To help you understand this concept you need to know how fires are classified and which fire extinguishers are suitable for each class. All metals will soften and melt at high temperature, which can be a big problem when metal joists and columns are present in a fire as structural elements. These fires are rare but more deadly than other types of fire. – Class B fires – flammable liquids: such as petrol, turpentine or paint. Some fire extinguisher types can make a fire worse or help spread it. This is used to determine the type of extinguishing agent that can be used for that fire class. The only type of fire extinguisher approved for use on cooking oils and fats is the wet chemical extinguisher. Take our fire safety elearning course and get your certificate today. Knowing fire extinguisher types is important, so you can act fast. Different fires can have different hazards and risks. A Class C fire is extinguished with a dry chemical, which does not conduct electricity. Class D. Class D fires are fires in combustible metals such as magnesium, titanium, zirconium, sodium, lithium, and potassium. For example, failing to use a C-rated extinguisher on energized electrical components may endanger Fires that originate from flammable liquids and gas can be extinguished by a class B fire extinguisher. There are 6 classes of fire which are classified by the type of fuel or material being burnt and any accelerant that may be involved. CLASSES OF FIRE, TYPES OF PORTABLE FIRE EXTINGUISHERS, INSPECTION & MAINTENANCE OF FIRE EXTINGUISHERS IN UNIVERSITY BUILDINGS 1.0 PURPOSE 1.1 To provide an overview of fire extinguisher use and maintenance. Make sure you know what flammable liquids are used in your workplace, and carry out a COSHH assessment. l GRAZING fire has a trajectory not higher than 68 inches above the ground. Fire is classified with respect to the target, the ground, and the gun. There are six classes of fire: Class A, Class B, Class C, Class D, ‘Electrical’, and Class F. –. The fire classification system is designed to categorise fires into groups based on the type of fuel involved. It could be furniture, or fixtures and fittings. The 5 Fire Classes and How to Extinguish Them. Of course, fire prevention is the best way to make sure that fire doesn't impact you or your business. Understanding fire extinguisher classes. What are fire classes? Class C: Electrical equipment, appliances and wiring in which the use or a nonconductive extinguishing agent prevents injury from electrical shock. The relevant graphics and letter designations that accompany these classes are specified by NFPA 10, the standard for portable fire extinguishers.. Type ABC: Dry chemical effective on all classes of fires Type BC: Carbon dioxide to be used on chemical or electrical fires Type K: Used in kitchens on grease fires. Extinguishing method cooling ; Class B flammable liquid, gases, greases and similar products. Classes Of Fire. Fire is fire – and it needs to be extinguished to preserve the safety of the environment. Class A - fires involving solid materials such as wood, paper or textiles. An unintentional Class A fire could result from knocking over a candle, a stray spark from a fireplace, or a lightning strike on a tree. Do not use on Class B or C fires; may cause fire spread or electrical shock. Luckily, Class A fires are the easiest type to extinguish. What Are The Classes Of Fire? Here, we have compiled the classification of fires for your information. The four classes of fire are given below. It could even be the structure of the building. The first step of any fire risk assessment is to identify fire hazards. But, as a conductor, it should never be used near electrical equipment. Many of the fluids, liquids and chemicals used in workplaces can be flammable or explosive. Extinguishing method cut off oxygen supply or prevent flammable vapor from being given off. The fire may be extinguished, but if the electricity is not turned off, the fire may rekindle. Categorising fuels in this way can help to identify the type of extinguisher required. Water can actually act as an accelerant on metal fires, so how would you tackle a class D fire? Fires are divided into six classes, according to what fuelled the fire. Class A combustible materials ; Characteristics deep seated, leave ash and embers. Specialty areas, such as the Operating Rooms and Kitchens have specific extinguishers. 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. The extinguisher works by releasing materials that stop the … Classes of fire. Knowing how to attack a fire before it grows, isn't always straightforward. Classes of Fire. Usually, Water, DCP and Foam fire extinguishers smother the Class A fire by removing the heating factor of the fire triangle. 2. While extinguishers can be used on class C gas fires, the only safe method to attack this type of fire is to shut off the gas supply. This is one of the most common types of fire because solids are the most common type of fuel and one that is hard to eliminate. To request fire extinguisher training for your department, please contact Ambulatory Safety. Not every fire is the same. Small metal fires can sometimes be smothered with dry earth or sand. Fires come in all shapes and sizes. Class A. Class B - fires involving flammable liquids such as petrol, diesel or oils. Grazing fire can exist for 750 yards over level or uniformly sloping ground. Class B: Flammable liquids such as alcohol, ether, oil, gasoline and grease, which are best extinguished by smothering. – Class A fires – combustible materials: caused by flammable solids, such as wood, paper, and fabric. We’ll discuss the various kinds of fires that pop up and how to precisely put them out. Never leave food or frying equipment unattended during use. Keep stored gases in sealed containers in a safe storage area, and ensure that gas work is carried out by competent persons. Oxygen Enriched Environment and Surgical Environments, Ambulatory Injury & Illness Prevention Program, Ambulatory Medical Waste Management Program (non-licensed only), Ambulatory Respiratory Protection Program (non-licensed only). Should a class B fire ignite, foam or powder extinguishers are the best types of extinguishers to attack this type of fire. Extinguishers are labeled to correspond to the classes of fires they are designed to fight. A fire class is a system of categorising fire with regard to the type of material and fuel for combustion. types of fire extinguishers and when to use them. Class A is the most common type of fire encountered by firefighters and may involve clothing, rubbish bins or a pallet of cardboard. The National Fire Protection Association (NFPA) categorizes fires by class. Class Alpha materials include wood, paper, cloth, rubber and most plastic. To ensure that your home or business is well protected, it is recommended to buy fire extinguishers and other types of suitable fire safety equipment. Fire is a major risk for any business. The only type of fire extinguisher you should use on a class A fire is the water extinguisher. You can find out more about the types of fire extinguishers and when to use them, or carry out a fire risk assessment for your business. For small class F fires, you could also use a fire blanket. Fire can be devastating. Singapore Civil Defence Force (SCDF) uses a certain classification for the Classes of Fire that can break out in homes and commercial buildings. Remove the power and the Class C fire becomes one of the other classes of fire. Works For: Class A, B and C fires (multi-purpose); Class B and C (ordinary) Wet Chemical Metals are not often thought of as a combustible material, some types of metal can be, like sodium. Classes of Fires. Fire classes are used to classify all flammable substances and have a decisive influence on the choice of the right extinguishing agent in firefighting. The wrong extinguisher actually may make a fire emergency worse. In general fires involving solid materials, usually of an organic nature, in which combustion normally takes place with the formation of glowing embers. The classes of fire. B Class of Fire: Fire in Flammable Liquids Flammable liquids have an extremely low ignition point and set ablaze at the slightest trigger. The powder inside the extinguisher may vary depending on the type of metal risk it is designed for. The most effective extinguishing agents for Class Alpha fires are water, foam and dry chemical. Extinguishers are an important part of your fire protection measures. Class A: Wood, Paper & Plastic. Fires are classified by the types of materials that are burning. Like carbon dioxide, and dry powder in low voltage situations. Fire extinguishers - Usually mounted on the wall near exits. Class D: Certain flammable metallic substances such as sodium and potassium. Each fire class is represented by a letter of the alphabet (with the exception of electrical which are simply referred to as "electrical fires") and an icon. Skilled experts know, due to the fire class, which extinguishing agent to use. If you know the fire triangle, then it will be no surprise that fire hazards come into three categories: ignition, fuel and oxygen. There are a lot of variables that determine how a fire starts, grows, and is put out. In these situations, doors should be closed to contain the fire. There are dry powder extinguishers developed to tackle metal fires. This could be natural gas, LPG or other types of gases forming a flammable or explosive atmosphere. She is NEBOSH qualified and Tech IOSH. Class B: Flammable liquids such as alcohol, ether, oil, gasoline and grease, which are best extinguished by smothering. However, fires in live electrical equipment are an additional hazard. Class A extinguishers will put out fires in ordinary combustibles such as wood and paper; If the detector rings its' alarm, follow the fire protection rules of your school or workplace or leave your house This is the type of extinguisher you’ll want to use on a fire caused by oil or fuel. You don't want to be using water, or any other conductor as that could be fatal. important consideration for a roofing contractor. The classes of fire. All fire extinguishers are labeled, using standard symbols, for the classes of fires on which they can be used. Class C fire extinguishers. There are 6 different types of fire, and each should be attacked in a different way. Fire is typically thought of as being orange or red, but it can be other colors too. A red slash through any of the symbols tells you the extinguisher cannot be used on that class of fire. (Class C fires deal with electrical Current.) Such fires are extremely volatile. It is a chemical reaction involving fuel, Class A Fires. This is essentially the common accidental fire encountered across several different industries. Trash fires are one such example. Fire extinguishers need to be maintained. Use the wrong type of fire extinguisher could do more harm than good. This classification of fire is done based on the combustible material that can possibly catch fire, accordingly the … While you shouldn't use water to attack an electrical fire, you can use other types of fire extinguishers. The Fire Equipment Manufacturer's Association recommended using a water or foam fire extinguisher on Class A fires. Let's find out about the common types and colours you might need to use. Different fires can have different hazards and risks. Did you know, however, that there are at least five different types of fires? Class B fires are fires involving liquids. This is the most popular type of extinguisher because it can handle most fires involving solids. This is not strictly a class (class E) of fire, because electricity is more or a source of ignition than a fuel. Fire extinguishers should tell you what type they are, and what class of fire you can use them on. Use a fire extinguisher only if you have received "hands-on" training. The best type of extinguisher to put out the fire only the supply of gas is cut off, is a dry powder extinguisher. BS 7937:2000 The Specification of the Portable Fire Extinguishers for Use on the Cooking Oil Fires introduced the new class F. The categories or classes based on the fuel and the means of the extinguishing are as follows: The wrong type of extinguisher could cause electrical shock, explosion, or spread the fire. Classes of Fires and Extinguishers Not all fires are the same. There are four classes of fires: Class A: Ordinary solid combustibles such as paper, wood, cloth and some plastics. Interrupting business activities. According to statistics, in 2010/11 flammable liquids accounted for only 2% of fires, but a massive 21% of fatalities. Selecting the appropriate fire extinguisher is an . Burning, injuring and even killing people. instances, the fire will go out. B Class fire can be extinguished by Dry Powder, CO2 and Foam based fire extinguishers and special powder for B class fire (called B+ or Monnex) is adept in handling such fires. The fuel burning dictates the type of extinguisher you use to fight the fire. Good housekeeping should help to keep materials like packaging and waste reduced, minimising risks. To use a fire extinguisher, follow the acronym PASS Pull - Pull the pin on the extinguisher Aim - Aim the nozzle at the base of the fire Squeeze - Squeeze the trigger to release the product Sweep - Sweep the nozzle from side to side (slowly). After all it is not the electricity burning but surrounding material that has been set alight by the electric current. Portable extinguishers are useful for putting out small fires; however they are not effective against large, spreading fires. Class C fire extinguishers are effective against electrical fires from live wires, panels, and circuit breakers. There are six classes of fire: Class A, Class B, Class C, Class D, ‘Electrical’, and Class F. – Class A fires – combustible materials: caused by flammable solids, such as wood, paper, and fabric – Class B fires – flammable liquids: … Fires in ordinary combustible materials such as wood, cloth, paper, rubber and many plastics are classified under this. Emma has over 10 years experience in health and safety and BSc (Hons) Construction Management. Fire extinguishers are designed to tackle specific types of fire. These types are fires use commonly flammable material as their fuel source. There are four classes of fires: Class A: Ordinary solid combustibles such as paper, wood, cloth and some plastics. Today's most widely used type of fire extinguisher is the multipurpose dry chemical that is effective on Class A, B, and C fires. Smoke detector (also called a smoke alarm) - Smoke in a room will start an alarm. This has forward effects on the sort of concealment or stifling materials that can be used. So how can you protect yourself? ... Fire with respect to the ground can be classified as grazing, plunging, or overhead. Wood, fabric, paper, trash ,and plastics are common sources of Class A fires. Classification of fire. 2.0 DEFINITIONS 2.1 Fire: Fire is the rapid oxidation of any combustible material. Locations ABC fire extinguishers are located throughout the Medical Centers in corridors. Using a water or foam fire extinguisher will be just the thing to put it out. Deep fat frying and spillages of flammable oils near to heat sources in kitchens can result in a class F fire. Don’t use water. Types of flame color can come from the material that is being burned. There are six different classes of fire and several different types of fire extinguishers. Type A: Pressurized water to be used on Class A fire only. Making sure electrical equipment and installations are installed correctly, and inspected and maintained, will help to reduce the risk of this type of fire. CLASSES OF FIRE. Class A fires are fires involving solids. This type of fuel could be paper and cardboard, common in offices and manufacturing. If a fire starts, it can spread quickly. Fire Extinguisher Classes. different classes of fire. Not every fire is the same. Read Post Spend less time on paperwork. These materials are normally not found in the Medical Center. Class B – fires involving flammable liquids such as petrol, diesel or oils. There is a relationship between flame temperature and color and a flame color temperature chart can … Each fire extinguisher type needs to meet NZS4503:2005. Fire hazards in your workplace are anything that may create a fire. This about safe storage and use of these substances, keep them in labelled containers and away from sources of ignition. This article was written by Emma at HASpod. These classes of fires require specific handling to squash the flames. Damaging buildings and equipment. Electrical fires are not given their own full class, as they can fall into any of the classifications. Title: CLASSES OF FIRE 1 CLASSES OF FIRE. Characteristic surface burning. If you know the fire triangle, then it will be no surprise that fire hazards come into three categories: ignition, fuel and oxygen. COSHH assessments are a legal requirement, for any hazardous substances. If a fire does start, it can spread quickly. Always turn off the power supply if you can. But you should always have a plan in place for dealing with fires if they do happen. There are 6 different classes of fire, and each should be attacked in a different way. If you use the wrong type of fire extinguisher on a fire, you can, in fact, make matters worse. Work with gas is dangerous, and increases fire risk. Class A – fires involving carbon-based materials such as paper, wood or textiles. Dry Chemical fire extinguishers extinguish the fire primarily by interrupting the chemical reaction of the fire triangle. CDM guides, tools and packs for your projects. In an emergency, do you have the time to check? If that fire gets out of control, or a Class A fire breaks out without your guidance, you’ll need to handle it quickly. Fire is more complex than people realise because not all fires are alike. And while having them in place is a great start, they need to be checked, serviced and inspected regularly to keep them ready for action. Classes of fire or Fire class is a term used to indicate the kind of fire, in connection to the burning materials which have (or could be) lighted/ignited. This extinguisher removes the chemical reaction of a fire, and is the most used of all fire extinguishers because of its versatility across multiple classes. These fires are ones that can be handled with water. Using the wrong type of fire extinguisher could do more harm than good. The chemical is a very fine powder that smothers the fire when applied. There are five main portable marine fire extinguisher classes: Class A: These types of fire extinguishers are used in fires which are a result of the burning of wood, glass fibre, upholstery, and furnishing. Class C fires are fires involving gases. There are four classes of fire extinguishers – A, B, C and D – and each class can put out a different type of fire. Class K. Class K fires are fires in cooking oils and greases such as … Like cleaning fluids, solvents, fuels, inks, adhesives and paints. Metals are also good conductors, helping a fire spread. Water will remove oxygen and the heat source to the fire, stopping it in its tracks. The destruction it can cause and the loss of life is immeasurable. Class Alpha fires involve common combustible materials that produce an ash. 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