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The Incorporation of Experience-based Data into the Markov Maintenance Model and an Impact of Changed Maintenance Intervals on Plant Reliability

  • Yoshihiro Oyama
  • Yukihiro Kirimoto
  • Tomoaki Yoshida
  • Koichi Miyata
  • Kazuo Sakuramoto
Conference paper

Abstract

At present, preventive and scheduled maintenance activities are mainly performed at Japanese nuclear power plants. Overhauling and other maintenance activities on equipment are carried out at relatively short intervals mostly during outages. In the U.S., on the other hand, condition-based maintenance are carried out more often than preventive maintenance; however, in recent years, a proper combination of preventive maintenance and condition monitoring activities has been performed based on the information about risks. Moreover, NUREG outlines the Markov Maintenance Model that makes a macroscopic assessment of conditions of equipment. Under these circumstances, much scientific attention is being devoted to an effective mixture of preventive maintenance, condition-based maintenance and corrective maintenance as adopted in the U.S., and to research into reasonable intervals of inspections. This study looks into the rationalization of inspection intervals at Japanese power plants using the Markov Model.

Keywords

Preventive Maintenance Maintenance Activity Diesel Generator Electric Power Industry Corrective Maintenance 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

  1. 1.
    W.E. Vesely, J.T.Rezos Risk-Based Maintenance Modeling Prioritization of Maintenance Importances and Quantification of Maintenance Effectiveness (NUREG/CR-6002), 1995Google Scholar
  2. 2.
    A Matsuzaki, Y. Kirimoto Estimation of Component Failure Rates for PSA on 49 Japanese LWRs 1982–1997, ASME PVP-Val.426 Operations Applications and Components 2001 p85-92Google Scholar

Copyright information

© Springer-Verlag London 2004

Authors and Affiliations

  • Yoshihiro Oyama
    • 1
  • Yukihiro Kirimoto
    • 1
  • Tomoaki Yoshida
    • 1
  • Koichi Miyata
    • 2
  • Kazuo Sakuramoto
    • 2
  1. 1.Nuclear Information CenterCentral Research Institute of Electric Power IndustryTokyoJapan
  2. 2.In-Core Fuel Management DeptTEPCO Systems CorporationTokyoJapan

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