Agreed on the UG-8 reference - my AI and I are on the same page here. Until ASME Section II adopts SA-928 into the code as an acceptable material form for Duplex pipe, we will plan on rolling/welding SA-240 on all future projects.
Thanks again for the help everyone.
Doug
I believe the hangup is that we feel a partial data report must accompany the MTR, as it is not exempted in UG-8 or UG-11.
But looking closer at UG-11(d), I am starting to believe that we would be exempted per this section.
I believe that I can make the case that a pipe is a "standard...
That will certainly be the plan moving forward (rolling/welding our own SA-240 plate in-house) - we were just trying to see if we could use what we had already purchased. And in the case of the 10" here, already incorporated into a vessel fabrication. We can always replace the section...
My AI likes that A928 requires ASME quality welding, but is still rejecting the MTR because A928 is not in Section II.
UG-8 PIPE AND TUBES
(a) Pipe and tubes of seamless or welded construction
conforming to one of the specifications given in Section II
may be used for shells and other parts of...
I did some more reading into ASTM A928, and Section 6.2 for welding says that all welding of the rolled SA/A-240 plate must be completed according to ASME - excerpt below from ASTM A928/A928M:
Section 6.2 - Welding
Welding procedures and welding operators shall be qualified in accordance with...
It looks like they have certified it to A928 and stamped the pipe "A928 CL 1 UNS S32750". But this is an ASTM specification, so not usable on ASME without reference to SA-790 correct? Or is there something I am missing here?
And to answer the other question, microstructure was satisfactory...
For Duplex 2507 material (UNS S32750), I am working with a few different vendors that are telling me that larger diameter pipe (>8") will typically be supplied as SA-240, rolled/welded with 100% RT, and reference to dimensional tolerances of A928 (but not SA-790, which is the supported pipe...
All,
I ran into a problem this morning regarding Appendix EE and the note stating that this non-mandatory code section is only applicable when both of the below statements are true:
(a) There is positive pressure inside the shell or head.
(b) There is positive pressure inside the half-pipe...
