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Fabrication and short-term irradiation behaviour of Am-bearing MOX fuels

Am含有MOX燃料の製造と短期照射挙動

木原 義之; 田中 康介; 小山 真一; 吉持 宏; 関 崇行; 勝山 幸三

Kihara, Yoshiyuki; Tanaka, Kosuke; Koyama, Shinichi; Yoshimochi, Hiroshi; Seki, Takayuki; Katsuyama, Kozo

MOX燃料の照射挙動におよぼすAm添加の影響を確認するため、高速実験炉「常陽」において照射試験(Am-1)を実施している。Am-1は短期照射試験と定常照射試験からなり、短期照射試験とその照射後試験は終了している。本報告では、照射燃料試験施設(AGF)で実施したAm-1用のAm-MOX燃料における遠隔製造の詳細な条件を述べるとともに、10分間及び24時間照射Am-MOX燃料の非破壊及び破壊照射後試験結果について紹介する。

In order to investigate the effect of the addition of americium to MOX fuels on the irradiation behaviour, the "Am-1" program is being conducted at the JAEA. The Am-1 program consists of two short-term irradiation tests of 10-min and 24-h irradiation periods, and a steady-state irradiation test. The short-term irradiation tests and their post irradiation examinations (PIEs) have been successfully completed. To date, the data for PIE of the Am-MOX fuels focused on the microstructural evolution and redistribution behaviour of Am at the initial stage of irradiation have been obtained and reported. In this paper, the results obtained from the Am-1 program are reviewed and detailed descriptions of the fabrication and inspection techniques for the Am-MOX fuels prepared for the program are provided. PIE data for the Am-MOX fuels at the initial stage of irradiation have been accumulated. In this paper, unpublished PIE data for the Am-MOX fuels are also presented.

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