PROSPECTS OF SUBCRITICAL MOLTEN SALT REACTOR FOR MINOR ACTINIDES INCINERATION IN CLOSED FUEL CYCLE

P.N. Alekseev, V.Yu. Blandinsky, A.A. Dudnikov, P.A. Fomichenko, V.A. Nevinitsa, A.A. Frolov, A.S. Lubina, A.A. Sedov, A.S. Subbotin, NRC «Kurchatov institute», Russia

24th Symposium of AER on VVER Reactor Physics and Reactor Safety (2014, Sochi, Russia)
Nuclear fuel cycle perspectives and sustainability and intermediate storage of spent fuel, decommissioning and rad waste

Abstract

PROSPECTS OF SUBCRITICAL MOLTEN SALT REACTOR FOR MINOR ACTINIDES INCINERATION IN CLOSED FUEL CYCLE
Alekseev P.N., Blandinsky V.Yu., Dudnikov A.A., Fomichenko P.A., Nevinitsa V.A., Frolov A.A., Lubina A.S., Sedov A.A., Subbotin A.S.
NRC “Kurchatov Institute”, 123182, Moscow, Kurchatov sq. 1, Russian Federation
ABSTRACT
The subcritical molten salt reactor (SMSR) with fuel composition of heavy nuclide fluorides in molten FLiNaK salt and with external neutron source, based on 1 GeV proton accelerator and molten salt cooled tungsten target is considered. SMSR is proposed for minor actinides (separated from spent fuel VVER-1000 light water reactor) incineration and for 233U conversion from 232Th. Paper presents the results of parametrical analysis of equilibrium nuclide composition of molten salt reactor with minor actinides feed in dependence of core dimensions, average neutron flux and external neutron source intensity. Reactor design is defined; requirements to external neutron source are posed; heavy nuclides equilibrium and fuel cycle main parameters are calculated.

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