They are usually ineffective on Class A fires.Ī CO2 extinguisher is identified by its all red cylinder and black band that runs around the top of the tank.įoam fire extinguishers work by forming a layer over the top of the burning substance which stops the fire by cutting off access to oxygen. It is important to use the correct extinguisher for the type of fuel! Using the incorrect agent can allow the fire to re-ignite after apparently being extinguished successfully.Ĭarbon Dioxide fire extinguishers extinguish fire by taking away the oxygen element of the fire triangle and also be removing the heat with a very cold discharge.ĬO2 fire extinguishers contain a non-conductive and non-corrosive extinguishing agent therefore will cause no damage to electrical equipment which make it perfect for areas such as electrical switch rooms, server/data rooms, electrical machinery and offices.Ĭarbon dioxide can be used on Class B & E fires. This agent also works by creating a barrier between the oxygen element and the fuel element on Class A fires.Ī dry chemical fire extinguisher is identified by its all red cylinder and white band that runs around the top of the tank.īE dry chemical is for Class B & E fires only. They contain a chemical powder called monoammonium phosphate which extinguishes the fire when it spreads and melts over the flames. They are effective on Class A, B, and E fires. > read more Dry Chemical Powder Extinguisherĭry Chemical Powder fire extinguishers extinguish the fire primarily by interrupting the chemical reaction of the fire triangle. The discharge stream could spread the flammable liquid in a Class B fire or could create a shock hazard on a Class C fire.Ī Water extinguisher is identified by its all red cylinder and red band that runs around the top of the tank. Water Fire extinguishers are for Class A fires only - they should not be used on Class B or C fires. This coloured band tells us what type of fire extinguisher it is therefore allowing us to recognise which fire to use it for. – Class F fires – cooking oils: typically a chip-pan fireĪn easy way to determine which fire extinguisher to use is by the different coloured bands on the top of each cylinder. – Class E fires – electrical equipment: once the electrical item is removed, the fire changes class – Class D fires – combustible metals: chemicals such as magnesium, aluminum or potassium – Class C fires – flammable gases: like LPG, hydrogen, butane or methane – Class B fires – flammable liquids: such as petrol, turpentine or paint – Class A fires – combustible materials: caused by flammable solids, such as wood, paper, and fabric There are six classes of fire: Class A, Class B, Class C, Class D, Class E, and Class F. We then provide a detailed explanation of each type of fire extinguisher below. There is no one extinguisher type which works on all classes of fire.īelow is a summary of the classes of fire, and a quick reference chart showing which types of extinguisher should be used on each. Whilst there are 5 main types of fire extinguisher, there are different versions of Dry Powder Chemical extinguishers The types of fire extinguisher are: You will also need to make sure that you have the right size and weight of fire extinguisher as well as the right kind. The fire risk from the different classes of fire in your home or your business premises will determine which fire extinguisher types you need. The various types of fire extinguisher put out fires started with different types of fuel – these are called ‘classes’ of fire. You should have the right types of fire extinguisher for your house or business premises, or you may not meet current regulations. There are 5 main fire extinguisher types in Australia – Water, Foam, Dry Powder, CO2 and Wet Chemical.
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