FAST NEUTRON REACTOR CORE WITH LEAD COOLANT, FUEL RODS AND FUEL ASSEMBLY FOR ITS MANUFACTURING Russian patent published in 2015 - IPC G21C1/00 

FIELD: power industry.

SUBSTANCE: reactor core, fuel rod and fuel assembly for its manufacturing are intended for use in fast neutron reactors with nitride fuel and liquid-metal coolant, mainly as melted lead and its alloys. Core contains three parts, i.e. central, interim and peripheral, that are made by the fuel assemblies with fuel rods having different height of fuel column in the rods of the central, interim and peripheral parts with same enclosure. Radial fuel distribution over the core volume is characterized in stepped cross-section. Radius of the core central part is from 0.4 to 0.5 of effective core radius, and fuel column height in fuel assembly rods of the central part is from 0.5 to 0.8 of height of fuel column in fuel rods installed in the fuel assemblies of the core peripheral part.

EFFECT: simplified design of core with negative hollow effect of reactivity and effective balancing of the energy release along its radius.

4 cl, 2 dwg