Development of mechanical disassembly and shearing systems for FBR spent fuel in FaCT project

FaCTプロジェクトにおけるFBR燃料再処理用解体せん断技術開発

鷲谷 忠博 ; 北垣 徹  ; 樋口 英俊; 小泉 健治 ; 小林 嗣幸*; 小山 智造; 田坂 應幸*

Washiya, Tadahiro; Kitagaki, Toru; Higuchi, Hidetoshi; Koizumi, Kenji; Kobayashi, Tsuguyuki*; Koyama, Tomozo; Tasaka, Masayuki*

機械式切断方式を採用したFBR燃料の解体システム及び短尺せん断技術を採用したせん断システムの要素試験及び工学規模試験の概要を報告する。

JAEA have been developing a reliable fuel disassembly and shearing systems in cooperation with Japan Atomic Power Company (JAPC). We proposed a disassembly system utilizing mechanical cutting and pulling method. We designed and fabricated an engineering-scale test device, and confirming the system performance by using the simulated fuel assembly. And we proposed new shearing procedure as short-stroke cutting to provide highly fragmented fuel to realize efficient fuel dissolution required from the uranium crystallization process. We designed and fabricated the fuel transfer device and carried out some experiment to confirm that the fuel fragmentation rate and shared stroke was chosen to be 1 cm. In this paper, we will report the latest experiment for these systems.