Assist Gas

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Flammable gas that is added to relief gas prior to the flare burner or at the point of combustion in order to raise the heating value.

NOTE In some designs, the assist gas can increase turbulence for improved combustion.

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

Combustible gas that is added to relief gas prior to the flare burner or at the point of combustion in order to raise the heating value.

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

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