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Conceptual design on an integrated metal fuel recycle system

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佐藤 浩司; 藤岡 綱昭; 中林 弘樹 ; 北島 庄一; 横尾 健*; 井上 正*

Sato, Koji; Fujioka, Tsunaaki; Nakabayashi, Hiroki; Kitajima, Shoichi; Yokoo, Takeshi*; Inoue, Tadashi*

FBRサイクルの実用化戦略調査研究の一環として、38tHM/y処理規模の金属燃料リサイクルシステムについて、経済性、操業性、安全性、環境負荷低減性、核拡散抵抗性等に配慮したシステム設計を実施した。その結果、4対の電極を装荷した大電解槽や続処理方式の陰極処理装置等の採用、質量管理と化学形態管理等を行うことにより、臨界安全性を担保しつつ処理速度の向上が図れる見通しを得た。また、同処理規模の先進湿式リサイクルシステムとのセル、建屋容積、廃棄物発生量の比較により、小型プラントの乾式システムの経済性、環境負荷低減性の観点からの優位性が示された。

We have been performing the feasibility study on conceptual design for an integrated metallic fuel recycle plant of 38 tHM/y throughput. As a result of this study, the process concept was constructed, and the main equipment and devices were designed considering rationalixation,operationability, reduction of environmental impact and safety for the future commercialization. Furthermore, the image of the whole building included in cells was examined. In particular, the electrorefiner was enlarged from its current size and the cathode processor was improved from the current batch type to the continuation type to increase throughput. The plant was evaluated comprehensively. We confirmed that the major specifications for plant design would be satisfied. The economical cometitiveness of the plant has been evaluated.

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