Purge Gas

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Flammable gas or noncondensable inert gas added to the flare header to mitigate air ingress and burnback.

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

Fuel gas or non-condensable inert gas added to the flare header to mitigate air ingress and burnback.

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

“Purge gas” means gas used to maintain forward flow and positive pressure in a safety flare system.

Source: Alaska Oil and Gas Conservation Commission, Definitions, Alaska Admin. Code tit. 20, § 25.990, December 7, 2012. Regulations

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