Codes and standards

Watermist standards


Fire test standards are used to determine system scope, specific design data, and system limitations.

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Fire tests and component tests

The different standards provide requirements for the design installation, testing and commissioning of watermist systems.

Fire test standards are used to determine the nozzle/system scope, specific design data, and the system limitations or the uniqueness of each system.
Examples of such data:

• Nozzle type (pendent, upright, sidewall, etc.)
• Nozzle spacing, pressure, flow rate, or K-factor
• Ventilation, obstruction requirements, or structural limitations
• Maximum fire loads, ceiling height, volumes, openings, etc.

Examples of fire test standards:

• FM5560: Residential, LH, OH1, Machinery, Turbines, Industrial Fryers
• UL2167: Residential, LH, OH1, OH2, Maritime applications
• VDS: Residential, LH, OH1, Car parks, Cable Tunnels, Shopping Areas
• EN14972:2020 – Annex A: Offices, Cable Tunnels, Fat Fryers, Special
• IMO 1165 + 1387: Machinery Spaces
• IMO MSC 265: Accommodation
• IMO 1430 / 1272: Car and Truck decks
• ISO 15371: Commercial fat

Component test standards are used to determine the robustness and reliability of the system components. These lifetime tests determine whether a component is designed to be able to withstand many years in actual installations or not. Most watermist system components are tested and approved “case by case” since they can be very system specific.

Examples of component test standards:

• FM5560 (covers all watermist system components)
• UL2167 (covers watermist nozzles)
• EN14972:2020 (covers all watermist system components)
• IMO A800 + MSC 265 (covers automatic watermist nozzles)
• IMO 1165 (covers open watermist nozzles)
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