Improving the action requirements of technical specifications: A risk-comparison of continued operation and plant shutdown
- Brookhaven National Lab., Upton, NY (United States). Dept. of Advanced Technology
When the systems needed to remove decay heat are inoperable or degraded, the risk of shutting down the plant may be comparable to, or even higher than, that of continuing power operation with the equipment inoperable while giving priority to repairs. This concern arises because the plant may not have sufficient capability for removing decay heat during the shutdown. However, Technical Specifications (TSs) often require ``immediate`` shutdown of the plant. In this paper, the authors present risk-based analyses of the various operational policy alternatives available in such situations, with an example application to the standby service water (SSW) system of a BWR. These analyses can be used to define risk-effective requirements for those standby safety systems under discussion.
- Research Organization:
- Brookhaven National Lab., Upton, NY (United States)
- Sponsoring Organization:
- Nuclear Regulatory Commission, Washington, DC (United States)
- DOE Contract Number:
- AC02-76CH00016
- OSTI ID:
- 10121203
- Report Number(s):
- BNL-NUREG-60746; CONF-9410216-7; ON: DE95007702; TRN: AHC29509%%181
- Resource Relation:
- Conference: 22. water reactor safety information meeting,Bethesda, MD (United States),24-26 Oct 1994; Other Information: PBD: [1994]
- Country of Publication:
- United States
- Language:
- English
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Improving the action requirements of technical specifications: A risk-comparison of continued operation and plant shutdown
Technical Specification action statements requiring shutdown. A risk perspective with application to the RHR/SSW systems of a BWR
Related Subjects
21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS
BWR TYPE REACTORS
RHR SYSTEMS
RISK ASSESSMENT
AUXILIARY WATER SYSTEMS
SPECIFICATIONS
FAILURES
PWR TYPE REACTORS
AVAILABILITY
REACTOR SHUTDOWN
NUCLEAR POWER PLANTS
ENGINEERED SAFETY SYSTEMS
REACTOR OPERATION
220900
210100
210200
REACTOR SAFETY
POWER REACTORS
NONBREEDING
LIGHT-WATER MODERATED
BOILING WATER COOLED
POWER REACTORS
NONBREEDING
LIGHT-WATER MODERATED
NONBOILING WATER COOLED