Case study of the use of API 581 on HK and HP Material Furnace Tubes

Risk-based inspection guidelines have been created by several technical societies, most notably the ASME and API. This study intends to show how one of these techniques, American Petroleum Institute, API 581 assesses risk and determines inspection intervals of furnaces tubes. The paper also explains the difficulties of applying API 581 and discusses the meaning of the results and the inspection program proposed in API 581.