Changes Contained in the 9th Edition of API 510, Pressure Vessel Inspection Code: In-Service Inspection, Rating, Repair, and Alteration

By Stephen J. Gliebe, P.E.

The 9th Edition of API 510, “Pressure Vessel Inspection Code: In-Service Inspection, Rating, Repair, and Alteration,” was released in June 2006 and became effective no later than December 2006. It is a total revamp of Addendum 4 dated August 2003.

The changes made since the prior version have not been highlighted in the 9th Edition, and many of the existing paragraphs have been moved to other sections. A careful review of the new document is recommended to ensure that all the changes and new requirements are identified, and are reflected in your organization’s quality control systems.

Below are some of the key changes.