NRC research in common-cause failures
The status and recent history of common-cause failure (CCF) research are briefly reviewed. Current NRC research in the area of CCFs is described with emphasis on the remaining problem areas. These include deficiencies in data and the need to more completely understand the characteristics of CCFs. The concepts and relationships of root cause, coupling mechanisms, and defensive mechanisms are discussed. Key definitions and some in-depth analysis of these concepts are included. An overview of the recent research to be published is presented. This research includes: (1) the cause-defense methodology for analyzing CCFs; (2) guidelines for identifying potential CCFs as part of a nuclear power plant walkdown and procedures review; and (3) requirements for an industry-wide data base, including documentation of failure events and additional component failure and failure mode data requirements to support future PRAs. 5 refs.
- Research Organization:
- Sandia National Labs., Albuquerque, NM (USA)
- DOE Contract Number:
- AC04-76DP00789
- OSTI ID:
- 6735482
- Report Number(s):
- SAND-88-2942C; CONF-8810155-3; ON: DE89001823
- Country of Publication:
- United States
- Language:
- English
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22 GENERAL STUDIES OF NUCLEAR REACTORS
220900* -- Nuclear Reactor Technology-- Reactor Safety
DATA ANALYSIS
LICENSING
NATIONAL ORGANIZATIONS
NUCLEAR FACILITIES
NUCLEAR POWER PLANTS
POWER PLANTS
REACTOR SAFETY
RESEARCH PROGRAMS
RISK ASSESSMENT
SAFETY
SYSTEM FAILURE ANALYSIS
SYSTEMS ANALYSIS
THERMAL POWER PLANTS
US NRC
US ORGANIZATIONS