Patent ID: 8223914

Claim:
A spent fuel storage rack for a nuclear facility, the spent fuel storage rack having a rectangular parallelepiped shape comprising a lattice having cells that are configured to separately accommodate a plurality of fuel assemblies in a matrix of rows and columns, the spent fuel storage rack comprising: a base configured to support lower parts of fuel assemblies, the base forming a bottom surface of the spent fuel storage rack; an outer frame located above the base, the outer frame forming an outermost periphery of the spent fuel storage rack; and a lattice body disposed inside the outer frame, the lattice body forming the cells; wherein the lattice body includes: a main lattice located at a position corresponding to the active part of the fuel assemblies, the main lattice having a height equivalent to an active length of the fuel assembly and made of boron-added stainless steel; an upper lattice disposed above the main lattice and above the active part of the fuel assemblies, and including a groove located so as to be fitted to an upper end of the main lattice; and a lower lattice disposed between the base and the main lattice and below the active part of the fuel assemblies, and including a groove located so as to be fitted to a lower end of the main lattice, wherein the main lattice made of boron-added stainless steel is fitted in the grooves of the upper lattice and the lower lattice and is thereby integrated therewith.