Shroud repair clamp
AssigneeGeneral Electric Company
InventorsRobert W. Whitling, Barry H. Koepke, James E. Charnley
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Abstract
A method and an apparatus for repairing a shroud in which the top guide support ring has been subjected to stress corrosion cracking. The method involves the placement of a plurality of clamps around the outer circumference of the shroud at a plurality of azimuthal positions between jet pump assemblies. The clamps structurally replace the welds that join the top guide support ring to the upper and lower shroud walls. The shroud repair clamps support the top guide, the fuel bundle assemblies and the shroud head. The shroud repair clamps are bolted to the shroud above and below the top guide support ring in a manner which will prevent relative movement across the top guide support ring welds during all normal and upset conditions.
Claims7
A method for repairing a reactor core shroud having a circular cylindrical upper shroud wall of first diameter, a circular cylindrical lower shroud wall of second diameter less than said first diameter, and an annular support ring having a radially outer portion welded to said upper shroud wall and a radially inner portion welded to said lower shroud wall, comprising the steps of clamping said upper shroud wall to said lower shroud wall at a plurality of azimuthal locations distributed about the periphery of said support ring.
Dependencies are inferred from the claim text.