First edition, May 2020

The statements in this guideline can be applied to existing weld joints as well as to welds performed during fabrication or installation of new plant. The only materials considered herein are stainless steels in compliance with the requirements of the EHEDG guidelines. At the same time, this guideline can also be applied by plantoperators who wish to carry out weld testing on existing equipment within the course of a specified maintenance program.