Utilizing On-stream Inspection Techniques in the Petroleum/Petrochemical Industry in Lieu of Internal and Turnaround Inspections

摘要

This paper describes some of the advanced on-stream inspection (OSI) methids available for use in inspection of pressure equipment in the petroleum and petrochemical industry. these methods can be used, under the right circumstances, to supplement or in lieu of invasive and turnaround inspection, usually at much lower cost. Cost savings associated with using OSI techniques in lieu of internal inspections may include lower total inspection costs, lower turnaround costs, avoiding lost production opportunities, and avoiding vessel cleaning and decontamination costs. On-stream inspection also avoids the safety hazards associated with confined space entry of vessels. However, to achieve these savings and benefits, and still maintain high levels of pressure equipment integrity, the owner-user must understand the technologies in order to intelligently select, apply and interpret the results of these nondestructive evalaution(NDE) methods.