Annual report on the environmental radiation monitoring around the Tokai Reprocessing Plant FY2022

Kokubun, Yuji ; Nakada, Akira ; Seya, Natsumi ; Koike, Yuko; Nemoto, Masashi; Tobita, Keiji; Yamada, Ryohei*; Uchiyama, Rei; Yamashita, Daichi; Nagai, Shinji; Nagaoka, Mika  ; Matsuo, Kazuki; Maehara, Yushi; Hirao, Moe; Uesugi, Misaki; Nihei, Hidekazu*; Noguchi, Mizuki*; Onuma, Toshimitsu*; Fujii, Jun*; Tadokoro, Satoshi*; Sasaya, Shinji*; Sugai, Masamitsu*; Kaminaga, Masayuki*; Sato, Yoshimi*; Maejima, Kyoko*; Terakado, Ryo*; Tayama, Tomohiro*; Takahashi, Hirokazu*

The Nuclear Fuel Cycle Engineering Laboratories conducts environmental radiation monitoring around the reprocessing plant in accordance with the "Safety Regulations for Reprocessing Plant of JAEA, Part IV: Environmental Monitoring". This report summarizes the results of environmental radiation monitoring conducted during the period from April 2022 to March 2023 and the results of dose calculations for the surrounding public due to the release of radioactive materials into the atmosphere and ocean. In the results of the above environmental radiation monitoring, many items were affected by radioactive materials emitted from the accident at the Fukushima Daiichi Nuclear Power Plant of Tokyo Electric Power Company, Incorporated (changed to Tokyo Electric Power Company Holdings, Inc. on April 1, 2016), which occurred in March 2011. Also included as appendices are an overview of the environmental monitoring plan, an overview of measurement methods, measurement results and their changes over time, meteorological statistics results, radioactive waste release status, and an evaluation of the data which deviated of the normal range.