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Fire

The result of the chemical combination of a

combustible material (fuel) with oxygen in the

presence of enough heat.

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Basic Chemistry of Fire

1. Fuel or Combustible material

a material,

which contains chemical elements that will

react with oxygen, and under proper

conditions, produces fire.

2. Oxygen

we need 16% oxygen to sustain fire

3. Sufficient heatto raise the temperature of the

fuel surface to a point where chemical union of

the fuel and oxygen occurs.

4. Chemical Chain Reaction

vapors of gases,

which are distilled during burning process of a

material, are carried into the flame.

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Fire Tetrahedron

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Fire Extinguishing Method

1. Isolation

by eliminating the

combustible material

2. Smothering by cutting of the oxygen

supply3. Quenchingby cooling to a point below

ignition temperature

4. Inhibition by inhibiting the rapid

oxidation of the fuel

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Classification of Fires and Extinguishing Methods

1. Class Afires

are fires involving organic solids

like paper, wood, etc.

2. Class B fires are fires involving flammable

liquids

3. Class C fires

are fires involving electrical

equipment

4. Class D fires are fires involving combustible

metals such as magnesium, titanium,

zirconium, sodium and potassium

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Classification of Fires and Extinguishing Methods

1.ClassAfiresASH

2.ClassBfiresBOILING

3.ClassC firesCURRENT

4.ClassDfires

DENSE

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Classes of Fire

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How to use Fire Extinguisher

Twist the pin

Pull the pin

Aim low at the base of the fire

Squeeze the lever

Sweep from side to side

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Types of Fire Extinguisher

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How to use a FIRE EXTINGUISHER

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Lesson 7Fire Safety

Sources:

DOLE

Occupational Safety and Health StandardsPEME Consultancy, IncCOSH Manual

Youtube.com

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Do not use WATERon GREASEor OILfire

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Cost of Fire Extinguisher

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Fire Escape Plan

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Fire Exit Door

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Fire in 5 minutes

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Fire Escape Planning

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End of Presentation