Abstracts and Available Papers Presented at the
2002 International RERTR Meeting

STATUS OF REDUCED ENRICHMENT PROGRAM FOR RESEARCH REACTORS IN JAPAN

Kenichi Shimizu

Japan Atomic Energy Research Institute
Shirakata Shirane 2-4, Tokai-mura, Naka-gun, Ibaraki-ken 319-1195, Japan

Yoshihiro Nakagome

Research Reactor Institute, Kyoto University
Kumatori-cho, Sennan-gun, Osaka 590-0494, Japan
Tel:  +81-724-51-2358
Fax:  +81-724-51-2608

ABSTRACT

The reduced enrichment programs for the JRR-3M, JRR-4 and JMTR of Japan Atomic Energy Research Institute (JAERI) has been completed by 1999.

The KUR of Kyoto University Research Reactor Institute (KURRI) has been partially completed and is still in progress under the Joint Study Program with Argonne National Laboratory (ANL).

The JRR-3M using LEU silicide fuel elements had done a functional test by the Japanese Government in 2000, and the property of the reactor core was satisfied. 

JAERI established a "U-Mo fuel ad hoc committee" for feasibility study concerning future LEU fuel instead of the silicide fuel in 2001, and an installation of the U-Mo fuel was estimated from 2011, even the irradiation tests are carried out successfully.

U.S. Policy of Foreign Research Reactor Spent Nuclear Fuels is strongly expected to expand the policy.

The Japanese Government approved a cancellation of the KUHFR Project in February 1991, and in April 1994 the U.S. Government gave an approval to utilize HEU fuel in the KUR instead of the KUHFR. Therefore, the KUR will be operated with HEU fuel until March 2006, then the full core conversion with LEU fuels will be done. All KUR spent fuel elements will be sent to the U.S. by March 2008.

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