Development of the reasonable confirmation methods concerning radioactive wastes from research facilities

研究施設等廃棄物の合理的な廃棄確認方法の開発

林 宏一 ; 岡田 翔太; 出雲 沙理 ; 星野 譲; 辻 智之 ; 仲田 久和 ; 坂井 章浩 ; 天澤 弘也; 坂本 義昭 

Hayashi, Hirokazu; Okada, Shota; Izumo, Sari; Hoshino, Yuzuru; Tsuji, Tomoyuki; Nakata, Hisakazu; Sakai, Akihiro; Amazawa, Hiroya; Sakamoto, Yoshiaki

日本では、原子力発電所から発生した低レベル放射性廃棄物の浅地中埋設処分は実施されているが、それ以外の研究炉やRI使用施設等から発生する放射性廃棄物の浅地中埋設処分は実施されていない。このため、原子力機構は日本における研究施設等廃棄物の実施主体となり、処分に向けた活動を行っている。本報告では、研究施設等から発生した廃棄物の合理的な廃棄確認方法の開発に焦点を当てた活動の成果を報告する。

A near surface disposal for low-level radioactive waste (LLW) generated from commercial nuclear power plants (NPP) is operating in Japan. However, the disposal of LLW from other nuclear facilities and radioisotope utilization facilities has not yet been implemented. Japan Atomic Energy Agency (JAEA) plans to implement the near surface disposal. In order to be disposed of these wastes, it must be confirmed by the regulator that each waste package (radioactive waste solidified with filling materials, such as cement, in a container by a regulated method is termed a waste package) conforms to technical standards that aim for safe disposal. JAEA has studied reasonable confirmation methods to demonstrate the conformity of the waste package to the technical standard as NPP operators have studied it. This report describes the outline of our activities focused on development of the confirmation method applicable to radioactive wastes from research facilities.