Class A fire: flammable solids--wood, paper, cloth, things like that.
Class B fire: flammable liquids
Class C fire: electrical fire. A Class C fire is one where electric sparks ignite something else like wood or gasoline, but it's classified differently because it must be extinguished with a nonconductive agent to prevent the firefighters from being electrocuted.
Class D fire: flammable metals
Class K fire: kitchen fires. These are technically Class B fires--grease is a flammable liquid--but they are very hard to put out, so special extinguishing systems are used.
4 Classes of Fire.CLASS A(ORDINARY COMBUSTIBLES)CLASS B(FLAMMABLE LIQUIDS & GASES)CLASS C(ELECTRICAL EQUIPMENTS)CLASS D(COMBUSTIBLE METALS)CLASS K(COOKING OILS & FATS)
Class b
Class B
a
Plain water can effectively be used on Class A fires, which involve ordinary combustibles such as wood, paper, and cloth. It can also be utilized on some Class B fires, specifically those involving flammable liquids, if the fire is small and manageable. However, water should never be used on Class C fires (electrical) or Class K fires (cooking oils and fats), as it can exacerbate the situation or pose safety risks. Always assess the fire type before applying water.
Fires are typically classified into different types based on the materials that fuel them. The main types include: Class A fires, which involve ordinary combustibles like wood and paper; Class B fires, fueled by flammable liquids and gases; Class C fires, involving electrical equipment; Class D fires, which are fueled by combustible metals; and Class K fires, associated with cooking oils and fats. Each type requires specific firefighting methods and agents for effective suppression.
Class A fires are called "ordinary combustibles". Wood or clothing fires are examples of Class A fires.
No, Class A fires are those fires that occur involving paper and wood Class B= flammable liquids and gases
Class D fires are fires in combustible metals such as sodium,magnesium, aluminum and potassium.
Class B fires are fires in flammable liquids such as gasoline, petroleum oil and paint. Class B fires also include flammable gases such as propane and butane.Class B fires do not include fires involving cooking oils and grease (these are now Class K fires).
A BC fire extinguisher is not suitable for fires involving ordinary combustibles such as wood, paper, or fabric (Class A fires) and fires involving flammable metals (Class D fires). It is specifically designed for flammable liquids (Class B) and electrical fires (Class C). Using a BC extinguisher on Class A or D fires can be ineffective and potentially dangerous. Always use the appropriate extinguisher type for the specific fire class.
1.Class A are fires in ordinary combustibles such as wood, paper, cloth, rubber, and many plastics.2.Class B fires are fires in flammable liquids such as gasoline, petroleum greases, tars, oils, oil-based paints, solvents, alcohols. Class B fires also include flammable gases such as propane and butane. Class B fires do not include fires involving cooking oils and grease.3.Class C fires are fires involving energized electrical equipment such as computers, servers, motors, transformers, and appliances. Remove the power and the Class C fire becomes one of the other classes of fire.4.Class D fires are fires in combustible metals such as magnesium, titanium, zirconium, sodium, lithium, and potassium.5.Class K fires are fires in cooking oils and greases such as animal and vegetable fats.
Liquid (oil) fires.
Class B extinguishers fight Flammable Liquid fires. The extinguisher classes: Class A: flammable solids Class B: flammable liquids Class C: fires involving electrical equipment. These agents don't conduct electricity. No extinguisher is rated as only for Class C fires; you will find Class B-C and Class A-B-C extinguishers. Class D: flammable metals Class K: kitchen fires
Class A- ordinary combustibles, such as wood or paper- leaves an Ash Class B- liquids- such as oil, gasoline. Liquids Boil Class C- has a live electrical Current Class D- metals, such as magnesium. Metals can Dent Class K- a Kitchen fire, such as burning fat.
Class B
Dry chemical extinguishers are most effective on Class B and Class C fires. Class B fires involve flammable liquids such as gasoline and oil, while Class C fires involve energized electrical equipment. The dry chemical agents work by interrupting the chemical reaction of the fire and can also smother the flames. However, they are not suitable for Class D fires involving combustible metals or Class K fires involving cooking oils and fats.