Analysis and quantification of common-cause failures on the basis of operating experience
The problem of analyzing and quantifying common-cause failures (CCFs) is fundamental in conducting probabilistic safety studies. The use of experience feedback is crucial in addressing this problem, and it is possible to draw in a complementary manner on national experience feedback data bases and ad hoc on-site audits. These two approaches differ in objectives and methods, but are both equally necessary. In this paper, the use of these two approaches and the results obtained are analyzed and are illustrated by two concrete examples: (1) a national collection of >1200 event and failure records concerning the problem of CCFs in EdF 900-MW (electric) units; and (2) an analysis based on audits carried out at an EdF 1300-MW(electric) reactor site.
- Research Organization:
- Electricite de France, 75 - Paris (France)
- OSTI ID:
- 5767219
- Journal Information:
- Nucl. Technol.; (United States), Vol. 84:3
- Country of Publication:
- United States
- Language:
- English
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NUCLEAR POWER PLANTS
RISK ASSESSMENT
REACTOR ACCIDENTS
DATA ANALYSIS
DATA BASE MANAGEMENT
ETIOLOGY
FAILURES
OPERATION
PROBABILISTIC ESTIMATION
REACTOR SAFETY
SURVEYS
ACCIDENTS
MANAGEMENT
NUCLEAR FACILITIES
POWER PLANTS
SAFETY
THERMAL POWER PLANTS
220900* - Nuclear Reactor Technology- Reactor Safety
220400 - Nuclear Reactor Technology- Control Systems