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[Julian D]

Hi all,

 

Does anyone know if emissions from low pressure tanks can be estimated? EPA TANKS 4.0.9d (which is ok for estimating working/standing emissions from cylindrical tanks) does not contemplate spherical or pressurized tanks.

 

EPA AP-42 states the following for high pressure tanks:

 

3.1.4 Pressure Tanks 

Losses occur during withdrawal and filling operations in low-pressure (2.5 to 15 psig) tanks when atmospheric venting occurs. High-pressure tanks are considered closed systems, with virtually no emissions. Vapor recovery systems are often found on low-pressure tanks. Fugitive losses are also associated with pressure tanks and their equipment, but with proper system maintenance, these losses are considered insignificant. No appropriate correlations are available to estimate vapor losses from pressure tanks.

 

But it says nothing else about low pressure tanks with no vapor recovery systems and their fugitive/diffuse losses.

 

If someone has any data it'll be greatly appreciated.

 

Thank you!

 

 

Julian

Edited by Julian D, 01 February 2013 - 09:33 AM.