How do you know what type of fire extinguisher to use?
Most fire extinguishers will have a pictograph label telling you which classifications of fire the extinguisher is designed to fight. For example, a simple water extinguisher might have a label like the one below, indicating that it should only be used on Class A fires.
What are the types of fire extinguishers and their uses?
Types of extinguishers
- Water extinguishers. Water extinguishers are one of the most cost-effective ways to fight Class A fires, those fuelled by solid materials such as paper, wood and textiles.
- Foam extinguishers.
- Powder extinguishers.
- Carbon dioxide extinguishers (CO2)
- Wet chemical extinguishers.
- Fire blankets.
How does a fire extinguisher work and how should it be used?
Most fire extinguishers work by separating the fuel from the oxygen. The oxygen comes from the air. It is the same oxygen we breathe. Since the oxygen has to be in contact with the fuel, if you can coat the fuel with something that keeps the oxygen away, the fire will go out.
What 4 things make up the fire tetrahedron?
Oxygen, heat, and fuel are frequently referred to as the “fire triangle.” Add in the fourth element, the chemical reaction, and you actually have a fire “tetrahedron.” The important thing to remember is: take any of these four things away, and you will not have a fire or the fire will be extinguished.
What fire Cannot be put out?
One example is forest fires. They can quickly spread to such a large area that there aren’t enough firefighters close by to be able to battle them effectively. They may need to burn until they run out of fuel and die out on their own. There is another type of fire that is often impossible to put out.
What is the best thing to fight an electrical fire class 7?
Blowing on a burning matchstick or a candle removes the hot air around the flame, bringing down its temperature below the flash point. Sometimes water is sprayed on a fire. It absorbs heat from the burning fuel and lowers the temperature. It also cuts off the supply of oxygen, and therefore, fire is extinguished.