Progress of R&D on geological disposal of high-level radioactive waste (HLW) in Japan

None

石川 博久; 五十嵐 寛; 梅木 博之; 清水 和彦; 宮原 要  ; 石丸 恒存 ; 三ツ井 誠一郎  

Ishikawa, Hirohisa; Igarashi, Hiroshi; Umeki, Hiroyuki; Shimizu, Kazuhiko; Miyahara, Kaname; Ishimaru, Tsuneari; Mitsui, Seiichiro

サイクル機構では、高レベル放射性廃棄物の処分事業と安全規制の双方の基盤的な技術や情報として寄与できるよう、2つの深地層研究施設,地層処分基盤研究施設,地層処分放射化学研究施設等を活用した研究開発を進めている。1999年に公開した「第2次取りまとめ」以降の研究成果については、年報として公開するとともに、これらの年報を基盤とした「平成17年度成果取りまとめ」を2005年に公開する予定である。

Final disposal of high-level radioactive waste is essential issue to utilize nuclear energy. JNC has promoted the research and development on disposal technology to contribute to the implementation and safety regulation in the implementation phase after the legislation of the Act on final disposal. The field of the R&D covers geological environment, engineering of geological disposal and performance assessment. As to the two underground laboratories (URLs), surface-based investigations have been carried out and the constructions of both have already started. On the basis of these investigations, geologic environmental models have been developed. The study on natural phenomena such as volcanism and faulting has been conducted. In the above ground research facilities, the development of advanced models, databases for the long-term evolution of the near-field and engineering technologies has been carried out. In terms of safety assessment methodologies, development of relevant databases and advanced safety assessment models and techniques has been carried out. The H17 report will be published in autumn 2005 for the studies conducted in the surface-based investigation phase at the URLs.