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Purging a oxidizer into an operating oven?

Question asked by on Feb 21, 2017

NFPA 86 - 15 states that you can't purge an oven into an operating oxidizer unless proving the flammable concentration is less than 50% of the LFL. What about purging an oxidizer into and operating oven burner chamber with the effluents (VOC's) from the oven included in the oxidizer purge air?