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My point is the combination of the two dissimiar materials one of A106 Gr.B having 0.25% C forms the basis of the joint, there for does that joint still conform to the requriments of the exemption, i dont beleive so.
a) equal to or less than 12mm
b) equal to or less than 127 OD
c) less than 0.15 C content
Its all a matter of interpretation but im definitly in favour of majority rules, so lets hear some more opinions.
I might be setting myself up for dissapointment but here goes.
The most limiting factor I have found is the positions qualified, Fundamental welding positions as per fig 5.1, as far as pipe butts go is only 1G rotated & 2G, whitch is quite limiting really.
Apart from that pre-qualified proceudures would be great and require no additional testing, use the recomended parameters write a WPS and bam, your done.
Welder qualification is a must aswell mind you.
