External dose evaluation based on detailed air dose rate measurements in living environments

Sato, Tetsuro*; Ando, Masaki; Sato, Masako*; Saito, Kimiaki

Journal of Environmental Radioactivity, 210, p.105973_1 - 105973_7, 2019/12

https://doi.org/10.1016/j.jenvrad.2019.05.005

A method was devised for estimation of external doses of Fukushima residents expected to return to their homes after evacuation orders are lifted. 211 residents expected to return to six towns and villages were surveyed in FY 2014, FY 2015, and FY2016. Interviewing returning residents about their expected life patterns after returning, air dose rate were measured along the reported personal trails representing their patterns of movement in daily life. Excluding 15 residents from whose homes we were unable to take air dose rate measurements, the maximum external effective dose and the average external effective dose were estimated respectively as 4.9 mSv/y and 0.86 mSv/y. Although the mean values and dispersion of external effective doses differ depending on the evacuation level, for 93.3% of all residents, the estimated external effective doses were less than 2 mSv/y. The average exposure dose at home accounts for 66.8% of the annual exposure dose.

Investigation on distribution of radioactive substances in Fukushima, 7; Estimation of exposed dose by measurement of air dose rate

Sato, Rina; Yoshimura, Kazuya; Sanada, Yukihisa; Sato, Tetsuro*; Takagi, Marie*

no journal, , 

no abstracts in English

Environmental radiation monitoring after the Fukushima NPP accident, 4; Development of external exposure dose simulators for individuals

Sato, Rina; Yoshimura, Kazuya; Abe, Tomohisa; Funaki, Hironori; Mori, Airi; Sanada, Yukihisa; Mori, Tsubasa*; Sato, Tetsuro*

no journal, ,