Are the design pressure and temperature also set at “atmospheric pressure” and “room temperature”?
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If the operating pressure and temperature in the process design documents are specified as “atmospheric pressure” and “room temperature” respectively, can the design pressure and temperature also be set at “atmospheric pressure” and “room temperature”? Can’t this approach be used under any circumstances? Should it be set to “30 degrees” and “0.1MPa”?
Verbalmente non c’è problema, ma non ho mai visto che nei documenti di progetto si scriva in questo modo
I have seen design documents in which the pressure and temperature are set to \"atmospheric pressure\" and \"room temperature,\" so it should be possible.
Operation at normal pressure and temperature indicates that the equipment is in the local atmospheric environment; a design based on normal pressure and temperature means that the device is a non-pressure device. Why are normal pressure and temperature used to describe this? This is because the specific standard values for what constitutes a \"normal\" condition vary depending on the geographical location; for example, the normal temperature in the south should be higher than that in the north, and the normal pressure inland should be higher than that along the coasts ! (Due to different altitudes), so specific values will not be given.
If the operating pressure and temperature in the process design documents are specified as “atmospheric pressure” and “room temperature,” then the design pressure and temperature should also be set at “atmospheric pressure” and “room temperature” – of course!
Equipment whose operating pressure is not at atmospheric pressure is considered pressure equipment; if it is a container-type device, it must be designed in accordance with GB150, and the method for determining the design pressure is specified in GB150. Equipment that operates at atmospheric pressure is considered atmospheric-pressure equipment, and it should be designed in accordance with the design specifications for such equipment. The design pressure should be set at a level not lower than the maximum operating pressure that the equipment might experience; it is the bottom pressure that matters here, and the weight of the material itself must also be taken into account. :lol