Hypermist Fire Fighting System

   

Hypermist Fire Fighting System

 The hyper mist or high pressure fog fire fighting system is installed for all important ship’s machinery systems in the engine room.

    • Incineration room

    • Auxillary boiler room 

    • Purifier room

    • IG generator room

    • Auxillary generator

    • Main engine cylinder head pump

    • Steering gear room

The high-pressure water mist/fog system provides water mist protection during emergencies to engine room areas and machinery spaces. This system is independent of any other fixed fire fighting system such as foam or CO2 system.

Operational procedure :

• A fresh water pump takes suction from fresh water tank to supply high-pressure water to the sprinkler system. Each area is isolated by valves, which can be opened during emergency situations involving fire. The system is kept at constant stage of readiness.

• The system start select switch on the main control panel must always be set to AUTO & MANUAL position for automatic start. (The automatic activation with the fire alarm system is possible only in this mode.)

Automatic start: water mist system will be automatically released into the protected area where fire is detected by the fire alarm system (both smoke and flame detectors), and an audible and visible alarm is activated in that protected area.

Manual start: Water mist system can be started manually from the control panel and from the local points whenever needed, independent of the fire alarm system.

•The following conditions must be maintained at all times to ensure hyper mist system is on stand by for operation:

Sufficient water level must be retained in the fresh water tank

Make sure the power supply is available .

The fire alarm system must be in operation.

Drain and test valves must be closed.

The area around the Hyper mist water pump must be clear of any obstructions.

Stopping:

After confirming extinction of a fire, the water mist system can be stopped manually by cancelling the signal from the fire alarm system and pressing the STOP button on the control panel or local point.

This fire extinguishing system has following effects:

• Cooling effect (quick cooling by evaporation latent heat)
• Oxygen replacement effect (replacement of air with water vapor generated in a large quantity, and absorption of radiation heat)
• Shut-off effect (the floating fog forming walls of water)
• Smoke eliminating effect (the floating smoke particles being adsorbed and settled by the fog)

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