There are three types of powder extinguisher: ABC powder, M28 powder, and L2 powder. The short answer is that is depends upon the type of fire you are dealing with, or to put it more correctly the class of fire. Fire extinguishers are classified as types A, ABC, BC or K. It is important to use the right type of extinguisher on the specific class of fire to avoid personal injury or damage to property. This is why it’s advised you use a different type of extinguisher for workplaces with electronics, such as an office with computers. There are 5 main fire extinguisher types – Water, Foam, Dry Powder, CO2 and Wet Chemical. Fire extinguisher ratings are based on the five classes of fires. There are different chemicals used in these types of fire extinguishers. Aim at the base of the fire, not the flames. They also discharge gently, stopping the burning oils and fats from being pushed and splashing to surrounding areas or even the user. Phone: 540 636-4444, TOLL FREE Fax: 800 822-5001 Liz has written a variety of articles, ranging from fire safety, through food hygiene and anti-bribery, to dignity in care. The strong jet from the extinguisher would push the burning oils or fats and spread the fire to surrounding areas. Water extinguishers are used for Class A fires only. Wet chemical extinguishers are designed for combating fires that involve class F fires. Carbon dioxide extinguishers are used for combating class B and electrical fires – they suffocate the fire by displacing oxygen in the air. What are the classes of Fire. You should have the right types of fire extinguisher for your premises. Most modern fire extinguishers are developed to deal with many different fire scenarios. Warning: wet chemical extinguishers are usually not recommended for class B fires – those involving liquids. Wood, fabric, paper, trash ,and plastics are common sources of Class A fires. Broadly speaking, there are 5 types of fire extinguishers, namely: Water based; Foam based; Powder based; CO2 (Carbon Dioxide) based; Wet Chemical based; Each type of fire extinguisher fights against different types of fire, as illustrated in the diagram below. 1330 Progress Drive This type of fire might be started by old wiring in walls, frayed electrical cords, worn-out breaker boxes, or faulty appliances. 0. However, when used against class B fires – those with flammable liquids – they should not be sprayed directly into the liquid. It also has an extended hose that you can hold and point, which is useful when fighting fires on a kitchen top. One question we are often asked during fire safety training is “What are the different types of fire extinguishers used for?” In this article, we answer this question and also explain what the different classes of fire are. That is why they have been classified in 6 different categories: We have a range of completely online courses, whether that is Fire Safety Training for general awareness, specific training if you work in a school or care home, Fire Warden Training for individuals in your business, or Fire Extinguisher Training to supplement your Fire Warden Training and practical extinguisher training. The fire … For example, using a water extinguisher on an electrical fire or a carbon dioxide one on a burning oil fire is extremely dangerous. Warning: do not use on domestic chip or fat pan fires (class F). Although there are many different types of fire extinguishers, all of them operate in a similar manner. You must be able to use the extinguisher in the correct manner and should be trained before attempting to put out fires. The powder acts as a thermal blast that cools the flames so burning cannot continue. There are 5 kinds of fire extinguishers. A large part of safety is being prepared for accidents and emergencies such as a fire. Being able to immediately distinguish which extinguisher you need in an emergency apart could make a lifesaving difference. Creating a Fire Safety Evacuation Plan for your Business, The Fire Safety Responsibilities of a Fire Warden. Wet Chemical Extinguishers. Fire extinguishers are available in different types with each one having specific fire classes that they are suitable for use on. The fire extinguishers in New Zealand are a little different from the ones you find in other countries. Fire extinguishers are no different. Fire extinguishers meeting BS EN3 should have a red body (RAL 3000) and an agent specific colour band covering between 5-10% of the surface relating to the extinguisher's contents. Depending on their size, some may not come with a flexible hose, such as smaller foam or aqua water spray extinguishers. Throughout this article, we will explain the different classes of fires, the symbols that identify these, and the different types of extinguishers and their uses. These types of fire extinguishers will be solid red and will have the words ‘water mist’ printed within a white rectangle. They also leave residue behind that is difficult to clean up and causes damage to soft furnishings, carpets, and electrical equipment. Electrical fires are very common in both homes and industrial settings. By being aware of the five classes of fires, you can be sure that you are purchasing safety equipment that will be effective should an accident or emergency occur. Mental Health Myths vs Facts: What are the Realities? By understanding what each fire class means, you can understand which fire types are a safety hazard at your business. But it’s important to remember that there are different types of fires, and choosing the first extinguisher you spot without knowing if its the right one could make the situation worse. Today's most widely used type of fire extinguisher is the multipurpose dry chemical that is effective on Class A, B, and C fires. The best method of application is to spray in slow circular motions. They remove either the air, fuel or heat (or all) component in the fire. Several types of fire extinguishers are available to fight different types of fires. Common liquid based fuel sources include petroleum based oils and paints, kerosene, and gasoline. Fire extinguishers are an integral part of the fire safety … The various types of fire extinguisher put out fires started with different types of fuel – these are called ‘classes’ of fire. The chemicals remove the water’s natural surface tension so that it soaks into burning materials more effectively when used. There 5 different type of fire extinguishers - not including fire blankets. Types of Portable Fire Extinguisher. Types of Fire Extinguishers Class A. ABC dry powder is also acceptable to use on flammable gases. Due to their non-conductive nature, they are also suitable for fighting electrical fires. Paper and wood are examples. The common fire extinguisher is one of the most well known and widely used safety tools. By. 97. a) Class A Fires. Water extinguishers can sometimes contain chemical additives that improve their effectiveness by up to 300%. As their name suggests, these are designed to combat class A, B, and C fires – those involving solids, liquids, and gases. It’s easy to differentiate between different types of fire extinguishers NZ thanks to … Fax: 540 636-4455. For each class of fire, the fuel, heat source and chain reaction varies, which is why there must be different types of fire extinguishers depending on the class of fire. Let’s take a look at each type of fire extinguisher, their uses, and their risks below. These types of extinguishers can be identified by the text ‘carbon dioxide’ or ‘CO2‘ printed in white on a black rectangle. First of all, you need to know that fire comes in a variety of different forms. Water extinguishers are only suitable for class A fires, which means they can fight fires that involve wood, cardboard, paper, plastics, fabric and textiles, and other solid materials. Although it is not recognised as a separate class of fire in Europe, electrical fires that involve live equipment and electrical sources are also a type you should bear in mind (think of it as an informal Class E; ‘E’ for electric to help you remember). Every fire extinguisher is rated for the types of fires it’s effective in putting out. The Class B fire is defined as one that uses a flammable liquid or gas as its fuel base. Corporate Office Below are details on the various classes of fire. The need for different types of fire extinguisher arises from the different types of fuel that may start a fire. 5. They are your classic model: they dispense water at a high pressure to extinguish flames. Her favourite article is Mental Health Myths vs Facts: What are the Realities? Dry water mist extinguishers are unique in that they can combat almost all types of fires, including class F fires that are usually difficult to attack. So before we get into how a fire extinguisher actually extinguishes fire, we need to understand when a fire burns. To ensure you’re adequately protected, and you meet current fire safety regulations, you need to have the right types of fire extinguisher for your business premises. Combustible materials include paper, wood, cardboard, plastics, and fabric. Each extinguisher is suitable for fighting certain types, and it’s important for you to know the differences if its your job to fight fires at work. There are a range of different fire extinguishing agents that are designed to smother different classes of fire. Types of fire extinguishers and their suitability. In addition, it may be that the presence of a fire extinguisher is made compulsory by the insurance company or any national compliance authority or body. These types of fire extinguishers are identifiable by the words ‘wet chemical’ printed across a yellow rectangle. If one or more of these things are absent, a fire will not start. Do you have the right fire extinguishers for your unique risks? However, they do not effectively penetrate the spaces in equipment easily, so the fire could still re-ignite. Electrical fires are often fueled by motors, appliances, and electronic transformers. A fire extinguisher can certainly be a life-saving device in specific circumstances, yet did you understand there are various kinds of fire extinguishers for various kinds of fires? Diagram from Surrey Fire (https://surreyfire.co.uk/) Water Based Fire Extinguishers. The extinguisher has a low velocity applicator to ensure that the M28 or L2 powder is applied gently and efficiently to burning metal and to prevent the swarf from spreading. Furthermore: you must not hold the horn, base, or pipework on a C02 extinguisher while operating it. Class… The Class C fire is defined as a fire that uses electrical components and/or energized equipment as its fuel source. That means the fire extinguishers removes 1+ of these criteria. Class D fires are a danger in laboratory environments. Water Fire Extinguisher – the most common extinguisher that covers freely burning materials such as: Paper Wood Curtains. Also bear in mind that while carbon dioxide is effective at smothering fires, once the gas has floated away, the fire may reignite if the source has not been removed. Once you are aware of what types of fires your business may encounter, you can buy the proper extinguisher for protecting against them. FIRE EXTINGUISHERS. Class A fires are defined as ordinary combustibles. 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 … They are primarily water based but contain a foaming agent, which has rapid flame knock-down and a blanketing effect. : Pull the Pin at the top of the extinguisher. Fire Hoses. It also has an extended hose that you can hold and point, which is useful when fighting fires on a kitchen top. The pin releases a locking mechanism and will allow you to discharge the extinguisher. These types are fires use commonly flammable material as their fuel source. When you run a business, you are responsible for the safety of your employees and guests. There are several different classifications of fires based primarily on the fuel source. When confronted with such a fire, common extinguishing agents such as water are ineffective and can be hazardous. When buying fire extinguishers for your business, it’s important to buy the right type of fire extinguisher for your needs. There are a variety of the fire extinguishers you can utilize to enhance your fire safety. They also have a distinct type of hose. This could cause the fire to be pushed and spread to surrounding areas. They are also effective for fire-fighting because they form a safety barrier between the user and the fire – which repels some of the heat – and do not leave hard-to-clean residue behind. These types of extinguishers will say ‘powder’ in white text over a blue rectangle, and underneath the rectangle will be written ‘ABC powder’. Three things need to be present: air (oxygen gas), fuel, and heat. Class B -- flammable liquids, such as gasoline. Dry Powder extinguishers can be used on most fire types including electrical devices. Warning: these should not be used on any other fire classes, especially electrical fires or chip or fat pan fires. There are five main types of fire extinguishers: Each type is easily identifiable by their names, colours, and sometimes their hoses. The first category consists of fires caused by combustible materials such as flammable solids like wood, fabric, and paper. Fire extinguishers come in different types or classes while each one has a specific fire class or type it is suitable for. The extinguisher’s nozzle converts water into ‘dry’ microscopic particles, which are then drawn into the fire and simultaneously cool and suffocate it to extinguish the flames. To extinguish a Class D fire, use a dry powder agent. Class A fires are commonly put out with water or monoammonium phosphate. To extinguish such fires you cut the power off and use non-conductive chemicals to extinguish the fire. Liz has been writing for the Hub since 2014 and specialises in writing about technical topics in a style anyone can understand. Fire extinguishers can be filled with powder, water additive, foam, or carbon dioxide. A Class K fire is defined as a cooking fire involving combustion from liquids used in food preparation. an overloaded surge protector or bad wiring) and should be taken seriously. Class B fires are a common hazard in industries dealing with fuels, lubricants, and certain types of paint. There are different types of fire extinguishers because there are various types of fires. Electrical fires are common in industries that deal with energy or make use of heavy electrically-powered equipment. You may believe that you are prepared if you have a fire extinguisher on site, but you may not be as prepared as you think. 5 Types of Fire Extinguishers. Fire Safety – What Are the Five Types of Fire Extinguishers? Warning: do not use water extinguishers on burning fat and oil fires and electrical appliances. Smothering these types of fires to remove oxygen is a common solution as are chemical reactions that produce similar effects. This absorbs the heat the fire requires to burn and smothers it as well. Before attempting to operate any fire extinguisher, know which type of extinguisher to use. 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. TYPES OF FIRE EXTINGUISHERS AND THEIR USES . Dry Powder extinguishers are also known as ABC extinguishers because they can be used on fire types A, B and C. 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