Abstract
Most of the refining and petrochemical equipment are fabricated by welding. In addition to the construction of new equipment, the welding is extensively used to repair and modify existing ones. However, it is generally recognized that the weld is more susceptible than the base metal to degradation or damage such as mechanical failure and corrosion, and a lot of failure modes associated with the weld are observed in process plants. Accordingly, the proper welding design and fabrication considering the service conditions are vitally important in the engineering. On the other hand, the plant owners are seeking the way to operate and maintain their equipment in a more safe, reliable and cost-effective manner due to the increased global competition. This paper deals with the welding engineering to ensure the integrity and the reliability of equipment throughout the life cycle of refining and petrochemical plants.
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