Does anyone know if Section VIII supersedes B31.3. Or is there a hiearchy for these standards.
I have a customer who wants to re-rate a ASME Section VIII pressure vessel to meet B31.3. I am not sure if the design will change or just the inspection and NDE requirements.
Any thoughts here...
Yeah, it would certainly be eaiser to use 300# flanges but then I would have to change the Product Manager's mind. And I think we all know the difficulties of changing Marketing's mind.
Thanks for the help.
1) If I run the Sect. VIII appendix 2 calcs on a standard B16.5 flange, can I use it for a higher temp/press rating? Vessel design conditions are 200psig & 650°F, but B16.5 says that for a 4" flange (SA-105) at 650°F the pressure rating is only 125psig. I have done most of the calcs by hand...
Yes, the product is a valve. The internals can only withstands a certain temperature. So, I am looking to determine if the process of welding the pipe in the SW connection will transfer too much heat to these internals. Only concerned with the temperature of the product. So I want to know how...