Can the design pressure be written as atmospheric pressure?
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Question: Can the design pressure be expressed as atmospheric pressure?
If it is a device at atmospheric pressure, it can certainly be determined to be at atmospheric pressure
If it is a equipment at atmospheric pressure, should the design pressure be specified as atmospheric pressure? (The operating pressure is indicated as normal pressure, and the design pressure is also marked as normal pressure; it doesn’t seem right.) ； The design pressure is the highest pressure at the top of the container, and its value is not lower than the operating pressure ； The highest pressure should be a specific value, right?)
Since it’s design pressure, it has to be calculated based on a specific value, right?
If it is at atmospheric pressure, it cannot be written as 0.1 MPa; instead, it should be written as “atmospheric pressure” or ATM.
Reply to 5# gaoyuanqiang123: Why not write it as (for example, 0.05MP)? It’s the specific numerical value
If the container category is normal pressure and the operating pressure is 0.1 MPa or less, it can be labeled as normal pressure
This may require analysis on a case-by-case basis. If it is a container type, especially a closed-container, this indicates that pressure may not be sufficient. This is acceptable for open pools, tanks, etc. If it is installed in a liquid medium at atmospheric pressure, it may still be necessary to define a maximum allowable pressure value.
The design pressure can certainly be set at atmospheric pressure; generally, there is a design pressure, an operating pressure, and a maximum pressure
There seems to be no objection to the design pressure of atmospheric-pressure equipment being the same as the operating pressure
Atmospheric pressure refers to a pressure of less than 0.1 MPa. Of course, in reality the pressure it can withstand is more than just that; there’s always some margin left.