Foam: These extinguishers work on both Class A and B fires. The foam agent works on Class B fires by separating the fuel and the oxygen by creating a seal on the surface of the flammable liquid. However, these extinguishers will only be effective when the flammable liquid is not free-flowing.
Elite Fire explains more on why a water fire extinguisher should never be used on a Class B fire: “One method of fire combat which should not be used in the event of a Class B fire is a water fire extinguisher. This is because a lot of …
What is Class B Fire Extinguisher Used For?
CO2: Carbon dioxide is a fire extinguisher that operates based on a Class B flame by extinguishing CO2 to stop the flame, thus removing the oxygen needed to keep the flame burning.. It also helps in the removal of the heat as the discharge is extremely cold.
People Also Ask how does a class b fire extinguisher work
How does a Class A fire extinguisher work?
These extinguishers usually use water or dry chemical powders to blanket a fire and/ or absorb the heat. The heat of the fire is removed by the water component, while the oxygen is removed by the foam. Class A extinguishers are rated based on their water equivalency. Each A is matched to 1 1/4 gallons of water.
What is a Class B fire extinguisher?
In this blog, read on to learn just what exactly constitutes a Class B fire, what types of extinguishers qualify as Class B fire extinguishers, and to better understand what a Class B fire extinguisher can be used for. What Are Class B Fires? As alluded to above, Class B fires are ones in which flammable liquids and/or gases become involved.
Are all fire extinguishers created equal?
Since not all fires are created equal, neither are all fire extinguishers. Life and property can be dependent upon the use of the correct fire extinguisher on a fire.
How does fire extinguisher use affect life and property?
Life and property can be dependent upon the use of the correct fire extinguisher on a fire. This is especially true when fires involve more than standard combustible materials (such as wood, paper, etc.) and include elements such as flammable liquids, as is the case in Class B fires.
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How Fire Extinguishers Work Video Answer
Reference:
https://www.usfa.fema.gov/
https://en.wikipedia.org/wiki/Fire_extinguisher