OK another dumb question here for you smart fellers. Need some opinions... I have a 2000 bbl API 650 atmospheric storage tank that has water in it with a thin oil pad on top. So, the stored fluid is >98% water. The calc in API 2000 to estimate the required tank venting flowrate due to atmospheric heating of tank and contents is based on the flash point temperature of the stored liquid, i.e. whether it is > or < 100° F. Since the stored liquid is water, what would I use as the flash point temperature? Since water does not off-gas per se, like a HC liquid does, I am thinking this calc does not apply. Opinions? Thanks! Pete
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