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ナトリウム中目視検査装置の開発,1; 開発要求の整理

Development of under sodium viewer, 1; Development requirement

相澤 康介 ; 近澤 佳隆  ; 荒 邦章 ; 谷口 善洋*; 由井 正弘*

Aizawa, Kosuke; Chikazawa, Yoshitaka; Ara, Kuniaki; Taniguchi, Yoshihiro*; Yui, Masahiro*

ナトリウム冷却高速炉は不透明なナトリウムを冷却材として用いていることから、ナトリウムに浸かった原子炉容器内等の保守補修の観点より各国でナトリウム中目視検査装置の開発が進められてきた。本研究では、電気出力750MWeのナトリウム冷却高速炉の原子炉構造及び保守補修方針を踏まえ、これらに適合するナトリウム中目視検査装置の開発要求を整理するとともに、要素技術の高度化を実施した。

Inspection technique in opaque liquid metal coolant is one of the important issues for safety warranty of Liquid Metal Fast Breeder Reactor (LMFBR) core. To facilitate operations and maintenance activities, an under sodium viewer (USV) has been developed in several research institutes and countries. In this study, the requirement of USV for the 750 MWe sodium fast breeder reactor was made clear on the basis of the reactor structure and the policy for the maintenance and repair. In addition, the sophistication of element technology for the USV was conducted.

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