Issues and approaches in risk-based aging analyses of passive components

Conference · Thu Sep 01 04:00:00 EDT 1994

OSTI ID:10181840

Uryasev, S P; Samanta, P K ^[1]; Vesely, W E ^[2]

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1. Brookhaven National Lab., Upton, NY (United States)
2. Science Applications International Corp., Columbus, OH (United States)

In previous NRC-sponsored work a general methodology was developed to quantify the risk contributions from aging components at nuclear plants. The methodology allowed Probabilistic Risk Analyses (PRAs) to be modified to incorporate the age-dependent component failure rates and also aging maintenance models to evaluate and prioritize the aging contributions from active components using the linear aging failure rate model and empirical components aging rates. In the present paper, this methodology is extended to passive components (for example, the pipes, heat exchangers, and the vessel). The analyses of passive components bring in issues different from active components. Here, we specifically focus on three aspects that need to be addressed in risk-based aging prioritization of passive components.

• 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: 10181840
• Report Number(s): BNL-NUREG--60392; CONF-941142--21; ON: DE94018671
• Country of Publication: United States
• Language: English

Related Subjects

22 GENERAL STUDIES OF NUCLEAR REACTORS
220200
220900
AGING
COMPONENTS AND ACCESSORIES
INTERGRANULAR CORROSION
PIPES
PROBABILISTIC ESTIMATION
REACTOR COMPONENTS
REACTOR SAFETY
SAFETY ANALYSIS