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EJAM Vol.2 pp.65-76 "Inspection, Evaluation and Maintenance Guidelines for Reactor Vessel Internals in JAPAN "
Vol.2 No.1 previous GA 13 - AA 15 - SP2 (16 - 17 - 18) - NT 23 - 24 - 25 next Vol.2 No.3
Academic Articles
Review Paper (Invited) Vol.2 (2010) p.77 - p.81

Inspection, Evaluation and Maintenance Guidelines for Reactor Vessel Internals in JAPAN

Akihiro SAKASHITA1,*,Tomoya GOTO1, Shinro HIRANO2, and Koji DOZAKI3
1 Tokyo Electric Power Company, 1-1-3 Uchisaiwai-cho, Chiyoda-ku, Tokyo 100-8560, Japan
2 The Kansai Electric Power Company, 13-8 Goichi, Mihama-cho, Mikata-gun, Fukui 919-1141, Japan
3 The Japan Atomic Power Company, 1-1 Kanda-Mitoshiro-cho, Chiyoda-ku, Tokyo 101-053, Japan

Inspection and Evaluation Guidelines for reactor internals has been taken into the Rules on Fitness-for–Service for Nuclear Power Plants of The Japan Society of Mechanical Engineers. It is a base of the maintenance plan of each Nuclear Power Plant. A plant maintenance methodology will have more importance to maintain the plant safety and stable plant operation. This paper introduces the systematization of the maintenance such as repair, replacement, preventive maintenance in these guidelines. Maintenance methodologies are classified follows.

  • Repair : methodology to reinforce degraded parts by some methods or prevent progress of degradation of without replacement of the existing structure when the degradation of structure is actualized.
  • Replacement : methodology to replace the existing structure with new one when the degradation of structure is actualized.
  • Preventive maintenance : methodology to mitigate the damaged condition.

When the maintenance methodologies are implemented in the actual plant, we have to consider the feedback of the inspection program and plant life management.

Inspection and Evaluation, Guideline, reactor vessel internals, repair, preventive maintenance
Full Paper: PDF
Article Information
Article history:
Received 17 May 2010
Accepted 2 August 2010