RECONSTITUTABLE FUEL ASSEMBLY

摘要

A reconstitutable fuel assembly which includes an easily removable bottom nozzle (26) designed to permit accessibility for the detection, removal and replacement of failed fuel rods (12). The nozzle (26) is mounted by fasteners (30) having tapered ends which lead the fastener into a guide tube end plug (36), and complementary threads (38, 40) on the fastener and end plug then draw the parts together when the fastener is screwed into position. Locking flanges (56, 82) on the fastener (30) coact with sections of the nozzle (26) which preclude loosening of the fastener during subsequent reactor operation.