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Did you know that there are different types of fire extinguishers? And did you also know that each type of extinguisher works in a different way to put out a fire?
In this blog post, we will discuss the different types of fire extinguishers and how they work. We will also provide tips on how to choose the right extinguisher for your needs.
What are different types of fire extinguishers and how they work
Different types of fire extinguishers are designed to fight different kinds of fires.
- The most common type of fire extinguisher is the water extinguisher, which is effective against fires involving wood, paper, and textile.
- Foam extinguishers are effective against flammable liquids, such as petrol and oil.
- CO2 extinguishers are effective against electrical fires, as they do not conduct electricity.
- Powder extinguishers are effective against all types of fire, but they should only be used in enclosed spaces due to the risk of inhaling the powder.
- Water mist and wet chemical extinguishers are effective against cooking oil fires.
How to choose the right extinguisher for your needs
When choosing a fire extinguisher, you need to consider the type of fire that you are likely to encounter.
For example, if you are likely to encounter electrical fires, then you should choose a CO extinguisher. If you are likely to encounter flammable liquid fires, then you should choose a foam extinguisher.
If you are unsure of the type of fire that you are likely to encounter, then you should choose a powder extinguisher because it is effective against all types of fire.
What are the classes of fire extinguishers?
The fire classification system categorizes fires by the type of fuel involved. There are different types of fires. Each type is represented by a letter of the alphabet and an icon. Electrical fires are not included in this. In the event of a fire, it allows people to select an appropriate fire extinguisher.
- Class A extinguishers are designed for use on ordinary combustible materials, such as wood, paper, or cloth.
- Class B extinguishers are designed for use on flammable liquids, such as gasoline, oil, or grease.
- Class C extinguishers are designed for use on flammable gases like methane and propane.
- Class D extinguishers are designed for use on flammable metals.
- Class F extinguishers are designed for use on cooking fires.
- Electrical fires require a Class C fire extinguisher because water can conduct electricity and make the situation worse.
The other classes of fire extinguishers work by smothering the fire with an agent that cuts off the oxygen supply. Class A extinguishers use water, Class B extinguishers use dry chemical or foam, Class D extinguishers use dry powder, and Class F extinguishers use wet chemical.
When using a fire extinguisher, remember the acronym PASS:
P – Pull the pin at the top of the extinguisher that keeps the handle from being accidentally activated.
A – Aim low, pointing the extinguisher nozzle (or hose) at the base of the fire.
S – Squeeze the handle to release the extinguishing agent.
S – Sweep from side to side until the fire is extinguished.
Once the fire is out, monitor the area in case of re-ignition and call the fire department to inspect the area. Do not use water on an electrical fire, as this will make the situation worse. For a cooking fire, smother the flames with a wet chemical extinguisher or baking soda.