Handheld extinguishers, which are commonly sold at hardware stores for use in the kitchen or garage, are pressurized with nitrogen or carbon dioxide (CO2) to propel a stream of fire-squelching …
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, a …
What’s Inside a Fire Extinguisher
Fire extinguishers contain different chemicals, depending on the application. Handheld extinguishers, which are commonly sold at hardware stores for use in the kitchen or garage, are pressurized with nitrogen or carbon dioxide (CO2) to propel a stream of fire-squelching agent to the fire. The active material may be a powder such as potassium …
People Also Ask what does a fire extinguisher have in it
What is a fire extinguisher made of?
Fire extinguisher. Cartridge-operated extinguishers contain the expellant gas in a separate cartridge that is punctured prior to discharge, exposing the propellant to the extinguishing agent. This type is not as common, used primarily in areas such as industrial facilities, where they receive higher-than-average use.
What are the different types of fire extinguishers?
Electrical fires require a Class C extinguisher, and Class D extinguishers are meant for combustible metals, such as magnesium. Class K fire extinguishers are used to extinguish cooking combustibles, such as animal and vegetable fats and cooking oils. Mono ammonium phosphate is a dry chemical used in Class A, B and C fire extinguishers.
How much dry chemical is in a fire extinguisher?
A typical dry chemical extinguisher containing 5 lb (2.3 kg). of monoammonium phosphate dry chemical. A 10 lb (4.5 kg) stored pressure purple-K fire extinguisher An 18 lb (8.2 kg) US Navy cartridge-operated purple-K dry chemical ( potassium bicarbonate ) extinguisher.
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.
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How Fire Extinguishers Work Video Answer
Reference:
https://www.usfa.fema.gov/
https://en.wikipedia.org/wiki/Fire_extinguisher