Definition of fire extinguisher. : a portable or wheeled apparatus for putting out small fires by ejecting extinguishing chemicals.
Fire extinguishers are portable devices used to extinguish small fires or reduce their destruction before firefighters arrive at the scene. These …
What is Fire Extinguisher: Definition, Classes, Types, …
A fire extinguisher is an external fire safety system useful to extinguish or control minor fires, often in emergency cases. It is not for use in an out-of-control fire, such as where the fire has reached the ceilings, endangering the customer (i.e., no escape route, smoke , explosion hazard, etc.) or otherwise requires the skills of a fire brigade.
A fire extinguisher is an active fire protection device used to extinguish or control small fires, often in emergency situations. It is not intended for use on an out-of-control fire, such as one which has reached the ceiling, endangers the user (i.e., no escape route, smoke, explosion hazard, etc.), or otherwise requires the equipment, personnel, resources and/or expertise of a fire brigade. Typically, …
People Also Ask what is the definition of fire extinguisher in science
What is a fire extinguisher?
fire extinguisher. noun. : a portable or wheeled apparatus for putting out small fires by ejecting extinguishing chemicals.
Why is fire extinguisher not effective on Class A fires?
This agent is not generally effective on class A fires because the agent is expended and the cloud of gas dissipates quickly, and if the fuel is still sufficiently hot, the fire starts up again. While liquid and gas fires do not usually store much heat in their fuel source, solid fires do.
How does a dry chemical extinguish a fire?
Dry chemical This is a powder-based agent that extinguishes by separating the four parts of the fire triangle. It prevents the chemical reactions involving heat, fuel, and oxygen, thus extinguishing the fire. During combustion, the fuel breaks down into free radicals, which are highly reactive fragments of molecules that react with oxygen.
When was the first chemical fire extinguisher invented?
Also in 1887, carbonic acid gas was described as a fire extinguisher for engine chemical fires at sea and ashore. In 1928, DuGas (later bought by ANSUL) came out with a cartridge-operated dry chemical extinguisher, which used sodium bicarbonate specially treated with chemicals to render it free-flowing and moisture-resistant.
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The Smokin' Science of Fire Extinguishers Video Answer
Reference:
https://www.usfa.fema.gov/
https://en.wikipedia.org/wiki/Fire_extinguisher