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Fire is divided into five classes (A, B, C, D, and K) that are primarily based on the fuel that is burning. This classification system helps to assess hazards and determine the most effective type of extinguishing agent.
What are the 6 classes of fire?
Fires are classified in six groups A, B, C, D, F and electrical: Class A fires – are fires involving organic solids like paper, wood, etc. Class B fires – are fires involving flammable liquids. Class C fires – are fires involving flammable gasses. Class D fires – are fires involving burning metals (eg aluminium swarf).
What are the 4 different classes of fires?
Classes of fire Class A. A class A fire is burning flammable solids as fuel. Class B. Class B fires are burning flammable liquids. Class C. Class C fires burn flammable gases. Class D. Class D fires are burning flammable metals. Electrical. Any fire involving electrical equipment is classed as an electrical fire. Class F.
What are the 3 main classifications of fires?
Class A – Fires involving ordinary combustibles such as paper, wood, cloth, rubber, or plastics. Class B – Fires involving flammable liquids, gases, oil, paints, or lacquer. Class C – Fires involving energized (live) electrical equipment such as motors, appliances, or power tools.
What are the 5 classes of fire extinguishers?
5 Types of Fire Extinguishers Class A Fire Extinguishers. Class A fire extinguishers are safe for use on ordinary combustible fires, like those fueled by paper or wood. Class B Fire Extinguishers. Class C Fire Extinguishers. Class D Fire Extinguishers. Class K Fire Extinguishers.
What are the 5 different classes of fire PDF?
There are 4 classes of fire: Class A. Ordinary combustibles or fibrous material, such as wood, paper, cloth, rubber, and some plastics. Class B. Flammable or combustible liquids such as gasoline, kerosene, paint, paint thinners and propane. Class C. Class D.
What is class F fire?
Class F fires that are caused by the ignition of cooking oils and fats. These fires occur when said oils or fats reach their flash point – in this case, flash point is around 315 °c. These fires can be extremely dangerous and can spread very quickly.
What are the 7 sides of a fire?
Command must consider the seven sides (or sectors) of the fire: front, rear, both sides, top, bottom, and interior. Fires cannot be considered under control until all seven sides are addressed. Failure to address all seven sides will frequently result in fire extension.
What are the 4 classes of fire extinguishers?
There are four classes of fire extinguishers – A, B, C and D – and each class can put out a different type of fire. Multipurpose extinguishers can be used on different types of fires and will be labeled with more than one class, like A-B, B-C or A-B-C.
What type of fire is Class A?
Class A: Ordinary solid combustibles such as paper, wood, cloth and some plastics. Class B: Flammable liquids such as alcohol, ether, oil, gasoline and grease, which are best extinguished by smothering.
What are the 6 classes of fire extinguishers?
6 TYPES OF EXTINGUISHERS ABC Powder Fire Extinguisher. Carbon Dioxide Fire Extinguisher. Wet Chemical Fire Extinguisher. Water Mist Fire Extinguisher. Foam Fire Extinguisher. Clean Agent Fire Extinguisher.
What is the most common class of fire?
Class A fires are the most common of the 5 different classes of fires. They occur when common combustible materials like wood, paper, fabric, trash, and light plastics catch fire.
How many classes of fire extinguishers are there?
There are five basic classifications of fuel and extinguishers, and extinguishers are labeled with either letter-shaped or pictorial symbols that indicate what types of fires they are intended for.
How many types of fire are there in Indian standards?
For all practical purposes, the basic types of fires can be grouped into following four classes: Class A fires—Fires involving solid combustible materials of organic nature such as wood, paper, rubber, plastics, etc, where the cooling effect of water is essential for extinction of fires.
What is K class fire extinguisher?
Class K fire extinguishers are more effective in extinguishing cooking fires. NFPA revised this standard in 1998, specifying that “Fire extinguishers provided for the protection of cooking appliances that use combustible cooking media (vegetable or animal oils and fats) shall be listed and labeled for Class K fires.”.
What is a class D fire UK?
Class D Fire Class D fires are fuelled by ignited metals such as titanium, aluminium or magnesium. The appropriate extinguishers used to tackle a class D fire include L2 or M28 dry powder extinguishers.
Why is there no Class E fire?
Electrical Fires This is not strictly a class (class E) of fire, because electricity is more or a source of ignition than a fuel. However, fires in live electrical equipment are an additional hazard. Electrical fires are not given their own full class, as they can fall into any of the classifications.
What extinguisher is Class C?
“C” ELECTRICAL EQUIPMENT Fire extinguishers with a Class C rating are suitable for fires in “live” electrical equipment. Both monoammonium phosphate and sodium bicarbonate are commonly used to fight this type of fire because of their nonconductive properties.
What is a group of firefighters called?
Fire Crew: An organized group of firefighters under the leadership of a crew leader or other designated official. Fire Front: The part of a fire within which continuous flaming combustion is taking place.
What’s a group of firefighters called?
The basic unit of firefighters is known as a “company” in many countries, including the United States, with its members typically working on the same engine. A “crew” or “platoon” is a subdivision of a company who work on the same shift.
What does KD mean fire?
Knocked down – means the main body of the fire has been suppressed.
