A special hazard fire suppression system is typically used in areas where the facilities or assets need to be preserved or water damage would be costly.

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There are three types of systems which include:

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Water mist systems -  water mist is a water spray for which 99% of the total volume of liquid is distributed in micro droplets. Water mist attacks a fire by cooling the fire, suffocating the fire, blowing out the fire and wetting the fire. Damages resulting from discharge are minimized owing to the relatively small amount of water employed.
         
Typical applications include:

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• Machinery spaces (generators / transformers / turbines)

• Ordinary hazard (offices / storage areas / meeting rooms / hotels / schools / heritage / car parks)

• Tunnels (road / rail / cable)

• Marine (machinery spaces / bulge protection / accommodation)

Foam systems - A foam fire suppression system is a type of wet sprinkler system that combines both water and a foaming agent for large scale fire extinguishment. The foam attacks fire by blanketing the fuel source from flammable vapours and oxygen and by cooling its surface leading to suppression of the combustion.

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Typical applications include:

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• Aircraft hangers

• Warehouses

• Marine applications

• Processing areas

• Flammable liquid storage

• Refuelling stations

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Gaseous suppression systems - Gaseous Fire Suppression work in one of two ways, the first is to inert the atmosphere reducing oxygen levels to a level that will no longer sustain combustion, the second is to react chemically with the fire absorbing heat and causing the chain reaction of combustion to break down.

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Typical applications include:

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• Computer server rooms        

• Data processing and storage centres

• Switch rooms

• Critical electronic infrastructure

• Art galleries and museums