Instrument air system - Aging impact on system availability
Description
The effects of aging on instrument air (IA) systems in Nuclear Power Stations have been studied as part of the Nuclear Plant Aging Research (NPAR) Program. The aging phenomena has been characterized by analyzing operating experience from actual plant maintenance records. In addition, various national data bases were utilized to obtain instrument air system data to supplement and validate the plant data base findings. Time-dependent failure rates were calculated for several components to identify aging trends. A computer program was developed and implemented to model a typical IA system and perform time-dependent Probabilistic Risk Assessment calculations. Using the time-dependent failure rates calculated from the data, the effects of aging on system unavailability and component importance were investigated
Additional details
Publishing Information
- Imprint Title
- Seventeenth water reactor safety information meeting: Proceedings. Volume 3, Primary systems integrity; plant performance, testing and analysis; piping and NDE [nondestructive examination]; plant aging
- Imprint Pagination
- 529 p.
- Journal Page Range
- p. 453-471.
- Report number
- NUREG/CP--0105-Vol.3
Conference
- Title
- 17. water reactor safety information meeting.
- Dates
- 23-25 Oct 1989.
- Place
- Rockville, MD (USA).
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 22091256
- Subject category
- S21: SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS; S21: SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS;
- Resource subtype / Literary indicator
- Conference
- Descriptors DEI
- AGING; AVAILABILITY; BWR TYPE REACTORS; DATA BASE MANAGEMENT; DOCUMENTATION; FAILURES; PWR TYPE REACTORS; REACTOR COMPONENTS; REACTOR INSTRUMENTATION; REACTOR MAINTENANCE; REACTOR SAFETY; RESEARCH PROGRAMS; RISK ASSESSMENT; SPECIFICATIONS; TIME DEPENDENCE; US NRC; VERIFICATION
- Descriptors DEC
- ENRICHED URANIUM REACTORS; MAINTENANCE; MANAGEMENT; NATIONAL ORGANIZATIONS; POWER REACTORS; REACTORS; SAFETY; THERMAL REACTORS; US ORGANIZATIONS; WATER COOLED REACTORS; WATER MODERATED REACTORS
Optional Information
- Secondary number(s)
- CONF-8910222--Vol.3.