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Overview of the results of Fukushima decontamination pilot projects

除染モデル実証事業の成果概要

宮原 要; 時澤 孝之; 中山 真一

Miyahara, Kaname; Tokizawa, Takayuki; Nakayama, Shinichi

福島第一原子力発電所事故後の汚染に対処するため、原子力機構は国から受託した除染モデル実証事業を避難区域を主とする対象地区で実施した。さまざまな制約条件にもかかわらず、除染モデル実証事業により既存のものを改良した技術等の対象地区での適用結果を踏まえ効率的で効果的な除染方法を提案するなど、本格除染に向けた知見を取りまとめることができた。モデル事業の成果をモニタリング(放射線量などの測定),除染,除去物の保管の取り組みで得られた知見として概説する。

After the Fukushima Dai-ichi nuclear accident, Japan Atomic Energy Agency (JAEA) was chosen by the Government to conduct decontamination pilot projects at selected sites in Fukushima prefecture. Despite tight boundary conditions in terms of timescale and resources, the demonstration projects have served their primary purpose of development of a knowledge base to support more effective planning and implementation of stepwise regional remediation of the evacuated zone. A range of established, modified and newly developed techniques have been tested under realistic field conditions and their performance characteristics determined. The results of the project can be summarised in terms of site characterisation, clean-up and waste management.

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