LIQUID-METAL-COOLED FAST REACTOR CORE COMPRISING NUCLEAR FUEL ASSEMBLY WITH NUCLEAR FUEL RODS WITH VARYING FUEL CLADDING THICKNESS IN EACH OF THE REACTOR CORE REGIONS

摘要

A liquid-metal-cooled fast reactor core including a nuclear fuel assembly with nuclear fuel rods with varying a fuel cladding thickness in each reactor core region is provided to improve a nuclear fuel collector and a nuclear fuel rod through simplification of the nuclear fuel collector. A liquid-metal-cooled fast reactor core including a nuclear fuel assembly with nuclear fuel rods with varying a fuel cladding thickness in each reactor core region includes a plurality of internal reactor core nuclear fuel collectors, a central reactor core nuclear fuel collector, and an external reactor core nuclear fuel collector. Nuclear fuel materials are surrounded by covering materials and are provided in a hexagonal duct. The covering materials of the internal reactor core fuel collector, the central reactor core nuclear fuel collector, and the external reactor core nuclear fuel collector have different thicknesses for each reactor core region.