Steam-assisted flare is one of the options for smoke suppression by adding combustion air, thus increasing momentum and turbulence in the flare flame. However, steam gas assist is only applicable if high pressure steam is available on site.

Gas exit velocities are restricted similar to that for basic pipe flare. Steam injections add potentials to dilute flare gas, even when steam is operated at minimum purge rate.

Steam is injected into the relief gas discharge at the top of flare tip and inside the flare tip barrel. A steam ring that has number of injection nozzles is installed on top of flare tip. The internal tubes are installed to act as combustion air eductors that use steam energy to pull in combustion air and to mix the air with relief gas.