Before extinguishing a fire, it is important to understand the elements that make up a fire. In order for a fire to occur, four elements must be present: Oxygen, fuel, heat and a chemical chain reaction. This is represented by the Fire Tetrahedron. When any of the four elements are removed, the fire will go out. The fire extinguishers function is to remove one of the four components of the Fire Tetrahedron.
Fire extinguishers are rated based upon the types of fires they are designed to put out. These ratings are identified on the label of the fire extinguisher. Care should be taken to ensure the extinguisher chosen to put out a fire is proper for the type of fire. Listed below are the four main types of ratings.
The college uses the following types of fire extinguishers:
P: Pull the pin.
A: Aim at the base of the fire.
S: Squeeze the handle or lever.
S: Sweep from side to side.
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