The blowoff and liftoff characteristics of lifted turbulent diffusion flames of liquefied petroleum gas and compressed natural gas are investigated with a range of burner diameters. Uninhibited flames as well as flames inhibited by either Bromotrifluoromethane, (CF3Br known as Halon-1301), N2or Ar have been studied. The coflowing air stream is set at about 42cm/s. The inhibitor is either premixed with the fuel or introduced externally in the air stream via a circular injector positioned at the jet exit plane. The flames are videotaped and subsequently analysed.