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Studies on Maintainability and Repairability for Japan Sodium-Cooled Fast Reactor (JSFR)

[+] Author Affiliations
Kenichi Isono, Shigenobu Kubo, Yoshitaka Chikazawa

Japan Atomic Energy Agency (JAEA), O-arai, Ibaraki, Japan

Koji Dozaki

Japan Atomic Power Company (JAPC), Tokyo, Japan

Takeaki Oya, Masahiro Yui

Mitsubishi FBR Systems, Inc. (MFBR), Tokyo, Japan

Paper No. ICONE22-30175, pp. V003T05A007; 7 pages
  • 2014 22nd International Conference on Nuclear Engineering
  • Volume 3: Next Generation Reactors and Advanced Reactors; Nuclear Safety and Security
  • Prague, Czech Republic, July 7–11, 2014
  • Conference Sponsors: Nuclear Engineering Division
  • ISBN: 978-0-7918-4593-6
  • Copyright © 2014 by ASME


Aiming at enabling maintenance and repair of almost all components in JSFR demonstration reactor to a level equivalent to that attained for the light water reactors, we identified a number of parts which have difficulty in maintenance and repair in main components of the reactor structure and the primary/secondary main coolant system. And we defined the criteria for design improvement and then provided candidates of improvement measures for the identified parts.

Furthermore, we made a modification of the plant design in a consistent manner integrating the improvements investigated for each major component. A series of evaluations were conducted to check the feasibility as a power plant. As the result, we found that the concept could be adopted not only to the demonstration reactor (750MWe) but to the commercial one (1500MWe).

Copyright © 2014 by ASME



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