Process and apparatus for decontaminating plant parts...

Details Process and apparatus for decontaminating plant parts... Process and apparatus for decontaminating plant parts...

G - Physics

21

F

51/2

G21F 9/28 (2006.01) B24C 9/00 (2006.01) G21F 9/00 (2006.01)

Patent

CA 1271333

ABSTRACT This invention relates to a process of decon- taminating parts of nuclear power plants which are con- taminated with radioactive material, wherein surface layers are removed from said parts. The parts to be decontaminated are treated with a jet of pressurized water which contains a granular abrasive and which may contain admixed air, the mixed effluent consisting of water, abrasive and detached particles is separated into an aqueous phase and a sludge phase, the sludge phase is dried, the resulting dry material is separated into abrasive and particles smaller in diameter than the abrasive, the purified abrasive is recycled to the water for forming the jet of water under pressure, and the separated particles are made available for safe disposal.

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