By engineer1984
Date 07-15-2019 14:48
Edited 07-15-2019 17:10
We weld the weldneck flange to a pipe (both austenitic) and then slip the piping into a bore in the casing. Circumferential fillet weld around piping / casing (Socket weld).
ASME BPVC is what we use. Ultimately, API is what we deal with. API references ISO 10440 (I think this is correct, didn't double check. ISO is geared towards purchasers, not OEMs) and ISO references ASME BPVC.
Leaving weld speed, amperage, cup size, argon flow up to the welder. We have very experienced welders. We do NOT have time for a WPS / PQR for the immediate problem.
I'm not sure why I would need PWHT CA6NM in this specific application. I'm aware of cracking that can occur during welding (we have weld repaired these casings before). We may be able to locally PWHT the area. What reasons are there for PWHT'ing this area? This is a low stress, low vibration, low corrosion area.
What did you butter the CA6NM with?
Cheers,