DECONTAMINATION SYSTEM FOR RADIOACTIVE WASTE

PURPOSE:To enable efficient and thorough decontamination by providing a device for recognizing the shapes of radioactive contaminating metal waste, instrument for measuring radioactivity distribution, device for removing the contaminating points of the waste, rinse tank, and instrument for measuring radioactivity. CONSTITUTION:The radioactive contaminating metal waste is taken out of a container in a waste accepting part 1 and the shapes thereof are measured by the waste shape recognizing device 2. The distribution of the radioactivity is measured by the radioactivity distribution measuring instrument 3. The contaminating points of the waste having the spotty contaminating points are concentrically decontaminated by a decontamination device 4 after the recognition of the radioactivity distribution. The waste which the decontamination is finished is then subjected to cleaning of the decontaminating agent, etc., by the rinse tank 5 and the radioactivity level thereof is measured by the radioactivity measuring instrument 6. This waste is discriminated to the waste decontaminated down to the prescribed level and the waste failing to be decontaminated. The waste failing to be decontaminated down to the prescribed radioactivity level is again subjected to the decontamination.