Minimum/Maximu pressure in a vessel

[auba]

Hi all,

1) can anybody tell me what minimum/maximum pressures in a vessel is treated by ASME SEC VIII.

2) what is the minimum pressure in a vessel to call it as a "pressure vessel"...

Thanks

 

[panduru]

@SteveBraune:
I find your interpretation at variance with the reference given by pleckner. pleckner differentiates between specifier and manufacturer (designer).

With due respect.

 

[JohnGP]

panduru,
There is no variance. The design pressure of a vessel or tank is specified on the basis of the pressure at the top of the vessel or tank. This is how the codes interpret it, and it's logical as that is where relief valves are located.

As pleckner highlights, the vessel manufacturer/designer will design a vessel based on the specified design pressure, but also must take account of the liquid head experienced by the bottom of the vessel, or other component, to determine material thickness requirements. It's the same for tanks, wall thickness calculations are based on design pressure plus liquid head at each strake. So if pressure at the top is less than 15psig, then API Std 620 would most likely be the code of choice, as SteveBraune states.
Cheers,
John

 

[panduru]

Thank you, JohnGP.

Panduru