02. Class B Fire Extinguishers. Class B fire extinguishers are rated for use on flammable liquids like grease, gasoline, and oil, and most often use C02 or clean agents to safely suppress fires. Both clean agents and CO2 work to remove the oxygen from a fire, suffocating it and eventually extinguishing it.
What Are The 5 Classes of Fire Extinguishers?
As the name implies, they discharge a foam material rather than a liquid or powder. They are not suitable for use in freezing temperatures. An advantage of this type of extinguisher when used on Class B flammable liquid fires of appreciable depth is the ability of the agent to float on and secure the liquid surface, which helps to prevent reignition.
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What is a Class A fire extinguisher used for?
Class A fire extinguishers are used for ordinary combustibles, such as wood, paper, cloth, and even plastic. These are well suited for putting out ordinary household fires, making this type great for use in home kitchens and garages. These extinguishers usually use water or dry chemical powders to blanket a fire and/ or absorb the heat.
What type of liquid is used in fire extinguishers?
Water is the primary liquid used in these extinguishers, although sometimes other additives are also included. A drawback for pure water fire extinguishers is that it is not suitable for use in freezing conditions since the water inside will freeze and render the extinguisher unusable.
What is the best type of fire extinguisher?
Dry Chemical fire extinguishers are the most popular and versatile type because they can be used for several different classes of fires. The chemical powder contained in them disrupts the chemical reaction of the fire when released.
What is an example of a multi-purpose fire extinguisher?
For example, A-B-C fire extinguishers can be used for all three of these types of fires. They can also cover other combinations of fire types, such as A-B or B-C, depending on the extinguisher. Carbon dioxide is used in multi-purpose fire extinguishers.
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TYPES OF FIRE AND FIRE EXTINGUISHERS | WHICH FIRE EXTINGUISHER TO BE USED ON WHICH CLASSES OF FIRE Video Answer
Reference:
https://www.usfa.fema.gov/
https://en.wikipedia.org/wiki/Fire_extinguisher