Method
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Aim
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Means
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Remove Oxygen
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Smother the fire.
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Introduces a barrier between the fuel and the oxygen, e.g. a lid, mineral fibre blanket, foam, sand or carbon dioxide.
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Remove Heat
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Reduce the temperature of the fuel (and surroundings) to below the ignition temperature.
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Uses water, etc. Some of the heat is transferred to the water and some is used up during the conversion of water to steam.
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Remove Fuel
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Shut off the supply of flammable gases or liquids.
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Uses of valves, etc.
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There are two main types of fire extinguishing systems:
Fixed Installations, e.g. sprinkler, foam spray and gas flood systems;
Portable Extinguishers, e.g. hand held or on a wheeled trolley.
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