Control of furnace and flare operation. Flame failure alarm

Of the many fire and explosion hazards in refineries, the reheating furnace s occupy a special position. Explosions in furnaces have serious consequenc es. The most frequent cause is flameout due to unstable burning or feeding of fuel to a furnace where ignition has not taken place. This usually happe ns in starting up and stopping a furnace or in operating on small loads.