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Development of an advanced fabrication process for fast reactor MOX fuel pellets

高速炉用MOX燃料の燃料製造技術の開発

加藤 正人; 瀬川 智臣; 武内 健太郎; 鹿志村 元明; 木原 義之

Kato, Masato; Segawa, Tomoomi; Takeuchi, Kentaro; Kashimura, Motoaki; Kihara, Yoshiyuki

原子力機構では、高速炉リサイクル技術(FaCTプロジェクト)の開発のために、マイナーアクチニド含有MOXの開発を進めている。その燃料は、最大5%のマイナーアクチニドを含有する低O/Mの均質燃料である。この燃料の製造技術を確立するために、原料粉末の熱特性と、酸化原料を用いたペレット調製及びO/M調製に関する研究を実施した。

In the Fast Reactor Cycle technology Development (FaCT) project conducted by Japan Atomic Energy Agency, minor actinide-containing MOX (MA-MOX) fuel has been developed. The fuel is a homogeneous MOX fuel which contains a maximum of 5% MA such as Am and Np. The oxygen-to-metal (O/M) ratio of the fuel is adjusted to less than 1.97 to control fuel and cladding chemical interaction in a high burn-up of 150 GWd/t. In this paper, the thermal properties of raw powder and sintering behavior of oxidized powder were investigated. In addition the O/M ratio adjustment procedure was established.

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