Patent ID: 6351511
Filing Date: 2002-02-26
Classification: G21C,Y02E

Abstract:
A method for reinforcing a beam of a top guide lattice for laterally supporting fuel assemblies in a nuclear reactor pressure vessel, the top guide lattice beam having a weakened region, comprising the steps of:placing a reinforcement member on top of and in alignment with the top guide lattice beam, said reinforcement member overlying and having sufficient stiffness to transmit loads across the weakened region of the top guide lattice beam; installing a first strap around a first portion of the top guide lattice beam and a first portion of said reinforcement member; fastening said first strap to hold said first portions of the top guide lattice beam and said reinforcement member together; installing a second strap around a second portion of the top guide lattice beam and a second portion of said reinforcement member; and fastening said second strap to hold said second portions of the top guide lattice beam and said reinforcement member together; wherein said first and second portions of the top guide lattice beam are on opposing sides of the weakened region, and said reinforcement member bridges the weakened region.