Hello,
To calculate the venting requirements in a tank, I follow API-2000 and I assume that the required venting due to liquid movement and thermal is expressed in m3/h (ft3/h) of air. Then, I convert it to m3/h (ft3/h) of gas dividing by SQRT(SGgas). Recently, I have been told that this procedure only applies in the inbreathing calculation, but the outbreating calculation is giving directly the m3/h (ft3/h) of gas. Can someone advise or comment in the subject?
Thank you,