PWR nuclear fuel rod-based BWR square nuclear fuel assembly manufacturing method and nuclear fuel assembly

摘要

PPROBLEM TO BE SOLVED: To solve the problem wherein cost reduction of a scale is insufficient, because each nuclear fuel assembly loaded in a BWR and a PWR is not the same, though having many similar points. PSOLUTION: U235 enrichment, Pu enrichment, the material, shape and size of each cladding tube used for a square-shaped nuclear fuel assembly are allowed to match, respectively with U235 enrichment, Pu enrichment, the material, shape and size of each cladding tube used for a nuclear fuel for PWR. When MOX is to be used as the nuclear fuel, a combustible toxic substance-cum-moderator of lithium or boron is used. PCOPYRIGHT: (C)2008,JPO&INPIT