Pressure range of ASME Pressure Vessel

minumichael · **Joined:** Fri Jan 21, 2011 4:26 pm **Posts:** 13

Dear All,
I want to know the range of ASME Pressure Vessel.It says as 15 Psi to 30,000 Psi.Let me know tat whether it is guage pressure or absolute pressure.

Regards,
Minu

Javed Nasir · **Posted:** Thu Jan 27, 2011 2:54 pm

gauge

sooeey2u · **Posted:** Thu Jan 27, 2011 6:19 pm

Javed,

Shouldn't that range be pressure vessels over 15 psig and not exceeding 30,000 psig?

Robert

Javed Nasir · **Posted:** Fri Jan 28, 2011 1:01 pm

Robert,

You can exceed over 3000 in VIII-1 but specical considerations shall be taken in that case.

sooeey2u · **Posted:** Fri Jan 28, 2011 4:53 pm

Yes I agree but isn't it correct that it is OVER 15psig?

Javed Nasir · **Posted:** Fri Jan 28, 2011 7:30 pm

yes it is over 15 Psig as per U-1(c)(2)(h), static head is not included in this 15 psig.
If design pressure is less than than or equal to 15 psig, vessel may be stamped with Code U Symbol provided all requirements of the Code are met.

minumichael · **Joined:** Fri Jan 21, 2011 4:26 pm **Posts:** 13

Thank you for your right reply

minumichael · **Joined:** Fri Jan 21, 2011 4:26 pm **Posts:** 13

What about Full vacuum ?

Javed Nasir · **Posted:** Sat Jan 29, 2011 3:16 pm

Both internal and external pressure over 15 Psig are in Section VIII-1 Scope, please see U-1(c)(2)(h)(1).
If design pressure (external or internal) is less than than or equal to 15 psig, vessel may be stamped with Code U Symbol provided all requirements of the Code are met, please see opening para. of U-1(c)(2).
Since FV means 101.325 KPa that is greater than 100 KPa (15Psig), so it falls in Section VIII-1 Scope.

ahmad5959 · **Posted:** Tue Mar 08, 2011 2:28 pm

Dear Minu

This question in very simple but many new designer mix that.
The gauge always is used in ASME SEC VIII.
when u see pressure in asme code, you sure that is gauge.

Usually, The absolute pressure is used for machinery design.

Good luck.
Ahmad

Pressure range of ASME Pressure Vessel

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