Where are Water Mist Systems to be used?

The Factory Mutual Approval Guide lists seven categories for the approval of Water Mist Systems. These seven categories currently are:

  • Protection of Combustion Turbines, Machinery Spaces, Special Hazard Machinery Space and Flammable Liquid Processing Hazards in Enclosures with Volumes Not Exceeding 9175 ft3 (260 m3).
  • Protection of Combustion Turbines, Machinery Spaces, Special Hazard Machinery Spaces and Flammable Liquid Processing Hazards in Enclosures with Volumes Exceeding 9175 ft3 (260 m3).
  • Protection of Industrial Oil Cookers.
  • Protection of Light Hazard Occupancies.
  • Protection of Wet Benches and Other Processing Equipment.
  • Protection of Computer Room Sub-floors.
  • For Local Application Protection.