Abstract
Direct measurements for internal dose estimates were performed at National Institute of Radiological Sciences (NIRS) on seven highly exposed workers of Tokyo Electric Power Company (TEPCO) and eight NIRS staff members who were first responders to the accident at the TEPCO Fukushima Daiichi Nuclear Power Station. For the TEPCO workers, the measurements were performed by both the whole-body counting and thyroid counting. The average effective half-life values of {sup 131}I in the thyroid and of {sup 134}Cs and {sup 137}Cs in the body were 7.8 days, 92.0 days and 104.3 days, respectively. These values were consistent with biokinetic models proposed by the International Commission on Radiological Protection (ICRP). For the NIRS staff members, the thyroid counting was made on the day when they had returned. The amount of {sup 131}I that was detected in the thyroid of all the eight subjects was small (∼100 Bq) even though they went to places near the site of the accident in its early stage. This level was found to be comparable to those of other NIRS staff members who stayed in the Chiba area (about 200 km south of the reactor) during the early stage of the accident. (author)
Nakano, Takashi;
Kim, Eunjoo;
Akahane, Keiichi;
Tominaga, Takako;
Tatsuzaki, Hideo;
Kurihara, Osamu;
Sugiura, Nobuyuki
[1]
- National Inst. of Radiological Sciences, Chiba (Japan)
Citation Formats
Nakano, Takashi, Kim, Eunjoo, Akahane, Keiichi, Tominaga, Takako, Tatsuzaki, Hideo, Kurihara, Osamu, and Sugiura, Nobuyuki.
Direct measurements for highly-exposed TEPCO workers and NIRS first responders involved in the Fukushima NPS accident.
Japan: N. p.,
2012.
Web.
Nakano, Takashi, Kim, Eunjoo, Akahane, Keiichi, Tominaga, Takako, Tatsuzaki, Hideo, Kurihara, Osamu, & Sugiura, Nobuyuki.
Direct measurements for highly-exposed TEPCO workers and NIRS first responders involved in the Fukushima NPS accident.
Japan.
Nakano, Takashi, Kim, Eunjoo, Akahane, Keiichi, Tominaga, Takako, Tatsuzaki, Hideo, Kurihara, Osamu, and Sugiura, Nobuyuki.
2012.
"Direct measurements for highly-exposed TEPCO workers and NIRS first responders involved in the Fukushima NPS accident."
Japan.
@misc{etde_22163890,
title = {Direct measurements for highly-exposed TEPCO workers and NIRS first responders involved in the Fukushima NPS accident}
author = {Nakano, Takashi, Kim, Eunjoo, Akahane, Keiichi, Tominaga, Takako, Tatsuzaki, Hideo, Kurihara, Osamu, and Sugiura, Nobuyuki}
abstractNote = {Direct measurements for internal dose estimates were performed at National Institute of Radiological Sciences (NIRS) on seven highly exposed workers of Tokyo Electric Power Company (TEPCO) and eight NIRS staff members who were first responders to the accident at the TEPCO Fukushima Daiichi Nuclear Power Station. For the TEPCO workers, the measurements were performed by both the whole-body counting and thyroid counting. The average effective half-life values of {sup 131}I in the thyroid and of {sup 134}Cs and {sup 137}Cs in the body were 7.8 days, 92.0 days and 104.3 days, respectively. These values were consistent with biokinetic models proposed by the International Commission on Radiological Protection (ICRP). For the NIRS staff members, the thyroid counting was made on the day when they had returned. The amount of {sup 131}I that was detected in the thyroid of all the eight subjects was small (∼100 Bq) even though they went to places near the site of the accident in its early stage. This level was found to be comparable to those of other NIRS staff members who stayed in the Chiba area (about 200 km south of the reactor) during the early stage of the accident. (author)}
place = {Japan}
year = {2012}
month = {Nov}
}
title = {Direct measurements for highly-exposed TEPCO workers and NIRS first responders involved in the Fukushima NPS accident}
author = {Nakano, Takashi, Kim, Eunjoo, Akahane, Keiichi, Tominaga, Takako, Tatsuzaki, Hideo, Kurihara, Osamu, and Sugiura, Nobuyuki}
abstractNote = {Direct measurements for internal dose estimates were performed at National Institute of Radiological Sciences (NIRS) on seven highly exposed workers of Tokyo Electric Power Company (TEPCO) and eight NIRS staff members who were first responders to the accident at the TEPCO Fukushima Daiichi Nuclear Power Station. For the TEPCO workers, the measurements were performed by both the whole-body counting and thyroid counting. The average effective half-life values of {sup 131}I in the thyroid and of {sup 134}Cs and {sup 137}Cs in the body were 7.8 days, 92.0 days and 104.3 days, respectively. These values were consistent with biokinetic models proposed by the International Commission on Radiological Protection (ICRP). For the NIRS staff members, the thyroid counting was made on the day when they had returned. The amount of {sup 131}I that was detected in the thyroid of all the eight subjects was small (∼100 Bq) even though they went to places near the site of the accident in its early stage. This level was found to be comparable to those of other NIRS staff members who stayed in the Chiba area (about 200 km south of the reactor) during the early stage of the accident. (author)}
place = {Japan}
year = {2012}
month = {Nov}
}