Dose estimation of landfill disposal of removed soil generated outside Fukushima Prefecture

福島県外で発生した除去土壌の埋設処分に係る線量評価

島田 亜佐子 ; 澤口 拓磨 ; 武田 聖司 

Shimada, Asako; Sawaguchi, Takuma; Takeda, Seiji

Dose estimation was conducted by evaluating landfill disposal of removed soil generated outside the Fukushima Prefecture by each local town and in a lump sum. Because radioactivity of the removed soil is lower than that of specified waste, simple landfill and covered with 30 cm non-contaminated soil was used and the exposure dose of public entry into the landfilled site after covering was also estimated. Furthermore, migration of Cs into groundwater because of precipitation and using the contaminated groundwater for drinking and agricultural water was evaluated and exposure doses regarding farmers and the ingestion of agricultural products were estimated. It was confirmed that estimated exposure doses during landfill were less than 1 mSv/y and those for after landfill were 0.01 mSv/y.