NUCLEAR REACTOR WITH PRESSURE WATER WITH ACTIVE ZONE BASED ON COATED PARTICLES, AND ITS OPERATION IMPLEMENTATION METHOD Russian patent published in 2013 - IPC G21C1/00 

FIELD: power industry.

SUBSTANCE: invention is related to nuclear reactor with pressure water with active zone based on coated particles, which includes heterogeneous fuel assemblies arranged in backfill in distributed radial zones adjacent to inlet (5) and outlet (12) headers, with possibility of forming a heat carrier cross flow and with possibility of removing waste fuel assemblies, moving the rest fuel assemblies and additional loading of fresh fuel assemblies; at that, fresh fuel assemblies being arranged additionally without any burnable absorber. Method for implementation of operation of nuclear reactor with pressure water with active zone based on coated particles involves simultaneous arrangement in active zone of heterogeneous fuel assemblies, formation of cross flow and volumetric steam quantity of heat carrier, removal of waste fuel assemblies, and movement of the rest fuel assemblies and additional loading of fresh fuel assemblies. Besides, volumetric steam quantity of not less than 10% is formed in fresh fuel assemblies by controlling the heat carrier boiling intensity.

EFFECT: possible compensation of high margin of reactivity owing to changing the density of heat carrier - retarder during boiling process.

10 cl, 3 dwg