How Fires Start
Fire is a chemical reaction involving rapid oxidation or burning of a fuel. It needs three elements to occur:
- FUEL – Fuel can be any combustible material – solid, liquid or gas. Most solids and liquids become a vapor or gas before they will burn
- OXYGEN – The air we breathe is about 21 percent oxygen. fire only needs an atmosphere with at least 16 percent oxygen
- HEAT – Heat is the energy necessary to increase the temperature of the fuel to a point where sufficient vapors are given off for ignition to occur
Take any one of these factors away, and the fire cannot occur or will be extinguished if it was already burning.
NFPA Fire Classification System
There are five classes of fire within the NFPA classification system:
- CLASS A
- CLASS B
- CLASS C
- CLASS D
- CLASS K
How A Fire Extinguisher Works
A fire extinguisher is an absolute necessity in any home or office. Find out how these essential devices kill flames in this HowStuffWorks’ video “How a Fire Extinguisher Works” .
How To Use A Portable Fire Extinguisher
This video was created by the Fire Equipment Manufacturers’ Association to train viewers to learn how to assess a potential fire situation and use a portable fire extinguisher in the event of a fire emergency.
For more information about the Fire Equipment Manufacturers’ Association, visit http://www.femalifesafety.org
How Extinguishers Are Made
Discovery / Science Channel’s “How It’s Made” Fire Extinguishers episode on how fire extinguishers are made.