Good afternoon,
1) Yes, any change of a P-number requires a new PQR and WPS
2) No, you can weld all material that are of the same P-number with the your original PQR. Let’s say you used SA-516 Gr 70 to run your PQR using a GMAW/FCAW process. You would be able to weld SA-106 Gr B using the GMAW/FCAW process without running a new PQR.
3) No, look at QW 423.1 if a welder qualified on any base metal in the left column they are qualified to weld on any base metal in the right column. If a welder qualified on a P1 material they would be able to weld P1 thru P15F, P34 and P41 thru P49 materials. But be aware of the filler metal F-numbers.
Example:
A welder is qualified on P 1 material using GTAW E70S-2 (F6) and SMAW ER7018 (F4). The welder would be qualified to weld on P8 material but only in the GTAW ER316 (F6) process, not the SMAW E316 (F5) due to the F-number being different from the F-numbers qualified.
Thank you,
Ken
From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of Engineer Mech
Sent: Saturday, October 30, 2010 8:25 AM
To: materials-welding@googlegroups.com
Subject: [MW:7947] QW 423 & QW 424(P.no) conflicts.... Clear me.
Dear All,
1)if P.no is changing, For example from P.no X to P.no Y, either we have to go for new WPS & new PQR or not, Clear me.. (Same Process)
&
2) If base material is changing within P.NO 1, example, A106 to A36. Either i have to go for new PQR or not, & welder to be qualified for tat base material changing within P.no. 1 or not? (Same Process)
& 3) one welder got qualified in P.No X, is he only qualified to weld tat P.No only, am i correct or not... (Same Process)
Pl clear me about above three...
--
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