Mitigating Systems Performance Index Baselines

  • Steven Eide
  • Douglas Zeek
Conference paper


This paper discusses the technical assessment of recommended train unavailability and component unreliability baselines for the US Nuclear Regulatory Commission Mitigating Systems Performance Index. To perform this evaluation, recent data were compared with the recommended baselines. Comparisons indicate that the recommended baselines appear to accurately represent recent (1999 – 2001) industry experience.


Failure Probability Nuclear Regulatory Commission Industry Experience Probabilistic Risk Assessment Mitigate System 


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    Regulatory assessment performance indicator guideline (section 2.2, “mitigating system performance index” and appendix F, “methodologies for computing the unavailability index, the unreliability index, and determining performance index validity”). NEI 99-02 (draft report). Nuclear Energy Institute, 2002.Google Scholar
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    Eide SA. Historical perspective on failure rates for US commercial reactor components. Reliab Engng Syst Safety 2003; 80: 123–132.CrossRefGoogle Scholar
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    Equipment performance and information exchange system (EPIX), volume 1 — instructions for data entry, maintenance rule and reliability information module. INPO 98-001. The Institute of Nuclear Power Operations, 1998.Google Scholar
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    Poloski JP et al. Reliability study: auxiliary/emergency feedwater system, 1987-1995. NUREG/CR-5500, Vol. 1. US Nuclear Regulatory Commission, 1998.Google Scholar

Copyright information

© Springer-Verlag London 2004

Authors and Affiliations

  • Steven Eide
    • 1
  • Douglas Zeek
    • 1
  1. 1.INEELIdaho FallsUSA

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