HEAT-RESISTANT COMPOSITE COATING WITH A FLUIDIZED BED OF THE UNDER-REACTOR MELT TRAP OF A LIGHT-WATER NUCLEAR REACTOR

Abstract

The paper is devoted to the analysis of existing options of under-reactor melt traps, designs and disadvantages of these traps. A variation of its own under-reactor melt trap with a heat-resistant composite coating with a fluidized bed is proposed. The description of facility for experimental studies of the heat-resistant composite coating with the fluidized bed is presented. The results of a thermal calculation of the variation of the under-reactor trap with fluidized bed melt are presented. Thermal calculations showed that an increase in the average temperature of the melt is less intense in the model of an under-reactor trap with a fluidized bed, due to heat removal from the corium to the metal to complete the phase transition.