Operating experience and aging assessment of component cooling water systems
Conference
·
OSTI ID:5425016
Aging of Component Cooling Water (CCW) Systems in nuclear plants has been characterized using the Aging and Life Extension Assessment Program (ALEAP) Systems Level Plan developed by Brookhaven National Laboratory. Failure data from various national data bases were reviewed and analyzed to identify predominant CCW failure modes, causes and mechanisms. Time dependent failure rates for major components were calculated to identify aging trends. Plant specific data were obtained and evaluated to supplement data base results. A computer program (PRAAGE) was developed and implemented to model a typical CCW system design and perform PRA calculations. Time dependent failure rates were input to the program to evaluate the effects of aging on component importance and system unavailability. Changes in both component importance and system unavailability with age were observed and are discussed. 10 refs., 15 figs.
- Research Organization:
- Brookhaven National Lab., Upton, NY (USA)
- DOE Contract Number:
- AC02-76CH00016
- OSTI ID:
- 5425016
- Report Number(s):
- BNL-NUREG-40748; CONF-8710111-33; ON: DE88006362
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS
210100 -- Power Reactors
Nonbreeding
Light-Water Moderated
Boiling Water Cooled
210200* -- Power Reactors
Nonbreeding
Light-Water Moderated
Nonboiling Water Cooled
99 GENERAL AND MISCELLANEOUS
990220 -- Computers
Computerized Models
& Computer Programs-- (1987-1989)
AGING
AVAILABILITY
BWR TYPE REACTORS
COMPUTER CODES
COOLING SYSTEMS
DATA BASE MANAGEMENT
ENERGY SYSTEMS
FAILURES
MANAGEMENT
P CODES
PWR TYPE REACTORS
REACTOR COMPONENTS
REACTOR COOLING SYSTEMS
REACTORS
RISK ASSESSMENT
SERVICE LIFE
WATER COOLED REACTORS
WATER MODERATED REACTORS
210100 -- Power Reactors
Nonbreeding
Light-Water Moderated
Boiling Water Cooled
210200* -- Power Reactors
Nonbreeding
Light-Water Moderated
Nonboiling Water Cooled
99 GENERAL AND MISCELLANEOUS
990220 -- Computers
Computerized Models
& Computer Programs-- (1987-1989)
AGING
AVAILABILITY
BWR TYPE REACTORS
COMPUTER CODES
COOLING SYSTEMS
DATA BASE MANAGEMENT
ENERGY SYSTEMS
FAILURES
MANAGEMENT
P CODES
PWR TYPE REACTORS
REACTOR COMPONENTS
REACTOR COOLING SYSTEMS
REACTORS
RISK ASSESSMENT
SERVICE LIFE
WATER COOLED REACTORS
WATER MODERATED REACTORS