Is the emergency vent valve of the spherical tank an automatic valve or a manual valve?
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According to the regulations set out in Sinopec’s documents, a spherical tank should be equipped with at least 2 safety valves and 1 emergency vent line (a secondary line for the safety valves). Should this emergency vent line be fitted with an emergency shut-off valve or a regular manual valve?
Under normal conditions, overpressure does not occur. But how do I open the manual valve in case of overpressure due to a fire?
A fire is a fire, and overpressure is overpressure. If you think that way, then make it automatic
According to the regulations set out in Sinopec’s documents, the emergency vent valve for spherical tanks should be an automatic valve, while for the emergency vent lines, either an emergency shut-off valve or a regular manual valve can be installed. .
It is best to have automatic interlocking for the emergency vent valve