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Report No.

Current status of research and development of supercritical water cooled fast reactor (super fast reactor) in Japan

Nakatsuka, Toru; Oka, Yoshiaki*; Ishiwatari, Yuki*; Okumura, Keisuke; Nagasaki, Shinya*; Tezuka, Kenichi*; Mori, Hideo*; Ezato, Koichiro; Akasaka, Naoaki; Nakazono, Yoshihisa*; Terai, Takayuki*; Muroya, Yusa*; Yamakawa, Masatake*

Pressure-vessel-type supercritical water cooled reactors (SCWRs) have been developed at the University of Tokyo (UT) since 1989 and are studied in Japan, Europe and other countries. UT's concepts of the reactor are termed "Super LWR" for thermal neutron spectrum and "Super Fast Reactor (FR)" for fast spectrum respectively. With the scope of developing an economical fast reactor system, a Japanese research project of the "Super FR" had been conducted since December 2005 to March 2010. UT, Kyushu University, Japan Atomic Energy Agency and Tokyo Electric Power Company have participated in the project. It consisted of three subjects: (1) development of the Super FR concept, (2) thermal-hydraulic experiments and (3) materials developments. All items have successfully finished. The present paper will summarize the results of the project.



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