People also ask, how do you put out 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.
Likewise, what is a Class B fire extinguisher? 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.
Similarly, why co2 is not used for class A fire?
The carbon dioxide is also very cold as it comes out of the extinguisher, so it cools the fuel as well. CO2s may be ineffective at extinguishing Class A fires because they may not be able to displace enough oxygen to successfully put the fire out. Class A materials may also smolder and re-ignite."
What types of fires are not extinguished by 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.
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What are the 4 types of fire?
- Class A extinguishers will put out fires in ordinary combustibles such as wood and paper.
- Class B extinguishers are for use on flammable liquids like grease, gasoline and oil.
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How do you extinguish a fire?
- Class A Fires – Extinguish with Water.
- Class B Fires – Extinguish by Depleting Oxygen.
- Class C Fires – Extinguish by Cutting Power.
- Class D Fires – Extinguish with Dry Powder Agents.