| 摘要 |
PROBLEM TO BE SOLVED: To provide a volume reducing system of radioactive waste in which the transfer quantity of the radioactive nuclide to the downstream of an evacuation system is suppressed to be very small, the secondary waste is less generated, and the maintenance is easy. SOLUTION: A cyclone 5 is placed between a plasma treatment chamber 1 for reducing the volume of radioactive waste and an evacuation apparatus for decompressing the plasma treatment chamber 1. In addition, an combustible pre-filter 7 is built therein as a purifying means of exhaust gas of the evacuation apparatus 3, and a HEPA filter 8 is built in the post-stage. A metal fiber filter 6 is placed in the post-stage of the cyclone 5.
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