By understanding what each fire class means, you can understand which fire types are a safety hazard at your business. Being able to immediately distinguish which extinguisher you need in an emergency apart could make a lifesaving difference. They will state below the rectangle whether they are M28 or L2. The chemicals contained within the canister dispels the flames, cools the burning oil, and produces a soap-like solution that seals the surface and prevents re-ignition of the fire. Examples of such combustible metals include titanium, magnesium, aluminum, and potassium. Warning: Although they are not currently classified as suitable for fighting class B (liquids) and C (gases) fires, dry water mist extinguishers have been identified by fireservice.co.uk as effective against them. Fire extinguishers are an important addition to fire safety measures, as they can help to stop small fires. These types of extinguishers work by cutting off a fire's oxygen supply. There are different chemicals used in these types of fire extinguishers. Wet chemical fire extinguishers have become popular in putting out these types of fires. The information throughout this article has provided some key guidance on the different types of extinguishers and their uses, but keep in mind that you also need practical training to learn how to safely handle extinguishers. 5 Types of Fire Extinguishers. ABC dry powder is also acceptable to use on flammable gases. an overloaded surge protector or bad wiring) and should be taken seriously. This prevents the fire from spreading to other flammable materials and smothers the fire to prevent oxygen from reacting with the metal again. The correct one must be used for the right class of fire, otherwise they may prove ineffective or in fact worsen the situation. Fumes from CO2 extinguishers can asphyxiate if used in confined spaces: ventilate the area as soon as the fire has been controlled. Liz has been writing for the Hub since 2014 and specialises in writing about technical topics in a style anyone can understand. M. Lopez-June 9, 2020. Foam extinguishers are identifiable by the word ‘foam’ printed within a cream rectangle on their bodies. You must be able to use the extinguisher in the correct manner and should be trained before attempting to put out fires. Types of fire extinguishers and their uses. Flammable gases such as butane or propane are also common fuel sources in Class B fires. The need for different types of fire extinguisher arises from the different types of fuel that may start a fire. This could cause the fire to be pushed and spread to surrounding areas. There are 5 main fire extinguisher types – Water, Foam, Dry Powder, CO2 and Wet Chemical. M28 and L2 are unique extinguishers in that they are designed for tackling Class D fires – those involving combustible metals including swarf or powder, which are often produced in engineering factories. The wrong type of extinguisher could cause electrical shock, explosion, or spread the fire. Diagram from Surrey Fire (https://surreyfire.co.uk/) Water Based Fire Extinguishers. Each type of fire extinguisher contains different materials that make them suitable for fighting certain types of fires, and is designed to safely and effectively discharge its contents. The various types of fire extinguisher put out fires started with different types of fuel – these are called ‘classes’ of fire. Fire extinguishers are an integral part of the fire safety … They also discharge gently, stopping the burning oils and fats from being pushed and splashing to surrounding areas or even the user. In order to meet the current regulations, it is important for you to have the exact type of fire extinguisher that is needed for your premises. Different Types of Fire Extinguisher. The five most commonly used fire extinguishers are water, foam, powder, the carbon dioxide, and the wet chemical.There are also more specialized fire extinguishers including the Halon, clean agent extinguishers FE-36 and the powder fire extinguishers such as the class D fire extinguishers for metal fire … Combustible materials include paper, wood, cardboard, plastics, and fabric. There 5 different type of fire extinguishers - not including fire blankets. These types of fire extinguishers are identifiable by the words ‘wet chemical’ printed across a yellow rectangle. Fire extinguisher ratings are based on the five classes of fires. However, they do not effectively penetrate the spaces in equipment easily, so the fire could still re-ignite. To extinguish a Class D fire, use a dry powder agent. Dry Powder extinguishers can be used on most fire types including electrical devices. It smothers the flames and seals vapours so that re-ignition cannot occur. Let’s take a look! They also leave residue behind that is difficult to clean up and causes damage to soft furnishings, carpets, and electrical equipment. However, electrical fires can occur on smaller scales in all businesses (i.e. This type of fire might be started by old wiring in walls, frayed electrical cords, worn-out breaker boxes, or faulty appliances. Powder extinguishers work to coat the fuel source and smother the fire. Aim at the base of the fire, not the flames. These types of extinguishers can be identified by the text ‘carbon dioxide’ or ‘CO2‘ printed in white on a black rectangle. Today's most widely used type of fire extinguisher is the multipurpose dry chemical that is effective on Class A, B, and C fires. Note that there are also other metals with combustive properties you may encounter. Class K fires are naturally of concern in the food service and restaurant industry. 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