Vessel is a Steam Turbine Blowdown Vessel. ASME Design is 50 PSIG at 750° F. Client asked for a few P91 nozzles which I can not weld directly to SA-516-70. I believe I will follow the earlier suggestion and utilize a P22 transition piece.
I'm having an issue installing a P91 pipe into a SA-516-70 Pressure vessel. It seems I have to transition from P91 to P22 and then to SA-516-70. With that said, I'm assuming I have to place a P22 sleeve around the P91 pipe prior to installing it into the tank. Is anyone familiar with this...
The tank is an HRSG Blowdown and is in line downstream from a boiler. These tanks are used to expend an overflow of steam. The piping from the boiler is Chrome Molly and the engineering house wants to use chrome nozzles in the vessels. Design Temperature is 710° F @ 150 PSIG.
The ASME...
Welding a P-11 pipe to a P-1 tank do I need to Post Weld Heat Treat the weld or is there a thickness or preheat loop hole in ASME Section IX? Tank is 3/8" nominal SA-516-70 material. Pipe is SA-335-P11. I can also change from P-11 to P-22 or P-5.
