Method for estimating the dose distribution of people to be returned in long-term contaminated areas

長期的な汚染地域への帰還住民の線量分布の評価手法

高原 省五  ; 飯島 正史; 嶋田 和真 ; 日高 昭秀   ; 本間 俊充

Takahara, Shogo; Iijima, Masashi; Shimada, Kazumasa; Hidaka, Akihide; Homma, Toshimitsu

To assess the extent of prospective doses to the people to be returned after they start again their daily life in the contaminated areas, we have developed a probabilistic method for estimating the dose distribution taking into account the realistic contamination conditions, and population-specific lifestyle habit. The measurements and surveys were performed with the cooperation of various population groups living in Fukushima Prefecture. The prospective dose distributions of the people to be returned were assessed based on these data. In some areas, the doses received by the people to be returned are less than those received by the continuously living areas. Measurements and assessments of doses to the people to be returned are important to ensure the safety of the people. Results of this study are not taken into account the contribution of doses from ingestion pathway. To assess precisely the consequences from radiation exposures, further considerations are needed.