Degradation modeling with application to aging and maintenance effectiveness evaluations
- Brookhaven National Lab., Upton, NY (USA)
- Science Applications International Corp., San Diego, CA (USA)
This paper describes a modeling approach to analyze component degradation and failure data to understand the aging process of components. As used here, degradation modeling is the analysis of information on component degradation in order to develop models of the process and its implications. This particular modeling focuses on the analysis of the times of component degradations, to model how the rate of degradation changes with the age of the component. The methodology presented also discusses the effectiveness of maintenance as applicable to aging evaluations. The specific applications which are performed show quantitative models of component degradation rates and component failure rates from plant-specific data. The statistical techniques which are developed and applied allow aging trends to be effectively identified in the degradation data, and in the failure data. Initial estimates of the effectiveness of maintenance in limiting degradations from becoming failures also are developed. These results are important first steps in degradation modeling, and show that degradation can be modeled to identify aging trends. 2 refs., 8 figs.
- Research Organization:
- Brookhaven National Lab., Upton, NY (USA)
- Sponsoring Organization:
- USNRC
- DOE Contract Number:
- AC02-76CH00016
- OSTI ID:
- 6492392
- Report Number(s):
- BNL-NUREG-45309; CONF-9010185-10; ON: DE91004004; TRN: 90-037611
- Resource Relation:
- Conference: 18. water reactor safety information meeting, Gaithersburg, MD (USA), 22-24 Oct 1990
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
99 GENERAL AND MISCELLANEOUS//MATHEMATICS, COMPUTING, AND INFORMATION SCIENCE
NUCLEAR POWER PLANTS
REACTOR COMPONENTS
AGING
FAILURES
MAINTENANCE
MATHEMATICAL MODELS
PROBABILITY
PUMPS
SERVICE LIFE
STATISTICAL MECHANICS
MECHANICS
NUCLEAR FACILITIES
POWER PLANTS
THERMAL POWER PLANTS
220200* - Nuclear Reactor Technology- Components & Accessories
990200 - Mathematics & Computers