What is Boiler blow back? Action

     Blowback from boiler furnace is a very dangerous situation where the hydrocarbon mixture in the furnace catches fire which may lead explosion

It occurs when lighting up with explosive gas and oil droplets ( oil residue) inside the furnace without preparing sufficiently. The ignition results in a large flue gas inside the furnace and these gases blow out with high pressure through the furnace openings. 

Action in case of Blowback

> Stop boiler start purging

> Open the burner door and check for fuel accumulation within the furnace to check nozzle tripping

> Check the condition of no nozzle

> If all checks are satisfactory shut the burner door

> Start the burner sequence with pre purging

> If the burner backfires, do the troubleshooting before starting the boiler again.

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