They work by smothering the fire: when you spread a thin layer of foam over a fire, you cut the fuel off from the oxygen around it. Foam extinguishers also help to absorb heat, since the cool foam they release contains a lot of water.
Here’s the sequence of events in a typical wood fire: Something heats the wood to very high temperatures. This could be any number of things — focused light, friction, something else that is already … When the wood reaches about 500 degrees Fahrenheit (260 degrees Celsius), the …
How Does a Fire Extinguisher Work? – SelectSafety.net
Heat. The purpose of a fire extinguisher is to break this process by removing or blocking one of these three elements. Once this happens, the fire will either extinguish immediately or burn out. To remove heat, a fire extinguisher can smother the fire. To remove oxygen, the fire extinguisher can smother it as well.
Working of a Fire Extinguisher All fire extinguishers work on the basic principle of removing any of the three basic elements needed for combustion—oxygen, heat or fuel. Since their creation two centuries ago, fire extinguishers have played an integral part in saving lives being threatened by a perilous fire.
People Also Ask how does fire extinguisher work
How do you operate the fire extinguisher?
“That’s a scary situation, and that’s not the time to learn how to use an extinguisher, so be familiar with how to pull out the pin, how to unhook a nozzle if there’s a hose with the nozzle attached.” Swenson says you should have a lid close by when cooking on the stove.
How to use fire extinguisher correctly?
Using a fire extinguisherPull: 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.
How do fire extinguishers help stop a fire?
Pull – Pull the safety pin and break the tamper seal.Aim – Aim the nozzle of the extinguisher towards the fire and aim low.Squeeze – Gently start squeezing the handle on top to release the extinguishing agent.Sweep – Move the hose in a sweeping fashion and keep aiming at the base of the fire until it is put off. …
How to use a fire extinguisher in the workplace?
Pull the pin on the fire extinguisher.Aim the nozzle at the base of the fire.Squeeze the trigger in a controlled manner.Sweep the nozzle of the fire extinguisher from side to side to cover the entire area.
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How Fire Extinguishers Work Video Answer
Reference:
https://www.usfa.fema.gov/
https://en.wikipedia.org/wiki/Fire_extinguisher