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再処理施設における分析/試験由来の高放射性固体廃棄物の処理技術

Treatment technology of highly radioactive solid waste generated by experimental tests and sample analysis in reprocessing facilities

後藤 雄一; 稲田 聡; 久野 剛彦; 森 英人*

Goto, Yuichi; Inada, Satoshi; Kuno, Takehiko; Mori, Eito*

東海再処理施設の小型試験設備試験セルにおける使用済燃料片等を用いた試験及び分析セルラインにおける高放射性試料の分析で発生した器具・容器類は、高放射性固体廃棄物として処理される。これらは、輸送容器と呼ばれる遮蔽付きの専用容器に収納されたのち、保管施設へと運搬される。高放射性固体廃棄物の処理については、これまで約40年間実施しており、その間、廃棄物取出し機構と運搬機器等の改良を加えてきた。その結果、従来設備を活かしながら自動化が図れ、作業効率,安全性の向上を達成することができた。

Test equipment, containers, and analytical wastes, generated by experiments using spent fuel pieces in hot cell of Operation Testing Laboratory and by analysis of highly active liquid wastes in hot analytical cell line of Tokai Reprocessing Plant, are treated as highly radioactive solid wastes. These wastes are stored in specific shielded containers called waste cask and then transport to the storage facility. The treatment of these highly radioactive solid wastes have been carried out for 40 years with upgrading waste taking out system and transportation device. As a results, automation of several procedures have been achieved utilizing conventional equipment, and work efficiency and safety have been improved.

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