TY  - JOUR
PY  - 2015//
TI  - Estimating annual individual doses for evacuees returning home to areas affected by the Fukushima Nuclear Accident
JO  - Health physics
A1  - Yajima, Kazuaki
A1  - Kurihara, Osamu
A1  - Ohmachi, Yasushi
A1  - Takada, Masashi
A1  - Omori, Yasutaka
A1  - Akahane, Keiichi
A1  - Kim, Eunjoo
A1  - Torikoshi, Masami
A1  - Yonehara, Hidenori
A1  - Yoshida, Satoshi
A1  - Sakai, Kazuo
A1  - Akashi, Makoto
SP  - 122
EP  - 133
VL  - 109
IS  - 2
N2  - To contribute to the reconstruction and revitalization of Fukushima Prefecture following the 2011 nuclear power disaster, annual individual doses were estimated for evacuees who will return home to Tamura City, Kawauchi Village, and Iitate Village in Fukushima. Ambient external dose rates and individual doses obtained with personal dosimeters were measured at many residential and occupational sites throughout the study areas to obtain fundamental data needed for the estimation. The measurement results indicated that the ratio of individual dose based on a personal dosimeter to the ambient external dose measurement was 0.7 with 10% uncertainty. Multiplying the ambient external dose by 0.7 may be an appropriate measure of the effective dose to an individual in the investigated area. Annual individual doses were estimated for representative lifestyles and occupations based on the ambient external dose rates at the measurement sites, taking into account the relationship between the ambient external dose and individual dose. The results were as follows: 0.6-2.3 mSv y in Tamura, 1.1-5.5 mSv y in Kawauchi, and 3.8-17 mSv y in Iitate. For all areas investigated, the estimated dose to outdoor workers was higher than that to indoor workers. Identifying ways to reduce the amount of time that an outdoor worker spends outdoors would provide an effective measure to reduce dose.<p />  <p>Language: en</p>
LA  - en
SN  - 0017-9078
UR  - http://dx.doi.org/10.1097/HP.0000000000000308
ID  - ref1
ER  -