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ICRP International

Conference on Recovery After Nuclear Accidents

Radiological Protection Lessons
from Fukushima and Beyond

December 1 - 18, 2020

Y. Takeuchi

Updated: Dec 11, 2020

Machinery System for Radioactivity Measurement of Container Bag Including Removed Soil and Its Deals in Off-site Decontamination

Y. Takeuchi (Hitachi Construction Machinery Japan Co., Ltd.)


Towards the final disposal of the removed soil outside Fukushima Pref., MOE (Ministry Of the Environment, Japan) will promote recycling of the soil after volume reduction technology as much as possible, which consequently would lead to reduce the volume of soil for the final disposal. In these promotion, easy and safety deal of container bag and its radioactive screening are big issues.

For this solution, we developed machinery system merged technology of Hitachi group, which uses hydraulic excavator, radiation measurement system and these integrations. It makes possible to operate only machinery operator which measure radioactivity and weight of container bag and its screening and deal. As a result of this, it makes distance between machinery, container bag and workers during operation that contributes efficiency of these operation and decrease risks of exposure and accident.

This machinery system was used in recycling demonstration project by MOE in 2019

 

オフサイトの除去土壌が入った土嚢袋の放射能測定と取扱いを可能とした機械システム

竹内 豊 (日立建機日本株式会社)


福島県外での除去土の最終処分に向けて、MOE(環境省)は、可能な限りの処分土を減容と土のリサイクルをするための技術の開発を推進していますが、この推進のためには、コンテナバッグの簡単で安全な取引とその放射性スクリーニングが大きな問題となっています。

この解決のために我々は、油圧ショベル、放射線測定システム、およびこれらのシステム統合用する日立グループの技術を結集した機械システムを開発しました。コンテナバッグの放射能と重量を測定し、土のう袋のスクリーニングと取扱いを行うことが機械オペレーターのみで可能です。その結果、作業中の機械、コンテナバッグ、作業員の距離が離れ、作業の効率化に貢献し、被ばくや事故のリスクを低減します。

この機械システムは、2019年にMOEによるリサイクル実証プロジェクトで使用されました。

 
Poster-C66_YTakeuchi
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