[1M14-19] Criticality Safety 2

[1M16] Criticality control technique development for Fukushima Daiichi fuel debris

(47)Measurement of nuclear reactivity of insoluble absorber by using KUCA test facility

*Yuta Shindo^1,2, Kazuya Ishii^1,3, Tsuyoshi Misawa⁴, Yasunori Kitamura⁴ (1. International Research Institute for Nuclear Decommissioning, 2. Toshiba Energy Systems & Solutions Corporation, 3. Hitachi-GE Nuclear Energy, Ltd, 4. Kyoto University)

Keywords:insoluble neutron absorber, fuel debris, nuclear characteristic, Kyoto University Critical Assembly

1F燃料デブリ取り出し時の再臨界防止用に開発を進めている非溶解性中性子吸収材（以下、吸収材）4種類ついて、臨界試験を行い、中性子吸収能力を実証し、計算コードによる予測精度を確認した。