Annual report on the environmental radiation monitoring around the Tokai Reprocessing Plant FY2010

Sumiya, Shuichi ; Watanabe, Hitoshi; Nakano, Masanao ; Takeyasu, Masanori ; Nakada, Akira ; Fujita, Hiroki; Isozaki, Tokuju; Morisawa, Masato; Mizutani, Tomoko ; Kokubun, Yuji ; Nagaoka, Mika  ; Kato, Chiaki*; Onuma, Toshimitsu; Nemoto, Masashi; Inoue, Hideo*; Murakami, Minoru*; Fujii, Jun*; Watanabe, Hajime*; Kaminaga, Masayuki*; Sato, Yoshimi*; Sugai, Masamitsu*; Tadokoro, Satoshi*; Sagawa, Fumiaki*; Maejima, Kyoko*

Environmental radiation monitoring around the Tokai Reprocessing Plant has been performed by the Nuclear Fuel Cycle Engineering Laboratories, based on "Safety Regulations for the Reprocessing Plant of Japan Atomic Energy Agency, Chapter IV - Environmental Monitoring". This annual report presents the results of the environmental monitoring and the dose estimation to the hypothetical inhabitant due to the radioactivity discharged from the plant to the atmosphere and the sea during April 2010 to March 2011. In this report, some data include the influence of the accidental release from the Fukushima Daiichi Nuclear Power Plant on Tokyo Electric Power Co. in 2011 March. Appendices present comprehensive information, such as monitoring program, monitoring methods, monitoring results and their trends, meteorological data and discharged radioactive wastes. In addition, the data exceeded the normal range of fluctuation by the accidental release was evaluated in the appendices.