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Yokoyama S, Tatsuzaki H, Tanimura Y, Yoshitomi H, Hirao S, Aoki K, Tachiki S, Ezaki I, Hoshi K, Tsujimura N. Radiation exposure to the lens of the eye for Japanese nuclear power plant workers. JOURNAL OF RADIOLOGICAL PROTECTION : OFFICIAL JOURNAL OF THE SOCIETY FOR RADIOLOGICAL PROTECTION 2022; 42:031504. [PMID: 35705021 DOI: 10.1088/1361-6498/ac7913] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/27/2021] [Accepted: 06/15/2022] [Indexed: 06/15/2023]
Abstract
In Japan, the radiation-dose limit for the lens of the eye was revised in April 2021. Consequently, for workers, the numerical values of the equivalent dose to the lens of the eye are equal to those of the effective dose. Radiation workers, radiation safety officers and licensees must comply with regulations related to radiation protection and optimize protection. The new guidelines on dose monitoring of the lens of the eye developed by the Japan Health Physics Society recommend for the dose to be estimated near the eye for accurate estimation, when the dose to the lens approaches or exceeds the management criteria. However, there is limited information regarding the non-uniform exposure of nuclear power plant workers. In this study, the dose equivalents of high-dose-rate workplaces and the personal doses of 88 workers were estimated at four Japanese commercial nuclear power plant sites (RWR: 3 units and BWR: 3 units) and the dose to the lens of the eye and the exposure situations of the workers were analyzed.
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Affiliation(s)
- Sumi Yokoyama
- Research Promotion Headquarters, Fujita Health University, 1-98 Dengakugakubo Kutsukakecho, Toyoake, Aichi 470-1192, Japan
| | - Hideo Tatsuzaki
- Department of Radiation Emergency Medicine, National Institute of Radiological Sciences, National Institutes for Quantum Science and Technology (QST), 4-9-1 Anakawa Inage, Chiba 263-8555, Japan
| | - Yoshihiko Tanimura
- Department of Radiation Protection, Nuclear Science Research Institute, Japan Atomic Energy Agency, Muramatsu, Tokai-mura, Ibaraki 319-1195, Japan
| | - Hiroshi Yoshitomi
- Department of Radiation Protection, Nuclear Science Research Institute, Japan Atomic Energy Agency, Muramatsu, Tokai-mura, Ibaraki 319-1195, Japan
| | - Shigekazu Hirao
- Institute of Environmental Radioactivity, Fukushima University, 1 Kanayagawa, Fukushima-shi, Fukushima 960-1296, Japan
| | - Katsunori Aoki
- Safety and Facility Management Section, Tono Geoscience Center, Japan Atomic Energy Agency, 959-31, Jorinji, Izumicho, Toki, Gifu 509-5102, Japan
| | - Shuichi Tachiki
- School of Medical Sciences, Fujita Health University, 1-98 Dengakugakubo Kutsukakecho, Toyoake, Aichi 470-1192, Japan
| | - Iwao Ezaki
- Chiyoda Technol Corporation, 1-7-2 Yushima, Bunkyo, Tokyo 113-8681, Japan
| | - Katsuya Hoshi
- Radiation Protection Department, Nuclear Fuel Cycle Engineering Laboratories, Japan Atomic Energy Agency, 4-33, Muramatsu, Tokai-mura, Ibaraki 319-1194, Japan
| | - Norio Tsujimura
- Radiation Protection Department, Nuclear Fuel Cycle Engineering Laboratories, Japan Atomic Energy Agency, 4-33, Muramatsu, Tokai-mura, Ibaraki 319-1194, Japan
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Yokoyama S, Ezaki I, Tatsuzaki H, Tachiki S, Hirao S, Aoki K, Tanimura Y, Hoshi K, Yoshitomi H, Tsujimura N. Measurements of the doses of eye lens for the workers of Fukushima Daiichi Nuclear Power Plant. RADIAT MEAS 2020. [DOI: 10.1016/j.radmeas.2020.106399] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Tsujimura N, Hoshi K, Aoki K, Yoshitomi H, Tanimura Y, Yokoyama S. Eye lens dosimetry for workers at Fukushima Daiichi Nuclear Power Plant—2: Field study using humanoid phantoms. RADIAT MEAS 2020. [DOI: 10.1016/j.radmeas.2020.106305] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
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