Morning all,

I've found myself greatly confused about welding positions in WPS as per ASME Sec IX. At first i thought that the same table for WPQ (QW-461.9) was also used for writing WPS, i.e : i work in the field of storage tanks so the main positions we use are 1G, 2G, 3G, 5F and 6G (SMAW and GTAW). So to qualify a wps in 2G and another in 1G we would use one PQR in 2G, to qualify the wps for 3G we use a PQR in 3G, and finally the last positions with a PQR in 6G.

But recently, when doing some researches i found out that if you qualify a PQR in 3G it qualifies WPS for all positions, is it correct ? And if yes where is it stated in ASME bc i can't find it.

Also i have a small question : can we use a WPS qualified in 2G position with a K groove joint to weld in 1G position with a V groove joint without requalifying another WPS ?

Best regards,