ALL
ABOUT FIRE
Fire is the most common serious hazard that one
faces in an industry or residential complex. While proper procedure and
training can minimize the chances of an accidental fire, you must still be
prepared to deal with it.
Fire Triangle is a tetrahedron, because there are four elements
that must be present for a fire to exist. There must be oxygen to
sustain combustion, heat to raise the
material to its ignition temperature, fuel to support
the combustion and a chemical reaction between
the other three elements.
Remove any one of the four
elements to extinguish the fire.
The
concept of Fire Protection is based upon keeping these four elements separate.
Types of
Fires:
Not all fires are the same. Different fuels create different
fires and require different types of fire extinguishing agents.
Class A :
Class A fires are fires in ordinary
combustibles such as wood,
paper, cloth, trash, and plastics. In simple
terms, we can define Class A fire as the fire which occurs in SOLIDS.
Class B: Class
B fires are fires in flammable liquids such as gasoline, petroleum oil and paint. Class B fires do not include fires involving cooking oils
and grease. In simple terms, we can define
Class B fire as the fire which occurs in LIQUIDS.
Class C: Class C fires are fires involving flammable gases such as propane and butane. Energized electrical equipment such as motors, transformers, and appliances also covers under this class.
Class D: Class
D fires are fires in combustible metals such as potassium, sodium, aluminum, and magnesium.
Class K: Class
K fires are fires in cooking oils and greases such as animals fats and vegetable fats.
