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Development and demonstration of ATR-MOX fuel

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安部 智之; 前田 誠一郎; 中沢 博明

Abe, Tomoyuki; Maeda, Seiichiro; Nakazawa, Hiroaki

新型転換炉(ATR: Advanced Thermal Reactor)原型炉「ふげん」は、平成15年3月に運転を終了した。25年間の運転期間中に、単一の熱中性子炉としては世界最多のMOX燃料を装荷し、世界に先駆けてプルトニウムの本格利用を果たしてきたと言える。このATR燃料の開発と実績について報告する。

Japan Nuclear Cycle Development Institute (JNC) developed plutonium and uranium mixed oxide (MOX) fuels for an advanced thermal reactor (ATR) for a flexible utilization of plutonium. JNC made endeavors to obtain well-homogenized MOX pellets by a ball mill mixing method with a variety of raw powders, including MOX powder by a microwave-heating denitration process. A total of 772 MOX fuel assemblies were utilized in the ATR prototype reactor

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