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Venting Capacity On Atmospheric Tank
Started by Enginerdo, Oct 06 2010 12:33 PM
1 reply to this topic
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#1
Posted 06 October 2010 - 12:33 PM
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
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
#2
Posted 06 October 2010 - 07:29 PM
If I understand your question, you want to determine the capacity (aka max flowrate) of the 12" vent that is installed in the tank.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 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
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