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Foam Deluge Fire Suppression

Mainly used on large applications where water or gas cannot be used. These tend to be external such as transformers, oil tanks and oil storage silo’s.

A simple sprinkler open deluge type application with the heads (usually open) spread around the risk, a foam concentrate is mixed with the water to provide the typical expanding agent (the same as with extinguishers).

Will need a large amount of fabrication work to support the pipe work, valves and heads to and around the risk.


  • Good for external areas.
  • Covers large areas.
  • Protects flammables liquids – airports, aircraft hangers, oil storage.


  • Wet agent so electrical risk needs to be considered.
  • Messy – clean up required.
  • Same disadvantages as sprinklers for water and pump supplies, although because of the expanding effects of foam this sometimes means not as much water is required.


  • Machine Spaces
  • Tunnels
  • Switch rooms
  • Transportation
  • Generators (Local app)
  • Fuel Stores
  • Aircraft Hangars
  • Storage silos
  • Machines/process that are outdoors

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