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.

A | B | C | D | E | F | G | H | I | J,K | L | M | N | O | P,Q | R | S | T | U,V | W,X,Y,Z

p (pp) page(s)
PID partial initial decision
PT particle testing
ppb parts per billion
ppm parts per million
part-time (adj), part time (adv)
Pa pascal
PCT peak cladding temperature
PGA peak ground acceleration
PGV peak ground velocity
PT penetrant test (dye)
% percent
PIP Performance Incentive Plan
PI performance indicator
PRP Performance Recognition Program
PERS personnel exposure records system
PSER Physical Security Event Report
PSP Physical Security Plan
p pico- (10-12) (prefix)
pCi picocurie
pF picofarad
P&ID piping and instrumentation diagram (drawing)
P&IS piping and instrument schematic
PIMS Plant Information Management System
PIM Plant Issues Matrix (NRC)
PLEX plant life extension
PPR plant performance review (NRC)
PPT plant performance template (NRC)
PPC plant process computer
PPS plant protection system
PSRC Plant Staff Review Committee
PVC polyvinyl chloride
PCD population center distance
PDP positive displacement pump
p.m. post meridiem (after noon)
PAM post-accident monitoring
PASS post-accident sampling system
PMT post-maintenance test
PSDAR Post-Shutdown Decommissioning Activities Report
PWHT post-weld heat treatment
PE potential energy
lb pound(s)
psi pounds per square inch
psia pounds per square inch, absolute
psid pounds per square inch, differential
psig pounds per square inch, gage
power block
PCB power circuit breaker
PF power factor
PR power range
PRNI power range nuclear instrument
PORV power(pressure)-operated relief valve
prefab prefabricated
PSAR Preliminary Safety Analysis Report
PSI preservice inspection
PNAC President’s Nuclear Advisory Committee
mm Hg pressure (millimeter of mercury)
PTLR pressure and temperature limits report
PI pressure indicator
PS pressure switch
PT pressure transmitter
PVRC Pressure Vessel Research Committee
PTS pressurized thermal shock
PWR pressurized water reactor
PRT pressurizer relief tank
PSRV pressurizer safety relief valve
PM preventive maintenance
PWSCC primary water stress corrosion cracking
PRA probabilistic risk assessment
POD probability of detection
POPCD probability of prior cycle detection
pe probable error
PMF probable maximum flood
PMP probable maximum precipitation
procedure (capitalize when specific)
PCD procedure commitment database
PCP Process Control Program
PD Program Directive
POA prompt operability assessment
PAB protected area boundary
PAG Protective Action Guide (exposure limits)
PAS public address system
PDR Public Document Room
PSD Public Staff Division (of CPUC
PUC Public Utilities Commission
PO purchase order
Q-List (classification listing of structures, systems, and components)
QPTR quadrant power tilt ratio
QTD quadrant tilt difference
QBL qualified bidders list
QSL qualified suppliers list
QA quality assurance (when used generically)
QAPR Quality Assurance Problem Report
QAP quality assurance procedure
QAF quality audit finding
QC quality control (when used generically)
QE Quality Evaluation
Quality Hotline
QPAR Quality Performance Assessment Report
QPR Quality Problem Report
QPSR Quality Problem Status Report

For more information about DCISC contact:

Diablo Canyon Independent Safety Committee
Office of the Legal Counsel
857 Cass Street, Suite D, Monterey, California 93940
Telephone: in Califonia call 800-439-4688; outside of California call 831-647-1044
Send E-mail to: