Acronyms used at Diablo Canyon Nuclear Power Plant (DCPP)
The following alphabetical listing contains abbreviations, acronyms, compound words, technical symbols, and spelling preferred for licensing and other regulatory correspondence.
Letter | Acronym | Definition |
---|---|---|
A | AMSAC | ATWS mitigation system actuation circuitry |
A | Abs | Absolute |
A | ASP | Accident sequence precursor (PRA term) |
A | Acre-ft | Acre-foot |
A | AE | Action Evaluation |
A | AR | Action Request |
A | ALJ | Administrative Law Judge |
A | AL | Administrative Letter (NRC) |
A | ACRS | Advisory Committee on Reactor Safeguards |
A | Aftercooler |
|
A | Air-cooled |
|
A | All-inclusive |
|
A | AVT | All volatile treatment |
A | AOT | Allowed outage time |
A | ARC | Alternate repair criteria |
A | Ac | Alternating current |
A | ACI | American Concrete Institute |
A | AIEE | American Institute of Electrical Engineers |
A | AISC | American Institute of Steel Construction |
A | ANSI | American National Standards Institute |
A | ANEC | American Nuclear Energy Council |
A | ANI | American Nuclear Insurers |
A | ANS | American Nuclear Society |
A | API | American Petroleum Institute |
A | ASTM | American Society for Testing and Materials |
A | ASCE | American Society of Civil Engineers |
A | ASME | American Society of Mechanical Engineers |
A | ASA | American Standards Association |
A | AWS | American Welding Society |
A | AWG | American wire gauge |
A | A/amp | Ampere |
A | A-hr/amp-hr | Ampere-hour |
A | A/cm2 | Ampere per square centimeter |
A | AM | Amplitude modulation |
A | A.m. | Ante meridiem-before noon |
A | ATWS | Anticipated transient without scram |
A | ATWT | Anticipated transient without trip |
A | Antilog/log-1 | Antilogarithm |
A | Antireverse |
|
A | AVB | Antivibration bar |
A | As-built (adj or noun) |
|
A | ALARA | As low as is reasonably achievable |
A | Atm | Atmosphere |
A | AEC | Atomic Energy Commission |
A | AIF | Atomic Industrial Forum |
A | ASLAB | Atomic Safety and Licensing Appeal Board |
A | ASLB | Atomic Safety and Licensing Board |
A | At. no. | Atomic number |
A | At. % | Atomic percent |
A | At. wt | Atomic weight |
A | AFR | Audit Finding Report |
A | AIT | Augmented inspection team (NRC) |
A | ANI | Authorized Nuclear Inspector |
A | ACI | Autoclosure interlock |
A | Autostart |
|
A | Autostop |
|
A | AB | Auxiliary building |
A | AFW | Auxiliary feedwater |
A | ASW | Auxiliary saltwater |
A | Avg | Average |
A | AO | Axial offset |
A | AOC | Axial offset control |
B | BN | Board Notification |
B | B&PV | Boiler and Pressure Vessel (Code) |
B | BTP | Branch Technical Position (NRC) |
B | Btu | British thermal unit |
C | CDFG | California Department of Fish and Game |
C | CDF | California Department of Forestry |
C | CDMG | California Division of Mines and Geology |
C | CPUC | California Public Utilities Commission |
C | CRWQCB | California Regional Water Quality Control Board |
C | C | Celsius |
C | CCRWQCB | Central Coast Regional Water Quality Control Board |
C | C of C | Certificate of Compliance |
C | CMTR | Certified Material Test Report |
C | CFR | Code of Federal Regulations |
C | CRGR | Committee to Review Generic Requirements (NRC) |
C | COLR | Core Operating Limits Report |
C | CERP | Corporate Emergency Response Plan |
C | CIRC | Corporate Incident Response Center |
C | CCC | Correspondence control center |
D | DLAP | Department-Level Administrative Procedure |
D | DOD | Department of Defense |
D | DOE | Department of Energy |
D | DER | Department of Engineering Research |
D | DHS | Department of Health Services (California) |
D | DPH | Department of Public Health (county) |
D | DOT | Department of Transportation |
D | DBM | Design Basis Management |
D | DCM | Design Criteria Memorandum |
D | DCISC | Diablo Canyon Independent Safety Committee |
D | DCL-98-XXX | Diablo Canyon Letter |
D | DCPP | Diablo Canyon Nuclear Power Plant |
D | DCPRA | Diablo Canyon probabilistic risk assessment |
D | DR | Discrepancy Report or Deviation Report |
D | D.C. | District of Columbia |
D | DC | District of Columbia (in address with zipcode) |
D | DPR | Division of Power Reactors (AEC) |
D | DES | Draft Environmental Statement (NRC) |
E | EEI | Edison Electric Institute |
E | EPRI | Electric Power Research Institute |
E | EOC | Emergency Operations Center |
E | EOF | Emergency Operations Facility |
E | ERF | Emergency Response Facility |
E | ERFDS | Emergency Response Facility Data System |
E | ERMC | Emergency Response Media Center |
E | ERP | Emergency Response Plan |
E | ES (also OES) | Emergency Services, California Office of |
E | EIC | Energy Information Center |
E | ERDA | Energy Research and Development Administration |
E | ES | Engineering Services |
E | EIS | Environmental Impact Statement |
E | EPA | Environmental Protection Agency (U.S. government) |
E | EPP | Environmental Protection Plan |
E | ER | Environmental Report |
E | EIT | Event Investigation Team |
E | ERT | Event Response Team |
E | EDO | Executive Director for Operations (NRC) |
F | F | Fahrenheit |
F | f | Farad |
F | FEMA | Federal Emergency Management Administration |
F | FERC | Federal Energy Regulatory Commission |
F | FR | Federal Register |
F | FWPCA | Federal Water Pollution Control Act |
F | FWQA | Federal Water Quality Act |
F | FES | Final Environmental Statement |
F | FSAR | Final Safety Analysis Report |
F | FPP | Fire Protection Program |
F | FTI | Framatome Technologies, Inc. |
F | FOIA | Freedom of Information Act |
G | GL | Generic Letter |
H | HWMP | Hazardous Waste Minimization Program |
H | HIT | High Impact Team |
H | HI-STAR | Holtec International Storage, Transport and Repository |
H | HI-STORM | Holtec International Storage and Transfer Operation Reinforced Module |
H | HE | Hosgri earthquake |
H | HBL-98-XXX | Humboldt Bay Letter |
H | HBPP | Humboldt Bay Power Plant |
I | Ibid. | Ibidem (in the same place) |
I | ITS | Improved Technical Specifications |
I | IDVP | Independent Design Verification Program |
I | ISC | Independent Safety Committee |
I | IR | Inspection Report (NRC) |
I | IEEE | Institute of Electrical and Electronics Engineers |
I | INPO | Institute of Nuclear Power Operations |
I | ISA | Instrument Society of America |
I | IIT | Integrated Inspection Team |
I | ISAP | Integrated Safety Assessment Program |
I | IDAP | Inter-Departmental Administrative Procedure |
I | ICRP | International Commission on Radiation Protection |
I | SI | International System of Units (Standard International) |
J | JCAE | Joint Committee on Atomic Energy |
J | JMC | Joint Media Center |
L | LER | Licensee Event Report |
L | LIS | Licensing Information Service |
L | LDBAP | Licensing and Design Bases Alignment Program |
L | LTSP | Long Term Seismic Program |
L | LPMS | Loose Parts Monitor System |
M | MAS | Management Action System (PIMS) |
M | MM | Mechanical Maintenance |
M | Mode 2 (Startup) |
|
M | Mode 3 (Hot Standby) |
|
M | Mode 4 (Hot Shutdown) |
|
M | Mode 5 (Cold Shutdown) |
|
M | Mode 6 (Refueling) |
|
M | Mode l (Power Operation) |
|
M | MAAP | Modular Accident Analysis Program |
M | MFP | Mothers for Peace |
N | NBFU | National Board of Fire Underwriters |
N | NBS | National Bureau of Standards |
N | NEC | National Electric Code |
N | NEMA | National Electrical Manufacturer's Association |
N | NEPA | National Environmental Policy Act |
N | NFPA | National Fire Protection Association |
N | NFPC | National Fire Protection Code |
N | NPDES | National Pollutant Discharge Elimination System |
N | NCR | Nonconformance Report |
N | NOD | Notice of Deviation |
N | NOV | Notice of Violation |
N | NEI | Nuclear Energy Institute |
N | NEI-98-XXX | Nuclear Energy Institute Letter |
N | NUMARC | Nuclear Management and Resources Council |
N | NMSS | Nuclear Material Safety and Safeguards (NRC) |
N | NPAP | Nuclear Plant Administrative Procedure |
N | NPPR | Nuclear Plant Problem Report |
N | NPRDS | Nuclear Plant Reliability Data System |
N | NPG | Nuclear Power Generation |
N | NQS | Nuclear Quality Services |
N | NRR | Nuclear Reactor Regulation (NRC) |
N | NSOC | Nuclear Safety Oversight Committee |
N | NTS | Nuclear Technical Services |
N | NUFPG | Nuclear Utility Fire Protection Group |
O | OSHA | Occupational Safety and Health Administration |
O | AEOD | Office for the Analysis and Evaluation of Operational Data (NRC) |
O | OES (also ES) | Office of Emergency Services (State) |
O | OIE or IE | Office of Inspection and Enforcement (State) |
O | IG | Office of Inspector General (NRC) |
O | NMSS | Office of Nuclear Material Safety and Safeguards (NRC) |
O | ODES | Onsite Dosimetry and Environmental Services |
O | OMMS | Onsite Meteorological Monitoring System |
O | OTSC | Onsite Technical Support Center |
O | ORAT | Operational Readiness Assessment Team (NRC) |
O | OSC | Operational Support Center |
P | PIP | Performance Incentive Plan |
P | PRP | Performance Recognition Program |
P | PSER | Physical Security Event Report |
P | PSP | Physical Security Plan |
P | PIMS | Plant Information Management System |
P | PIM | Plant Issues Matrix (NRC) |
P | PSRC | Plant Staff Review Committee |
P | PSDAR | Post-Shutdown Decommissioning Activities Report |
P | PSAR | Preliminary Safety Analysis Report |
P | PNAC | President's Nuclear Advisory Committee |
P | PVRC | Pressure Vessel Research Committee |
P | PCP | Process Control Program |
P | PD | Program Directive |
P | PAG | Protective Action Guide (exposure limits) |
P | PDR | Public Document Room |
P | PSD | Public Staff Division (of CPUC |
P | PUC | Public Utilities Commission |
Q | Q-List (classification listing of structures, systems, and components) |
|
Q | QAPR | Quality Assurance Problem Report |
Q | QE | Quality Evaluation |
Q | Quality Hotline |
|
Q | QPAR | Quality Performance Assessment Report |
Q | QPR | Quality Problem Report |
Q | QPSR | Quality Problem Status Report |
R | RETS | Radiological Effluent Technical Specifications |
R | REMP | Radiological Environmental Monitoring Program |
R | RRS | Radiological and Radwaste Services |
R | RATI | Readiness Assessment Team Inspection (NRC) |
R | Region IV (NRC) |
|
R | RWQCB | Regional Water Quality Control Board |
R | RG, Reg Guide | Regulatory Guide |
R | RRG | Regulatory Review Group (NRC) |
R | RS | Regulatory Services |
R | RE | Resident Engineer (NRC) |
R | RCRA | Resource Conservation Recovery Act |
R | R | Roentgen |
R | Rem | Roentgen equivalent man |
R | R/hr | Roentgens per hour |
R | R/min | Roentgens per minute |
S | SCP | Safeguards Contingency Plan |
S | SER | Safety Evaluation Report |
S | SECY | Secretary (of NRC) papers |
S | SEC | Securities and Exchange Commission |
S | SIR | Security Incident Report |
S | SISIP | Seismically Induced Systems Interaction Program |
S | SPPR | Semiannual Plant Performance Review (NRC) |
S | SRO | Senior Reactor Operator |
S | Severity Level I, II, III, IV, V violation |
|
S | STA | Shift Technical Advisor |
S | SOER | Significant Operating Event Report (INPO) |
S | SFPE | Society of Fire Protection Engineers |
S | SR | Special Report |
S | SWP | Special Work Permit |
S | SFPO | Spent Fuel Project Office (NRC) |
S | SRM | Staff Requirements Memorandum (NRC) |
S | Staff (use initial cap when referring to NRC) |
|
S | SP | Standard Practice |
S | SRP | Standard Review Plan |
S | STS | Standard Technical Specifications |
S | ES (also OES) | State Office of Emergency Services |
S | SEAOC | Structural Engineering Association of California |
S | SSPC | Structural Steel Painting Council |
S | SSER | Supplement to SER |
S | SAFR | Supplier Audit Finding Report |
S | SER | Supplier Evaluation Report |
S | SALP | Systematic Assessment of Licensee Performance |
T | TER | Technical Evaluation Report (NRC) |
T | TMS | Technical Maintenance Services |
T | TRG | Technical Review Group |
T | TS, Tech Spec | Technical Specification |
T | TSIP | Technical Specification Improvement Program |
T | TSC | Technical Support Center |
T | TEMP | Thermal Effects Monitoring Program |
T | TSAR | Topical Safety Analysis Report |
T | TZ | Transaction Zone |
U | USCGS | U.S. Coast and Geodetic Survey |
U | USCEA | U.S. Council for Energy Awareness |
U | USGS | U.S. Geological Survey |
U | UL | Underwriters Laboratory |
U | UBC | Uniform Building Code |
U | UFC | Uniform Fire Code |
U | UPC | Uniform Plumbing Code |
V | V-notch (hardness test) |
|
W | W | Westinghouse |
W | WEXTEX | Westinghouse Explosive Tube Expansion |
W | WOG | Westinghouse Owners Group |
W | WANO | World Association of Nuclear Operators |
B | backdraft |
|
B | backflow |
|
B | backpressure |
|
B | backseat (valves) |
|
B | backup (noun or adj), back up (verb) |
|
B | BOP | balance-of-plant |
B | bbl/d | barrel per day |
B | bbl | barrel(s) |
B | base load |
|
B | basemat |
|
B | baseplate |
|
B | BEPZ | basic emergency planning zone |
B | bedrock |
|
B | BOL | beginning of life |
B | beltline |
|
B | beyond-design-basis (accident) |
|
B | biaxial |
|
B | bidirectional |
|
B | BeV | billion electron volts |
B | bistable |
|
B | biweekly |
|
B | blowdown |
|
B | blueprint |
|
B | bp | boiling point |
B | BWR | boiling water reactor |
B | boiloff |
|
B | BCMS | boron concentration measurement system |
B | BCMS | boron concentration monitoring system |
B | BIT | boron injection tank |
B | BHP | brake horsepower |
B | breakwater |
|
B | bldg | building |
B | buildup (noun or adj), build up (verb) |
|
B | built-in (adj) |
|
B | burnup (noun or adj), burn up (verb) |
|
B | bypass |
|
C | calc | calculation |
C | cal | calorie |
C | CRT | cathode-ray tube |
C | CSAT | caustic spray additive tank |
C | centerline |
|
C | cm | centimeter(s) |
C | cm/sec | centimeters per second |
C | CCP | centrifugal charging pump |
C | CTE | change, test, or experiment |
C | changeout (noun or adj), change out (verb) |
|
C | checkerplate |
|
C | checklist |
|
C | CVCS | chemical and volume control system |
C | C&RP | chemistry and radiation protection |
C | cleanup (noun or adj), clean up (verb) |
|
C | CCTV | closed circuit television |
C | closeout (noun or adj), close out (verb) |
|
C | coastdown (noun or adj), coast down (verb) |
|
C | coeff | coefficient |
C | cogenerate |
|
C | cold leg |
|
C | CLT | cold leg thinning |
C | CWF | cold wall factor |
C | CZP | cold zero power |
C | CCS | commitment control system |
C | CCWS | component cooling water system |
C | CFW | condensate and main feedwater |
C | CST | condensate storage tank |
C | CFCU | containment fan cooler unit |
C | CHMS | containment hydrogen monitoring system |
C | CHPS | containment hydrogen purge system |
C | CSAS | containment spray additive system |
C | CSS | containment spray system |
C | CVI | containment ventilation isolation |
C | CVIS | containment ventilation isolation system |
C | CRDM | control rod drive mechanism |
C | CRDR | control room design review |
C | CRPS | control room pressurization system |
C | cooldown (noun or adj), cool down (verb) |
|
C | CDF | core damage frequency |
C | CBLA | cost beneficial licensing action |
C | cost-benefit |
|
C | cost-effective |
|
C | cost-plus |
|
C | cost-reimbursable |
|
C | C | coulomb |
C | countercurrent |
|
C | cpm | counts per minute |
C | CHF | critical heat flux |
C | cross-check |
|
C | cross flow |
|
C | cross-reference |
|
C | cross-section (adj), cross section (noun) |
|
C | crossbar |
|
C | crosstie |
|
C | crosswind |
|
C | cc (or cm3) | cubic centimeter |
C | cfh (or ft3/hr) | cubic feet per hour |
C | cfm (or ft3/min) | cubic feet per minute |
C | cfs (or ft3/sec) | cubic feet per second |
C | cu ft (or ft3) | cubic foot |
C | cu in. (or in.3) | cubic inch |
C | cu m (or m3) | cubic meter |
C | cu mm (or mm3) | cubic millimeter |
C | cu yd (or yd3) | cubic yard |
C | Ci | curie |
C | cutoff (noun or adj), cut off (verb) |
|
C | Hz or cps | cycles per second |
D | database |
|
D | deborate |
|
D | dB | decibel |
D | defense-in-depth |
|
D | defoaming |
|
D | DOF | degree-of-freedom |
D | Anddeg; or deg | degree (plane angle) |
D | Canddeg;;Canddeg; | degrees Celsius; Celsius degrees (for temperature change or difference) |
D | Fanddeg;;Fanddeg; | degrees Fahrenheit; Fahrenheit degrees (for temperature change or difference) |
D | K (anddeg; not used) | degrees Kelvin (absolute) |
D | Anddeg;R | degrees Rankine |
D | demultiplexer |
|
D | DNB | departure from nucleate boiling |
D | DNBR | departure from nucleate boiling ratio |
D | DBA | design basis accident |
D | DBD | design basis document |
D | DBE | design basis earthquake |
D | DBT | design basis threat |
D | DBV | design basis vehicle |
D | DCN | design change notice |
D | DCP | design change package |
D | DCR | design change request |
D | DE | design earthquake |
D | DFE | design flood event |
D | dew point |
|
D | dewater |
|
D | DET | diagnostic evaluation team (NRC) |
D | dia | diameter |
D | DEG | diesel engine generator |
D | DG or D/G | diesel generator |
D | DBW | differential boron worth |
D | DP or delta P | differential pressure |
D | DPV | differing point of view (NRC) |
D | DPO | differing professional opinion (NRC) |
D | DRPI | digital rod position indicator |
D | dc | direct current |
D | dpm | disintegrations per minute |
D | dps | disintegrations per second |
D | DTC | doppler temperature coefficient |
D | DDE | double design earthquake |
D | DER | double-ended rupture |
D | down time |
|
D | downstream |
|
D | downwind |
|
D | drawdown (noun or adj), draw down (verb) |
|
D | DLF | dynamic load factor |
D | dyn | dyne |
E | EWS | early warning system |
E | EFPD | effective full power days |
E | EFPH | effective full power hours |
E | EFPY | effective full power year |
E | EMF | effective multiplication factor |
E | eff | efficiency |
E | EDM | electrode discharge machining |
E | EH | electrohydraulic |
E | EMI | electromagnetic interference |
E | emp | electromagnetic pulse |
E | emu | electromagnetic units |
E | emf | electromotive force |
E | e | electron |
E | e.u. | electron units |
E | eV | electron volt |
E | EDMS | electronic document management system |
E | electrosleeving |
|
E | esu | electrostatic units |
E | el | elevation |
E | EARS | emergency assessment and response system |
E | ECCS | emergency core cooling system |
E | EDG | emergency diesel generator |
E | ENS | emergency notification system |
E | EOP | emergency operating procedure |
E | EPZ | emergency planning zone |
E | EPS | emergency power system |
E | EOC | end of cycle |
E | EOL | end of life |
E | endpoint |
|
E | ESF | engineered safety feature |
E | ESFAS | engineered safety features actuation system |
E | EAC | engineering advisory committee |
E | ECN | engineering change notice |
E | ECO | engineering change order |
E | EWR | engineering work request |
E | EQ | environmental qualification |
E | ECG | equipment control guidelines |
E | EFPY | equivalent full power years |
E | est | estimate |
E | (and others) | et al |
E | etc. | et cetera (and so forth) |
E | et seq. | et sequentes (and the following) |
E | EAB | exclusion area boundary |
E | e.g. | exempli gratia (for example) |
E | exp | exponent, exponential |
F | fab | fabricate |
F | FAI | fail-as-is |
F | FC | fail-closed |
F | FO | fail-open |
F | fail-safe |
|
F | FMEA | failure modes and effects analysis |
F | feedwater |
|
F | FLB | feedwater line break |
F | ft | feet |
F | fpm | feet per minute |
F | fps | feet per second |
F | FCN | field change notice |
F | FCO | field change order |
F | FCR | field change request |
F | FCT | field change transmittal |
F | FCT | field correction transmittal |
F | FDR | field deficiency report |
F | field-fabricated |
|
F | FIR | field installation request |
F | field-routed |
|
F | field-run |
|
F | fig. | figure (capitalize when specified) |
F | FHARE | fire hazards Appendix R evaluations |
F | FPS | fire protection system |
F | fire water |
|
F | FWST | fire water storage tank |
F | first-line (adj) |
|
F | fishplate |
|
F | fixed-fee (adj) |
|
F | FCV | flow control valve |
F | FD | flow diagram |
F | FIT | flow-indicating transmitter |
F | FI | flow indicator |
F | flow-induced |
|
F | FT | flow transmitter |
F | flowmeter |
|
F | flowpath |
|
F | flowrate |
|
F | follow-up (noun or adj), follow up (verb) |
|
F | ft | foot, feet |
F | ft-lb | foot-pound |
F | ft-kip | foot-pound (thousands) |
F | FMEA | foreign material exclusion area |
F | fossil-fueled (preferred over fossil-fired) |
|
F | fdn | foundation |
F | fp | freezing point |
F | freq | frequency |
F | FM | frequency modulation |
F | FHB | fuel handling building |
F | fuel-to-cladding |
|
F | full-length (adj) |
|
F | full power (noun and adj) |
|
F | full-scale (adj) |
|
F | full-size (adj) |
|
F | full-time (adj), full time (adverb) |
|
G | gal. | gallon(s) |
G | gpd | gallons per day |
G | gph | gallons per hour |
G | gpm | gallons per minute |
G | gps | gallons per second |
G | GTAW | gas tungsten arc welding |
G | G | gauss (unit of magnetic flux density) |
G | GDC | general design criterion |
G | GSI | generic safety issue |
G | G | giga- (10 9) (prefix) |
G | GHz | gigahertz |
G | GW | gigawatt |
G | GWh | gigawatt-hour |
G | GV | governor valve |
G | g-cal | gram-calorie |
G | gf | gram-force |
G | gmv | gram-molecular volume |
G | g | gram(s) |
G | g/cm3 | grams per cubic centimeter |
G | g/L | grams per liter |
G | g | gravity, acceleration of |
G | GFFD | gross failed fuel detector |
G | groundwater |
|
H | half-life |
|
H | HCV | hand control valve |
H | hands-on |
|
H | hav | haversine |
H | hdr | header |
H | HX | heat exchanger |
H | heat-treated |
|
H | htr | heater |
H | HVAC | heating, ventilating, and air conditioning |
H | heatup (noun or adj), heat up (verb) |
|
H | heavy-duty (adj), heavy duty (noun) |
|
H | H | henry |
H | Hz | hertz (cycles per second) |
H | HCLPF | high-confidence-of-low-probability-of-failure |
H | high-density (adj) |
|
H | HEPA | high-efficiency particulate air (filter) |
H | high-energy (adj) |
|
H | HELB | high-energy line break |
H | hf | high-frequency (adj) |
H | high-level (adj) |
|
H | HP | high-pressure (adj) |
H | HPCI | high pressure coolant injection |
H | HPSI | high pressure safety injection |
H | high-temperature (adj) |
|
H | HTR | high temperature resistant |
H | hv | high-voltage (adj) |
H | holddown (noun or adj), hold down (verb) |
|
H | holdup (noun or adj), hold up (verb) |
|
H | hp | horsepower |
H | HCF | hot channel factor |
H | HFT | hot functional test |
H | hot leg |
|
H | hotwell |
|
H | hr | hour(s) |
H | HPES | human performance evaluation system |
H | hydroelectric |
|
H | pH | hydrogen ion concentration |
H | hydrotesting |
|
I | i.e. | id est (that is) |
I | id. | idem (the same) |
I | ITS | important to safety |
I | in-depth (adj), in depth (adv) |
|
I | in-house (adj) |
|
I | in-leakage |
|
I | in-line (adj) |
|
I | in-phase (adj) |
|
I | in-place (adj) |
|
I | in-plant (adj) |
|
I | in process |
|
I | in progress |
|
I | in situ |
|
I | in. | inch(es) |
I | in. /s | inches per second |
I | incore |
|
I | ISFSI | independent spent fuel storage installation |
I | ITR | independent technical reviewer |
I | IPE | individual plant examination |
I | IPEEE | individual plant examination for external events |
I | IN | information notice |
I | inservice |
|
I | ISI | inservice inspection |
I | ILT | inservice leak test |
I | IST | inservice testing |
I | ID | inside diameter |
I | I&C | instrumentation and controls |
I | intake structure |
|
I | ICS | integrated communications system |
I | ILRT | integrated leak rate test |
I | ILS | integrated living schedule |
I | IPAP | integrated performance assessment process (NRC) |
I | inter alia (among other things) |
|
I | IGA | intergranular attack |
I | IGSCC | intergranular stress corrosion cracking |
I | IOM | interoffice memorandum |
I | intertidal |
|
I | isophase |
|
I | INVDIO | issue needing validation to determine its impact on operability |
J | jobsite |
|
J | J | joule |
J | JCO | justification for continued operation |
K | k | kilo- (103) (prefix) |
K | kandOmega; | kilo-ohm |
K | kcal | kilocalorie |
K | kCi | kilocurie |
K | kc | kilocycle |
K | kHz or kc/sec | kilocycles per second |
K | keV | kiloelectron volt |
K | kG | kilogauss |
K | kg | kilogram(s) |
K | kg/m3 | kilograms per cubic meter |
K | kHz | kilohertz |
K | kJ | kilojoule |
K | kL | kiloliter |
K | km | kilometer(s) |
K | km/s | kilometers per second |
K | kVARh | kilovar hour |
K | kVAR | kilovar (reactive kilovolt-ampere) |
K | kV | kilovolt |
K | kVA | kilovolt-ampere |
K | kVAh | kilovolt-ampere hour |
K | kW | kilowatt |
K | kWe | kilowatt (electric) |
K | kWh | kilowatt-hour |
K | kWt | kilowatt (thermal) |
K | KE or T | kinetic energy |
K | kip | kip (1000 lb) |
L | large-bore (adj) |
|
L | LERF | large early release frequency |
L | large-scale (adj) |
|
L | lat | latitude |
L | laydown |
|
L | Pb | lead (element) |
L | lead time |
|
L | leakoff (noun or adj), leak off (verb) |
|
L | leakrate |
|
L | leaktight |
|
L | leaktightness |
|
L | letdown (noun or adj), let down (verb) |
|
L | LCV | level control valve |
L | LI | level indicator |
L | LS | level sensor |
L | LT | level transmitter |
L | LAR | license amendment request |
L | LB | licensing basis |
L | LBIE | licensing basis impact evaluation (50.59 evaluation) |
L | life-support (adj) |
|
L | LED | light emitting diode |
L | LS | limit switch |
L | LCO | limiting condition for operation |
L | lf | linear feet |
L | LVDT | linear variable differential transformer |
L | L | liter(s) |
L | LL | live load |
L | loadout (noun or adj), load out (verb) |
|
L | LLRT | local leak rate test |
L | log (ln) | logarithm (natural) |
L | long-term (adj) |
|
L | long. | longitude |
L | LOCA | loss-of-coolant accident |
L | LOOP | loss of offsite power |
L | low-level (adj) |
|
L | LLW | low-level waste (but: very low level waste) |
L | low-low |
|
L | LPZ | low population zone |
L | LPD | low power density |
L | LP | low-pressure (adj) |
L | LSA | low specific activity |
L | LTOP | low temperature overpressure protection |
L | LLD | lower limits of detection |
L | lumenlm |
|
L | lm/W | lumens per watt |
L | lump-sum (adj) |
|
M | MT | magnetic particle test |
M | MCES | main condenser evacuation system |
M | MCB | main control board |
M | MFW | main feedwater |
M | MFWP | main feedwater pump |
M | MSIV | main steam isolation valve |
M | MSLB | main steam line break |
M | MSSS | main steam supply system |
M | makeup (noun, adj), make up (verb) |
|
M | man-rem |
|
M | mgr | manager |
M | manhour |
|
M | manpower |
|
M | mfg | manufacturing |
M | manways |
|
M | margin of safety |
|
M | markup (noun), marked-up (adj) |
|
M | max | maximum |
M | MPC | maximum permissible concentration |
M | Mx | maxwell |
M | MLLW | mean lower low water |
M | MSL | mean sea level |
M | M&TE | measurement and test equipment |
M | mech | mechanical |
M | M | mega- (106) (prefix) |
M | MCi | megacurie |
M | Mc | megacycle |
M | MHz | megahertz (megacycles per second) |
M | MV | megavolt |
M | MVA | megavolt-ampere |
M | MW | megawatt |
M | MWd/kgU or MWD/KGU | megawatt days per kilogram of uranium |
M | MWd/mtU or MWD/MTU | megawatt days per metric ton of uranium |
M | MWe | megawatt, electrical |
M | MWh | megawatt-hour |
M | MWt | megawatt, thermal |
M | MO | megohm |
M | MOA | memorandum of agreement (NRC) |
M | metalclad |
|
M | MKS | meter-kilogram-second (system of units) |
M | m | meter(s) |
M | m/s | meters per second |
M | mho |
|
M | : | micro- (10-6) (prefix) |
M | :A | microampere |
M | :A | microangstrom |
M | :C | microcoulomb |
M | :Ci | microcurie |
M | :F | microfarad |
M | :g | microgram |
M | :H | microhenry |
M | :L | microliter |
M | :m | micrometer |
M | :mho | micromho |
M | :: | micromicron (10-12 m) |
M | :M or :mol | micromole |
M | : | micron (10-6 m) |
M | :s | microsecond |
M | :V | microvolt |
M | :W | microwatt |
M | MOL | middle of life |
M | midloop |
|
M | midpower |
|
M | midrange |
|
M | midscale |
|
M | mph | miles per hour |
M | m | milli- (10-3) (prefix) |
M | mA | milliampere |
M | mCi | millicurie |
M | mF | millifarad |
M | mg | milligram(s) |
M | mH | millihenry |
M | mL | milliliter(s) |
M | mm | millimeter(s) |
M | mmho | millimho |
M | MCM | million circular mills |
M | MeV | million electron volts |
M | MV | million volts |
M | mRem | millirem |
M | mR | milliroentgen |
M | ms | millisecond |
M | mV | millivolt |
M | mW | milliwatt |
M | min | minimum |
M | MCHFR | minimum critical heat flux ratio |
M | MCPR | minimum critical power ratio |
M | min | minute(s) |
M | misc | miscellaneous |
M | MELB | moderate energy line break |
M | MTC | moderator temperature coefficient |
M | MSR | moisture separator-reheater |
M | mol wt | molecular weight |
M | MRS | monitored retrievable storage |
M | MCC | motor control center |
M | MG | motor generator |
M | MOV | motor-operated valve |
M | multi-degree-of-freedom |
|
M | MPC | multi-purpose canister |
M | multichannel |
|
M | multiconductor |
|
M | multiplex |
|
M | multivariable |
|
N | n | nano- (10-9) (prefix) |
N | NR | narrow range |
N | near-term (adj) |
|
N | NTOL | near-term operating license |
N | NPSH | net positive suction head |
N | n/cm 2 | neutrons per square centimeter |
N | n/cm2 -sec | neutrons per square centimeter per second |
N | N | newton |
N | NDT | nil ductility temperature |
N | N | nitrogen |
N | NDD | no detectable degradation |
N | no-load (condition) |
|
N | non-1E |
|
N | non-Q |
|
N | nonaccident |
|
N | noncondensable |
|
N | nonconsumable |
|
N | NDE | nondestructive examination |
N | NDT | nondestructive testing |
N | nonexistent |
|
N | nongaseous |
|
N | nonlinear |
|
N | nonmanual |
|
N | nonmarine |
|
N | nonnuclear |
|
N | nonpositive |
|
N | nonradioactive |
|
N | NPTS | nonradiological permit tracking system |
N | nonrecurring |
|
N | nonregenerative |
|
N | nonreversing |
|
N | nonsafety-related |
|
N | nonseismic |
|
N | nonstructural |
|
N | nonunion |
|
N | nonvital |
|
N | NOP | normal operating pressure |
N | NOT | normal operating temperature |
N | N/C | normally closed |
N | N/O | normally open |
N | N/A | not applicable |
N | NTS | not to scale |
N | NIS | nuclear instrumentation system |
N | keff or keff | nuclear reactivity |
N | NSSS | nuclear steam supply system |
N | number(s)no. (nos.) |
|
O | oceanside |
|
O | off-line (adj), off line (adv) |
|
O | offgas |
|
O | offshore |
|
O | offsite |
|
O | AndOmega; | ohm |
O | OCB | oil circuit breaker |
O | OWS | oil-water separator |
O | on-line (adj), on line (adv) |
|
O | OTSC | on-the-spot-change |
O | one-dimensional |
|
O | one-half |
|
O | ongoing |
|
O | onshore |
|
O | onsite |
|
O | OE | operability evaluation |
O | OBA | operating basis accident |
O | OBE | operating basis earthquake |
O | OBI | operating basis incident |
O | OEA | operating experience assessment |
O | OL | operating license |
O | OP | operating procedure |
O | OVID | operating valve identification diagram |
O | O&M | operations and maintenance |
O | OOS | out of service |
O | OD | outside diameter |
O | ODSCC | outside diameter stress corrosion cracking |
O | overcurrent |
|
O | overemphasize |
|
O | overpower |
|
O | overpressurization |
|
O | oversized |
|
O | OPC | overspeed protection control |
O | overtemperature |
|
O | overvoltage |
|
P | p (pp) | page(s) |
P | part-time (adj), part time (adv) |
|
P | PID | partial initial decision |
P | PT | particle testing |
P | ppb | parts per billion |
P | ppm | parts per million |
P | Pa | pascal |
P | pathway |
|
P | PCT | peak cladding temperature |
P | PGA | peak ground acceleration |
P | PGV | peak ground velocity |
P | PT | penetrant test (dye) |
P | % | percent |
P | PI | performance indicator |
P | PERS | personnel exposure records system |
P | p | pico- (10-12) (prefix) |
P | pCi | picocurie |
P | pF | picofarad |
P | piperack |
|
P | pipeway |
|
P | P&IS | piping and instrument schematic |
P | P&ID | piping and instrumentation diagram (drawing) |
P | PLEX | plant life extension |
P | PPR | plant performance review (NRC) |
P | PPT | plant performance template (NRC) |
P | PPC | plant process computer |
P | PPS | plant protection system |
P | plant-specific |
|
P | PVC | polyvinyl chloride |
P | PCD | population center distance |
P | PDP | positive displacement pump |
P | post-LOCA |
|
P | post-accident |
|
P | PAM | post-accident monitoring |
P | PASS | post-accident sampling system |
P | PMT | post-maintenance test |
P | p.m. | post meridiem (after noon) |
P | post-operational |
|
P | post-tensioned |
|
P | PWHT | post-weld heat treatment |
P | PE | potential energy |
P | lb | pound(s) |
P | psi | pounds per square inch |
P | psia | pounds per square inch, absolute |
P | psid | pounds per square inch, differential |
P | psig | pounds per square inch, gage |
P | power block |
|
P | PCB | power circuit breaker |
P | PF | power factor |
P | power-operated |
|
P | PORV | power(pressure)-operated relief valve |
P | PR | power range |
P | PRNI | power range nuclear instrument |
P | pre-award |
|
P | preaccident |
|
P | preamplifier |
|
P | prefab | prefabricated |
P | prefilter |
|
P | preinspect |
|
P | prejob |
|
P | preoperational |
|
P | prepressurization |
|
P | PSI | preservice inspection |
P | preset |
|
P | PTLR | pressure and temperature limits report |
P | PI | pressure indicator |
P | mm Hg | pressure (millimeter of mercury) |
P | PS | pressure switch |
P | PT | pressure transmitter |
P | PTS | pressurized thermal shock |
P | PWR | pressurized water reactor |
P | PRT | pressurizer relief tank |
P | PSRV | pressurizer safety relief valve |
P | PM | preventive maintenance |
P | PWSCC | primary water stress corrosion cracking |
P | PRA | probabilistic risk assessment |
P | POD | probability of detection |
P | POPCD | probability of prior cycle detection |
P | pe | probable error |
P | PMF | probable maximum flood |
P | PMP | probable maximum precipitation |
P | procedure (capitalize when specific) |
|
P | PCD | procedure commitment database |
P | POA | prompt operability assessment |
P | PAB | protected area boundary |
P | PAS | public address system |
P | pumpdown |
|
P | punchlist |
|
P | PO | purchase order |
Q | QPTR | quadrant power tilt ratio |
Q | QTD | quadrant tilt difference |
Q | QBL | qualified bidders list |
Q | QSL | qualified suppliers list |
Q | QAP | quality assurance procedure |
Q | QA | quality assurance (when used generically) |
Q | QAF | quality audit finding |
Q | QC | quality control (when used generically) |
R | rad | radian |
R | rad/s | radian per second |
R | rad | radiation absorbed dose |
R | RCA | radiation control access |
R | RCP | radiation control procedure |
R | RCV | radiation control valve |
R | RMS | radiation monitoring system |
R | R(P)M | radiation (process) monitor |
R | RC | radiochemical |
R | RCA | radiological controlled area |
R | r | radius |
R | radwaste |
|
R | RAM | random-access memory |
R | rarefaction |
|
R | RWSR | raw water storage reservoir |
R | RCCW | reactor component cooling water |
R | RCL | reactor coolant loop |
R | RCPB | reactor coolant pressure boundary |
R | RCP | reactor coolant pump |
R | RCS | reactor coolant system |
R | RCIC | reactor core isolation cooling |
R | RPS | reactor protection system |
R | RTS | reactor testing system |
R | RTB | reactor trip breaker |
R | RTS | reactor trip system |
R | RVHVS | reactor vessel head vent system |
R | RVID | reactor vessel integrity database |
R | RVLIS | reactor vessel level instrumentation system |
R | RVRLIS | reactor vessel refueling level indication system |
R | ROM | read-only memory |
R | readout |
|
R | real time |
|
R | reanalyze |
|
R | recalibrate |
|
R | RMS | records management system |
R | red-line |
|
R | reenergize |
|
R | reevaluate |
|
R | Ref., Refs. | reference(s) |
R | RWST | refueling water storage tank |
R | RH | relative humidity |
R | RAOC | relaxed axial offset control |
R | RCM | reliability centered maintenance |
R | RPE | replacement parts evaluation |
R | RAI | request for additional information (NRC) |
R | RFP | request for proposal |
R | RRS | required response spectra (equip. testing) |
R | reracking |
|
R | rerun |
|
R | RHRS | residual heat removal system |
R | RTD | resistance temperature detector |
R | RC | responsibility center |
R | retrofit |
|
R | rev. | revision |
R | rpm | revolutions per minute |
R | rps | revolutions per second |
R | riprap |
|
R | RCC | rod cluster control |
R | RCCA | rod cluster control assembly |
R | RPI | rod position indication |
R | rms | root mean square |
R | RPC | rotating pancake coil |
R | runback |
|
R | runoff |
|
R | runup (wave) |
|
S | SSE | safe shutdown earthquake |
S | SFAS | safety feature actuation system |
S | SIF | safety identification factor |
S | SIS | safety injection system |
S | SPDS | safety parameter display system |
S | safety-related |
|
S | SRV | safety relief valve |
S | SV | (safety)(solonoid)(stop) valve |
S | SSFAR | safety system functional audit and review |
S | SSFI | safety system functional inspection |
S | SSOMI | safety system outage modification inspection |
S | saltwater |
|
S | seawater |
|
S | SLUR | second level undervoltage relay |
S | sec | second(s) |
S | section (capitalize when specific) |
|
S | SSI | security safeguards information |
S | SAM | seismic anchor movement |
S | self-actuated |
|
S | self-contained |
|
S | SCBA | self-contained breathing apparatus |
S | semiannually |
|
S | semimonthly |
|
S | SMM | senior management meeting (NRC) |
S | SW | service water |
S | setpoint |
|
S | shaker-table |
|
S | G | shear modulus |
S | shearwall |
|
S | shelf-life |
|
S | SMAW | shielded metal arc welding |
S | SFM | shift foreman |
S | shop-fabricated |
|
S | shoreline |
|
S | short circuit |
|
S | short-term (adj) |
|
S | SDM | shutdown margin |
S | shutdown (noun or adj), shut down (verb) |
|
S | shutoff (noun or adj), shut off (verb) |
|
S | sic (so, thus) |
|
S | S | siemens (unit of conductance) |
S | sign-off (noun or adj), sign off (verb) |
|
S | single-degree-of-freedom |
|
S | site-specific |
|
S | small bore |
|
S | small-scale (adj) |
|
S | SSI | soil-structure interaction |
S | sole-source (adj) |
|
S | solid-state (adj) |
|
S | SSPS | solid-state protection system |
S | sp gr | specific gravity |
S | SCN | specification change notice |
S | SA | spectral acceleration |
S | SFP | spent fuel pool |
S | SAT | spray additive tank |
S | sq (or2 ) | square |
S | cm2 (or sq cm) | square centimeter |
S | ft2 (or sq ft) | square foot |
S | in.2 (or sq in.) | square inch |
S | km2 | square kilometer |
S | m2 | square meter |
S | m2 /s | square meter per second |
S | mm2 | square millimeter |
S | SRSS | square-root-of-the-sum-of-squares |
S | yd2 (or sq yd) | square yard |
S | ss | stainless steel |
S | std | standard |
S | scf | standard cubic feet |
S | scfh | standard cubic feet per hour |
S | scfm | standard cubic feet per minute |
S | scfs | standard cubic feet per second |
S | std dev | standard deviation |
S | SOP | standard operating procedure |
S | STP | standard temperature and pressure |
S | SGTS | standby gas treatment system |
S | SU | startup (noun or adj), start up (verb) |
S | state-of-the-art (adj) |
|
S | SBO | station blackout |
S | SPCS | steam and power conversion system |
S | SG or S/G | steam generator |
S | SGTR | steam generator tube rupture |
S | steam line |
|
S | St | stokes |
S | SIF | stress intensification factor |
S | strike-slip (adj) |
|
S | SSC | structures, systems, and components |
S | sua sponte (voluntarily) |
|
S | sub rosa (privately, in secret) |
|
S | SMM | subcooling margin monitor |
S | subsection |
|
S | subsurface |
|
S | subsystem |
|
S | subtidal |
|
S | supra id. | supra idem (the same as above) |
S | STP | surveillance test procedure |
S | switchgear |
|
S | switchyard |
|
S | SVT | systems verification test |
T | TCV | temperature control valve |
T | TI | temperature indicator |
T | TAM | thermal anchor movement |
T | TDC | thermal diffusion coefficient |
T | TC | thermocouple |
T | TLD | thermoluminescent dosimeter |
T | TLC | thin-layer chromatography |
T | k | thousand |
T | keV | thousand electron volts |
T | three-step |
|
T | time-history |
|
T | to date |
|
T | ton (spell out) |
|
T | tpd | tons per day |
T | tpy | tons per year |
T | tornado-borne |
|
T | TDH | total dynamic head |
T | TEDE | total effective dose equivalent |
T | TSP | tube support plate |
T | tubesheet |
|
T | TIG | tungsten inert gas (welding process) |
T | TB | turbine building |
T | TBS | turbine bypass system |
T | TDAFW | turbine-driven auxiliary feedwater (pump) |
T | TG | turbine generator |
T | TPS | turbine protection system |
T | turnover |
|
U | UHS | ultimate heat sink |
U | UHF | ultrahigh frequency |
U | UDRPS | ultrasonic data recording and processing system |
U | UT | ultrasonic testing |
U | uv | ultraviolet |
U | underfrequency |
|
U | undersized |
|
U | undervoltage |
|
U | UPS | uninterruptible power system |
U | URI | unresolved item |
U | USI | unresolved safety issue |
U | UEQ | unreviewed environmental question |
U | USQ | unreviewed safety question |
U | upender |
|
U | U | uranium |
V | VBS | vehicle barrier systems |
V | v | velocity |
V | VHF | very high frequency |
V | VLF | very low frequency |
V | VLPM | vibration and loose parts monitor |
V | viz. | videlicet (namely) |
V | V | volt |
V | VA | volt-ampere |
V | VAR | volt amps reactive |
V | V/m | volt per meter |
V | Vac | volts, alternating current |
V | Vdc | volts, direct current |
V | vol | volume |
V | VCT | volume control tank |
V | vpm | volume parts per million |
V | v/v | volume per volume |
V | vol % or v/o | volume percent |
W | whse | warehouse |
W | washout (noun), wash out (verb) |
|
W | WHAT | wastewater holding and treatment |
W | water-cooled |
|
W | W | watt |
W | Wh | watt-hour |
W | Wb | weber |
W | wt | weight |
W | wt % or w/o | weight percent |
W | W/V | weight-to-volume ratio |
W | W/W | weight-to-weight ratio |
W | WPS | welding procedure specification |
W | WL | wind load |
W | wo | work order |
W | workload |
|
W | worst-case (adj), worst case (noun) |
|
Y | yd | yard(s) |
Z | ZPA | zero period acceleration (ground acceleration) |
Z | ZOI | zone of influence |