OPERATION METHOD OF FAST NEUTRON NUCLEAR REACTOR WITH NITRIDE FUEL AND LIQUID-METAL COOLANT Russian patent published in 2017 - IPC G21C1/00 

FIELD: power industry.

SUBSTANCE: method consists in transition to operation on nitride uranium-plutonium fuel in equilibrium mode during several campaigns, in which an active zone is divided into three radial subzones: a central, an intermediate and a peripheral, and the subzones are loaded with starting fuel in the form of uranium nitride. Enriched uranium nitride with addition of plutonium nitride of SNF VVER energy composition with different plutonium enrichment of heavy metal is used for the central and intermediate subzones, and then the regeneration of spent fuel is carried out, which consists in partial purification of spent fuel from fission fragments and addition of depleted uranium nitride after each campaign.

EFFECT: power flattening by campaigns and change of reactivity within the effective proportion of delayed neutrons with the same diametres of fuel elements, core height and fuel density in each campaign without additional adjustment, without changing the design of the active zone.

3 dwg