See ASME Section IX QW-200.4 especially QW-200.4 (b).
QW-200.4 (b) allows combination of root procedure with any thicker
qualified fill procedure provided the base metal thickness as 13mm or
greater.
John
-----Original Message-----
From: materials-welding@googlegroups.com
[mailto:materials-welding@googlegroups.com] On Behalf Of manoj john
Sent: Monday, June 06, 2011 6:56 AM
To: materials-welding@googlegroups.com
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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