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Development of dose evaluation method considering radionuclides migration on the surface of the site for confirmation of completion of decommissioning

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Abstract

We have developed evaluation method of radiocesium (RCs) migration by surface runoff and soil erosion in considering vertical distribution of RCs in initial contaminated soil and concentration of RCs in different particle size. RCs migration on ground surface during a single year has been evaluated in a supposed site with horizontally uniform contamination by Cs-137. As a result, RCs has concentrated in the impoundment, and 0.18% of total inventory in the site migrated into the sea. These results suggest that surface migration of RCs effects increasing of external exposure at impoundment and internal exposure from ingestion of marine products.

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Acknowledgments

Part of this research is funded by the Secretariat of Nuclear Regulation Authority, Nuclear Regulation Authority, Japan.

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Authors and Affiliations

  1. Japan Atomic Energy Agency, Shirakata, 2-4, Tokai, Naka-gun, Ibaraki, Japan

    Kazuji Miwa, Taro Shimada & Seiji Takeda

  2. Nippon Advanced Information Service, Muramatsu, 416-1, Tokai, Naka-gun, Ibaraki, Japan

    Masakazu Namekawa

Authors
  1. Kazuji Miwa
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  2. Masakazu Namekawa
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  3. Taro Shimada
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  4. Seiji Takeda
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Correspondence to Kazuji Miwa.

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Miwa, K., Namekawa, M., Shimada, T. et al. Development of dose evaluation method considering radionuclides migration on the surface of the site for confirmation of completion of decommissioning. MRS Advances 7, 165–169 (2022). https://doi.org/10.1557/s43580-022-00212-7

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  • DOI: https://doi.org/10.1557/s43580-022-00212-7

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