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2019年度夏期休暇実習報告; HTTR炉心を用いた原子力電池に関する予備的検討; 核設計のための予備検討,2

Report of summer holiday practical training 2019; Feasibility study on nuclear battery using HTTR core; Feasibility study for nuclear design, 2

石塚 悦男  ; 中島 弘貴*; 中川 直樹*; Ho, H. Q.; 石井 俊晃; 濱本 真平; 高松 邦吉; Kenzhina, I.*; Chikhray, Y.*; 松浦 秀明*; 藤本 望*

Ishitsuka, Etsuo; Nakashima, Koki*; Nakagawa, Naoki*; Ho, H. Q.; Ishii, Toshiaki; Hamamoto, Shimpei; Takamatsu, Kuniyoshi; Kenzhina, I.*; Chikhray, Y.*; Matsuura, Hideaki*; Fujimoto, Nozomu*

2019年度の夏期休暇実習において、HTTR炉心を原子力電池に見立てた場合の核的な予備検討を実施し、MVP-BURNを用いて熱出力5MWで30年の連続運転が可能となる燃料の$$^{235}$$U濃縮度と可燃性毒物に関して検討した。この結果、$$^{235}$$U濃縮度が12%、可燃性毒物の半径及び天然ホウ素濃度が1.5cm及び2wt%の燃料が必要になることが明らかとなった。今後は、炉心の小型化について検討する予定である。

As a summer holiday practical training 2019, the feasibility study for nuclear design of a nuclear battery using HTTR core was carried out, and the $$^{235}$$U enrichment and burnable poison of the fuel, which enables continuous operation for 30 years with thermal power of 5 MW, were studied by the MVP-BURN. As a result, it is clear that a fuel with $$^{235}$$U enrichment of 12%, radius of burnable poison and natural boron concentration of 1.5 cm and 2wt% are required. As a next step, the downsizing of core will be studied.

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