Patent ID: 8571166
Filing Date: 2013-10-29
Classification: G21C,Y02E

Abstract:
1. A core of a light water reactor having a plurality of fuel assemblies, which are loaded in said core, having nuclear fuel material containing a plurality of isotopes of transuranium nuclides, an upper blanket zone, and a fissile zone, in which said transuranium nuclides are contained, disposed below said upper blanket zone; wherein a ratio of Pu-239 in all said transuranium nuclides contained in said fuel assembly is in a range of 5% or more but less than 40% when burnup of said fuel assembly is 0; an axial length of said upper blanket zone is in a range of 20 to 100 mm; and a lower end of said fissile zone in an axial direction substantially delimits a lower end of said core in the axial direction; wherein the lower end of said fissile zone substantially delimits the lower end of said core without a lower blanket zone between the lower end of the fissile zone and the lower end of the core.