Definition(s)


Destruction Efficiency

Mass percent of the original combustible vapor that is no longer present in the combustion products.

Source: API STD 521, Pressure-relieving and Depressuring Systems, Sixth Edition, January 2014. Global Standards

Destruction Efficiency

Mass fraction of the fluid vapour that can be oxidized or partially oxidized. NOTE For a hydrocarbon, this is the mass fraction of carbon in the fluid vapour that oxidizes to CO or CO2.

Source: API STD 521, Pressure-relieving and Depressuring Systems, Fifth Edition, January 2007 (Addendum May 2008). Global Standards 

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