Implementation of decontamination technologies appropriate to Japanese boundary conditions

除染技術について

川瀬 啓一 

Kawase, Keiichi

東京電力福島第一原子力発電所の事故により放出された放射性物質による環境汚染に対処するために、原子力機構は国の委託を受け除染モデル実証事業を実施した。この事業では、様々な除染対象物に適用する除染手法の選定、除染効果の評価などを行い、その後実施されている本格的な除染作業に必要な知見を得ることができた。本報告では、除染モデル実証事業で得られた知見に基づき、生活圏における環境回復のための除染技術についての解説を行う。

Major challenges to implementing full-scale environmental decontamination were the absence of real-world examples and also lack of experience in planning and implementing decontamination technology appropriate to the physical and social boundary conditions in both Japan and Fukushima. The Japan Atomic Energy Agency was thus charged with conducting a range of Decontamination Pilot Project to examine the applicability of decontamination technologies, with a special focus on reducing dose rates and thus allowing evacuees to return to re-establish their normal lifestyles as quickly as possible, whilst simultaneously maintaining worker safety. In this report, re-edit the report of the Decontamination Pilot Project (Nakayama et al.,2014), do the commentary for the decontamination technology.