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The Fire Triangle

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Fire Triangle

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Fuels

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Types

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Rules

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How To Use a Fire Extinguisher

In order to understand how fire extinguishers work, you first need to know a little bit about fire.

Four things must be present at the same time in order to produce fire:

  • Enough oxygento sustain combustion,
  • Enough heatto raise the material to its ignition temperature,
  • Some sort of fuelor combustible material, and
  • The chemical, exothermic reactionthat is fire.
Fire Triangle

Oxygen, heat, and fuel are frequently referred to as the "fire triangle." Add in the fourth element, the chemical reaction, and you actually have a fire "tetrahedron." The important thing to remember is: take any of these four things away, and you will not have a fire or the fire will be extinguished.

Essentially, fire extinguishers put out fire by taking away one or more elements of the fire triangle/tetrahedron.

Fire safety, at its most basic, is based upon the principle of keeping fuel sources and ignition sources separate.

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