reducing the amount of oxidant supplied via the oxidant conduit when a temperature in {TAIL ~ the fuel conduit} reaches {HEAD ~ a specified temperature} 
reducing the amount of oxidant supplied via the oxidant conduit when a temperature in { TAIL ~ the fuel conduit } reaches { HEAD ~ a specified temperature }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD