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Small LBE-Cooled Fast Reactor for Expanding Market

[+] Author Affiliations
Hiroshi Sekimoto

Tokyo Institute of Technology, Tokyo, Japan

Shinichi Makino

Nissan Motor Company, Ltd., Yokosuka, Kanagawa, Japan

Kunihiko Nakamura, Yoshio Kamishima

Advanced Reactor Technology Company, Ltd., Tokyo, Japan

Takashi Kawakita

Mitsubishi Heavy Industries, Ltd., Yokohama, Japan

Paper No. ICONE10-22049, pp. 483-490; 8 pages
  • 10th International Conference on Nuclear Engineering
  • 10th International Conference on Nuclear Engineering, Volume 2
  • Arlington, Virginia, USA, April 14–18, 2002
  • Conference Sponsors: Nuclear Engineering Division
  • ISBN: 0-7918-3596-0 | eISBN: 0-7918-3589-8
  • Copyright © 2002 by ASME


A long-life safe simple small portable proliferation-resistant reactor is expected to solve many problems associating future energy and globally environmental problems. From discussions on mainly neutronics and safety points it has been shown that the heavy liquid metal cooled fast reactor is the best candidate to satisfy the above requirements. A lead-bismuth-eutectic (LBE) cooled fast reactor LSPR (L BE-Cooled L ong-L ife Safe Simple Small P ortable P roliferation-R esistant R eactor) has been designed and continues to be improved. In the present paper a recent version of LSPR is presented. The total power of the present design is 150 MWt (53MWe). During whole reactor life of 12 years the excess reactivity required for burnup is very low, and negative coolant dilatation coefficient is confirmed. This characteristic together with some other characteristics makes unprotected loss of flow (ULOF) accident inherently safe. It can survive even simultaneous rod run-out transient over power (UTOP), ULOF and unprotected loss of heat sink (ULOHS) accident without the help of an operator or active device.

Copyright © 2002 by ASME



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