METHOD FOR RECONSTRUCTING A NUCLEAR REACTOR FUEL ASSEMBLY AND FUEL ASSEMBLY RECONSTRUCTED BY A NULAR REACTOR

摘要

In the method for reconstituting a nuclear fuel assembly comprising a mounting plate (32) of upper end welded to guide tubes or socks (50) of control rods, the guide tubes (50) are first cut from the mounting plate (52) below the weld, the upper end of the cut guide tube (50) is separated, a new upper end (24) is machined by forming grooves (50) in the passages (72) for control bars of its mounting plate, the cut guide tubes (50) are inserted into the passages (72) of the modified upper end piece (24) and the guide tubes (50) are circumferentially protruded into the grooves (74).