Class A (wood, paper, trash fires), and. Class B (fires involving flammable liquids such as petroleum, diesel, paint, oil and tar), and. Class C (electrical fires)
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 …
How do fire extinguishers work? – Explain that Stuff
The other one is called a propellant and is a pressurized chemical that makes the fire-fighting substance come out when you press the extinguisher handle. …
Fire extinguisher powder inhalation is one of the biggest dangers with fire extinguishers. It is very irritating to mucous membranes and may cause difficulties with breathing if …
People Also Ask what sprays out of a fire extinguisher
What are the main ingredients in fire extinguishers?
The most widely used powder in extinguishers is monoammonium phosphate; other powder ingredients include the metal alkali salts sodium bicarbonate (baking soda) and potassium bicarbonate (similar to sodium bicarbonate), though these are less effective on things like wood and paper fires.
What type of fire extinguisher is used to extinguish a fire?
Unlike powder, foam can be used to progressively extinguish fires without flashback. Aqueous film-forming foam ( AFFF ), used on A and B fires and for vapor suppression. The most common type in portable foam extinguishers.
What gas is used in a water extinguisher?
Water extinguishers A water extinguisher is like a giant water pistol, but instead of using pressure from your finger to fire out the water, it uses pressure from a trapped gas (the propellant). Typically, this is nitrogen or carbon dioxide. A ring or pin on the handle stops the fire extinguisher from being set off by accident.
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.
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Spraying A Fire Extinguisher Video Answer
Reference:
https://www.usfa.fema.gov/
https://en.wikipedia.org/wiki/Fire_extinguisher