保健物理
Online ISSN : 1884-7560
Print ISSN : 0367-6110
原著論文
放射性物質により汚染された災害廃棄物の道路への再利用に伴う被ばく線量評価
澤口 拓磨武田 聖司木村 英雄田中 忠夫
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ジャーナル フリー

2015 年 50 巻 1 号 p. 36-49

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It is desirable that the disaster wastes contaminated by radioactive cesium after the severe accident at the Fukushima Nuclear Plant are reused as much as possible in order to minimize the quantity to be disposed of. Ministry of the Environment showed the policy that the wastes containing cesium of higher concentration than the clearance level (100 Bq/kg) were reusable as materials of construction such as subbase course materials of pavements under controlled condition with measures to lower exposure doses. In this study, in order to provide technical information for making a guideline on the use of contaminated concrete materials recycled from disaster wastes as pavement, doses for workers and the public were estimated, and the reusable concentration of radioactive cesium in the wastes was evaluated. It was shown that the external exposure of the public (children) residing near the completed pavement gave the minimum radiocesium concentration in order to comply with the dose criteria. The recycled concrete materials whose average concentration of cesium lower than 2,700 Bq/kg can be used as the subbase course materials of pavements.

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© 2015 日本保健物理学会
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