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Fire Extinguisher types and usage

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    Shown below are the different types of portable fire extinguisher, including their colour coding and use, which are in existence. All new certified fire extinguishers are now coloured red. The new red extinguishers will have a coloured panel on or above the operating instructions label. These panels will use the familiar colour scheme to indicate contents and will not cover more than 5% of the extinguisher body. Selection Chart Extinguisher Type Class of fire Water Foam Powder Co 2 Paper, Wood, Textile, Fabric Flammable Liquids Flammable Gases Electrical Equipment Transport, Domestic eg boats, cars, caravans, the home. Fire Fighting Equipment    Powder (Blue Panel) Powder extinguishers are suitable for use on Class A, B and also Class C type fires involving flammable gases such as propane and butane. Powder is also highly effective for electrical hazards. The multi-purpose powder interferes with the combustion process and provides rapid-fir knock down. Carbon Dioxide (Black Panel) Carbon dioxide extinguishers are suitable for fires involving flammable liquids and electrical hazards. The non-corrosive and non-conductive qualities of CO2 make it an ideal choice for dealing with fires involving electrical equipment and machinery.    Water (Red Panel) Water extinguishers are suitable for Class A type fires involving combustible materials such as wood, paper and textiles. Water is a fast and efficient means of extinguishing these materials. It works by having a rapid cooling effect, so that insufficient heat remains to sustain burning and continuous ignition ceases. Foam Spray Foam spray extinguishers, (AFFF – Aqueous Film Forming Foam), are ideal for multi-risk situations where both Class A combustible materials and Class B flammable liquid risks are likely to be found, or where Class B risks present a direct hazard. Foam spray extinguishers are especially suitable for Class B fires involving flammable liquids such as oils, spirits, greases, fats and certain plastics. The blanketing effect of foam spray gives rapid flame knock down which smothers the flame and thus prevents re-ignition of flammable vapours by sealing the surface of the solution.
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