Risk analysis of highly combustible gas storage, supply, and distribution systems in PWR plants
- Science Applications International Corp., Albuquerque, NM (United States)
- EG and G Idaho, Inc., Idaho Falls, ID (United States)
- SCIENTECH, Inc., Idaho Falls, ID (United States)
This report presents the evaluation of the potential safety concerns for pressurized water reactors (PWRs) identified in Generic Safety Issue 106, Piping and the Use of Highly Combustible Gases in Vital Areas. A Westinghouse four-loop PWR plant was analyzed for the risk due to the use of combustible gases (predominantly hydrogen) within the plant. The analysis evaluated an actual hydrogen distribution configuration and conducted several sensitivity studies to determine the potential variability among PWRs. The sensitivity studies were based on hydrogen and safety-related equipment configurations observed at other PWRs within the United States. Several options for improving the hydrogen distribution system design were identified and evaluated for their effect on risk and core damage frequency. A cost/benefit analysis was performed to determine whether alternatives considered were justifiable based on the safety improvement and economics of each possible improvement.
- Research Organization:
- Nuclear Regulatory Commission, Washington, DC (United States). Div. of Safety Issue Resolution; EG and G Idaho, Inc., Idaho Falls, ID (United States)
- Sponsoring Organization:
- Nuclear Regulatory Commission, Washington, DC (United States)
- DOE Contract Number:
- AC07-76ID01570
- OSTI ID:
- 10162133
- Report Number(s):
- NUREG/CR--5759; EGG--2640; ON: TI93015919
- Country of Publication:
- United States
- Language:
- English
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080200
21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS
210200
22 GENERAL STUDIES OF NUCLEAR REACTORS
220900
COMBUSTION
COST BENEFIT ANALYSIS
GASES
HYDROGEN STORAGE
PIPES
POWER REACTORS
NONBREEDING
LIGHT-WATER MODERATED
NONBOILING WATER COOLED
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REACTOR SAFETY
RISK ASSESSMENT
SAFETY ANALYSIS
STORAGE, TRANSPORT, AND HANDLING