This article discusses this question: If a procedure qualification has been qualified with backing, can it be used only with backing? Can it be used for welding without backing as well? Is backing for welding procedure qualification an essential variable? Consider the following question asked in Interpretation IX-17-15. “Background: A PQR consists of a GTAW … Read more
This article discusses a couple of examples in which a PQR has been qualified with dissimilar thickness base metals. How should we use such PQRs? Please note that this discussion is contextual only with ASME Section IX. Please also note that this article is separate from the article ‘Practice Case 3 – WPS For Dissimilar … Read more
This article discusses a few examples when the production weld comprises of dissimilar base metal thickness. What should the WPS for such production welds be like? How must the PQR for such welds look like? Consider the following problem asked in Interpretation IX-13-09. A WPS is qualified for a base metal thickness range of 13 … Read more