Tuesday 31 October 2017

FIRE: Introduction


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.









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FIRE: Introduction

ALL ABOUT FIRE  Fire is the most common serious hazard that one faces in an industry or residential complex. While proper procedure ...