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|1. (WO2017033276) LIGHT-WATER-REACTOR FUEL ROD, AND FUEL ASSEMBLY|
|Title:||LIGHT-WATER-REACTOR FUEL ROD, AND FUEL ASSEMBLY|
Provided are a fuel assembly and a light-water-reactor fuel rod which, should a crack be formed at a jointed portion between an end plug and a fuel cladding tube of which the base material is a ceramic material, can prevent the crack from penetrating through the fuel cladding tube or the end plug. The light-water-reactor fuel rod 10a is provided with: a cylindrical cladding tube 11 of which the base material is a ceramic material; a core 21 formed of a material of which the type is the same as that of the cladding tube 11; and an end plug 12a including a recess 12f which can receive the core 21 and which has a continuous curved surface shape. The end plug 12a is formed of a material of which the type is the same as that of the cladding tube 11. An inclined surface 11a formed at the end of the cladding tube 11 and an inclined surface 12d formed at the end of the end plug 12a come into contact with each other, and are jointed to each other by a metal jointing material 20. The core 21 supports the jointed portion.