dictionnaire technique franco_anglais nucleaire
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A ampere
A
A area
a.k.a. also known as
a/d analog-to-digital
A/E architect-engineer
A/ft2
ampere per square foot
a/h air over hydraulic
A/m ampere per meter
a/o atomic percent
a/w accordance with
aa arithmetic average
aA attoampere
AAAS American Association for the Advancement of Science
AABD accident analysis basis document
AAP accident analysis profile
AB auxiliary boiler
ABORT analytical boron reactivity transient
abs absolute
ABT automatic bus transfer
ABWR advanced boiling-water reactor
AC air-cooled
ac alternating current
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ACB air-operated circuit breaker
acc accumulator
acct. account
ACE automatic checkout equipment
ACEC Ateliers de Constructions Electriques de Charleroi
ACF automatic control feature
ACI American Concrete Institute
ACI autoclosure interlock
ACM Association for Computing Machinery
ACP auxiliary control panel
ACR advanced control room
ACRS Advisory Committee on Reactor Safeguards
ACS auxiliary cooling system
ACTS automated calibration test source
Ad ampere demand meter
ADA advanced demo assemblies
adamp adampere, absolute ampere
adc analog-to-digital-converter
ADDS applied digital data system
ADF advanced design features
ADFCS advanced digital feedwater control system
ADMS advanced document management system
ADRC advanced digital reactivity computer
ADS automatic depressurization system
ADV atmospheric dump valve
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AEA Atomic Energy Authority (United Kingdom)
AEB auxiliary equipment building
AEC Atomic Energy Commission
AECL Atomic Energy of Canada Limited
AEG Allgemeine Elektricitaets-Gesellschaft
AEOD analysis of operational data
af audio frequency
AF auxiliary feedwater
AFD axial flux distribution
AFPCS advanced feedpump control system
AFW auxiliary feedwater
AFWP auxiliary feedwater pump
AFWS auxiliary feedwater system
AGDS American Gage Design Standard
AGR advanced gas-cooled reactor
Ah ampere hour
Ahm ampere-hour meter
AHP analytical hierarchical process
AHTG ad hoc technical group
AHU air-handling unit
AI artificial intelligence
AI Atomics International
AICC adiabatic isochoric complete combustion
AIChE American Institute of Chemical Engineers
AIF Atomic Industrial Forum
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AIFB Atomics International Fast Breeder Group
AIME American Institute of Mining and Metallurgical Engineers
AISC American Institute of Steel Construction
AISI American Iron and Steel Institute
AISP advanced isotope separation process
ALARA as low as is reasonably achievable
ALM acoustic leak monitor
ALMS acoustic leak monitoring system
alt altitude
ALWR advanced light water reactor
AM amplitude modulation
AMCR advanced main control room
AME angle-measuring equipment
AMG aging management guideline
AMP aging management program
AMR aging management review
AMS alarm management system
AMSAC ATWS mitigation system actuation circuitry
ANC Advanced Nodal Code (Westinghouse computer code)
ANI Authorized Nuclear Inspector
ANL Argonne National Laboratory
ANS American Nuclear Society
ANSI American National Standards Institute
ANSYS finite element analysis computer code
ANTI-Cs anti-contamination clothing
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antilog antilogarithm
AO abnormal occurrence
AOE automated order entry
AOP abnormal operating procedure
AOR analysis of record
AOT allowed outage time
AOV air-operated valve
AP1000 a larger megawatt version of the AP600
AP600 Advanced Passive 600 MW pressurized water reactor
APA Alpha Phoenix ANC (Westinghouse computer code)
APA American Physics Association
APC American Power Conference
APDA Atomic Power Development Association
APDMS axial power distribution monitoring system
APL Arkansas Power & Light Company
approx approximately (~)
Apr April
APS Arizona Public Service Company
APS auxiliary power supply
apt. apartment
APTS automated plant tagging system
APWR advanced pressurized water reactor
aq aqueous
AR Appropriations Request
ARC Advanced Reactor Corporation
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ARC auxiliary relay cabinet
ARGUS alarm response guidance and usage system
ARI all rods in
ARMS airborne radioactivity monitoring system
ARPI advanced resources development
ARPIS analog rod position indication system
ARQ as required
ART adjusted reference temperature
ARV atmospheric relief valve
As standard atmosphere
ASA American Standards Association
ASAP as soon as possible
ASCE American Society of Civil Engineers
ASCII American Standard Code for Information Interchange
ASE automatic stabilization equipment
ASEC American Standard Elevator Codes
ASHRAE American Society of Heating, Refrigerating, and Air-ConditioningEngineers
ASIC application-specific integrated circuits
ASLAB Atomic Safety and Licensing Appeal Board
ASLAP Atomic Safety and Licensing Appeal Panel
ASLB Atomic Safety and Licensing Board
ASM American Society for Metals
ASME American Society of Mechanical Engineers
ASNDT American Society of Nondestructive Testing
ASP administrative site procedure
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ASP auxiliary shutdown panel
ASQC American Society for Quality Control
ASSS Alternate Safe Shutdown System
ASTG advanced tube support grid
ASTM American Society for Testing and Materials
ASWG American Steel Wire Gage
at wt atomic weight
At ampere turn
at. no. atomic number
at/w atomic hydrogen weld
ata atmospheres absolute
ATC automatic turbine control
atm atmosphere
ATP acceptance test plan
ATP acceptance test procedure
ATP authorized to proceed
ATR advanced test reactor
ATRC Advanced Tooling Readiness Center
ATWS anticipated transient without scram
ATWT anticipated transients without trip
Aug August
AUP Alterungsberwachung Programme (aging management program)
AUTODIN automatic digital network
aux auxiliary
AVB anti-vibration bar
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avdp avoirdupois
Ave. avenue
avg average
AVT all volatile treatment
AWARE advanced alarm management system
AWG American Wire Gage
AWS American Welding Society
awu atom weight unit
AZ Arizona
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Be degree Baum
b bit
B byte
B&P bid and proposal
B&PV boiler & pressure vessel
B&S Brown & Sharp Wire Gage
B&V Black & Veatch
B&W Babcock & Wilcox Co.
B&W Babcock & Wilcox Co.
BA burnable absorber
BAC boric acid concentrator
BAMS break and ADS measurement system
BART Best-Estimate Analysis of Reflood Transients Code
BAST boric acid storage tank
BAT best available technology
BATEA best available technology economically available
bbl barrel
bcc body-centered-cubic
BCD binary coded decimal
BCI balance of conventional island
BCMS boron concentration measurement system
BDAS boron dilution alarm system
BDD baseline design document
BDMS boron dilution mitigation system
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BDS steam generator blowdown system
B Baum
BEC Business Expansion Council
BEF best-estimate flow
BELOCA best estimate loss-of-coolant accident analysis
BFRT containment vessel
BG&E Baltimore Gas & Electric
Bh Brinell hardness
BHEP basic human error probability
BHN Brinell hardness number
bhp brake horsepower
bhp-hr brake horsepower hour
BHSP basic human success probability
BISI bypass & inoperable status indication
BIT boron injection tank
bklt booklet
BLCS base line control system
bldg building
BLHL broken loop hot leg
BLPB branch line pipe break
Blvd boulevard
BM bill of material
BMI Batelle Memorial Institute
BMI bottom-mounted instrumentation
BNCS Board on Nuclear Codes and Standards
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BNES British Nuclear Energy Society
BNFL British Nuclear Fuels plc
BNI balance of nuclear island
BNL Brookhaven National Laboratories
BNWL Battelle Northwest Laboratory
BOC beginning-of-cycle
BOCREC bottom of core recovery
BOL beginning-of-life
BOP balance-of-plant
BOR boronometer
bp boiling point
BP burnable poison
BPA burnable poison absorber
BPRA burnable poison rod assembly
bps bit per second
BPV ASME Boiler and Pressure Vessel Code
BPVC ASME Boiler & Pressure Vessel Code
Bq becquerel
Br Std British Standard
BRS boron recycle system
BS building and structure
BSI British Standards Institution
BT broached tube
BTFA benzoyltrifluoroacetone
BTI bypass testing instrumentation
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BTP branch technical position
BTR boron thermal regeneration
BTRS boron thermal regeneration system
Btu British thermal unit
Btu/hr-ft2
British thermal units per hour per square foot
Btu/hr-ft-F British thermal units per hour per foot per degree Fahrenheit, orBritish thermal units per hour per square foot per degreeFahrenheit per foot
Bu burnup
BVPC Boiler & Pressure Vessel Code
BWC bat wing coldleg
BWE Babcock & Wicox, Espana
BWG Birmingham Wire Gage
BWH bat wing hotleg
BWR boiling water reactor
BWR90+ advanced boiling water reactor design developed by (W) Atom and
Finnish utility TVOBWROG Boiling Water Reactor Owners Group
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C degree Celsius
C degree Centigrade
c centi (10-2)
C coulomb
c cycle
C heat capacity
C hundred
c.m. center of massC/kg coulomb per kilogram
CA California
CAA Clean Air Act
CAD computer-aided design
CAE computer-aided engineering
CAGR compound annual gross rateCAI computer-aided instruction
cal calorie
cal/g calories per gram
cal/g-C calories per gram per degree Centigrade
cal/sec-cm2 calories per second per square centimeter
cal/sec-cm-C calories per second per centimeter per degree Centigrade, orcalories per second per square centimeter per degreeCentigrade per centimeter
calc calculated
CALS computer-aided acquisition and logic support
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CAM computer-aided manufacturing
CAOC constant axial offset control
CAP600 600 MV reactor combining the work of W and China NationalNuclear Corp.
CAPA commercial atomic power activities
CAPs Corrective Action Process
CAR Corrective Action Request
CARM cost accumulation reporting management
CAS codes and standards
CAS compressed and instrument air system
CASE computer-assisted software engineering
CASS cast austenitic stainless steel
CAT chemical addition tank
CATD Contract & Technical Data Document
CAV cumulative absolute velocity
CB containment building
CB control board
CB&I Chicago Bridge & Iron
cc carbon copy
CCB configuration control board
CCDF complementary cumulative distribution function
CCF counter-current flooding
CCFL counter-current flow limitation
CCFP conditional containment failure probability
CCI core-concrete interaction
CCP centrifugal charging pump
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CCR central control room
CCS component control system
CCS component cooling water system
CCTF cylindrical core test facility
CCTV closed circuit television
CCW component cooling water
CCWS component cooling water system
cd candela
CD compact disk
CD component design
CD cooldown
CD corrective due to degraded condition
CDA core disruptive accident
CDF core damage frequency
CDM certified design material
CD-R compact disc-recordable
CD-ROM compact disk-read only memory
CDS condensate system
CE Combustion Engineering
CEA Commissariat a lEnergie Atomique (France)
CEA control element assembly
CEAC control element assembly calculation
CEDM control element drive mechanism
CEDMCS control element drive mechanism control system
CEGB Central Electricity Generating Board (United Kingdom)
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CEMS corrosion erosion monitoring system
CENPII CE Nuclear Power International Incorporated
CEO chief executive officer
CEOG CE Owners Group
CERN Centre Europen pour la Rcherche Nucleaire
CESCE Compania Espanola de Seguros a la Exportacion
CESSAR Combustion Engineering Standard Safety Analysis Report
CET containment event tree
CF capacity factor
CF corrective due to failure
CFC certified for construction
CFCU containment for coil unit
CFE contractor-furnished equipment
cfm cubic foot per minute
CFMS critical function monitoring system
CFO chief financial officer
CFP contractor-furnished property
CFR Code of Federal Regulations
CFR Code of Federal Regulations (US)
CFW condensate and feedwater
CGE Compagnie Generale dElectricite (France)
CGI common gateway interface
CGNPC China Guangdong Nuclear Power Holding Company, Ltd.
cgs centimeter-gram-second
CHAMPS chemical area manufacturing process system
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CH/SI charging/safety injection
CHCS containment hydrogen control system
CHF critical heat flux
CHIEF chemical emergency planning geographic information system
CHT cold hydro test
CI conventional island
Ci curie
CIM computer-integrated manufacturing
CIP cost improvement program
CIV combined intermediate valves
CIV containment isolation valve
CL cold leg
CLB current licensing basis
CLCV cold-leg check valve
CLEE (Committee on) Cyclic Life and Environmental Effects
CLIRA closed loop in reactor assembly
CLOFA complete loss-of-flow accident
CLP cask loading pit
cm centimeter
cm chemical milling
CM corrective maintenance
Cm heat capacity per mole
cm2
square centimeter
cm3
cubic centimeter
CMT core makeup tank
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CNFD Commercial Nuclear Fuel Division
CNNC China National Nuclear Corporation
CNRB Company Nuclear Review Board
CNS containment system
CO Colorado
coeff coefficient
COIN construction service
COL Combined Operating License
COLR Core Operating Limit Report
COLSS core operating limit supervisory system
COMPRO Westinghouse computerized procedure
COMS cold over-pressure mitigation system
COMSAT communications satellite
cont. continued
COO chief operating officer
COPS chemical operating procedures
COREN Combustili per Reattori Nucleari, SPA (Italy)
corp. corporation
CORS catalytic oxygen removal system
cos cosine
COS Cray OS
cot cotangent
counts/min counts per minute
counts/sec counts per second
cP centipoise
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CP chemically pure
CPACS Coded Pulse Anticutter System
CPC core protection calculator
CPI Cost Price Improvement
CPM critical path method
cpm cycles per minute
cps counts per second
cpse counterpoise
CPSES Commanche Peak Steam Electric System
CQ commercial quality
CQAR Contract Quality Assurance Requirements
CQD Code Qualification Document
CR circulation ratio
CRCTA composite reactor component test assembly
CRDD control rod disconnect driveline
CRDM control rod drive mechanism
CRDR control room design review
CRDS control rod drive shaft
CRGR Committee for Review of Generic Requirements
crit critical
CRLF carriage-return linefeed character
CRS control rod system
CRT cathode ray tube
CRT core reflood tank
CS Commercial Standard
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CS core support (structures)
CSA channel statistical allowance
CSAU code scaling, applicability, and uncertainty
CSB core support barrel
CSD computer software development (MHI)
CSF critical safety function procedure
CSI cumulative susceptibility index
CSN Nuclear Safety Council (Spain)
CSOC Customer Support & Operations Center (Computer Help Desk)
CSS containment spray system
CSST containment spray storage tank
cSt centistoke
CST condensate storage tank
CT computer tomography
CT Connecticut
CTL complementary transistor logic
CTM cost time management
CTR controlled thermonuclear reaction
CTSF centralized temporary storage facility
cu cubic
CUF cumulative usage factor
CV check valve
CVAP core vibration assessment program
CVCS chemical and volume control system
CVDL compatibility verification data list
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CVS chemical and volume control system
CVTR Carolinas-Virginia tube reactor
CW circulating water
CW cold-worked
cwfm continuous wave frequency modulated
CWP cask washdown pit
cwp circulating water pump
cwt hundredweight
CY calendar year
CYAPC Connecticut Yankee Atomic Power Company
CYW City Water System
CZ Canal Zone
CZP cold zero power
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degree (temperature)
D darcy
d deci (10-1)
D deuterium (heavy hydrogen)
D&M diagnostic and monitoring
d/a digital-to-analog
D2O heavy water
da deka (10
1
)DAC design acceptance criteria
dac digital-to-analog converter
DAF document application form
dag dekagram
dam dekameter
DART defense application resource teamDAS data acquisition system
DAS diverse actuation system
dB decibel
DB design basis
DBA design basis accident
DBD design basis documentationDBE design basis earthquake
dbhp drawbar horsepower
dbl act double acting
dbl double
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dblf double face
dbm decibel referred to 1 milliwatt
dbm decibels referred to 1 milliwatt in 600 ohms
DBMS database management system
dbrn decibels above reference noise
dbv decibels referred to 1 volt
DBVP Design Baseline & Verification Program
dbw decibel referred to 1 watt
DC design change
DC Design Commitment
dc direct current
DC District of Columbia
DCH direct containment heating
DCP design change proposal
DCTL direct-coupled transistor logic
dda digital differential analyzer
DDCS double-delta channel seal
DDE dynamic data exchange
DDI drawing data input form
DDS data display and processing system
DDS design drafting spec
DDT detonation transition
DE Delaware
Dec December
dec decimal
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decal decalcomania
DECLG double-ended cold-leg guillotine
deg degree (angle)
DEG double-ended guillotine
DEHL double-ended hotleg
DEHM digital electro-hydraulic master control system
DEISS Design Engineering Interface Support Services
Del Delaware
Delta T temperature change
DEPS double-ended pump suction
dept department
DER double-ended rupture
DESFAS digital engineered safety features actuation system
dev eql deviation equalizer
dev development
dev deviation
DF decontamination factor
DF differential flow
DFBN debris filter bottom nozzle
DFFB dispersed flow film boiling
DFMS digital flux mapping system
dg decigram
DG diesel generator
DGR Division General Research
DHEC South Carolina Department of Health and Environmental Control
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DHG data highway gateway
dhp developed horsepower
DHR decay heat removal
DHRM decay heat removal monitoring
dia diameter
diag diagonal
diag diagram
diagr diagrammatic
DIAS discrete indication and alarm system
diff different
diff differential
dim. dimension
dio diode
dis/sec disintegrations per second
DISS design information schedule summary
distr distribute
distr distribution
distr distributor
div divergence
dl deciliter
dm decimeter
DM design modification
DM Deutsche mark
dm2
square decimeter
dmc digital microcircuit
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DMD Document Management Directory
dmg damage
DMIMS digital metal impact monitoring system
DMIMS digital metal impact monitoring system
dms digital microcircuit
DN deviation notice
DNB departure from nucleate boiling
DNBR departure from nucleate boiling ratio
DNDR deviation (defect) notice-disposition request
DO data out
doc document
DOD Department of Defense
DOE Department of Energy
DORO Division of Regulatory Operations
DOS Department of State
DOS Division of Responsibility
DOS standby diesel and auxiliary boiler fuel oil system
DOT Department of Transportation
doz dozen
dp differential pressure
dpa displacement per atom
DPC Document Production Center
DPCS dual-unit PCs
DPH diamond hardness number
dph diamond-pyramid hardness
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dplr Doppler
dplxr duplexer
DPM decades per minute
DPPS digital plant protection system
dpr design power ratio
dpr double pulse range
DPRI digital rod position indicator
DPRK Democratic Peoples Republic of Korea (North Korea)
DPS decontamination process system
DPS disintegrations per second
DPS diverse protection system
dpst sw double-pole single-throw switch
dpst double pole single throw
DPT differential pressure transmitter
DPU distributed processing unit
DR design requirements
DR deviation report
dr dram
D-RAP Design Reliability Assurance Program
DRL Division of Reactor Licensing (NRC)
DRMS digital radiation monitoring system
DRPI digital rod position indication system
DRR document release record
DRS Division of Reactor Safeguards (NRC)
DRTL diode resistor transistor logic
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DRWM dynamic rod worth measurement
DS design specification
DS documentation specification
ds&r data storage and retrieval
dsbl disable
DSER draft safety evaluation report
DSF document submittal form
D-Spec design specification
dspm double strokes per minute
DSR drop status record
DSS diverse scram system
dstl distill
dstlt distillate
DSU disk storage unit
dt decay time
dt differential temperature
dta differential thermal analysis
DTD document type definition
DTL diode transistor logic
DTP desktop publishing
DTS demineralized water treatment system
dtvm differential thermocouple voltmeter
DVI direct vessel injection
dvm digital voltmeter
dvtl dovetail
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DW dead weight
dw distilled water
dw double weight
dwg drawing
dwl dominant wave length
dwl dowel
DWS demineralized water transfer and storage system
dwt deadweight
dwt pennyweight
dy/cm2 dyne per square centimeter
dyb dynamic braking
dyhr dehydrator
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E East
e elementary charge
E emitter (electron device)
e exponential
e&i equip and install
e.g. for example (exempli gratia)
ea each
EAP Employee Assistance Program
eax electronic automatic exchange
EBITDA earnings before interest, taxes, depreciation, and amortization
EBS emergency boration system
EC Energy Center
EC export controls
ECA Export Credit Agency
ECC emergency core cooling
ECC Energy Center Complex
ECC error correction code
ECCS emergency core cooling system
ecd estimated completion date
ecdc electrochemical diffused collector
ECEPDI East China Electric Power Design Institute
ECL emitter-coupled logic
ECN engineering change notice
eco electron-coupled oscillator
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ecp engineering change proposal
ECR emergency control room
ecr engineering change request
ECS extended character set
ECS main ac power system
ECT eddy current testing
ed edition
ED Emergency Director
EDEP Employee Development through Education Policy
EdF Electricit de France
edgw edgewise
EDM electrical discharge machining
EDP electronic data processing
edr equivalent direct radiation
EDS Non-Class 1E dc and uninterruptible power supply system
edt electrical discharge tube
educ education
EEI Edison Electric Institute
ef emitter follower
EFPH effective full-power hours
EFS communication system
EFWS emergency feedwater system
EGCR experimental gas-cooled reactor
egd electrogasdynamics
EGS grounding and lightning protection system
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egt exhaust gas temperature
ehf end half
ehf extremely high frequency
ehp effective horsepower
ehp electric horsepower
EHR electric hydrogen recombiner
ehw extreme high water
EIA Environmental Impact Assessment
EIS Environmental Impact Study
el elevation
elev elevate
elex electronics
elf. extremely low frequency
elhyd electrohydraulic
elig eligible
ELS plant lighting system (SPWR)
emf electromotive force
emi electromagnetic interference
ENDESA Empresa Nacional de Electricidad, S.A.
ENEL Ente Nazionale per LEnergia Elettrica
eng rm engine room
eng engine
eng engineer(ing)
Eng English
ENSA Equipos Nucleares, S.A.
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ensi equivalent-noise-sideband input
ENUSA Empresa Nacional Die Uranio, S.A.
eoc edge of cutter
eod elements of data
EOE estimate of effort
EOF Emergency Operations Facility
EOL end-of-life
eolm electro-optical light modulator
EOP emergency operating procedure
eop end of part
ep electrically polarized (relay)
Ep potential energy
EP1000 European Passive Plant (based on the AP600 and AP1000)
EPA Environmental Protection Agency
epd electric power distribution
EPDM ethylene propylene diene terpolymer
EPP European Passive Plant
epr electron paramagnetic resonance
epr exhaust pressure ratio
EPRI Electric Power Research Institute
ept external pipe thread
epu electrical power unit
epwr emergency power
EQ environmental qualification
EQ environmentally qualified
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EQ equipment qualification
Eq. Equation
ERD electronic reference document
ERDA Energy Research and Development Agency
ERDS emergency response data system
ERF emergency response facility
ERG emergency response guideline
ern engineering release notice
ES Energy Systems
ES equipment supply
ES NSD Engineering Services
ES&T CNFD Engineering Services & Technology
ESD electrostatic discharge
ESF emergency safety features
ESF engineered safety feature
ESFAC engineered safety feature actuation cabinet
ESFAS engineering safety feature actuation system
eshp equivalent shaft horsepower
E-Spec Equipment Specification
E-Spec equipment specification
esr electron spin resonance
esr equivalent series resistance
ess electronic switching system
ESS Engineering Support Service (KOPEC conract)
est estimate(d)
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ESWGR emergency switchgear rooms
et al and others (et alii)
ETAPS electronic training and procedure system
etc. and so forth, and the like (et cetera)
ETCG elapsed-time code generator
ets endless tangent screw
EU European Union
EUR European Utility Requirements
eV electronvolt
evm electronic voltmeter
evom electronic voltammeter
EVP evaporator
EW equivalent weight
ewo engineering work order
Eximbank Export-Import Bank of the United States
expo experimental order
ext extension
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F degree Fahrenheit
F farad
f femto (10-15)
F fermi
f force
F franc
f frequency
f fuelF/D fixed detector
F/L full length
F/T flow & temperature
FA ratio fuel-air ratio
fa final assembly
fa free apertureFA fuel assembly
fac field accelerator
FAC flow accelerated corrosion
FACT fully automatic compiler-translator
fao finish all over
FAR Field Action Requestfax facsimile
FBFC France-Belgium Fuel Company
FBR fast breeder reactor
fc foot candle
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fcc face-centered cubic
FCG fatigue crack growth
FCLD functional control logic diagrams
fct filament center tap
FCV flow control valve
fdb forced draft blower
fdbk feedback
FDDI fiber-distributed data interface
FDI fuel duty index
fdm frequency division multiplex
fdp full dog point
FDR Field Deficiency Report
FDR Field Deviation Report
fdw feedwater
FE field elements
Fe iron
FEA Federal Energy Administration
Feb February
Fed Federal
FES field-emission spectroscopy
FET field-effect transistor
FF forcing function
ffd field forcing (decreasing)
ffi field forcing (increasing)
FHM fuel-handling machine
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fhp fractional horsepower
FHS fuel handling system
FHS fuel-handling system (fuel-handling and refueling system)
FID fixed in-core detector
FIDAS fixed incore detector amplifier system
fig. figure
figs. figures
fip fuel injection pump
fissions/cm3
fissions per cubic centimeter
fissions/sec fissions per second
FIV feedwater isolation valve
FIV flow induced vibration
FL Florida
flg flange
FM frequency modulation
fm titanium tetrachloride
FMC fissile material containers
FMEA failure modes and effects analysis
FMECA failure modes, effects, and criticality analysis
FMR field material request
FOAKE first-of-a-kind engineering
FOSAR foreign object search and retrieval
FOTA full open test assemblies
FP fire protection
FPC Federal Power Commission
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ft-L footLambert
ft-lb foot pound
FTP file transfer protocol
FTS fuel transfer system
ft-sec foot-second
FTZ foreign trade zone
FUDDL fuel design data list
F-V Fussell-Vesely
fw feedwater
FW formula weight
FWCS feedwater control systems
fwdct fresh water drain collecting
FWI feedwater isolation
fwp feedwater pump
FWRV feedwater regulations valve
FWS feedwater system (main and startup feedwater system)
FY fiscal year
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G gauss
G giga (109)
g gram
g gravity (force)
G&A general & administrative (expense)
g/cm3
gram per cubic centimeter
GA general arrangement (drawing)
GA Georgia
gal gallon
GAO Government Accounting Office
g-atom gram atom
Gb gilbert
Gc gigacycle
Gc/sec gigacycle per second
gcal gram-calorie
GCFBR gas-cooled fast breeder reactor
gcmps gyrocompass
gcn gage code number
GCR gas-cooled reactor
GDC general design criteria
GDT gas decay tank
GE General Electric Company
ged gasoline engine driven
GESSAR General Electric Standard Safety Analysis Report
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Gev gigaelectron volt
GFC generic flow control
gfe government-furnished equipment
GFI group format identifier
GHz gigahertz
GIA Government & International Affairs
GIF graphics interchange format
GLRP General License Renewal Program
GMT Greenwich mean time
GPa gigaPascal
gph gallons per hour
gpm gallons per minute
GPS global positioning system
GQA graded quality assurance
gr gross (12 dozen)
grad gradient
GRCA gray rod cluster assembly
grd ground
GRI Gas Research Institute
GRWP General Radioactive Waste Plan
GS gas stripper
GSI generic safety issue
GSRMS gas stripper radiation monitoring system
GSS gamma scintillation system
gswr galvanized steel wire rope
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GT guide tube
GTAW gas tungsten arc welding
GTCC greater than class-C waste
GTR generic technical report
GU Guam
GUI graphical user interface
GV governor valve
gva graphic kilovolt-ampere meter
GW gigawatt
GWh gigawatt per hour
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h quarter-hard
h half-hard
H enthalpy
h hecto (102)
h height
H henry
H/L hotleg
H2 hydrogenH3 tritium
HA hardware address
ha hectare
HA hot assembly
HACTS head area cable tray system
HAJI Hankook Jungsoo Industrial Co., Ltd.HANJUNG Korea Heavy Industries & Construction Co., Ltd.
HAZ heat-affected zone
HAZMAT hazordous materials
HB Brinell hardness number
hc hexachlorethane
hc high carbonHC hot channel
HCDA hypothetical core disruptive accident
HCLPF high-confidence, low probability of failure
hcs high-carbon steel
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HCV hand control valve
hd cr hard chromium
hdbk handbook
HDH hydride/dehydride
HDLC high-level data link control
HEC header checksum
HEPA high efficiency particulate air (filter)
HEX heat exchangers
hf high frequency
HF human factors
HFE human factors engineering
HFM heat flux meter
hfo high-frequency oscillator
HFP hot full power
HHI Hyundai Heavy Industries
HHSI high-head safety injection
hi fi high fidelity
HI Hawaii
HIC high-integrity containment
HICO Hyosung Industrie Company, Ltd.
HICO Hyosung Industrie Company, Ltd.
HJTC heated junction thermocouple
HL hot leg
HLW high-level waste
hm hectometer
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hm2
square hectometer
HMO Health Maintenance Organization
HODSP high-order domain specific port
HP high pressure
hp horsepower
hp-h horsepower-hour
HPI high-pressure injection
HPME high-pressure melt injection
HPNPP high-priority next port pointer
HPSI high-pressure safety injection
HPTHT high-priority token hold timer
hr hour
HR Human Resources
HRA human reliability analysis
HRE homogeneous reactor experiment
hrs hours
HSI human-system interface
HSR Historian WEStation
HSSC high safety significant component
HT heat transfer
HTGCBR high temperature gas-cooled breeder reactor
HTGR high-temperature gas-cooled reactor
HTML Hypertext Markup Language
htnsl high tensile
HTP high-thermal performance
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HTR high temperature reactor
HTX heat exchanger
HU heatup
HVAC heating, ventilation, and air conditioning
HWBLWR heavy water moderated boiling light water reactor
HWOCR heavy water moderated organic cooled reactor
HWR heavy water reactor
hwy highway
HX heat exchanger
Hyd hydraulic
hydro hydrostatic
Hz hertz (1 cps)
HZP hot no load condition
HZP hot zero power
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%impd percent impedance
i&c installation and checkout
I&C instrumentation and control
i&m installation and maintenance
i&o inlet and outlet
i.e. that is (id est)
i/o input-output
IA international angstrom
IA Iowa
IACS International Annealed Copper Standard
IAEA International Atomic Energy Agency
IAEA International Atomic Energy Agency
iagc instantaneous automatic gain control
IASCC irradiation-assisted stress corrosion cracking
IAT income after taxes
iat indicated air temperature
iavc instantaneous automatic volume control
ibid. in the same place
IBT income before taxes
IC integrated circuit
IC Incident Commander
ICC integrated control cabinet
ICCMS inadequate core cooling monitoring system
ICD initial core design
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ICI in-core instrumentation
ICRP International Commission on Radiological Protection
ICRR inverse count rate ratio
ICT International Critical Tables
icw interrupted continuous wave
ID Idaho
ID identification
id inside diameter
IDC interest during construction
IDP integrated data processing
IDS Class 1E dc and uninterruptible power supply system
IEEE Institute of Electrical and Electronics Engineers
IFBA Rods integral fuel burnable absorber
IFM intermediate flow mixer
IGA intergranular attack
IGFET insulated-gate field-effect transistor
IGS Interactive graphic simulator
ihp indicated horsepower
IHP integrated head package
IHST integrated head storage tank
IHX intermediate heat exchanger
IIF internals indexing fixture
IIS incore instrumentation system
IL Illinois
illus illustrate
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ILRG internals lift rig
ILRT integrated leak rate test
imc instrument meteorological condition
impd impedance
IMQP Integrated Manufacturing Quality Plan
IN Indiana
in. H2O inch of water (pressure)
in. Hg inch of mercury
in. lb inch-pound
in. inch
in./hr inch per hour
in./min inches per minute
in.2
square inch
in.3
cubic inch
inc. incorporated
ind indication
INDE industry and defense
info information
INITEC Empresa Nacional de Ingeneria y Technologia, S.A.
inj inject(ion)
INPO Institute of Nuclear Power Operations
insp inspection
int interior or internal
intl international
intro introduction
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IO international operations
IPA integrated plant assessment
IPB illustrated parts breakdown
IPC integrated protection cabinet
IPCEA Insulated Power Cable Engineers Association
IPCR integrated protection cabinet rooms
IPE individual plant examination
ipm interruptors per minute
IPMO Integrated Project Management Organization
IPP inspection point plan
ips inch per second
IPS integrate project schedule
ips interruptions per second
IR Industry Report
IR interface requirements
IRC inside reactor containment
IRI incomplete rod insertion
IRR internal rate of return
IRWST in-containment refueling water storage tank
ISA Instrument Society of America
ISA integrated safety assessment
ISBN International Standard Book Number
ISE Integrated Safety Evaluation
ISFSI independent spent-fuel storage installation
ISI in-service inspection
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ISO International Standards Organization
iso isolation
IST in-service testing
IST International Standard Thread
ITA inspections, tests, analyses
ITAAC inspection, tests, analyses, and acceptance criteria
itae integrated time and absolute error
itlk interlock
ITTC Former acronym for Westinghouse 286 site
IVMS internal vibration monitoring system
IVSWS isolation valve seal water system
IWD interconnect wiring diagrams
IX plant ion exchangers
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J joule
j&p joists and planks
J/(kgK) joule per kilogram kelvin
J/K joule per kelvin
J/kg joule per kilogram
J/m2 joule per square meter
J/m3 joule per cubic meter
JAERI Japan Atomic Energy Research InstituteJan January
JAPC Japan Atomic Power Company
JAPEIC Japan Atomic Power Engineering and Inspection Corporation
jato jet-assisted takeoff
JCAE Joint Committee on Atomic Energy
jct junctionJEXIM Export-Import Bank of Japan
jkt jacket
JOA job order activity
jpft joiner pilaster fume tight
jpnt joiner pilaster nontight
jr. juniorJSD joint system design
jtsn jettison
just. justification
jw jacket water
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JW joint work
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K kelvin
K carat
k kilo
k kip (1000 lbs.)
k thousand (electrical quantity)
k kilohm
Km/W kelvin meter per watt
Km/W kelvin square meter per watt
KAERI Korea Atomic Energy Research Institute
KAFD Korean advanced fuel design
KAIF Korean Atomic Industrial Forum
kB kilobyte
kc kilocycle
kcal kilocalorie
kcal/mole kilocalories per mole
kd kiln dried
ke kinetic energy
KEDO Korean Peninsula Energy Development Organization
KEPCO Korea Electric Power Corporation
KEPRI Korea Electric Power Research Institute
keV kiloelectron volt
keV thousand electron volts
kg kilogram
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kgm kilogram meter
kgm2
kilogram square meter
kg/(Pasm) kilogram per Pascal second meter
kg/(Pasm2) kilogram per Pascal second square meter
kg/J kilogram per joule
kg/m kilogram per meter
kg/m2
kilogram per square meter
kg/m3
kilogram per cubic meter
kg/s kilogram per second
kgf kilogram-force
KHIC Korea Heavy Industries & Construction Co., Ltd. (HANJUNG)
kHz kilocycle per second (kilohertz)
kHz kilohertz
kine kinescope
KINS Korea Institute Nuclear Society
kip thousand pounds
kip-ft thousand foot pounds
kJ kilojoule
kl kiloliter
klbf kilopound-force
km kilometer
kM kilomole
km/h kilometer per hour
km/s kilometer per second
km2
square kilometer
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kmc kilo-megacycles (109)
kN kilonewton
KNDG Korea Nuclear Design Group
KNFC Korea Nuclear Fuel Company
KNGR Korea Next Generation Reactor, 1400 Mwe in size
ko kickoff (relay)
k-ohm thousand ohms
KOPEC Korea Power Engineering Company, Inc.
kPa kiloPascal
KPS Korea Power Plant Services Company, Ltd.
KS Kansas
ksi kips per square inch
KSNP Korea Plant Service & Engineering Company, Inc.
kt kiloton
kV kilovolt
kVA kilovolt-ampere
kVAh kilovolt-ampere hour
kVAhm kilovolt-ampere hour meter
kVAm kilovolt-ampere meter
kVAr reactive kilovolt-ampere
kVp kilovolt peak
kW kilowatt
kWe kilowatt electrical
kWh kilowatt-hour
kWhm kilowatt-hour meter
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kWr kilowatts reactive
KY Kentucky
kybd keyboard
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lb/bhp hr pounds per brake horsepower hours
lb/ft pound per foot
LBB leak before break
LBD licensing basis document
lbf pound of force
lb-ft moments or torque
lb-ft pound-foot
lb-in. pound inch
LBLOCA large-break LOCA
lbp length between perpendiculars
lb-wt pound-weight
LC inductance-capacitance
lc lower case
lcg longitudinal position of center of gravity
LCL lower control limit
lcm least common multiple
LCO limiting conditions of operation
lcp left-circular polarization
LCR inductance-capacitance-resistance
lcsw latch checking switch
lct long calcined ton
ldb light distribution box
ldc line-drop compensator
ldt long dry ton
LED light-emitting diode
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lej longitudinal expansion joint
LER License Event Report
LERF large, early release frequency
lf low frequency
lfo low-frequency oscillator
LHSI low-head safety injection
lic license
LIC licensing
LIC linear integrated circuit
lin ft linear foot
litho lithograph
ll low level
LL low-low (alarm)
LLL low-level logic
LLLP low-leakage loading pattern
LLR large load rejection
LLRT lead leak rate test
LLRT local leak rate testing
llt long lead time
LLW low-level waste
lm lumen
LMD Large Motor Division
LMFBR liquid-metal fast breeder reactor
ln logarithm (natural, base e)
LO low (alarm)
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loamp logarithmic amplifier
LOCA loss-of-coolant accident
LOFA loss-of-flow accident
LOFT loss-of-fluid test
log logarithm
lol length of lead (actual)
LOLT loss-of-load transient
LOMF loss-of-main feedwater
long. longitude
LOOP loss-of-offsite-power
los line of sight
lp low point
LP low power
LP low pressure
LPA lower plenum flow anomaly
LPCI low-pressure core injection
lpcw long pulse continual wave
LPMS loose parts monitoring system
lpo low power output
LPP large passive plant
LPSI low-pressure safety injection
lpw lumen per watt
LPZ low-population zone
LR license renewal
lr load ratio
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LRA license renewal application
LRB licensing review basis
lrc load ratio control
LRF large release frequency
LRPS locked rotor protection system
LSBR large seed blanket reactor
LSD log-normal standard deviation
LSHI large-scale hybrid integration
LSI large-scale integration
LSSC low safety-significant component
LTA logic task analysis
LTC long-term cooling
LTCC long-term core cooling
ltdn letdown
LTOP(S) low temperature overpressure protection (system)
lv low voltage
LVDT linear voltage differential transformer
lvp low voltage protection
LWBR light water breeder reactor
LWR light water reactor
lx lux
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m bending moment
M gram molecular weight (mole)
m maganflux
M mass
M mega (106)
m meter
m mile
m milli (10
-3
)
M molar (with number)
M thousand
M&E material and equipment
m&r maintenance and repair
M&R manufacturing and repair
m&s maintenance and supply
M megohm
m millimicron
m milliohm
m3
cubic micron
M/CATS milestone cost analysis tracking system
M/D movable detector
m/o mole percent
m/s meter per second
m/s2
meter per second squared
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m2
square meter
m2/s square meter per second
m3
cubic meter
m3/J cubic meter per joule
m3/s cubic meter per second
m4
meter to the fourth power
MA Massachusetts
mA milliampere
m milliangstrom
MA multiple access
MAAC Mid-Atlantic Area Coordination Group
MAAP material access authorization program
MAC medium access control
MAD maintenance, assembly, and disassembly
MAELU Mutual Atomic Energy Liability Underwriters
magamp magnetic amplifier
magmod magnetic modulator
mag-thor magnesium-thorium
male multiaperure logic element
MAN metropolitan area network
MAP manufacturing automation protocol
MAP methodology assessment program
MAPCON maintenance and planning control
MAPP Mid-Continent Area Power Pool
MAQP manufacturing and quality plan
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MAR Management Assessment Review
Mar March
MARAD Maritime Administration
mars multiaperture reluctance switch
maser microwave amplification by stimulated emission of radiation
math mathematical
math mathematics
max maximum
MB megabyte
mb millibarn
mbd motor belt drive
MBP monobutyl phosphate
Mbtu million British thermal units
MC manipulator crane
Mc megacycle
mc millicycle
mc&g mapping, charting, and geodetic
MCB main control board
MCBD measurement channel block diagrams
MCC motor control center
MCCB molded-case circuit breaker
mcf thousand cubic feet
mcm magnetic core memory
mcm thousand circular mils
MCO moisture carryover
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MCP main control panel
MCP master control panel
MCR main control room
MCS material control system
MCT material compatibility test
MD Maryland
mD millidarcy
MDAFWP motor-driven auxiliary feedwater pump
MDEFWP motor-driven emergency feedwater pump
mdf main distributing frame
MDF mechanical design flow
MDL minimum detectable limit
mdm maximum design meter
MDM metal disintegration machining
mdm metal-dielectric-metal (filter)
mdn median
mds minimum discernible signal
ME Maine
MEA Materials Engineering Associates
MED microelectronic device
megohm million ohms
megv million volts
MEL master equipment list
MEL material and equipment log (computer programming)
MELCO Mitsubishi Electric Company
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memo memorandum
mep mean effective pressure
MERITS methodically engineered, restructured, and improvedtechnicalspecifications
MeV megaelectronvolt
MeV million electron volts
mezz mezzanine
mf main feed
mf medium frequency
MFES mobile fuel evaluation system
mfg spec manufacturing specification
mfg manufacturing
MFIS main feedwater isolation signal
MFIV main feedwater isolation valve
MFN most favored nation
MFP main feedwater pump
MFW main feedwater
MFWLB main feedwater line break
MFWV main feedwater valve
mG milligauss
mg milligram
MG motor generator
mgr manager
mgt management
mH millihenry
MHA maximum hypothetical accident
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mhcp mean horizontal candlepower
mhd magnetohydrodynamic
MHE materials handling equipment
mhf medium high frequency
MHI Mitsubishi Heavy Industries, Ltd.
MHR Monthly Highlight Report
MHS mechanical handling system (SPWR)
MHTGR modular high-temperature gas-cooled reactor
MHTS main heat transport system
MHz megahertz
mHz millihertz
MI Michigan
mi mile
MI mineral insulated (cables)
MIC microbiologically influenced corrosion
MIC monolithic integrated circuit
micr magnetic ink character recognition
MIE Ministry of Industry and Energy (Spain)
mike microphone
MILSPEC military specification
MIL-STD military standard (book)
MIME Multipurpose Internet Mail Extensions
min minimum
min minute
MIS Management Information Systems
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misc miscellaneous
MIT Massachusetts Institute of Technology
MITI Ministry of International Trade and Industry (Japan)
MJ megajoule
m-kg meter-kilogram
ml millilambert
ml milliliter
mldg moulding
MLW mean low water
m-m man-month
mm millimeter
mm2
square millimeter
mm3
cubic millimeter
MMF minimum measured flow
MMI man-machine interface
MMIS man-machine interface system
MMPA Magnetic Materials Producers Association
MMS multiple-systems related
MMSC medium maintenance-significant component
MN Minnesota
MNF Mitsubishi Nuclear Fuel
mnfm mainframe
MO Missouri
MOA memorandum/memoranda of agreement
MOC middle of cycle
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MOCIE Ministry of Commerce, Industry & Energy
mol wt molecular weight
MOL middle-of-life
moly molybdenum
MOP maintenance optimization process
MOPs modified operating procedures
MOPS manufacturing operating procedures
MOR monthly operations report
MOS metal-oxide semiconductor
MOSFET metal-oxide semiconductor field-effects transistor
MOST metal-oxide semiconductor transistor
MOST Ministry of Science and Technology
MOTA materials open test assemblies
MOU memorandum/memoranda of understanding
MOV motor-operated valve
MOVATS motor-operated valve analysis and test system
MOX mixed oxide
MOXF mixed oxide fuel
MP maintenance procedure
MPa megapascal
MPC maximum permissible concentration
MPC multi-purpose canister
mpe maximum permissible exposure
MPEG Motion Picture Experts Group
MPFF maintenance-preventable functional failure
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mpg miles per gallon
mph miles per hour
mphps miles per hour per second
mpi magnetic particle inspection
MPR molten plutonium reactor
MPS monitoring and protection system
MPX multiplexer
MR Maintenance Rule
MR material requisition
MRI material receiving instruction
MRPC motorized rotating pancake coil
MRR metering, relaying, and regulation
MRRP Maintenance Rule Review Panel
MS main steam
ms manuscript
ms millisecond
MS Mississippi
MSA master service agreement
MSB main steamline break
MSBR molten salt breeder reactor
mscp mean spherical candlepower
MSCR molten salt cooled reactor
msec millisecond
MSFES mobile spent fuel evaluation system
MSHIM Mechanical shim
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MSICV main steam isolation check valve
MSIS main steam isolation signal
MSIV main steam isolation valve
MSL main steamline
MSLA main steamline accident
MSLB main steam line break
MSR material status report
MSR molten salt reactor
MSS main steam system
MSS Manufacturing Standardization Society (valves and fittings)
MSSR mixed spectrum superheat reactor
MST multiple stud tensioner
MSV mean square voltage
MT magnetic particle testing (nondestructive testing)
mt maximum torque
Mt megaton
MT Montana
MTBF mean time between failure
MTC moderator temperature coefficient
mtf mechanical time fuse
mtg meeting
MTR materials test reactor
MTS main turbine system
MTTR mean time to repair
MTU metric ton of uranium
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MTU metric ton unit
MUX multiplexer
MV megavolt
mV millivolt
mv multivibrator
MVa megavolt-ampere
MVP mechanical vacuum pump
MVS multiple virtual storage
MW megawatt
MWd megawatt-day
MWe megawatt-electric
MWh megawatt-hour
MWO manufacturing work order
MWt megawatt-thermal
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(n) number of bits
n electron (n)-type semi-conductor material
n nano (10-9
)
N national form (thread)
N newton
N normal (concentration, with a number)
N north
N/A not applicable
N/cm2
newton per square centimeter
N/kg newton per kilogram
N/m newton per meter
N/m2
newton per square meter
Ns/m2 newton-seconds per square meter
Nm newton meterNm/m newton meter per meter
N2 nitrogen
nA nanoampere
na naval architect
NABU Nuclear Automation Business Unit
NACE National Association of Corrosion EngineersNAP nuclear application program
NARA National Archives and Records Administration
NARUC National Association of Regulatory Utility Commissioners
NAS National Academy of Science
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NASA National Aeronautics and Space Administration
naut nautical
nb narrow band
NBS National Bureau of Standards
NBS New British Standard (imperial wire gage)
NBSR National Bureau of Standards Reactor
NC North Carolina
NC numerical control
NCA National Coal Association
nca nickel copper alloy
ncombl noncombustible
ncp normal circular pitch
NCR nonconformance report
NCRPM National Council on Radiation Protection and Measurements
NCS nuclear criticality safety
NCSA National Center for Supercomputing Applications
ND North Dakota
NDCA Nuclear Development Corporation of America
NDE nondestructive examination
ndp normal diametral pitch
NDRC National Defense Research Committee
NDT nondestructive testing
NDTT nil-ductility transition temperature
NE Nebraska
NEA Nuclear Energy Agency
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NEA Nuclear Engineering Associates
NEC National Electric Code
NEC Nuclear Energy Commission
NECS National Electrical Code Standards
NEE nuclear equipment engineering
NEF National extra fine (thread)
neg negative
NEI Nuclear Energy Institute
NEIR Nuclear Energy Research Initiative
NEMA National Electrical Manufacturers Association
NEO nuclear engineering and operations
NEPA National Evironmental Policy Act
NES Nuclear Energy Systems
NESC National Electric Safety Code
NESF normal engineered safety feature
NESP National Environmental Studies Project
neutrons/cm2
neutrons per square centimeter (neutron flux)
neutrons/cm2-sec neutrons per square centimeter per second
nf nanofad
NF National fine (thread)
NFBU Nuclear Fuel Business Unit
NFPA National Fire Protection Association
ng narrow gage
NGO National gas outlet (thread)
NGPWR next generation PWR
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nH nanohenry
NH New Hampshire
NH nose height
NI nuclear island
NIC Nuclear Industry Check Valve Group
NIMS NSSS integrity monitoring system
NIOBE numerical integration of the Boltzmann equation
NIRL negligible individual risk level
NIS nuclear instrumentation system
NJ New Jersey
nm nanometer
NM New Mexico
NMAC Nuclear Maintenance Assistance Center(Electric Power Research Institute)
nmi nautical mile
NMIS nuclear materials information system
NMM network management module
NMRG Nuclear Managers Review Group
NMS National Measurement System
NMSS Nuclear Material Safety and Safeguards, Office of (NRC)
NNS non-nuclear safety
NNSA National Nuclear Safety Administration
NO normally open
No. number
NOG Nordic Owners Group
NOK Nordostschweizerische Kraftwerke AG (Switzerland)
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NR nonconformance report
NRC Nuclear Regulatory Commission
nrcp nonreinforced concrete pipe
NRHR normal residual heat removal
NRL narrow-range span
NRTS National Reactor Testing Station
NRU National Research Univeral
ns nanosecond (10-9
second)
NS National special (thread)
NSA Nuclear Science Abstracts
NSBU Nuclear Services Business Unit
NSC National Security Council
NSF National Science Foundation
NSP Northern States Power
NSR non-safety related
NSSS nuclear steam supply system
NTAB Nuclear Technical Advisory Board (ANSI)
ntc negative temperature coefficient
NTCP near-term construction permit
NTIS National Technical Information Service
NTOL near-term operating license
ntp normal temperature and pressure
nts negative torque signal
NUIS non-unit information system
num numeral
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num numerical
NUMARC Nuclear Management and Resources Council
NUMEC Nuclear Materials and Equipment Corporation
NUPLEX nuplex 80+ control system
NUPPSCO Nuclear Power Plants Standards Committee
NUREG NRC technical report designation
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
nv neutron flux
nv neutron volts
NV Nevada
nvr no voltage release
nW nanowatt
NWG National Wire Gage
NWPA Nuclear Waste Policy Act
nwt nonwatertight
NYASDA New York Atomic & Space Development Authority
NY New York
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(ohm-cm)-1
(ohm-centimeter)-1
(conductivity)
O&M operation and maintenance
o&r overhaul and repair
O2 oxygen
OA operating authorization
oba oxygen breathing apparatus
OBE operating basis earthquake
obj object
obst obstacle
oc outside circumference
oc overcurrent
ocb override control bits
oco open-close-open
OCR organic cooled reactor
ocr overcurrent relay
OCS operation and control center system
Oct October
od outside diameter
ODSCC outside diameter stress corrosion cracking
Oe oersted
OE Office of Enforcement (NRC)
OEC Oregon Environment Council
OECD Organization for Economic Cooperation and Development
Oe-cm oersted-centimeter
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orig original
ORNL Oak Ridge National Laboratory
OSA operational sequence analyses
OSC operations support center
osc oscillate (oscillator)
oscg oscillating
OSHA Occupational Safety & Health Administration
ot&e operational test and evaluation
OTA open test assembly
OTDT over-temperature delta-T
OTS Operational Technical Specification
ovhd overhead
ovhg overhanging
ovhl overhaul
ovld overload
ovpwr overpower
owf optimum working frequency
oz in. ounce-inch
oz ounce
oz-in. moments or torque
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3p sw three-pole switch
3p three-pole
3pdt sw three-pole double-throw switch
3pdt three-pole double-throw
3pst sw three-pole single-throw switch
3pst three-pole single-throw
4p sw four-pole switch
4p four-pole
4pdt sw four-pole double-throw switch
4pst sw four-pole single-throw switch
P Max maximum pressure
p hole (p)-type semi-conductor material
p page
p pico (10
-12
)
P poise
P&CC Planning and Control Cost Department
p&d distr power and lightning distribution
P&I proportional and integral
P&ID piping and instrument diagram
p&l power and lightning
P&MC procurement & material control
p&o pickled and oiled
P/L part length
p/o part of
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P+T partitioning and transmutation
P+T partitioning and transmutation
Pa pascal
PA Pennsylvania
pA picoampere
Pas pascal second
PAC program administration & control
pam pulse amplitude modulation
PAMS post-accident monitoring system
PAMS post-accidnet monitoring system
PAR passive autocatalytic recombiner
PAR procurement advisory release
parv paravane
PAS process automation system
PASNY Power Authority of the State of New York
PBL pressure break line
PBMR Pebble Bed Modular Reactor
PBNC Pacific Basin Nuclear Conference
PBS power breakdown structure
PC personal computer
pc&h packing, crating, and handling
pcb power circuit breaker
PCCAWS passive containment cooling ancillary water storage tank
PCCWST passive containment cooling system water storage tank
pci peripheral command indicator
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pcm pulse code modulation
pcn position control number
PCP payment control point
PCRV prestressed concrete reactor vessel
PCS passive containment cooling system
PCS plant control system
PCT peak cladding temperature
pcu power control unit
pcv pressure control valve
PCWG Power Capabilities Working Group
PCWS passive containment cooling water storage
PDA plant data acquisition
PDAS plant data acquisition system
pdf portable document format
pdm pulse duration modulation
pdr power directional relay
PDS Purchasing Department Specification
perl Practical Extraction and Reporting Language
perm permanent
PERT performance evaluation and review technique
pF picofarad
pf pulse frequency
PFMP powef generation systems planning
PFR prototype fast reactor
PGS plant gas system
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ph brz phophor bronze
pH hydrogen ion concentration (negative logaritm)
PHCU pressurizer heater control unit
phcv-sd phase conversion and step/down
phen phenolic
phh phillips head
phm phase meter
phos phosphate
php pound-force per horsepower
php pounds per horsepower
phr pound-force per hour
phrhd pump, hydraulic ram, hand-driven
PHS Public Health Service
PHWR pressurized heavy water reactor
pi point of intersection
PI polarization index
PI process instrumentation
PI programmed instruction
pic polyethylene-insulated conductor
PID proportional integral derivative
pim pulse interval modulation
pin. positive-intrinsic-negative (transistor)
PIP project information package
pip project information package
PIRT phenomena identification ranking table
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piv peak inverse voltage
piv post indicator valve
pk peck
pkg package
pl parting line (castings)
PLAP Plant Life Assessment Program
plc power-line carrier
PLC programmable logic controller
PLCS pressure level control system
PLEX plant life extension
PLIM plant life management
PLIOFF plant-level impact of functional failure
PLS plant control system
PLS precautions, limitations, and setpoints
plsn pulsation
pltg plating
pm post meridiem (afternoon)
pm pound-force per minute
pm pounds per minute
PM preventive maintenance
PMA process measurement accuracy (calculations)
pmd program monitoring and diagnosis
PMD Project Master Document
PME precision measuring equipment
PMNP platform-mounted nuclear plant
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PMO plant maintenance optimization (optimizer)
PMP Performance Management Process
PMP preventive maintenance process
PMS plant monitoring system
PMS protection and safety monitoring system
PNL Pacific Northwest Laboratory
pnp positive-negative-positive (transistor)
PNS project numbers system
PO purchase order
POGE power generation
POR plant overview room
PORC plant operating review committee
PORV power-operated relief valve
POS plant operating system
potw potable water
ppb parts per billion
PPCS pressurizer pressure control system
pph pounds per hour
PPIP primary plant instrument panels
PPIT product and process improvement team
ppm parts per million
ppm pulse position modulation
PPP point-to-point-protocol
PPS plant protection system
PPS programs, products, and services
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PQP Project Quality Plan
PR Puerto Rico
PR purchase requisition
PR.P pressurizer pressure
PRA probabilistic risk assessment
prb parabola
PRC Peoples Republic of China
prc point of reverse curve
prefab prefabricated
prelim preliminary
prep preparation
prep prepare
prf pulse repetition frequency
PRHR passive residual heat removal
PRM project review meeting
prod. product
prod. Production
PROF probability of failure
prof professional
PRPS primary reactor protection system
prr pulse repetition rate
PRT pressurizer relief tank
prt pulse repetition time
prv peak reverse voltage
PRV pressure relief valve
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ps chloropicrin
ps polystyrene
PS power systems
PSA probabilistic safety assessment
PSAR Preliminary Safety Analysis Report
PSDAR Post-Shutdown Decommissioning Activities Report
psf pound-force per square foot
psf pounds per square foot
psi pound-force per square inch
psi pounds per square inch
PSI preservice inspection
psi protosynthex index
psia pound-force per square inch absolute
psia pounds per square inch absolute
psig pound-force per square inch gage
psig pounds per square inch gage
PSP Power Systems Planning
psr plow-steel rope
PSS primary sampling system
pst point of spiral tangent
psu power supply unit
pswbd power switchboard
PTAW plasma transferred arc welding
ptfe polytetrafluoroethylene
ptm pulse time modulation
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PTML pnp transistor magnetic logic
ptmtlg pitometer-log
pts pneumatic test set
PTS pressurized thermal shock
ptwt photo-type traveling wave tube
pu pickup
Pu plutonium
PUC Public Utility Commission
PV pressure vessel
PVRC Pressure Vessel Research Council
pvt pressure-volume-temperature
pW picowatt
PWHT post-weld heat treatment
PWR pressurized water reactor
pwrh powerhouse
PWRS pressurized water reactor system
PWRSD Pressurized Water Reactor System Division
PWS primary water storage
PWSCC primary water system stress corrosion cracking
PXS passive core cooling system
pyro pyrotechnic
pzr pressurizer
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q&a question and answer
QA quality assurance
QAPD Quality Assurance Program Description
QAR quality action request
QC quality control
QCR quality control reliability
QCI quality performance improvement plan
QDPS qualified data processing system
qdrnt quadrant
qod quick-opening device
qov quick-opening valve
QP quality procedure
qtr quarter
qtrs quarters
qty quantity
qtz quartz
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R degree Rankine
Re degree Reaumur
rd quarter round
rd half-round
1red first reduction
2red second reduction
R Rankine
r ratior roentgen
R&C review and comment
R&D research and development
R&T research and technology
r/hr roentgens per hour
r/r readout and relayr/w right of way
ra reduction of area
RABL reflood assist bypass line
rad radian
RAD radiation design
radiac radiation detection indicating and computationradl radiological
radmon radiological monitoring
RAI request for additional information
ralw radioactive liquid waste
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RCPCCW reactor coolant pump component cooling water
RCPS reactor control and protection system
RCPSSS RCP shaft speed sensing system
RCS reactor coolant system
rcs remote control system
RCTL resistor-capacitor-transistor logic
RCV radiation control valve
rcv receive
rcvd received
RD requirements document
rd root diameter
rdm recording demand reader
rdout readout
rdt&e research, development, test, and evaluation
rdx cyclonite
Re Reaumur
rec receive
recirc recirculate
RECON remote console
redox oxidation-reduction
ref reference
rei request for engineering information
reimb reimburse
reinf reinforce
rem roentgen equivalent, mammal
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rem roentgen equivalent, man
reorg reorganization
rep roentgen equivalent, physical
req require
reqd required
RESAR Reference Safety Analysis Report
retro retroactive
rev revise
rev revision
rewk rework
rf radio frequency
RF refueling outage
RFB request for bid
rfc radio-frequency choke
RFC request for comments
rfi radio-frequency interference
rflx reflex
RFP request for proposal
RFQ request for qualification
rfw reserve feedwater
RG Regulatory Guide
RGE Rochester Gas & Electric
RH residual heat
rhp reduced hard pressure
rhr reheater
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RHR residual heat removal
RHRS residual heat removal system
RHX residual heat exchanger
RI reactor internal
RI Rhode Island
rifi radio interference field intensity
ril red indicating light
RIL rod insertion limit
riot. real-time input-output transducer
RIP rod internal pressure
RL resistance inductance
RLC resistance inductance capacitance
RM radiation monitoring
RM refueling machine
rm room
RMR Revised Methodology Report
RMS radiation monitoring system
RMS radiation monitoring system
rms root mean square
rms square root of mean square
RMW reactor makeup water
RNB return to nucleate boiling
rndm random
RNS normal residual heat removal system
ro/ro roll on/roll off
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ROI return on investment
ROK Republic of Korea (South Korea)
ROM read-only memory
ROSA robot-operated service arm
RPCBS reactor power cutback system
RPCP reactor plant control panel
rpd renewable parts data
rpm revolutions per minute
RPQ request for price quotation
RPS reactor protection system
rps revolutions per second
RPV reactor pressure vessel
RR rapid refueling
RRS reactor regulatory system
RRS Repair and Replacement Services
RRW risk reduction worth
rs&i receipt, storage, and issue
RSB reactor systems branch
RSG reactor steam generator
RSG replacement steam generator
RSI relative susceptibility index
RSIC radiation shielding information center
RSO NSD Resource & Support Operations
RSP remote shutdown panel
RSPT reed switch position transmitters
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RSR remote shutdown room
rss root sum square
RSW remote shutdown workstation
RT radioactive testing (nondestructive)
RT radiographic testing
RT reactor trip
RTD resistance temperature detector
RTDP revised thermal design procedure
RTF run to failure
RTL resistor-transistor logic
rtm recording tachometer
RTM release to manufacture
RTN reconstitutable top nozzle
RTP rated thermal power
RTRP reduced temperature return to power
RTS reactor trip switchgear
RV reactor vessel
rv relief valve
RVF reactor vessel failure
RVI reactor vessel internal
RVI remote visual inspection
rvm reactive voltmeter
rvp reid vapor pressure
RWG Roebling Wire Gage
RWST refueling water storage tank
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RXS reactor system
rz return-to-zero
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s second (combination form)
S siemens
S south
S&A surveillance and accountability
s/a subassembly
s/r send and receive
SA safety analysis
sa spectrum analyzer
sa stress anneal
SABE system engineer
SACE semiautomatic checkout equipment
SAE site area emergency
SAE Society of Automotive Engineers
SAFDL specified acceptable fuel design limit
SAFE safeguards automated facility evaluation
SAFR sodium advanced fast reactor
SAID safety analysis input data
SAIGE Societdi Architettura Industriale per Gli Impiantidi Generazionede Energia, SpA (Italy)
SAL safety analysis limit
sal salinity
sal salinometer
SALE safeguards analytical laboratory evaluation
salv salvage
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SAM substitute alloy material
SAMA Scientific Apparatus Makers Association
SAMDA severe accident mitigation design alternative
SAMIS structural analysis and matrix inversion system
SAO Station Administration Order
SAP Safety Assessment Principle
SAR Safety Analysis Report
sat. saturate
satfy satisfactory
satl satellite
SAW submerged arc weld
sb sideband
sb sleeve bearing
sb solid body
sb stilb
sb stove bolt
sb synchronization bit
SBCS steam bypass control system
SBLOCA small-break LOCA
sbm submersible
SBO station blackout
sbstr substrate
sc scale
SC secondary chemistry
sc shaft center
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sc single contact
SC South Carolina
SC steam system
SC structures and components
scalo scanning local oscillator
scav scavenge
scc single conductor cable
scc steam corrosion cracking
SCC stress corrosion cracking
scdp steel cadmium plated
scf standard cubic feet
SCF stress concentration factor
SCFBR steam cooled fast breeder reactor
scfh standard cubic feet per hour
scfm standard cubic feet per minute
sch socket h