METHOD OF CLEANING IRRADIATED GRAPHITE BUSHINGS OF URANIUM-GRAPHITE REACTOR AND DEVICE FOR IMPLEMENTATION THEREOF Russian patent published in 2016 - IPC G21F9/28 

FIELD: nuclear physics.

SUBSTANCE: group of inventions relates to nuclear physics, to technology for processing solid radioactive wastes. Method of cleaning irradiated graphite bushings of uranium-graphite reactor comprises gas treatment, transferring impurities in a gas phase, cooling of carbon material. Radiated graphite bushing is heated by low-temperature plasma flow in a first temperature zone of a flow chamber in atmosphere of inert gas to temperature of above 3973K. Produced gas mixture is moved to a second temperature zone of the flow chamber for carbon deposition, where temperature is maintained within the range of 3143K to 3973K. Non-deposited gas mixture is moved to a third temperature zone of the flow chamber, where it is cooled to temperature lower than 940K and process materials are deposited. Residual inert gas is returned to the first temperature zone of the flow chamber, process is continued until complete evaporation of graphite bushing. There is also a device for cleaning irradiated graphite bushings of uranium-graphite reactor.

EFFECT: group of inventions allows reducing the time of cleaning graphite of irradiated graphite bushings of uranium-graphite reactor.

2 cl, 4 dwg