External pressure (vessel)
External pressure (vessel)
(OP)
Can anyone please tell me what is basically meant by external pressure when we talk about pressure vessel , is it atmospheric or what .. please elaborate
thanking in advance
thanking in advance





RE: External pressure (vessel)
Reading back over that, I am not convinced my explanation is going to click. Anyone want to elaborate or correct that??
Granted, it can also be applied if the vessel is buried underground or water; it will be subject to an external pressure equal to the loading caused by the water (hydrostatic head) or soil.
RE: External pressure (vessel)
However, it can carry other meanings as well. For example, tubes in a shell & tube exchanger are subject to internal (tubeside) pressure and external (shellside) pressure which are not limited to atmospheric..
And as chaulklate noted, hydrostatic pressure on a submerged vessel is external pressure.
Depends on the physical situation.
Regards,
Mike
RE: External pressure (vessel)
RE: External pressure (vessel)
I saw the results of omitting this in a nitric acid plant. The entire core pipe, several hundred metres of expensive stainless was collapsed into two lobes when the jacket was hydrotested. One simple calc would have avoided this multi-million £ error.
RE: External pressure (vessel)