scope:

Over the last 10 years oil, gas, petrochemical and power generation companies have placed increasing emphasis on developing cost effective, practical and reliable repair and maintenance strategies to prolong plant life. Those efforts have led to the development of comprehensive guidelines for repair welding pressure vessel and piping systems and associated equipment. Procedures selected incorporate the results of major research programs conducted by the Pressure Vessel Research Council (PVRC), Edison Welding Institute (EWI) and others to develop and evaluate repair techniques, suitable with or without PWHT. Optimized methods for pressure vessels and piping systems have now been used in petrochemical and power generation service. This publication focuses on the repair of creep resistant steels e.g., Cr-Mo and Cr-Mo-V steels and reports practical experiences. The information reported from these projects has resulted in the development and validation of repair techniques for specific applications and changes in National Codes, Standards and Recommended Practices. The following Papers were presented at a Workshop co-sponsored by PVRC and EWI on January 31-February 1, 1996 in San Diego, CA.