Discussion on non-storage containers for liquefied gas
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If a container holds a liquefied gas, but it is a buffer tank rather than a storage tank, and is placed outdoors in winter (with an average outdoor temperature of -31.8°C as the lowest value), how should the container be classified?
Non-storage containers can be classified using the normal classification methods. The classification of containers has nothing to do with the ambient temperature; it depends on the container category.
I have seen such containers at LPG filling stations; some of them are labeled as category 2 containers. But is the liquefied gas you mentioned LPG? If it is liquefied petroleum gas, then the capacity of the buffer tank needs to be considered (to check whether the pV value is greater than or equal to 10 MPa·m3).
Classification is related to medium, volume, and pressure, but not to temperature
This phenomenon will no longer exist after the new capacity regulations are implemented; the classification of containers is unrelated to their purpose.