How does a fire extinguisher work?
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 are the 4 steps in using a fire extinguisher?
Select the appropriate type of fire extinguisher. Discharge the extinguisher within its effective range using the P.A.S.S. technique (pull, aim, squeeze, sweep). Back away from an extinguished fire in case it flames up again.
What are the 3 methods of extinguishing a fire?
1 Cooling the Burning Material. Cooling the burning material is the most common method used to extinguish fire.
How does a fire extinguisher work class 8?
The job of a fire extinguisher is to cut off the supply of air or bring down the temperature of the fuel. Fig. 9 Follow PASS. Soda – acid fire extinguisher: Carbon dioxide liberated by the reaction of sulphuric acid with sodium bicarbonate solution comes out with a stream of liquid water at high pressure.
How does a fire extinguisher work class 10?
When the knob of the fire extinguisher is pressed, then sulphuric acid mixes with sodium hydrogen carbonate solution to produce carbon dioxide gas which forms a blanket around the burning substance and cuts off the supply of air to the burning substance. This stops the process of burning and fire gets extinguished.
How do you use a fire extinguisher explain pass method with the help of diagram?
When operating a fire extinguisher, remember the word PASS:
- Pull the pin. Hold the extinguisher with the nozzle pointing away from you and release the locking mechanism.
- Aim low. Point the extinguisher at the base of the fire.
- Squeeze the lever slowly and evenly.
- Sweep the nozzle from side-to-side.
What are the ways to extinguish fire caused by flammable substances?
Types of Fires and How to Extinguish Them
- Class A Fires – Extinguish with Water.
- Class B Fires – Extinguish by Depleting Oxygen.
- Class C Fires – Extinguish by Cutting Power.
- Class D Fires – Extinguish with Dry Powder Agents.
- Class K Fires – Extinguish with Chemical Fire Extinguishers.
- Professional Fire Damage Restoration.
What is the importance of fire extinguishers?
Fire extinguishers play a vital role in any fire protection plan in any environment. They are a first aid response to fire and can help prevent catastrophic damage to property and even loss of life.
How does a fire extinguisher work for class 10?
Soda acid type extinguisher acts by cutting off supply of air. It acts on all types of fire except due to electrical and inflammable liquids. The carbon dioxide is liberated by the action of acid on baking soda. It increases the percentage of carbon dioxide in air (CO2 is non supporter of combustion).
What is Flame Class 8 short?
Answer: Flame is a region where the burning or combustion of gaseous substances take place.
How does soda acid fire extinguisher work 8?
Soda acid type extinguisher acts by cutting off supply of air. It acts on all types of fire except due to electrical and inflammable liquids. The carbon dioxide is liberated by the action of acid on baking soda. It increases the percentage of carbon dioxide in air (CO.
How do you fight fire with a fire extinguisher?
Using a fire extinguisher
- Pull: Pull the pin, this will break the tamper seal.
- Aim: Aim low, pointing the nozzle or hose at the base of the fire.
- Squeeze: Squeeze the handle to release the extinguishing agent.
- Sweep: Sweep from side to side at the base of the fire, the fuel source, until the fire is out.