{HEAD ~ The unused combustible atmosphere} in the chamber above the parts on the belt is ignited using a burner and vented through the vent in {TAIL ~ the chamber} 
is vented in
{ HEAD ~ The unused combustible atmosphere } in the chamber above the parts on the belt is ignited using a burner and vented through the vent in { TAIL ~ the chamber }
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH REL OTH OTH OTH OTH OTH REL OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL