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JT-60本体室における高周波加熱装置の解体検討

Study on disassembly work of the radio frequency heating system in the JT-60 torus hall

横倉 賢治; 下野 貢; 鈴木 貞明; 澤畠 正之; 五十嵐 浩一; 和田 健次; 森山 伸一

Yokokura, Kenji; Shimono, Mitsugu; Suzuki, Sadaaki; Sawahata, Masayuki; Igarashi, Koichi; Wada, Kenji; Moriyama, Shinichi

本報告は、大型トカマク実験装置JT-60Uの次期装置であるJT-60SAの建設に伴う、JT-60U高周波加熱装置の解体作業のうちJT-60本体室内の解体作業について検討した結果をまとめたものである。同作業においてはトリチウム汚染物や中性子による放射化物を取り扱う必要があるため、作業安全管理に十分配慮して検討を行い、(1)作業対象,(2)作業内容,(3)物量の推定,(4)解体手順方法のそれぞれについてまとめた。

This report summarized the studies on the disassemble work of radio frequency heating system in the torus hall as a preparation for the construction of JT-60SA (super advanced) which is the upgrade of the present large tokamak, JT-60U. The studies of the disassembly work were done with emphasis on the safety management because the work requires treatment of contaminated material with tritium and radiated material by neutron, and (1) object for disassemble, (2) work plan, (3) estimation of materials amount, and (4) procedure were summarized.

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