What are Class A fires
There are four classes of fires: 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 Class A and B fires
Classes of fire Class A – fires involving solid materials such as wood, paper or textiles. Class B – fires involving flammable liquids such as petrol, diesel or oils. Class C – fires involving gases.
What are the 4 types of fires
What are the fire safety rules? Class A – fires involving solid materials such as wood, paper or textiles. Class b – fires involving flammable liquids such as petrol, diesel or oils. Class c – fires involving gases.
What do you use on a Class B fire
To extinguish a Class B fire, you want to cut off the oxygen. You can use carbon dioxide gas to dilute the oxygen available and stop the burning. Smothering the fire with bicarbonate (baking soda) or potassium carbonate will also work.
What materials cause a Class A fire
Class A fires, also sometimes known as ‘ordinary combustible’ fires, involve solid materials of an organic nature, such as wood, paper, cloth, rubber and plastics which do not melt.
What are the 3 methods of extinguishing a fire
All fires can be extinguished by cooling, smothering, starving or by interrupting the combustion process to extinguish the fire. One of the most common methods of extinguishing a fire is by cooling with water.
What is the most dangerous in terms of fire
Class C FiresClass C. Fires caused by flammable gases such as butane and propane make up those in Class C, and are arguably the most dangerous given their propensity to explode.
What is Class D fire rating
Definition. Combustible materials: Easily flammable. Construction Products. F. The European classifications break down into codes, the ‘d’ part relates to ‘flaming droplets and particles’ during the first 10 minutes of exposure.
How do you fight a Class A fire
Fighting Class A Fires Heat can be eliminated by dousing the flames with water, or the supply of oxygen can be prevented by smothering the fire with foam from a fire extinguisher. In some cases, such as forest fires, the fuel is often physically removed in order to stop the fire from spreading.
Which extinguisher is only suitable for Class A fires
Water extinguishersWater extinguishers are mostly used for class A fire risk. In most premises, it is necessary to have either foam or water extinguishers. It has a bright red label. This type of extinguisher is used for fires caused by various organic materials including fabrics, textiles, coal, wood, cardboard and paper among others.
How do you put out a Class B fire
Class B fires should be extinguished using foam, powder, or carbon dioxide extinguishers, according to the Fire Equipment Manufacturer’s Association. These types of extinguishers work by cutting off a fire’s oxygen supply.
What type of fire is class B
“B” LIQUIDS Fire extinguishers with a Class B rating are effective against flammable liquid fires. These can be fires where cooking liquids, oil, gasoline, kerosene, or paint have become ignited. Two commonly used chemicals are effective in fighting these types of fires.
Which kind of fire that Cannot be extinguished using water
APWs are designed for Class A (wood, paper, cloth) fires only. Never use water to extinguish flammable liquid fires. Water is extremely ineffective at extinguishing this type of fire, and you may, in fact, spread the fire if you try to use water on it. Never use water to extinguish an electrical fire.
What is Class B fire hazard
In fire classes, a Class B fire is a fire in flammable liquids or flammable gases, petroleum greases, tars, oils, oil-based paints, solvents, lacquers, or alcohols. … While water is used on Class A fires, using water on a Class B fire (such as a grease fire) is extremely dangerous.
What are the 5 classes of fire
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 is burning type f fire
Class F fires are fires which involve cooking oil or fat. … Whereas flammable liquids, such as petrol, usually have low flash and auto ignition temperatures, cooking oil or fats require temperatures in excess of 340°C to ignite.