METHOD FOR DEACTIVATING SOLID RADIOACTIVE WASTE WITH ICE GRANULES Russian patent published in 2017 - IPC G21F9/28 

FIELD: power industry.

SUBSTANCE: method for deactivating solid radioactive waste (SRW) comprises the exposure of ice particles on the SRW surface in the working chamber with further melting of ice, collection and filtration of the molten water to form a closed water cycle. The SRW surface is treated with accelerated ice granules. The input and output radiation waste monitoring are carried out. Sorting of SRW in accordance with the results of radiation monitoring with the withdrawal of some of the waste from the category of radioactive into the category of solid industrial waste. Melt water undergoes complete purification from radionuclides after deactivation. SRW deactivation is carried out by exposing them to a stream of spherical monodisperse ice water granules with a size of 100-500 mcm, with a velocity of up to 100 m/s, obtained at a temperature of not higher than minus 50°C.

EFFECT: invention allows to increase economy and efficiency of treatment and reduce the volume of solid radioactive waste.

7 cl, 1 dwg