Welder qualification with inert backing gas
Welder qualification with inert backing gas
(OP)
QW-408.8 of ASME IX states that the omssion of an inert backing gas calls for requalification if used in the WPQ. If the welder was tested on a pipe with an inert gas backing, is he qualified for butt welding plate single sided, complete penetration, without any backing?





RE: Welder qualification with inert backing gas
"Requalification is not required when welding a single welded butt joint with a backing strip or a double-welded butt joint or a fillet weld."
RE: Welder qualification with inert backing gas
RE: Welder qualification with inert backing gas