Can flat-bottomed storage tanks with normal pressure and a design pressure of 0.01, as well as inclined-roof storage tanks calculated based on a flat lid, be tested only for water containment?
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RT, I recently encountered a problem with a pressure vessel that has a flat bottom and an inclined top. It can be treated as a vessel with a flat cover at a pressure of 150, but the design specifications specify a design pressure of 0.01 MPa. Although it belongs to the category of non-standard vessels, I still carried out calculations; for a vessel with a flat bottom and an inclined top, it’s necessary to thicken the structure, and the only solution is to use a reinforced flat cover. If the vessel is to be used only for water testing, costs can be reduced significantly, but there’s still this requirement of a design pressure of 0.01 MPa. Could such a non-standard vessel be used for water testing only under a design pressure of 0.01 MPa? Thank you!
A water-filled test can be conducted, provided that there are breathing holes； If there are no breathing holes, it is a result of inadequate design considerations.
Thank you. Where can I find the standards in this area? Thank you so much!
NB/T4703-2009
Why not follow NB/T 47003.1-2009 \"Steel Welded Atmospheric Pressure Vessels\"? There is flat-cover calculation included; selecting the water-filled test based on this standard is feasible~
They must have just joined a criminal gang and lack experience.
0.01MPA； 1 meter water column pressure!
What was said upstairs is correct; use 47003.1 for atmospheric pressure vessels
Later, after communicating with the design institute, it was determined that a design pressure of 0.01 corresponds to hydrostatic pressure; therefore, only a water filling test is required: lol
The person who put forward this condition doesn’t understand that the pressure in a storage tank refers to the pressure of the gas phase at the top of the tank; if the pressure at the top is 10 kPa, then it is a low-pressure storage tank, not a tank at atmospheric pressure
What was said upstairs is right; these conditions indeed are problematic