ASME B31.3 Pressure Vessel?
ASME B31.3 Pressure Vessel?
(OP)
Hi All,
I have often heard people quote that you can use B31.3 to build pressure vessel as well. I have not been able to find that section in B31.3. Can someone please help.
Thanks
I have often heard people quote that you can use B31.3 to build pressure vessel as well. I have not been able to find that section in B31.3. Can someone please help.
Thanks





RE: ASME B31.3 Pressure Vessel?
RE: ASME B31.3 Pressure Vessel?
Regards, John
RE: ASME B31.3 Pressure Vessel?
RE: ASME B31.3 Pressure Vessel?
RE: ASME B31.3 Pressure Vessel?
Take for example, the type of volume bottle often placed beneath a PSV to damp local fluctuations in a reciprocating compressor system. Normally made from ordinary piping components, it may be a fat pipe or a pressure vessel. What makes it a vessel? A vessel tag number, usually assigned by a process engineer ?
RE: ASME B31.3 Pressure Vessel?
EJL
RE: ASME B31.3 Pressure Vessel?
Just because you can fabricate a vessel out of "ordinary piping components" doesn't make it a pipe. You could in theory buy 48" pipe and end caps and make a nice KO drum out of it. That doesn't mean the proper code of construction would be B31.x. The key thing to look at is the function of the drum.
Pull out Interpretations Volume 56 and read Interpretation VIII-1-04-47.
jt
RE: ASME B31.3 Pressure Vessel?
RE: ASME B31.3 Pressure Vessel?
I have no problem with that. Which exception in U-1(c)(2) are you claiming? Assuming, of course, that you are not in a jurisdictional environment which exempts you from VIII for vessels.
jt