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DANGER OF BACKFIRE AND FLASH

BACK OF AUX BOILER

UNBURNT HYDROCARBON GASES PRESENT INSIDE THE FURNACE OF THE BOILER HAS TO BE PURGED OUT BEFORE ATTEMPTING TO IGNITE THE BURNER.

ACCUMULATION OF HYDROCARBON GASES CAN OCCUR DUE TO FOLLOWING REASONS:

1)      FREQUENT ATTEMPTS TO IGNITE BURNER WITHOUT ASCERTAINING AND RECTIFYING CAUSES OF MISIGNITION/MISFIRE.

2)      LEAKY STOP SOLENOID V/VS.

3)      IMPROPER FUEL ATOMISATION LEADING TO IMPINGEMENT AND ACCUMULATION OF FUEL.

4)      OBSTRUCTIONS IN THE UPTAKE CAUSING THE PURGING TO BE INEFFECTIVE.

5)      MALFUNCTIONING OF THE AIR DAMPER CAUSING INSUFFICIENT AIR SUPPLY FOR PURGING.      

ANY ATTEMPT TO IGNITE THE BURNER WHEN THE FURNACE HAS HYDROCARBON GAS ACCUMULATION CAN CAUSE VIOLENT EXPLOSION, BACKFIRE AND FLASH BACK FROM THE FURNACE.  BACK FIRE CAN CAUSE SERIOUS INJURY TO OPERATING PERSONAL AND VESSEL’S EQUIPMENTS.    

STRICTLY FOLLOW THESE INSTRUCTIONS DURING BOILER OPERATION:

      ONLY QUALIFIED ENGINEERS SHOULD OPERATE THE BOILER

       IF THE IGNITION FAILS FOR 5 SECONDS, RELEASE THE MANUAL IGNITION SWITCH IMMEDIATELY, ALLOW FOR POST PURGE AND INVESTIGATE THE CAUSE OF FAILURE.

      DO NOT TRY FOR ANOTHER ATTEMPT WITHOUT CARRYING OUT POST PURGE/PRE PURGING OPERATION.

      ALWAYS STAND ON THE SIDE OF THE BURNER ASSEMBLY WHILE FIRING THE BOILER MANUALLY.

      ANY ABNORMAL ALARM DURING ‘AUTO’ OPERATION SHOULD BE RESET ONLY AFTER INVESTIGATING AND RECTIFYING THE DEFECT.

DURING MAINTENANCE, ALWAYS USE PERSONAL PROTECTIVE AIDS. (COTTON COVERALLS, GOGGLES, FACE SHIELD, FIRE PROOF HAND GLOVES).