Guidelines for Repair Welding of Pressure Equipment in Refineries and Chemical Plants: Part 6—Material Degradation and Repair Welding

It has been recognized that repair welding plays an important role in the long term, safe operation of pressure equipment. In 2009, the Japan Welding Engineering Society (JWES) published guidelines for repair welding of pressure equipment, to meet the great need for the safe operation and proper maintenance of aging plants. This paper addresses the key points of repair welding for damaged materials, based on JWES’s guidelines. The various factors to be considered before implementing repair welding and typical methods of repair welding for the major damage mechanisms are summarized.