Thanks for the replies... the tank has a normal vent. We are doing a risk assessment and this would be a special case when someone makes a mistake and the tank is full but has no vent.
If i were to use the vapor pressure is it just as simple as assuming the tank is at atmospheric pressure...
I am trying to figure out how much vacuum would be drawn on a tank of hydrocarbon that is blocked in. The scenario is the tank is ~90% full and has been isolated. The tank normally has a vent but in this case the vent is also obstructed. I am just interested to see what vacuum the tank would...
