ASME IX WPQ question
ASME IX WPQ question
(OP)
Hello all,
With regards to welder qualification under section IX. I have a client requesting that all welders to qualified with a 2" SCH 160 and 6" SCH 40 in the 6G position with F3 electrodes all the way out. I can not see what the point of the 6" SCH 40 is when accordance with QW-452.1(b) and QW-452.3, the 2" SCH 160 qualifies a welder for everything the 6" SCH 40 does plus more. The 2" SCH 160 qualifies you to weld from 1" OD to unlimited and to the minimum thickness that the production WPS allows to a maximum thickness of 0.686 (2 X T). While the 6" sch 40 allows a minimum OD of 2.8752" (2-7/8") to unlimited, and to the minimum thickness that the production WPS allows to a maximum thickness of 0.560 (2 X T). So unless I am missing something or that this it is just the way their program is run, is there any reason to conduct a 6" SCH 40 WPQ?
-Thank you, Allan James
With regards to welder qualification under section IX. I have a client requesting that all welders to qualified with a 2" SCH 160 and 6" SCH 40 in the 6G position with F3 electrodes all the way out. I can not see what the point of the 6" SCH 40 is when accordance with QW-452.1(b) and QW-452.3, the 2" SCH 160 qualifies a welder for everything the 6" SCH 40 does plus more. The 2" SCH 160 qualifies you to weld from 1" OD to unlimited and to the minimum thickness that the production WPS allows to a maximum thickness of 0.686 (2 X T). While the 6" sch 40 allows a minimum OD of 2.8752" (2-7/8") to unlimited, and to the minimum thickness that the production WPS allows to a maximum thickness of 0.560 (2 X T). So unless I am missing something or that this it is just the way their program is run, is there any reason to conduct a 6" SCH 40 WPQ?
-Thank you, Allan James





RE: ASME IX WPQ question
No reason at all.
Your client obviously has more money than sense.
The usual way if doing two coupons is a thin 2" with a thick 6" so you get maximum diameter, maximum thickness.
Cheers,
DD
RE: ASME IX WPQ question
Perhaps it's a typo (from your client).......it should be 2" SCH 40 and 6" SCH 160.
Regards,
AR
RE: ASME IX WPQ question
AJ
RE: ASME IX WPQ question
6" Sch 80 qualifies the welder to 22 mm maximum WT.
6" Sch 160 qualifies the welder to 36.52 mm maximum WT.
RE: ASME IX WPQ question
RE: ASME IX WPQ question
RE: ASME IX WPQ question