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T製造用高温ガス炉におけるLi核発熱及びそのT閉じ込め性能への影響

Li nuclear heat generation in the HTGR for T production and effect on T containment performance

古賀 友稀*; 松浦 秀明*; 片山 一成*; 大塚 哲平*; 後藤 実  ; 濱本 真平  ; 石塚 悦男   ; 中川 繁昭  ; 飛田 健次*

Koga, Yuki*; Matsuura, Hideaki*; Katayama, Kazunari*; Otsuka, Teppei*; Goto, Minoru; Hamamoto, Shimpei; Ishitsuka, Etsuo; Nakagawa, Shigeaki; Tobita, Kenji*

GTHTR300にLi化合物を装荷してトリチウムを製造する場合について、設計した照射キャプセルのトリチウム閉じ込め性能の評価を行った。照射キャプセルからのトリチウムの流出量の計算は、炉心温度の他に新たに$$^{6}$$Li(n,$$alpha$$)T反応の核発熱を考慮して行った。その結果、核発熱を考慮することで、Tの流出量は従来の計算結果より15%低下し、閉じ込め性能が向上した。

The tritium confinement performance of the designed irradiation capsule was evaluated for the case where tritium was produced by loading Li compound into GTHTR300. Calculation of tritium outflow from the irradiation capsule was performed taking into account the nuclear heat generation of the $$^{6}$$Li(n,$$alpha$$)T reaction in addition to the core temperature. As a result, by taking into account nuclear heat, the outflow of T was reduced by 15% from the previous calculation results, and the confinement performance was improved.

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