Question: What can Class B fire extinguishers be used on?

Class B fires involve flammable and combustible liquids such as gasoline, alcohol, oil-based paints, lacquers. Therefore, extinguishers with a B rating are designed to extinguish fires involving flammable and combustible liquids.

Which types of fire extinguishers used for Class B fire?

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.

On which of the following types of surface a Class B fire extinguisher is not used?

Fire buckets can be used filled with water on Class A fires, or with sand to use as an absorbing agent on spilled flammable liquids (Class B). They must not be used with water on burning fat or oil or on electrical appliances.

What are examples of class B type of fire?

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. For example, propane, natural gas, gasoline and kerosene fires are types of Class B fires.

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Can you use a Class B fire extinguisher on a grease fire?

Class B extinguishers are rated for fires involving flammable liquids such as kitchen grease, gasoline, oil, solvents and oil-based paint. Class B extinguishers are numerically rated on the number of square feet of fire they can put out.

What type of fire extinguisher should be used on materials?

Use: Water fire extinguishers are best for combatting Class A fires, for example fires involving organic solid materials, such as wood, cloth, fabric, paper and plastics. Dangers: Do not use on burning fat or oil and also never use on fires involving electrical appliances.

What are Class B and C fires?

Class B fires which involve flammable liquids and gases, solvents, oils, greases (excluding cooking oils/greases in depth) tars, oil-based paints and lacquers. Class C fires which involve energized electrical equipment.

What is considered a Class B fire?

Class B: Flammable liquids such as alcohol, ether, oil, gasoline and grease, which are best extinguished by smothering.

When using foam a Class B fire is extinguished by?

Foam extinguishes Class B Fires by covering the flammable liquid with a foam blanket, thus cutting off the oxygen supply from the combustion process. The water content of the foam will help lower the temperature of the flammable liquid.

What is Class B fire caused by?

So a class B fire is very dangerous as it is the burning of flammable liquids. Examples of flammable liquids include petrol, oil, paraffin, alcohol and certain paints. They can ignite by heating them up to extreme temperatures, or with a simple spark.

Which of the following can be used on Class A and Class B fires?

Dry Chemical Fire Extinguishers

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The most widely used type of fire extinguisher is the multipurpose dry chemical that is effective on Class A, B, and C fires. This agent also works by creating a barrier between the oxygen element and the fuel element on Class A fires.

What kind of extinguishers are ABC?

ABC fire extinguishers are considered “tri-class” or “multi-purpose” extinguishers which can be used on Class A, B, or C fires. Every fire extinguisher has an alphabet rating that tells you what types of fires it can extinguish.

Which fire extinguisher can be used on cooking oil?

Wet chemical extinguishers are suitable for use on Class F fires involving cooking oils and fats, such as lard, olive oil, sunflower oil, maize oil and butter.

Which fire extinguisher is used for electrical fire?

Which extinguishers are suitable for electric equipment? Traditionally, CO2 extinguishers are used for electric equipment, as the CO2 gas does not carry electricity. However, CO2 gas can drift off and the fire can re-ignite.