| Abbreviation |
Description |
| A.W. |
"A"
West Side |
| A/D |
Analog/Digital |
| ABED |
Auxiliary
Building Equipment Drains |
| ABEDT |
Auxiliary
Building Equipment Drain Tank |
| ABFD |
Auxiliary
Building Floor Drain |
| ABFDT |
Auxiliary
Building Floor Drain Train |
| AC |
Alternate
Current |
| ACB |
Air
Circuit Breaker |
| ACK |
Acknowledge |
| ACT |
Actual |
| ACT |
Actuate* |
| ADJ |
Adjust |
| AE |
"A"
East Side |
| AFW |
Auxiliary
Feedwater |
| AIDS |
Accident
Identification Display System |
| ALM |
Alarm |
| AMB |
Ambient |
| AMP(S) |
Ampere(s) |
| ANAL |
Analyzer |
| ANNUN |
Annunciator |
| AO(V) |
Air
Operated (Valve) |
| AR |
Area
(Radiation) Monitoring |
| AUCT |
Auctioneered |
| AVG |
Average |
| B.E. |
"B"
East Side |
| B.W. |
"B"
West Side |
| BA |
Boric
Acid |
| BAR |
Bar
Graph |
| BAT |
Boric
Acid Tank |
| BAT |
Battery* |
| BATT |
Battery |
| BGY |
Bogey |
| BIST |
Bistable |
| BIT |
Boron
Injection Tank |
| BKR |
Breaker |
| BLOC |
Block |
| BOP |
Balance
of Plant |
| BTM |
Bottom |
| BTU |
British
ThermalUnit |
| BUP |
Backup |
| C |
Centigrade
(Celsius) |
| C.E. |
"C"
East Side |
| C.W. |
"C"
West Side |
| C/CB |
Condensate
- Condensate Booster |
| C1M |
Cumulative
One Minute |
| CAB |
Cabinet |
| CAL |
Calibration |
| CAUS |
Cause |
| CCW |
Component
Cooling Water |
| CCW |
Closed Cooling Water* |
| CD |
Condensate |
| CDB |
Condensate
Booster |
| CDT |
Chemical
Drain Tank |
| CHAM |
Chamber |
| CHAN |
Channel |
| CHNG |
Change |
| CHRG |
Charging |
| CJB |
Cold
Junction Box |
| CKT |
Circuit |
| CL |
Cold
Leg |
| CLNG |
Cooling |
| CMPT |
Computed |
| CNMT |
Containment |
| COM |
Common |
| COMP |
Component |
| CONC |
Concentration |
| COND |
Condensar |
| COND |
Condensor/Condensate* |
| CONDTY |
Conductivity |
| CONT |
Controller |
| CONT
ROD |
Control
Rod |
| CONTR |
Control |
| COR |
Correction |
| CORR |
Correlation |
| COUNT |
Count |
| CPM |
Counts
Per Minute |
| CPU |
Central
Processing Unit |
| CPUS |
Central
Processing Units |
| CR |
Control
Room |
| CROM |
Control
Rod Drive Mechanism |
| CS |
Containment
Spray |
| CSR |
Cable
Spreading Room |
| CST |
Condensate
Storage Tank |
| CUMLT |
Cumulative |
| CW |
Circulating
Water |
| CW |
Circulatring Water* |
| CW
PP |
Circulating
Water Pump |
| CYL |
Cylinder |
| D/G |
Diesel
Generator |
| DCPM |
Deca
Counts Per Minute |
| DEG |
Degrees |
| DEMIN |
Demineralizer* |
| DET |
Detector |
| DEV |
Devation |
| DISC |
Disconnect |
| DIV |
Division |
| DO |
Diesel
Fuel Oil |
| DOT |
Dirty
Oil Tank |
| DSCH |
Discharge |
| DT |
Delta
Temperature |
| ECCS |
Emergency
Core Cooling System |
| EDT |
Equipment
Drain Tank |
| EFCT |
Effect |
| EFLNT |
Effluent |
| EHC |
Electro
Hydraulic Control |
| ELEC |
Electrical |
| EQ |
Equipment |
| EQUIP |
Equipment |
| ES |
Extraction
Steam |
| ESF |
Engineered
Safety Feature |
| ESS |
Essential
Service |
| EXH |
Exhaust |
| EXH |
Exhauster/Exhaust* |
| EXPANS |
Expansion |
| EXTR |
Extracted |
| EXTR |
Extractor/Extraction* |
| F |
Fahrenheit |
| FCV |
Flow
Control Valve |
| FD |
Forced
Draft |
| FH |
Fuel
Handling |
| FLW |
Flow |
| FO |
Fuel
Oil |
| FREQ |
Frequency |
| FRNT |
Front |
| FW |
Feed
Water |
| GM |
Geiger
Mueller |
| GOV |
Governor |
| GPM |
Gallons
Per Minute |
| GRD |
Ground |
| GRP |
Group |
| GSC |
Gland
Steam Condensor |
| GV |
Governor
Valve |
| HG(A) |
Mercury
(absolute) |
| HGHT |
Height |
| HIDP |
High
Differential Pressure |
| HL |
Hot
Leg |
| HOV |
Hydraulic
Operated Valve |
| HP |
High
Pressure |
| HR(S) |
Hour |
| HRSS |
High
Radiation Sampling System |
| HT
RT |
Heat
Rate |
| HTNG |
Heating |
| HU/CD |
Heatup/Cooldown |
| HUT |
Hold
up Tank |
| HVAC |
Air
Conditioning |
| HYD |
Hydraulic |
| HZ |
Hertz |
| I/O |
Input/Output |
| I/P |
Current
to Pressure |
| I/V |
Current
to Voltage |
| IA |
Instrument
Air |
| ID |
Identification |
| IIC |
Inter
Process Interrupt Card |
| IN |
Input |
| INBO |
Inboard |
| INC |
Increase |
| INF |
Influent |
| INIT |
Initial |
| INL |
Inlet |
| INSERTIN |
Insertion |
| INST |
Instrument |
| INST |
Instantaneous* |
| INT |
Internal |
| INTERM |
Intermediate |
| IOD |
Iodine |
| ISOL |
Isolation |
| JUNCT |
Junction |
| K |
Kilo |
| L/L |
Lead/Led,
an electronic module used to stabilize flow |
| Labyrnth |
Labyrinth |
| LD |
Load
Dispatcher |
| LIM |
Limit |
| LIN |
Linear |
| LNG |
Long |
| LO
FLW |
Low
Flow |
| LOCA |
Loss
of Coolant Accident |
| LOSC |
Loss
of Secondary Coolant |
| LP |
LOW
Pressure |
| M/G |
Motor
Generator Sets |
| MAINT |
Maintenance |
| MAX |
Maximum |
| MCAMP |
Microcamp |
| MCB |
Main
Control Board |
| MCR |
Main
Control Room |
| MFP |
Main
Feed Pump |
| MIN |
Minutes |
| MIN |
Minimum* |
| MOIST |
Moisture |
| MPH |
Miles
Per Hour |
| MPS |
Miles
Per Second |
| MS |
Main
Steam |
| MS |
Moisture Separator* |
| MSIV |
Main Steam Isolation Valve |
| MSR |
Moisture
Separtor Reheater |
| MTR |
Motor |
| MU |
Makeup |
| MV |
Millivolt |
| MVBL |
Moveable |
| MWDMTU |
Mega
Watt Days Per Metric Ton Uranium |
| NAOH |
Sodium
Hydroxide |
| NAR |
Narrow |
| NAR
RNG |
Narrow
Range |
| NBL |
Noble |
| NCCC |
Nano
Curies Per Cubic Centimeter |
| NEG |
Negative |
| NEUT |
Neutron |
| NIS |
Nuclear
Instrumentation System |
| NR |
Narrow
Range |
| NUC |
Nuclear |
| OCB |
Oil
Circuit Breaker |
| OG |
Off-Gas |
| OOS |
Out
of Service |
| OP |
Over
Pressure |
| OPER |
Operator |
| OPER |
Operating |
| OT |
Over
Temperature |
| OT-OP |
Over
Temperature-Over Pressure |
| OUT |
Output |
| OUTBD |
Outboard |
| OUTLT |
Outlet |
| OVERLD |
Overload |
| OVERTEMP |
Overtemperature |
| OVRPWR |
Overpower |
| P6 |
Permissive
6 |
| P7 |
Permissive
7 |
| P8 |
Permissive
8 |
| PART |
Partial |
| PARTIC |
Particulate |
| PC |
Pico
Curies |
| PCT |
Percent |
| PCV |
Pressure
Control Valve |
| PENET |
Penetration |
| PMG |
Permanent
Magnet Generator |
| PNEU |
Pneumatic |
| PORV |
Power
Operated Relief Valve |
| POS |
Positive |
| POST |
Position |
| POT |
Potentiometer |
| PPB |
Parts
per Billion |
| PPM |
Parts
per Million |
| PR58 |
Process
Radiation Monitor 58 |
| PREAMP |
Preamplifiers |
| PRG |
Purge |
| PRI |
Primary |
| PROC |
Process |
| PRT |
Pressurizer
Relief Tank |
| PS |
Power
Supply |
| PSI |
Pounds
Per Square Inch |
| PSIA |
Pounds
Per Square Inch Absolute |
| PSIG |
Pounds
Per Inch Gauge |
| PSIO |
Pounds
Per Square Inch Differential |
| PT |
Point |
| PTL |
Pull-To-Lock |
| PW |
Primary
Water |
| PWR
RNG |
Power
Range |
| PZR |
Pressurizer
Relief Tank |
| Q |
Flux |
| QF |
Quality
Factor |
| QUADS |
Quadrant
5 |
| QUE |
Queued,
or called upon |
| RC |
Reactor
Coolant |
| RCDT |
Reactor
Coolant Drain Tank |
| RCFC |
Reactor
Containment Fan Cooler |
| RCL |
Reactor
Coolant Loop |
| RCLA |
Reactor
Coolant Loop A |
| RCLB |
Reactor
Coolant Loop B |
| RCLC |
Reactor
Coolant Loop C |
| RCLD |
Reactor
Coolant Loop D |
| RCS |
Reactor
Coolant System |
| RDT |
Reheater
Drain Tank |
| RECOMB |
Recombiner |
| REGEN |
Regenrative |
| REL |
Relative |
| RESID |
Residual |
| RH |
Residual
Heat |
| RHR |
Residual
Heat Removal |
| RHT |
Reheat |
| RLY |
Relay |
| RMP |
Redundant
Measurement Program |
| RNG |
Range |
| RNG |
Running* |
| ROC |
Rate
of Change |
| RPM |
Revolutions
Per Minute |
| RPM |
Reactor
Protection |
| RTD |
Resistance
Temperature Detector |
| RTN |
Return |
| RVLIS |
Reactor
Vessel Level Indication System |
| RW |
Radwaste |
| RWST |
Refueling
Water Storage Tank |
| S/G |
Steam
Generator |
| SA |
Service
Air |
| SB |
Service
Building |
| SEC |
Second |
| SEL |
Select |
| SEP |
Seperator |
| SERV |
Service |
| SFP |
Service
Fuel Pump |
| SGTR |
Steam
Generator Tube Rupture |
| SI |
Safety
Injection |
| SI
BLOC |
Safety
Injection Block |
| SIG
COND |
Signal
Conditioner |
| SPDS |
Safety
Parameter Display System |
| SPEC |
Specification |
| SPG |
Scanned
Process Group |
| SR |
Source
Range |
| STDY |
Steady |
| STNBY |
Standby |
| STOR |
Storage |
| SUPPR |
Suppressed |
| SUPRESS |
Suppression |
| SUSPENDS |
Suspensions:
Keeps track of how many times CPU is suspended |
| SW |
Service
Water |
| SW |
Switch* |
| SWST |
Secondary
Water Storage Tank |
| T/C |
Thermocouples |
| TAMB |
Temperature
Ambient |
| TAVG |
Average
Temperature between hot & cold leg of a reactor coolant loop |
| TB |
Turbine
Building |
| TB |
Terminal Box/Block* |
| TC |
Cold
Leg Temperature |
| TCV |
Temperature
Control Valve |
| TD |
Turbine
Drain |
| THER |
Thermal |
| THRT |
Throttle |
| THST |
Thrust |
| TOT |
Total |
| TREP |
Reference
Temperature |
| TRNA |
Train
A |
| TRNSNT |
Transient |
| TRP |
Trip |
| TTD |
Terminal
Temperature Difference |
| TURBS |
Turbines |
| UNACCOUNT |
Unaccountable |
| UNCONT |
Uncontrolled |
| UNCORR |
Uncorrected |
| VAC |
Volts
Alternating Current |
| VAC |
Vacuum* |
| VALS |
Values |
| VAP |
Vapor |
| VAR |
Variance |
| VCT |
Volume
Control Tank |
| VDC |
Volts
Direct Current |
| VIB |
Vibration |
| VNT |
Vent |
| VOL |
Volume |
| VOLT(S) |
Volt(s) |
| WNDGS |
Windings |
| WR |
Wide
Range |
| XFR |
Transfer |
| XMTR |
Transmitter |
| * BWR |
|
