fruiz79
Mechanical
- Sep 14, 2010
- 1
Hello, I was trying to interpre U-1(c)(2)(f), and I found the following interpretation issue by ASME:
Subject Description: Introduction, U-1(c)(2)(f), Pressurized Air in a Vessel Containing Water
Date Issued: 11/06/2009
Record Number: 09-771
Interpretation Number : VIII-1-10-11
Question(s) and Reply(ies):
Question: Paragraph U-1(c)(2)(f) recognizes that a vessel may
be designed with a constant mass of air that serves as a
cushion of pressurized air. When water enters the pressure
vessel, the air pressure so created is directly related to the
increase in water volume and the associated decrease in air
volume in the vessel. Is a pressure vessel containing water
with a design pressure of less than 300 psi (2 MPa) and a
design temperature of less than 210ºF (99°C) and is designed
to be pressurized by air from an external source a class of
vessel that is not included in the Scope of ASME Section
VIII, Division 1 per U-l(c)(2)(f)?
Reply: No.
I would like to know, why was the answer to the question negative?, if clearly, They are talking about a hydropneumatic tank that fall into the exceptions of scope of ASME BPVC VIII, per U-l(c)(2)(f)
Subject Description: Introduction, U-1(c)(2)(f), Pressurized Air in a Vessel Containing Water
Date Issued: 11/06/2009
Record Number: 09-771
Interpretation Number : VIII-1-10-11
Question(s) and Reply(ies):
Question: Paragraph U-1(c)(2)(f) recognizes that a vessel may
be designed with a constant mass of air that serves as a
cushion of pressurized air. When water enters the pressure
vessel, the air pressure so created is directly related to the
increase in water volume and the associated decrease in air
volume in the vessel. Is a pressure vessel containing water
with a design pressure of less than 300 psi (2 MPa) and a
design temperature of less than 210ºF (99°C) and is designed
to be pressurized by air from an external source a class of
vessel that is not included in the Scope of ASME Section
VIII, Division 1 per U-l(c)(2)(f)?
Reply: No.
I would like to know, why was the answer to the question negative?, if clearly, They are talking about a hydropneumatic tank that fall into the exceptions of scope of ASME BPVC VIII, per U-l(c)(2)(f)