welder qualification ASNE SEC IX
welder qualification ASNE SEC IX
(OP)
My welder has welded a test coupon of 1/2" OD with 5.0 mm thickness with GTAW process in 1G position,same welder has also welded a 6" OD coupon with 10.97 mm thickness in 1G position with GTAW process.He has passed RT test as required by ASME sec IX.
So can the same welder be used to weld a 48 mm OD pipe in 1G position for 15 mm thickness with GTAW process?
a quick reply is highly appreciated.
So can the same welder be used to weld a 48 mm OD pipe in 1G position for 15 mm thickness with GTAW process?
a quick reply is highly appreciated.





RE: welder qualification ASNE SEC IX
His qualified range is 1/2" OD thru max dia unlimited, with wall thickness 22 mm max.
RE: welder qualification ASNE SEC IX
Unless Lahane has made a typo a single 1/2" coupon is not sufficient to satisfy QW 302.2.
He would need 3 x 1/2" coupons to satisfy this clause.
So he cannot weld the 48 mm pipe as his qualification is minimum 73 mm (2 7/8")OD,
Regards,
Kiwi
RE: welder qualification ASNE SEC IX
I made the assumption that the welder had been qualified on 1/2" dia. per Sec IX rules.
RE: welder qualification ASNE SEC IX
So i guess he can weld 48 mm OD.
RE: welder qualification ASNE SEC IX
Regards,
Kiwi