What standards should be used in the design and manufacture of atmospheric pressure vessels with design pressures other than zero?
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This post was last edited by WallaceLee on 2020-8-4 13:51. The poster needs to design an atmospheric pressure vessel with a design pressure of -0.5~2.7kpa, but as shown in the figure, the standard NB/T 47003.1 "Steel Welded Normal Pressure Vessels" does not seem to apply. So I want to ask two questions: 1. How to understand that the design pressure is zero? Does it mean open container? 2. If the design pressure is not zero, what standard should be used as the basis for design and manufacturing?
This post was last edited by Shutong on 2019-12-13 16:40. A design with zero pressure is not necessarily an open container. A container with an exhaust pipe is an example.
The design pressure is -0.5KPa, which is equal to -0.0005MPa. This value is much smaller than -0.02MPa and does not meet the standard range, so it is not applicable to NB/T 47003.1 "Steel Welded Atmospheric Pressure Vessels"
Thank you for your reply. Then I would like to ask which standard specification should be used for the design and manufacture of atmospheric pressure vessels whose design pressure is not zero?
This post was last posted by Shutong on 2019-12-13 18:43. The editor recommends taking a look at JBT 4735-1997 to see if the design pressure meets the requirements of this regulation.
-0.0005MPa>-0.02MPa! Container specifications applicable to NB/T 47003.1, JB/T 4735-1997 has been invalidated, and the current specification is NB/T 47003.1
The design pressure is -0.5KPa, which is equal to -0.0005MPa. This value is much smaller than -0.02MPa and does not meet the standard range, so it is not applicable to NB/T 47003.1 "Steel Welded Atmospheric Pressure Vessels"