Classification of pressure vessels
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Regarding the classification of pressure vessels in the safety technical regulations for fixed-pressure vessels: The classification of pressure vessels takes into account the operating pressure, the type of vessel, and the working medium. Is this working medium limited to gases, liquefied gases, and liquids whose maximum operating temperature is equal to or higher than their standard boiling point? Other media besides these should not be classified under the scope of tolerance specifications; is this understanding correct?
One of the criteria for inclusion in the tolerance specifications is the medium; any medium that does not meet the requirements cannot be classified under these specifications, let alone assigned to a specific category.
The new pressure vessel regulations require that the classification of such vessels take into account the design pressure and volume, that is, the PV product; thereafter, the category is determined based on the two types of media involved. To fall under the scope of these regulations, it is necessary to meet all three conditions specified in them
What the person upstairs said is correct – what media are specified in the tolerance standards? Are media limited to gases, liquefied gases, and liquids with a maximum operating temperature higher than or equal to their standard boiling point?
Reply to 4# liu*aoyu58: Yes