The Diablo Canyon Nuclear Power Plant Special Studies Final Report with the Final Assessment including the Addendum, prepared by the Bechtel Power Corporation, together with information for the State Water Resources Control Board’s meeting of November 18, 2014 to consider the results and evaluate the need to modify the Once-Through Cooling Policy, may be reviewed at: The DCISC’s Comments on the Bechtel Report together with its Evaluation, dated September 5, 2013, of safety issues for several alternative cooling technologies may be reviewed at that website with the material for the November 4, 2013, meeting of the Review Committee for Nuclear Fueled Power Plants.

The DCISC approved its Preliminary Evaluation of safety issues for the Addendum to the Final Assessment of Alternate Cooling Technologies or Modifications to Once-Through Cooling at its meeting on October 14, 2014, in Avila Beach, California, and provided its Preliminary Evaluation to the State Water Resources Control Board on October 31, 2014. The Preliminary Evaluation may be reviewed here:
October 17, 2014 DCISC Preliminary Evaluation as PDF.

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.

n nano- (10-9) (prefix)
NR narrow range
NBFU National Board of Fire Underwriters
NBS National Bureau of Standards
NEC National Electric Code
NEMA National Electrical Manufacturer’s Association
NEPA National Environmental Policy Act
NFPA National Fire Protection Association
NFPC National Fire Protection Code
NPDES National Pollutant Discharge Elimination System
near-term (adj)
NTOL near-term operating license
NPSH net positive suction head
n/cm 2 neutrons per square centimeter
n/cm2 -sec neutrons per square centimeter per second
N newton
NDT nil ductility temperature
N nitrogen
NDD no detectable degradation
no-load (condition)
NCR Nonconformance Report
NDE nondestructive examination
NDT nondestructive testing
NPTS nonradiological permit tracking system
NOP normal operating pressure
NOT normal operating temperature
N/C normally closed
N/O normally open
N/A not applicable
NTS not to scale
NOD Notice of Deviation
NOV Notice of Violation
NEI Nuclear Energy Institute
NEI-98-XXX Nuclear Energy Institute Letter
NIS nuclear instrumentation system
NUMARC Nuclear Management and Resources Council
NMSS Nuclear Material Safety and Safeguards (NRC)
NPAP Nuclear Plant Administrative Procedure
NPPR Nuclear Plant Problem Report
NPRDS Nuclear Plant Reliability Data System
NPG Nuclear Power Generation
NQS Nuclear Quality Services
keff or keff nuclear reactivity
NRR Nuclear Reactor Regulation (NRC)
NSOC Nuclear Safety Oversight Committee
NSSS nuclear steam supply system
NTS Nuclear Technical Services
NUFPG Nuclear Utility Fire Protection Group
number(s)no. (nos.)

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: