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Research Papers: Nuclear Power

Risk Assessment of the Intake of Foods and Soil With the Radionuclides and the Air Radiation Dose After the Fukushima Nuclear Disaster

[+] Author and Article Information
Aiichiro Fujinaga

Department of Civil Engineering,
Osaka Sangyo University,
3-1-1 Nakagaito Daito City,
Osaka 574-8530, Japan
e-mail: fujinaga@ce.osaka-sandai.ac.jp

Minoru Yoneda

Graduate School of Engineering,
Kyoto University,
Kyoto daigaku-Katsura, Nishikyo-ku,
Kyoto 615-8530, Japan
e-mail: yoneda@risk.env.kyoto-u.ac.jp

Maiko Ikegami

Research Reactor Institute,
Kyoto University,
2, Asashiro-Nishi, Kumatori-cho, Sennan-gun,
Osaka 590-0494, Japan
e-mail: ikegami@rri.kyoto-u.ac.jp

1Corresponding author.

Contributed by the Nuclear Division of ASME for publication in the JOURNAL OF ENGINEERING FOR GAS TURBINES AND POWER. Manuscript received April 19, 2013; final manuscript received January 25, 2014; published online February 28, 2014. Editor: David Wisler.

J. Eng. Gas Turbines Power 136(8), 082901 (Feb 28, 2014) (7 pages) Paper No: GTP-13-1105; doi: 10.1115/1.4026811 History: Received April 19, 2013; Revised January 25, 2014

The exposure routes by which the dispersion of radionuclides from the accident at the Fukushima atomic power plant were estimated, and the risk was evaluated based on the overall exposure routes, which include the ingestion of food, ingestion and inhalation of soil, and external air dose. This study shows that the air dose from this disaster should be less than 0.2 μSv/h to control the radiation dose with the consumption of food being less than 1 mSv/yr. However, to maintain the lifetime dose under 100 mSv, several mSv/yr is sufficient, considering radioactive decay and dilution by advection and diffusion.

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Figures

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Fig. 1

Composition and research flow of this study

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Fig. 2

Exposure routes assumed in this research

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Fig. 3

Lifetime exposure (mSv) based on the 1 yr intake of food (Mar. 2011–Mar. 2012)

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Fig. 4

Lifetime exposure (mSv) based on the lifetime intake of food for the ages in 2011 and in men (M)/women (W)

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