Prospects of subcritical molten salt reactor for minor actinides incineration in closed fuel cycle

Abstract

Paper presents an attempt to carry out synthesis of the approaches based on use of subcritical reactors for minor actinides (MA) recycling and incineration, and gas-fluorides methods of reprocessing of spent nuclear fuel. The subcritical molten salt reactor (K eff = 0.95) with fuel composition based on molten FLiNaK salt and fluorides of MA (separated from spent fuel VVER-1000 light water reactor) and external neutron source, based on 1 GeV proton accelerator with 6 mA protons current and molten salt cooled tungsten target is considered. Paper presents the results of parametrical analysis of equilibrium isotopic composition of molten salt reactor (MSR) with MA feed in dependence of core dimensions, average neutron flux and external neutron source intensity.