What does pressure drop in cargo tanks mean and how to calculate it?
pressure drop within a tank can cause damage due to greater atmospheric pressure on the outside.
Cargo tank is normally tested to a positive pressure of 2500 mm of Water Column and negative pressure of -750 mm of Water Column.
How to convert mm of Water Column to bar ?
1000 mm of Water Column = 0.0980665 bar
For practical purposes we can take 1000 mm of water column = 0.1 bar
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