D1.1 WPS Question
D1.1 WPS Question
(OP)
I have a question about the prequalified joints. Our engineer wants to make a WPS and PQR for each weld joint we make and different ones for each customer. I was reading D1.1 and it seems we can use prequalified WPS so we don't have to make PQR's and from what i've read, use the prequalified joints to simplify and eliminate so many WPS's. The last CWI that was here made over 130 WPS's. Can you explain this a little better or reference where I need to read again in D1.1.
Thanks,
Thanks,





RE: D1.1 WPS Question
The type and number of WPSs required can be customer driven. I have a client that insists on separate WPSs for each weld type and groove detail used on his projects. He requires a WPS for single pass fillet welds, another WPS for multiple pass fillet welds, a different WPS for a single V-groove and another one for a double V-groove, and so on. The number of WPSs for a intricate project can become unwieldy to say the least.
Other clients are satisfied to have a single WPS that is general and included a number of weld types and groove details.
There is no single correct answer. That being said, welders in general are not paper pushers. If the paperwork, i.e., the number of WPSs, becomes overburdening, they simply don't use them. That result is counter to the intent and purpose of the WPS.
Best regards - Al
RE: D1.1 WPS Question
http://www.FerrellEngineering.com
RE: D1.1 WPS Question
RE: D1.1 WPS Question
Unless driven by contract or material requirements, there should be no need to run PQR's for procedures that would otherwise be prequalified. GTAW really hit the nail on the head with his last comment.