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Effect of americium and simulated fission products addition on oxygen potential of uranium-plutonium mixed oxide fuels

MOX燃料の酸素ポテンシャルに及ぼすAm及びFP添加の影響

田中 康介; 逢坂 正彦; 黒崎 健*; 牟田 浩明*; 宇埜 正美*; 山中 伸介*

Tanaka, Kosuke; Osaka, Masahiko; Kurosaki, Ken*; Muta, Hiroaki*; Uno, Masayoshi*; Yamanaka, Shinsuke*

MOX燃料にAm及びFPを添加した模擬低除染MOX試料を従来の粉末冶金技術を用いて調製し、TG-DTAにより酸素ポテンシャルを測定した。その結果、低除染MOX燃料はFPを含まない燃料よりもわずかに酸素ポテンシャルが上昇することがわかった。また、燃焼度の進展とともに酸素ポテンシャルが上昇することを確認した。

In order to investigate the effect of MAs and FP addition on the oxygen potential of MOX fuels, thermogravimetric analysis (TGA) were carried out. MOX fuels with Am and 26 kinds of fission product elements (FPs), simulating low-decontamination MOX fuel and high burn-up to 250 GWd/t, were prepared by a conventional powder metallurgical route in a glove box. The oxygen potentials for simulating low-decontamination MOX fuels were higher than the fuels without FPs and increased positively with increasing simulated burn-up.

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