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

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

We have been continuously implementing an attempt to accurately estimate the exposure dose when residents return to areas where evacuation order was cancelled, by interview of life action route and measurement of air dose rate covering the whole action route. The survey results for 2017 and 2018 will be reported. From this study, it was found that about 85% of the surveyed people had an estimated annual additional dose of 1.0 mSv or less, and about 90% had an estimated value of 2.0 mSv or less.