Patent ID: 6343107
Filing Date: 2002-01-29
Classification: G21C,Y02E

Abstract:
A repair apparatus for repairing a shroud in a nuclear reactor pressure vessel, the reactor pressure vessel comprising a core shroud having a plurality of shroud lugs around the circumference of a first end of the core shroud, a shroud support structure arranged to support the core shroud inside the reactor pressure vessel so that the shroud and a side wall of the reactor pressure vessel define an annulus therebetween, a second end of the shroud is coupled to the shroud support structure, said shroud repair apparatus comprising:an upper stabilizer assembly configured to couple to a shroud lug, said upper stabilizer comprising a stabilizer block and an upper stabilizer wedge slidably coupled to said upper stabilizer block; a lower stabilizer assembly, said lower stabilizer comprising a stabilizer block and an lower stabilizer wedge slidably coupled to said lower stabilizer block, said lower stabilizer block configured to engage the shroud; and a tie rod having an outer surface, said tie rod extending between and coupled at a first end to said upper stabilizer assembly and at a second end to said lower stabilizer assembly.