Dear Manoj
Technically in your case you can not .As in your case GTAW process is qualified for base metal up to 12mm therefore you can not use GTAW process for base metal thk more than 12 mm (Therefore generaly PQR for multiple process being qualified on the test plate having more than 38mm plate to cover max base metal range)
Regards
Hegde P.b.
From: manoj john <manojacgnr@gmail.com>
To: materials-welding@googlegroups.com
Sent: Mon, 6 June, 2011 5:26:22 PM
Subject: [MW:11264] COMBINATION OF 2 PQR IN ONE WPS
Dear All,
I have to weld 40 mm thk ss 304 plate to be welded with root GTAW and
subsequent run by SMAW. I have 2 WPS,one WPS GTAW + SMAW thickness
range qualified is 1.6 to 12 mm and another procedure qualified 5 mm
to 50 mm with back gouging.
My doubt is can i make one wps supporting with these 2 Procedure
Root with GTAW and subsequent run with SMAW so i can carry out the
welding with GTA + SMAW 40 mm thk without further procedure
qualification.
Thanks & Regards.
Manoj
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