METHOD OF REFAIRING LEAKS IN STEAM GENERATOR TUBES

摘要

A method of sealing leaking steam generator tubes without substantially restricting the fluid flow area by explosively welding a cylindrical sleeve (18) over the degraded area (16) of the tube (10). The sleeve (18) has a wall thickness of approximately 0.010 to 0.040 inches and a length of about 1.5 to 4.0 inches, the weld occurs over the entire length of the sleeve (18).