Probabilistic analysis of allowed outage times relaxation at a PWR plant
Conference
·
· Trans. Am. Nucl. Soc.; (United States)
OSTI ID:6907115
Technical specifications (TS) in a nuclear power plant are specific requirements on its day-to-day operation, designed to protect public health and safety. Two primary aspects of the TS are (a) limiting conditions of operation with allowed outage times (AOTs) and (b) surveillance testing intervals. In recent years, there has been growing interest in the nuclear community in reexamining the TS. One of the reasons is that a significant portion of reactor downtime (plant unavailability) is attributable to the strict TS. Existing TS were derived from engineering judgment based on deterministic review; they were not directly risk-based, and their efficacy in enhancing public safety is difficult to establish. This paper presents a summary of a critical review of the Westinghouse report, which proposed that AOTs for a number of safety systems at the Byron Generating Station be increased from 3 to 7 days.
- Research Organization:
- Brookhaven National Lab., Upton, NY
- OSTI ID:
- 6907115
- Report Number(s):
- CONF-861102-
- Conference Information:
- Journal Name: Trans. Am. Nucl. Soc.; (United States) Journal Volume: 53
- Country of Publication:
- United States
- Language:
- English
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Probabilistic analysis of allowed outage times relaxation at a PWR plant
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Related Subjects
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WATER COOLED REACTORS
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Light-Water Moderated
Nonboiling Water Cooled
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220900* -- Nuclear Reactor Technology-- Reactor Safety
ACCIDENTS
AVAILABILITY
CONTAINMENT
CONTAINMENT SPRAY SYSTEMS
CONTAINMENT SYSTEMS
COOLING SYSTEMS
ENERGY SYSTEMS
ENGINEERED SAFETY SYSTEMS
FAILURE MODE ANALYSIS
FAULT TREE ANALYSIS
LOSS OF COOLANT
OUTAGES
PERFORMANCE
PROBABILITY
PUMPS
PWR TYPE REACTORS
REACTOR ACCIDENTS
REACTOR COMPONENTS
REACTOR COOLING SYSTEMS
REACTOR CORE DISRUPTION
REACTOR SAFETY
REACTORS
RHR SYSTEMS
RISK ASSESSMENT
SAFETY
SAFETY INJECTION
SPECIFICATIONS
SYSTEM FAILURE ANALYSIS
SYSTEMS ANALYSIS
TESTING
WATER COOLED REACTORS
WATER MODERATED REACTORS