G - Physics – 21 – F
Patent
G - Physics
21
F
G21F 9/28 (2006.01) G21F 9/00 (2006.01)
Patent
CA 2373957
A radioactive substance decontamination method and apparatus that decontaminates a metal member contaminated by radioactive substance in a short period of time. The apparatus includes; multiple reducing decontamination tanks having different radiation control values as the upper limit values for the radiation dose of the reducing decontamination agent stored inside; a carrier for immersing the metal member into the multiple reducing decontamination tanks and a washing tank. A tube is also included for transferring into the second reducing decontamination tank where the radiation control value is the second value that is higher than the first value, the reducing decontamination agent in the first reducing decontamination tank where the radiation control value is the first value out of the multiple reducing decontamination tanks. A reducing agent decomposer is also included for decomposing a component contained in the reducing decontamination agent of the reducing decontamination tank where the radiation control value is the highest of the reducing decontamination tanks connected by the tube. Finally, a washing tank for washing the reducing decontamination agent deposited on the decontaminated metal member.
Anazawa Kazumi
Nagase Makoto
Sakashita Motoaki
Hitachi Ltd.
Hitachi Engineering Co. Ltd.
Kirby Eades Gale Baker
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