1 reply to this topic

[Enginerdo]

Hello,

I have an atmospheric tank (6337 m³ nominal capacity) containing a hydrocarbon (vapor pressure = 33 kPaa). It has an internal floating roof.

On the tank is a 12" mushroom vent.

I'd like to know the air inflow capacity of the 12" vent in the case of liquid flow out of the tank. I'm thinking API 2000 will have the answer.

Can anyone please point me in the right direction?

Thanks

[Dacs]

Hello,

I have an atmospheric tank (6337 m³ nominal capacity) containing a hydrocarbon (vapor pressure = 33 kPaa). It has an internal floating roof.

On the tank is a 12" mushroom vent.

I'd like to know the air inflow capacity of the 12" vent in the case of liquid flow out of the tank. I'm thinking API 2000 will have the answer.

Can anyone please point me in the right direction?

Thanks

If I understand your question, you want to determine the capacity (aka max flowrate) of the 12" vent that is installed in the tank.

If you have a copy of API 2000 8th edition, you might wanna read Section 4.6. There's an equation presented there for the theoretical flow for vents.

Maybe you can use this as your starting point