METHOD FOR RECONSTRUCTING A NUCLEAR REACTOR FUEL ASSEMBLY AND RECONSTRUCTED NUCLEAR REACTOR FUEL ASSEMBLY USING THE SAME

摘要

A nuclear fuel assembly and a method for reconstituting the nuclear fuel assembly which has a top nozzle adapter plate (32) welded to control rod guide thimbles (50) wherein first the thimbles (50) are cut from the adapter plate (32) below the weld, the top nozzle is separated from the cut thimble 50, a new top nozzle (24) refashioned with grooves (74) in its adapter plate (32, 92) control rod passageways, the cut thimbles (50) are inserted into the passageways (72) of the modified top nozzle (24) and the thimbles (50) are circumferentially bulged into the grooves (74). IMAGE