2 replies to this topic

[krishnamurthy]

I am doing psv sizing for fire case wetted wall for  three phase separator. In this case i need to consider adjacent piping volume for calculating the exposed surface area of the vessel.i.e exposed surface area of the vessel can be calculated based on the liquid level high-high and the adjacent piping volume. How to calculate the adjacent piping volume? Pls explain.

[ahmadikh]

 You can calculate the surface area within the exposed section for piping based on the layout and dimensions. Or as a thumb rule, you can consider 10% extra on the wetted surface area of your vessel for the associated piping and fittings.

[fallah]

Hi,

 

As Ahmadikh mentioned, you can consider 10%-15% additional wetted area to account for pipework...