Conference Paper 東京電力福島第一原子力発電所事故復旧時の放射線管理の課題̶-水晶体の被ばく・生物影響の観点から-̶

林田, 敏幸  ,  佐々木, 洋  ,  浜田, 信行  ,  立崎, 英夫  ,  初坂, 奈津子  ,  赤羽, 恵一  ,  横山, 須美

52 ( 2 )  , pp.88 - 99 , 2017-07
In March 2011, the accident occurred at the Fukushima Daiichi Nuclear Power Plant of Tokyo Electric Power Company. During recovery from critical situations, the radiation dose for some emergency workers exceeded the effective dose limit recommended for an emergency situation. A month after the accident, the International Commission on Radiological Protection issued a statement on tissue reactions recommending significant reduction of the equivalent dose limit to the lens of the eye. Many radiation workers will need to be involved in treatment of water contaminated with radionuclides, fuel debris retrieval, and decommissioning of reactors for a long period of time. Thus, the optimized radiation control in the fields, exposure reduction, prevention of tissue reactions, and reduction of stochastic risks for workers becomes necessary. This paper discusses issues in relation to radiation protection of the ocular lens in such recovery workers, from the viewpoint of radiation exposure of workers, its management, manifestations and mechanisms of the lens effects.

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