Measurement and comparison of individual external doses of high-school students living in Japan, France, Poland and Belarus—the ‘D-shuttle’ project—

Nahoko Adachi ,M Blanchard,A Ecalle,M Vaucelle,E Lefaillet,F Demangeau,A Ducouret,J Katsu,M Molȩda,I Date,W Gaul,T Yamaki,T Morioka,M Orsucci,N Toda,A Polis,N Tgawa,L Dobrzyński,J Malinowska,H Umemura,K Tanino,H Utsumi,E Morita,A Usui,H Haneda,M Nadzikiewicz,M Banaśkiewicz,T Tsushima,H Sugisaki,Y Inohara,N Omi,A Lacombe,K Tazbir,A Piskowski,W Kruczała,T Potsepnia,M Kozioł,E Zuclarelli,C Perdrisot,V Adamovitch,E Stalchenko,A Śniecińska,H Ohguchi,J Janvrin,P Cornette,H Higasi,M Dziedzic,G Arkoun,R Hakoda,V Maroselli,Y Adjovi,C Gardais,D Ogata,D Boreyko,D Etryk,A Koutaka,A Kowol,O Kravtchenko,A Staroń,M Szudejko,A Kurosu,D Tanaka,M Fabiszewska,D Przybylski,M Kozue,A Akli,C Avenoso,I Jout,H Oonuma,K Kurogome,K Czerkas,M Żmijewska,D Ayrault,K Boros,I Hamamatsu,M Pytel,A Płocharski,H Akamatsu,P Kilian,W Świderski,V Kontsevoy,H Horiuchi,M Banasiewicz,M Hiruta,N Tcesnokova,W Quillet,I Shustava,T Andrault,M Szymaszek,W Studzińska,J Ohno,Ł Dobaczewski,M Penaud,E Kluchnikov,T Ikoma,G Kanemori,M Sezaki,M Maulny,A Koori,M Dameron,B Matusik,H Ooshima,M Kuse,F Felici,C Miyake,T Sukegawa,R Nikul,Y Hozumi,K Matsuya,M Stromboni,M De Pontbriand,H Nadamoto,H Antonietti,M Malinowski,Y Horikawa,M Kiya,D Sakuma,M Magara,L Polti,M Itazu,H Taguchi,S Ihara,M Witkowski,M Klepuszewski,E Selivanov,V Edon,Toru Kato ,Kazuaki Yasuda ,Masayoshi Uno ,Yoshihiro Wada ,Katsuhiko Nomura ,Yoshitaka Okada ,Kuniaki Onodera ,Mariela Paoli ,K Shiroishi,Emue Ewonubari Bernard ,Ashley Remy ,Yasuo Nihei ,Yuuko Endo ,Kaori Muto ,Yuka Kodama ,Soichiro Tanaka ,Hiroaki Kudo ,Yoshinori Fujiwara ,Futoshi Konishi ,Takafumi Yamamoto ,Maciej Sadowski ,Kazuyosi Oonishi ,Mai Hattori ,Yukinobu Koyama ,Akio Honda ,Carla Schneider ,Masami Okabe ,Donald Teruo Hata ,Akira Konno ,D Fauchier,Reina Kumagai ,Akiko Ito ,Jorge Yamamoto ,Toshimitsu Endo ,H Oouchi,Hitoshi Suzuki ,Goro Tanaka ,Shi Fang ,M Petit ,Nobuo Kanomata ,Chihiro Nakayama ,K Watase,Minoru Hashimoto ,Kaori Miyata ,Kyoko Matsukawa ,Yoko Miyamoto ,Soichiro Watanabe ,Kunio Suzuki ,Mariko Saito ,Ryuichi Hayashi ,H Tsuchiya ,Minoru Kanno ,Reiko Suzuki ,Yuichiro Yoshida ,Yasukazu Suzuki ,Asao Ando ,Kazuya Yoshimura ,Yoshihiko Sasaki ,Shin‐Ichi Niwa ,Jun Ichiro Tada ,Piotr Mazur ,Kazuo Kikuchi ,Seigo Ooki ,Catherman Robert ,Kazumi Sano ,Ohtsura Niwa ,L Bernardini,Koichi Hashimoto ,Saori Anzai ,R Hayano ,Yukihiko Kawasaki ,L Gurin,Masaru Sumida ,Akiko Yoshida ,K Watanabe ,Kiyoshi Nagashima ,Kyoko Takahashi ,Shigeaki Kato ,Mrunal Nakade ,Hideyuki Kanda ,Mieko Ide ,Takashi Hara ,Kaoru Endo ,Taisaku Hashimoto ,Kubangun Nur Aida ,M Nogi,Kenji Tsutsumi ,Masaki Yamashita ,Meiko Okada ,Kenichi Handa ,Hiroshi Tsukamoto ,Kevin Schwartzman ,Yukie Masui ,Sylvie Charron ,Hideo Nakazawa ,E Berthet,Mary J Kudla ,R Kokubun,Makoto Yanai ,S Akiyama ,Nana Sato ,Hideki Onodera ,Thierry Schneider ,Makoto Miyazaki ,Noboru Kimura

doi:10.1088/0952-4746/36/1/49

Nahoko Adachi , M Blanchard + Show 229 more

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https://doi.org/10.1088/0952-4746/36/1/49

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Abstract

Twelve high schools in Japan (of which six are in Fukushima Prefecture), four in France, eight in Poland and two in Belarus cooperated in the measurement and comparison of individual external doses in 2014. In total 216 high-school students and teachers participated in the study. Each participant wore an electronic personal dosimeter ‘D-shuttle’ for two weeks, and kept a journal of his/her whereabouts and activities. The distributions of annual external doses estimated for each region overlap with each other, demonstrating that the personal external individual doses in locations where residence is currently allowed in Fukushima Prefecture and in Belarus are well within the range of estimated annual doses due to the terrestrial background radiation level of other regions/countries.

Highlights

The Fukushima Dai-ichi nuclear power plant accident, which began in March 2011, released a significant amount of radioactive substances, contaminating Fukushima and surrounding prefectures [1]
Important in assessing the effect of radiation on the residents is to conduct personal dosimetry: One of the earliest reports was by Yoshida et al [4], who measured the individual doses of the medical staff dispatched from Nagasaki to Fukushima City from March to July 2011
The six Japanese schools outside Fukushima Prefecture were chosen by consulting the “Geological Map of Japan” (Fig. 2, a natural radiation level map published by the geological society of Japan [9, 10])

Summary

Introduction

The Fukushima Dai-ichi nuclear power plant accident, which began in March 2011, released a significant amount of radioactive substances, contaminating Fukushima and surrounding prefectures [1]. Important in assessing the effect of radiation on the residents is to conduct personal dosimetry: One of the earliest reports was by Yoshida et al [4], who measured the individual doses of the medical staff dispatched from Nagasaki to Fukushima City from March to July 2011. They reported that the personal dose equivalent HP(10) ranged from 0.08 to 1.63 μSv/h, significantly lower than the ambient dose equivalent rate H∗(10) recorded by a monitoring station in Fukushima city which ranged from 0.86 to 12.34 μSv/h. In 2014, 95.57% of the 46,436 subjects were found to be below 1 mSv/y [5]1

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