Cable Failure Modes and Effects Risk Analysis Perspectives
A March 1975 cable fire at the Browns Ferry Nuclear Power Plant in the United States provided new insights into the impact of fire-induced cable damage on electrical circuits. New fire protection requirements promulgated by the USNRC following this fire require that licensee to conduct a post-fire safe shutdown analysis that includes consideration of fire-induced circuit effects. Cable failure modes and effects circuit analysis is an ongoing area of technical challenge and regulatory focus. Effort are underway to develop risk-informed approaches to resolution of the remaining challenges.
KeywordsShort Circuit Fire Protection Fault Mode National Fire Protection Association Probabilistic Risk Assessment
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- 1.J. LaChance, S. P. Nowlen, F. Wyant and V. Dandini, Circuit Analysis — Failure Mode and Likelihood Analysis, NUREG/CR-6834, USNRC: September, 2003.Google Scholar
- 2.U.S. Code of Federal Regulations, Title 10, Energy, Pt. 50, Domestic Licensing of Production and Utilization Facilities, Appendix R, Fire Protection Program for Nuclear Power Facilities Operating Prior to January 1 1979. Google Scholar
- 3.“Use of Probabilistic Risk Assessment Methods in Nuclear Activities: Final Policy Statement,” USNRC, Federal Register, V60, p.42622: Aug. 16, 1995.Google Scholar
- 4.“An Approach for Using Probabilistic Risk Assessment In Risk-Informed Decisions On Plant-Specific Changes to the Licensing Basis,” Regulatory Guide 1.174, USNRC: July 1998.Google Scholar
- 5.NFPA, Performance-Based Standard for Fire Protection for Light Water Reactor Electric Generating Plants, National Fire Protection Association Standard 805, 2001 Edition.Google Scholar
- 6.Fire Protection Significance Determination Process, IMC 0609 Appendix F, USNRC: Feb., 2001.Google Scholar
- 7.Fire Protection For Nuclear Power Plants, Regulatory Guide 1.189, USNRC: Apr. 2001.Google Scholar
- 8.Wyant, F.J., Nowlen, S.P., Cable Insulation Resistance Measurements Made During Cable Fire Tests, NUREG/CR-6776, USNRC: June 2002.Google Scholar
- 9.Characterization of Fire-Induced Circuit Faults: Results of Cable Fire Testing, EPRI, Palo Alto, CA: 2002. 1003326.Google Scholar
- 10.Nowlen, S.P., Kazarians, M., Wyant, F., Risk Methods Insights Gained from Fire Incidents, NUREG/CR-6738, USNRC: September 2001.Google Scholar