Repair welding method for waterwall tubes

摘要

A method for performing repair to a length of water-wall tubing (15) calls for aligning a substitution sleeve (30) in the length; welding an upper internal portion and a lower internal portion of the sleeve to the water-wall tubing (15); placing an upper and a lower element (32) into a respective cutback (31) of the sleeve; and welding an upper external portion and a lower external portion of the sleeve (30) to the respective elements and the water-wall tubing (15) to repair the sleeve. An apparatus is provided.