Some issues regarding weld procedure qualification
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The welding methods used in the plant’s original process evaluations were GMAW and GTAW; they were originally established in accordance with JB4708, and were revised in 2012 based on NB47014. The previous evaluations showed that none had pWPS. The welding wires used are 1.0mm MIG wires and 3.2mm TIG wires. As procurement currently only allows for 1.2mm MIG welding wire and 3.0mm TIG welding wire, in accordance with 6.2.3 of 47014-2011, when secondary factors are added or changed, there is no need for a re-evaluation; however, the welding procedure specification must be revised. Furthermore, according to Table 6, Fill Metal 3) – Wire Diameter change – indicates that this welding process evaluation factor serves as an evaluation factor for GMAW, and it is a secondary factor. No w assessment factor is applied to GTAW. So there are a few questions I’d like to ask: 1) Since we are now using wires of types 1.2 and 3.0, does it suffice to simply adjust the pWPS values based on the recommendation table in 47014? If the 1.0 and 3.2 welding wires are available again, is it still necessary to create a new pWPS when using them? 2) The originally prepared welding procedure specifications had numbers WPS-01 and WPS-02. . . . . . It needs to be changed to WPS-01-1 now. . . . . Is that how it’s distinguished? So does it just mean reissuing a welding procedure qualification sheet?
1: According to the standard secondary factors, only the pWPS needs to be revised; the format standards are provided in the appendix. 2: For the numbering of WPS, it is sufficient as long as a distinction can be made; no other regulations apply. This is indicated in the table in Appendix F, under the entry for the welding procedure qualification report number
Keep the original one unchanged; just assign a new sequential number