The chemical reaction that is fire. How a Fire Extinguisher Works: Portable fire extinguishers apply an extinguishing agent that will either cool burning fuel, displace or remove oxygen, or stop the chemical reaction so a fire cannot continue to burn. When the handle of an extinguisher is compressed, agent is expelled out the nozzle.
The tank contains the extinguishing agent and propellant gas. According to the type of fire extinguisher, the inside can contain water, foam, liquid and gaseous carbon dioxide, or dry powder with compressed nitrogen. A siphon tube runs through the barrel, which allows the liquid or agent to expel out of the hose when pressure is built up.
How Often Is Fire Extinguisher Training Required? | Basin …
Fire extinguisher types that employees may need training on. Soda acid extinguisher — This type of extinguisher can be used to put out fires on burning wood, paper, cloth and some plastics. Foam extinguisher — This type of extinguisher is suitable for solids on fire like wood. It’s also suitable for liquids on fire like petrol.
Aim the extinguisher. Squeeze the trigger or top handle. Sweep t he fire area with the extinguisher‘s spray until the fire is completely out. For floor fires, sweep from the edges in. For wall fires, sweep from the bottom up. …
People Also Ask is a fire extinguisher emergency or ppe
What kind of fire extinguisher do you use for multiple purposes?
Dry chemical extinguishers are usually rated for class B and C fires and may be marked multiple purpose for use in A, B, and C fires. They contain an extinguishing agent and use a compressed, non-flammable gas as a propellant.
Can you use a co 2 extinguisher for a Class A fire?
CO 2 extinguishers are designed for Class B and C (flammable liquid and electrical) fires only. CO 2 is not recommended for Class A fires because they may continue to smolder and re-ignite after the CO 2 dissipates. Never use CO 2 extinguishers in a confined space while people are present without proper respiratory protection.
What do the letters on a fire extinguisher mean?
The letters (A, B, and C) represent the type (s) of fire for which the extinguisher has been approved. The number in front of the A rating indicates how much water the extinguisher is equal to and represents 1.25 gallons of water for every unit of one. For example, a 4-A rated extinguisher would be equal to five (4 x 1.25) gallons of water.
What are extinguishing agents in Class K fire extinguishers?
Extinguishing agents in many Class K extinguishers are electrically conductive and should only be used after electrical power to the kitchen appliance has been shut off. Class K extinguishers use a variety of agents.
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Why Fire Extinguishers Are Important Video Answer
Reference:
https://www.usfa.fema.gov/
https://en.wikipedia.org/wiki/Fire_extinguisher