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The Japan Health Physics Society Guideline on Dose Monitoring for the Lens of the Eye

  • Yokoyama, Sumi (Research Promotion Headquarters, Fujita Health University) ;
  • Tsujimura, Norio (Radiation Protection Department, Nuclear Fuel Cycle Engineering Laboratories, Japan Atomic Energy Agency) ;
  • Hashimoto, Makoto (Radiation Protection Department, Oarai Research and Development Institute, Japan Atomic Energy Agency) ;
  • Yoshitomi, Hiroshi (Department of Radiation Protection, Nuclear Science Research Institute, Japan Atomic Energy Agency) ;
  • Kato, Masahiro (National Metrology Institute of Japan, National Institute of Advanced Industrial Science and Technology) ;
  • Kurosawa, Tadahiro (National Metrology Institute of Japan, National Institute of Advanced Industrial Science and Technology) ;
  • Tatsuzaki, Hideo (Department of Radiation Emergency Medicine, National Institute of Radiological Sciences, National Institutes for Quantum Science and Technology (QST)) ;
  • Sekiguchi, Hiroshi (Dosimetry Center Technical Office, Nagase Landauer Ltd.) ;
  • Koguchi, Yasuhiro (Oarai Research Center, Chiyoda Technol Corporation) ;
  • Ono, Koji (Division of Nursing, Higashigaoka Faculty of Nursing, Tokyo Healthcare University) ;
  • Akiyoshi, Masahumi (Radiation Research Center, Osaka Prefecture University) ;
  • Kunugita, Naoki (School of Health Sciences, University of Occupational and Environmental Health) ;
  • Natsuhori, Masahiro (School of Veterinary Medicine, Ktatasato University) ;
  • Natsume, Yoshinori (Fukushima-Daini Nuclear Power Station, Tokyo Electric Power Company Holdings) ;
  • Nabatame, Kuniaki (Technology Development Division, Fujita Corporation) ;
  • Kawashima, Tsunenori (Isogo Nuclear Engineering Center Field Engineering Department Field Engineering Management, Toshiba Energy Systems & Solutions Corporation) ;
  • Takagi, Shunji (Policy Consulting Unit, Mitsubishi Research Institute) ;
  • Ohno, Kazuko (Kyoto College of Medical Science) ;
  • Iwai, Satoshi (Technical Management Division, Japan Nuclear Safety Institute)
  • Received : 2021.07.10
  • Accepted : 2021.11.04
  • Published : 2022.03.31

Abstract

Background: In Japan, new regulations that revise the dose limit for the lens of the eye (hereafter the lens), operational quantities, and measurement positions for the lens dose were enforced in April 2021. Based on the international safety standards, national guidelines, the results of the Radiation Safety Research Promotion Fund of the Nuclear Regulation Authority, and other studies, the Working Group of Radiation Protection Standardization Committee, the Japan Health Physics Society (JHPS) developed a guideline for radiation dose monitoring for the lens. Materials and Methods: The Working Group of the JHPS discussed the criteria of non-uniform exposure and the management criteria set not to exceed the dose limit for the lens. Results and Discussion: In July 2020, the JHPS guideline was published. The guideline consists of three parts: main text, explanations, and 26 examples. In the questions, the corresponding answers were prepared, and specific examples were provided to enable similar cases to be addressed. Conclusion: With the development of the guideline on radiation dose monitoring of the lens, radiation managers and workers will be able to smoothly comply with revised regulations and optimize radiation protection.

Keywords

Acknowledgement

We would like to thank members of the Japan Health Physics Society (JHPS) Board, the Radiation Protection Standardization Committee of the JHPS, and associate members of the Working Group for their support and valuable comments. This research was partially supported by the 2019 Radiation Safety Research Promotion Fund, the Nuclear Regulation Authority (No. JPJ007057).

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