I was asked to review a WPS that is for an internally threaded coupling (2" diameter) prepped for a J-Groove to a column - the fellow that submitted is arguing that it is a prequalified joint. My contention is that the coupling is considered pipe and pipe to plate is not prequalified. [img][/img]
We had something similar a while back on one of our projects and we used a TC-P8 Pre-qualified PJP WPS with a 1/4" reinforcing fillet....just like you have shown in your picture.....IIRC the coupling was made of A36 material, welding instructions were included in the boxes with the couplings. Apparently these are for DBAs that are threaded and screw into the coupling after the beam that the couplings are welded on is erected.
But, since there is no fluid flow through either the coupling or rebar(?), it is now just an HSS, structural tubing, or as we called it in my Ironworker days "O Beam". So as long as the material falls within a prequalified group, you should be good.
The missing link in this discussion is whether the joint is CJP or PJP. If CJP is not a requirement, it is prequalified as long as the edge preparation is such that there is no burn through. If CJP is required, and it is a single sided groove weld without backing; it is not prequalified.
Whether there is fluid flow or not is not germane to the question.
the couplings are to receive threaded rebar (the column is in a grade beam and they are using this method of attachment to the column) it is being called out as a PJP - I was going to call AWS tomorrow looks like John W had just about the same thing I'm doing on my job so think I'll give him this one. Thanks for the input! First time since 1995 I've come to the forum with a question... appreciate your help!
The joint is prequalified. If it is welded in the position shown (5G/5F) the progression would need to be vertical up. If the procedure calls for vertical down progression, the procedure would not be prequalified.