Method for repairing vertical welds in a boiling water reactor shroud using a clamp with eccentric pins sealed against an interior of the shroud

A method of repairing a weld in a boiling water reactor shroud using a clamp with a pair of pins connected by a structural member, said method comprising the steps of

• forming a pair of openings through the shroud on opposite sides of the weld;
• inserting a pin through each opening in the shroud;
• moving at least one of the pins toward the weld from a rest position to an engaged position by rotating the pin about an axis of rotation offset from a central longitudinal axis of the pin so that the pins are positioned to transmit loads from the shroud to the structural member;
• and
• positioning a seal member between the clamp and the inner surface of the shroud around at least one of the openings.