Fire Risk Scoping Study: Investigation of nuclear power plant fire risk, including previously unaddressed issues
An investigation of nuclear power plant fire risk issues raised as a result of the USNRC sponsored Fire Protection Research Program at Sandia National Laboratories has been performed. The specific objectives of this study were (1) to review and requantify fire risk scenarios from four fire probabilistic risk assessments (PRAs) in light of updated data bases made available as a result of USNRC sponsored Fire Protection Research Program and updated computer fire modeling capabilities, (2) to identify potentially significant fire risk issues that have not been previously addressed in a fire risk context and to quantify the potential impact of those identified fire risk issues where possible, and (3) to review current fire regulations and plant implementation practices for relevance to the identified unaddressed fire risk issues. In performance of the fire risk scenario requantifications several important insights were gained. It was found that utilization of a more extensive operational experience base resulted in both fire occurrence frequencies and fire duration times (i.e., time required for fire suppression) increasing significantly over those assumed in the original works. Additionally, some thermal damage threshold limits assumed in the original works were identified as being nonconservative based on more recent experimental data. Finally, application of the COMPBRN III fire growth model resulted in calculation of considerably longer fire damage times than those calculated in the original works using COMPBRN I. 14 refs., 2 figs., 16 tabs.
- Research Organization:
- Nuclear Regulatory Commission, Washington, DC (USA). Div. of Regulatory Applications; Sandia National Labs., Albuquerque, NM (USA)
- DOE Contract Number:
- AC04-76DP00789
- OSTI ID:
- 6493133
- Report Number(s):
- NUREG/CR-5088; SAND-88-0177; ON: TI89006830
- Country of Publication:
- United States
- Language:
- English
Similar Records
An overview of the fire risk scoping study objectives, approach, findings and follow-on efforts
The impact of updated information and modeling techniques on four previously completed commercial nuclear power plant fire probabilistic risk assessments
Related Subjects
220400 -- Nuclear Reactor Technology-- Control Systems
220900* -- Nuclear Reactor Technology-- Reactor Safety
99 GENERAL AND MISCELLANEOUS
990220 -- Computers
Computerized Models
& Computer Programs-- (1987-1989)
C CODES
COMPUTER CODES
COMPUTERIZED SIMULATION
CONTROL SYSTEMS
FIRE FIGHTING
FIRE PREVENTION
FIRES
NUCLEAR FACILITIES
NUCLEAR POWER PLANTS
POWER PLANTS
REACTOR CONTROL SYSTEMS
REACTOR SAFETY
RECOMMENDATIONS
REGULATIONS
RESEARCH PROGRAMS
RISK ASSESSMENT
SAFETY
SEISMIC EFFECTS
SIMULATION
THERMAL POWER PLANTS