memorandum |
| TM * | Training Manager |
| TM * | Typing Manager |
| TMA | Trimellitic Anhydride |
| TML | Trans Manche Link |
| TMSG * | Technical, Medical and Science Group |
| TNO | Organisatie voor Toegepast-Natuurwetenschappelijk Onderzoek |
| TNPG | The Nuclear Power Group |
| TOC | Train Operating Company |
| TOFD | Time-of-Flight-Diffraction (ultrasonic inspection) |
| TOPS | Total Operations Processing System – British Rail |
| TOR | Tolerability of Risk |
| TORCH | Transferring Ownership Responsibility and Commitment for Hazard Control |
| TP | Temporary Promotion |
| TPC | Technical Progress Committee (EC) |
| TPED | Transportable Pressure Equipment Directive |
| TPR | Transportable Pressure Receptacles |
| TQ | Total Quality |
| TRC | Technology Reports Centre |
| TRC | Textile Research Council |
| TRC | The Radiochemical Centre Ltd. |
| TRNS * | Technical rules, new series (issued by EECS) |
| TSB | Technical Staffs Branch |
| TSCA | Toxic Substances Control Act (USA) |
| TSI | Technical Specifications for Interoperability |
| TSWG | Track Safety Working Group |
| TTO | Telecommunications Technical Officers |
| TU * | Technology Unit. OSD |
| TU | Trade Union |
| TUC | Trades Union Congress |
| THORP | Thermal Oxide Reprocessing Plant |
| TUS | Trade Union Side |
| TUTB | European Trade Union Technical Bureau for Health and Safety (Belgium) |
| TVI | Tutored Video Instruction |
| TW | Thames Water |
| TWA | Time-Weighted Average |
| TWI | Training Within Industry |
| UA | Unit of Account |
| UBA | Umweltbundesamt (Germany) |
| UCATT | Union of Construction Allied Trade Technicians |
| UCO | Use Classes Order |
| UCSIP | Union des Chambres de l’Industrie du Petrole |
| UDC | Universal Decimal Classification |
| UDRP | Uniform Dispute Resolution Policy |
| UDS | Unscheduled DNA synthesis |
| UEL | Upper explosive limit |
| UEL | Upper exposure limit |
| UFL | Upper flammability limit |
| UHS | Ultimate heat sink |
| UILI | Union of International Independent Laboratories |
| UKAEA | United Kingdom Atomic Energy Authority |
| UKAS | United Kingdom Accreditation Service |
| UKCS | United Kingdom Continental Shelf |
| UKHIS | United Kingdom Hazard Information System |
| UKIBEC | United Kingdom Insurance Brokers’ European Committee |
| UKMIS | United Kingdom Permanent Representative to the United Nations |
| UKOOA | United Kingdom Offshore Operators Association |
| UKPIA | United Kingdom Petroleum Industry Association |
| UKREP | United Kingdom Permanent Representative to the EC |
| UL | Underwriters Laboratories (USA) |
| ULV | Ultra Low Volume |
| UNCETDG | United Nationals Committee of Experts on the Transport of Dangerous Goods |
| UNCLOS | United Nations Conference on the Law of the Sea |
| UNCSTD | United Nations Conference on Science and Technology for Development |
| UNECE | United Nations Economic Commission for Europe |
| UNEP | United Nations Environment Programme |
| UNI | Ente Nazionale Italiano di Unificazione (Italy) |
| UNICE | Union des Industries de la Communaute Europeenne |
| UNIDO | United Nations Industrial Development Organisation |
| UNIG | Utilities National Interest Group |
| UNM | Union de Normalisation de la Mecanique (France) |
| UNSCEAR | United Nations Scientific Committee on the Effects of Atomic Radiation |
| URENCO | Dutch/German/UK organisation for uranium enrichment |
| USA | Universities Safety Association |
| USAS | United States of America Standards Institute |
| USNRC | United States Nuclear Regulatory Commission |
| UTE | Union Technique de l’Electricite (France) |
| UV | Ultra Violet |
| UVCE | Unconfined vapour cloud explosion |
| UVV | Unfallverhutungsvorschrift (Germany) |
| UWC | User Worked Crossing |
| UWED | Use of Work Equipment Directive (EC) |
| V/A | Visual Aid |
| VCE | Vapour Cloud Explosion |
| VCM | Vinyl Chloride Monomer |
| VCW | Voluntary Cessation of Work |
| VDT | Visual Display Terminal |
| VDU | Visual Display Unit |
| VFM | Value for Money |
| VHF | Viral haemorrhagic Fever |
| VLCC | Very Large Crude Carrier |
| VMD | Veterinary Medicines Directorate |
| VNMS | Variable wall mining system |
| VOC | Volatile Organic Compounds |
| VPC | Veterinary Products Committee |
| VPN | Virtual private network |
| VSC | Voluntary Safety Cases |
| VWF | Vibration white finger |
| WA | Water Authority |
| WAG | Welsh Assembly Government |
| WASP * | Workplace Analysis Scheme for Proficiency |
| WATCH * | Working Group for the Assessment of Toxic Chemicals (ACTS) |
| WB | Wet bulb |
| WBGT | Wet bulb globe temperature |
| WBV | Whole body vibration |
| WCDP | Widows’, Children’s and Dependents’ Pension |
| WCL | World Confederation of Labour (Christian Democrat) |
| WCM | Weekly Circular Minute |
| WCO | Workplace Contact Officer |
| WE | Work Experience |
| WEC | Work of Engineering Construction |
| WEG | Working Exposure Guidelines |
| WG | Working group |
| WGIR | Working Group on Ionising Radiations |
| WHMIS | Workplace Hazardous Materials Information System |
| WHO | World Health Organization |
| WIAS | West Indies Associated States |
| WING | Work Injured Nurses Group |
| WINTECH | Welsh Innovation and Technology |
| WIPO | World Intellectual Property Organisation |
| WISH | Waste Industry Safety and Health (Forum) |
| WLM | Working Levels per Month |
| WMIA | Woodworking Machinery Importers’ Association |
| WML | Wireless markup language |
| WO | Welsh Office |
| WP | Word Process(-ing/-or) |
| WP | Working Party |
| WP.6 | UN/ECE Working Party on Harmonization and Standardization Policies |
| WP.29 | UN/ECE World Forum for Harmonization of Vehicle Regulations |
| WPA | White Paper Account |
| WRA | Waste Regulation Authority |
| WRRS | Work-Related Road Safety |
| WRULD | Work related upper limb disorders |
| WSA | Workers’ Safety Adviser |
| WSC * | Warhead Safety Committee |
| WSF | Wrong Side Failure (Railways) |
| WSL | Warren Spring Laboratory |
| WSO | World Safety Organisation (USA) |
| WTO | World Trade Organization |
| w/w | Weight for weight |
| WWM Regs | The Woodworking Machines Regulations |
| WWREA | Wire and Wire Rope Employers Association |
| WWT | Working Well Together |
| XBRL | Extensible Business Reporting Language |
| XI | Irritant |
| XML | Extensible markup language |
| Xn | Harmful |
| XPS | X-ray photoelectron spectroscopy |
| XRD | X-ray diffraction |
| XRF | X-ray fluorescence |
| YP | Young Person |
| YTS | Youth Training Scheme |
| abbrev | define |
|---|---|
| # | Pound OR Number |
| & | And |
| @ | At |
| AB | air brick |
| ABR | alternate bars reversed (reinforcement) |
| AC | alternating current or air conditioning |
| ACoP | approved code of practice |
| ACT | Acoustic Ceiling Tile |
| AD | Area Drain |
| AFF | Above Finished Floor |
| AIStructE | Associate of the Institution of Structural Engineers |
| ALT | alternate, alternately (reinforcement) |
| ALUM | Aluminum |
| AMICE | Associate Member of the Institution of Civil Engineers |
| AMIStructE | Associate Member of the Institution of Structural Engineers |
| ANOD | Anodized |
| BBA | British Board of Agr�ment |
| BCA | British Cement Association |
| BCO | building control officer |
| BCSA | British Constructional Steelwork Association |
| BCWS | boosted cold water service (services) |
| BH | bore hole or beam height (survey) |
| BHWS | boosted hot water service (services) |
| BIG | back inlet gully |
| BLK | blockwork |
| BM | bending moment or bench mark |
| BOQ | bill of quantities |
| BOT | Bottom |
| BRW | brick retaining wall (survey) |
| BS | British Standard |
| BSI | British Standards Institution |
| BSMT | Basement |
| BW | brick wall (survey) or builders’ work (services) |
| BWF | barbed wire fence (survey) |
| BWIC | builders’ work in connection with (services) |
| BWK | brickwork |
| BYND | Beyond |
| C | cill height (survey) |
| CA | contract administrator |
| CAD | computer aided design |
| CAM | computer aided manufacture |
| CBF | close boarded fence (survey) |
| CBW | concrete block wall (survey) |
| CC | centre to centre |
| CDM | Construction (Design and Management) Regulations |
| CE | conformit� europ�ene |
| CEng | chartered engineer |
| CGI | corrugated galvanized iron |
| CH | ceiling height |
| CHNL | Channel |
| CHS | circular hollow section |
| CI | cast iron |
| CIF | corrugated iron fence (survey) |
| CIP | Cast In Place |
| CJ | Control Joint or construction joint |
| CL | cover level or centre line |
| CLF | chain link fence (survey) |
| CLG | Ceiling |
| CLR | Clear |
| CMU | Concrete Masonry Unit |
| COL | Column |
| COMPR | Compressible |
| CONC | Concrete |
| CONT | Continuous |
| CP | code of practice |
| CPF | concrete panel fence (survey) |
| CPS | concrete paving slabs (survey) |
| CPT | Carpet |
| CR | crown height of arch (survey) |
| CRS | centres |
| CRW | concrete retaining wall (survey) |
| CS | Concrete Society |
| CT | Ceramic Tile |
| CTYD | Courtyard |
| CV | commissioning valve (services) |
| CW | concrete wall (survey) |
| CWS | cold water service (services) |
| CWT | hundredweight |
| D, DIA or � | diameter |
| DBL | Double |
| DC | drain cock (services) |
| DCV | double check valve (services) |
| DEMO | Demolish or Demolition |
| DHW | domestic hot water |
| DIA | Diameter |
| DIM | Dimension |
| DIMS | Dimensions |
| DL | dead load |
| DN | Down |
| DOV | drain off valve (services) |
| DP | down pipe |
| DPC | damp-proof course |
| DPDT | double pole double throw switch (electrical) |
| DPM | damp-proof membrane |
| DPST | double pole single throw switch (electrical) |
| DR | Door |
| DRG | drawing |
| DS | District Surveyor |
| DSSO | double switched socket outlet (electrical) |
| DWG | Drawing |
| EA | Each |
| ECB | electricity control box |
| ECUK | Engineering Council United Kingdom |
| EJ | Expansion Joint |
| EL | Elevation or existing level |
| ELEC | Electrical |
| ELEV | Elevator or Elevation |
| EngTech | engineering technician |
| EPDM | Ethylene Propylene Diene M-Class (Roofing) |
| EPP | expanded polypropylene or environmentally preferred product |
| EQ | Equal |
| ERV | expansion relief valve (services) |
| EXIST | Existing |
| EXP JT | Expansion Joint |
| EXT | Exterior |
| FB | flower bed (survey) or from below (services) |
| FBTA | from below to above (services) |
| FC | flexible connection (services) |
| FD | Floor Drain or Fire Department |
| FEC | Fire Extinguisher Cabinet |
| FF | far face (reinforcement) |
| FFL | finished floor level |
| FH | fire hydrant (survey) |
| FICE | Fellow of the Institution of Civil Engineers |
| FIStructE | Fellow of the Institution of Structural Engineers |
| FIXT | Fixture |
| FL | floor level |
| FLR | Floor |
| FM | Filled Metal |
| FND | Foundation |
| FO | Face Of |
| FoS | factor of safety |
| FS | full size or fused spur (electrical) |
| FSC | forest stewardship council (timber) |
| G | gully (survey) |
| GA | Gauge |
| GALV | Galvanized |
| GGBS | ground granulated blastfurnace slag |
| GS | general structural (timber) |
| GWB | Gypsum Wall Board |
| H or HT | window head height (survey) |
| HAC | high alumina cement |
| HC | Hollow Core |
| HDF | high density fibreboard |
| HI | High |
| HL | high level |
| HM | Hollow Metal |
| HP | High Point |
| HR | Hour |
| HSFG | high strength friction grip (steel connection) |
| HT | high tensile |
| HVAC | Heating, Ventilating, And Air Conditioning |
| HWS | hot water service (services) |
| IC | inspection cover (survey) or inspection chamber |
| ICE | Institution of Civil Engineers |
| ID | inside diameter |
| IEng | incorporated engineer |
| IL | invert level |
| ILO | In Lieu Of |
| INSUL | Insulated or Insulation |
| INT | Interior |
| INTER | intermediate switch (electrical) |
| IRF | iron railing fence (survey) |
| IRGWB | Impact Resistant Gypsum Wall Board |
| IStructE | Institution of Structural Engineers |
| IV | isolating valve (services) |
| IWF | interwoven fence (survey) |
| JCB | J C Bamford � manufacturer of wheeled excavators |
| JCT | Joint Contracts Tribunal |
| kg | kilogramme |
| kN | kiloNewton |
| L | light (survey) |
| LA | local authority |
| LL | live load |
| LO | Low |
| LOLER | Lifting Operations and Lifting Equipment Regulations 1998 |
| LP | lamp post (survey) |
| LSL | laminated strand lumber |
| LSV | lockshield valve (services) |
| m | metre |
| MAX | Maximum |
| MC | mass concrete or moderately conservative |
| MCW | mains cold water (services) |
| MDF | medium density fibreboard |
| MECH | Mechanical |
| MEMBR | Membrane |
| MH | manhole |
| MHSW | Management of health and Safety at Work Regulations |
| MICE | Member of the Institution of Civil Engineers |
| MIN | Minimum |
| MIStructE | Member of the Institution of Structural Engineers |
| mm | millimetre |
| MMMF | man made mineral fibres |
| MO | Masonry Opening |
| MRGWB | Moisture-Resistant Gypsum Wall Board |
| MS | mild steel |
| MTL | Metal |
| N | Newton |
| NASC | National Access and Scaffolding Confederation |
| NF | near face (reinforcement) |
| NIC | Not In Contract |
| NO | Number |
| NOM | Nominal |
| NRV | non return valve (services) |
| NTS | not to scale |
| OC | On Center |
| OD | outside diameter or Ordnance datum |
| OH | Opposite Hand or over head |
| OPC | ordinary Portland cement |
| OZ | Ounce |
| P | post |
| PALF | palisade fence (survey) |
| PC | precast concrete |
| PCC | Pre-Cast Concrete or Portland cement concrete |
| PF | picket fence (survey) |
| PFA | pulverised fuel ash |
| PFC | parallel flange channel |
| PKT | pocket (RC) |
| PL or PLT | plate (steel connection) |
| PLUMB | Plumbing |
| PLYD | Plywood |
| PNT | Paint or Painted |
| PPE | personal protective equipment, Personal Protective Equipment at Work Regulations |
| PRF | post and rail fence (survey) |
| PT | Pressure Treated |
| PVC | Polyvinyl Chloride |
| PWD | Permanent Works Designer |
| PWF | post and wire fence (survey) |
| QS | quantity surveyor |
| R | render (survey) |
| RAD | radiator |
| RBR | Rubber |
| RC | reinforced concrete |
| RCP | Reflected Ceiling Plan |
| RD | Roof Drain |
| RE | rodding eye (survey) |
| REQD | Required |
| RHPC | rapid hardening Portland cement |
| RHS | rectangular hollow section |
| RIBA | Royal Institute of British Architects |
| RICS | Royal Institution of Chartered Surveyors |
| RM | Room |
| RMC | ready-mixed concrete |
| RSA | rolled steel angle |
| RSJ | rolled steel joist |
| RWP | rain water pipe |
| SC | stop cock |
| SE | structural engineer |
| SHS | square hollow section |
| SI | Systeme Internationale |
| SIM | Similar |
| SL | soffite level or sky light or sill level |
| SOL | setting-out line |
| SOP | setting-out point |
| SP | soil pipe (services); arch springer height (survey) |
| SPDT | single pole double throw switch (electrical) |
| SPEC | Specified OR Specification |
| SPK | Sprinkler or Speaker |
| SPS | stone paving slabs (survey) |
| SPST | single pole single throw switch (electrical) |
| SRC | sulphate resisting cement |
| SS | stainless steel or simply supported or special structural (timber) |
| SSL | structural slab level |
| SSSO | single switched socket outlet (electrical) |
| SSTL | Stainless Steel |
| STC | Sound Transmission Coefficient |
| STG | staggered (RC) |
| STL | Steel |
| STR | strainer (services) |
| STRUCT | Structure or Structural |
| SV | safety valve (services) |
| SVP | soil and vent pipe |
| SW | stone wall (survey) |
| T&G | Tongue And Groove |
| T/D | Telephone/Data |
| TA | to above (services) |
| TBM | temporary bench mark |
| TELE | Telephone |
| TIStructE | Technician of the Institution of Structural Engineers |
| TLT | Toilet |
| TMICE | Technician Member of the Institution of Civil Engineers |
| TO | Top Of |
| TOB | top of beam |
| TOC | Top Of Concrete |
| TOS | Top Of Steel |
| TOW | top of wall |
| TP | town planning or trial pit |
| TPD | Toilet Paper Dispenser |
| TPO | tree preservation order |
| TPRV | temperature/pressure relief valve (services) |
| TWC | temporary works coordinator |
| TWS | temporary works supervisor |
| TYP | Typical |
| U/S | Underside |
| UB | universal beam |
| UC | universal column |
| UF | urea formaldehyde |
| UNO | Unless Noted Otherwise |
| UTL | unable to lift (survey) |
| V | vent (survey) |
| VIF | Verify In Field |
| VP | Vision Panel or vent pipe (survey) |
| W | window (survey) |
| W/ | With |
| WAHR | Work at Height Regulations |
| WD | Wood |
| WL | water level (survey) |
| WMF | wire mesh fence (survey) |
| WPF | wooden panel fence (survey) |