Class B fires are not really different from other fires in that they have the same basic “fire tetrahedron” elements. In order to have a fire, you need fuel, oxygen, heat and a chemical reaction. The only difference is the fuel. The fuel for a Class B is a combustible gas or liquid. Any of the following may be the fuel source for a Class B …
There are a variety of fire extinguisher types designed to accomplish this very task specifically on Class B fires: CO2: A carbon dioxide fire extinguisher works on a Class B fire by expelling CO2 to suffocate the fire, removing the oxygen necessary to keep it burning. It also helps with removing the heat, as the discharge is very cold.
How to Detect and Extinguish a Class B fire (Flammable …
Class B fires are fires which involve flammable or combustible liquids. The presence of these liquids, which are also known as hydrocarbon fuels, represent the fuel aspect of the fire triangle (heat, fuel and oxygen) and provide the materials necessary to begin, develop and maintain a fire. The type of flammable liquids involved in Class B …
If you extinguish fires using incorrect methods, you could end up making the fire worse. There are five different classes of fires, and a different letter is used to …
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Why are Class B fires so difficult to extinguish?
The fuel sources of class B fires (gases and liquids) can be quite volatile and cannot be extinguished by water, which will only make the fuel source spread, thus spreading the fire. That is why it is important only to use extinguishing agents and methods designed specifically for Class B fires.
How do you put out a Class B fire?
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. Of course, having a fire extinguisher that is equipped to deal with class B fires is certainly ideal, especially in a workplace environment vulnerable to Class B fires.
What type of fire extinguisher is best for a B fire?
Dry Chemical: Dry chemical extinguishers, whether regular or multipurpose models are classified for B fires as their agent extinguishes a fire by interrupting the chemical reaction of the fire triangle. These extinguishers have a better range, as they use a compressed, non-flammable gas that can propel the dry extinguishing agent further.
What happens if you extinguish a fire with the wrong methods?
If you extinguish fires using incorrect methods, you could end up making the fire worse. There are five different classes of fires, and a different letter is used to identify each one: Class A, B, C, D, and K.
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How To Extinguish a Fire (Class A and B) Video Answer
Reference:
https://www.usfa.fema.gov/
https://en.wikipedia.org/wiki/Fire_extinguisher