PORTABLE FIRE EXTINGUISHERS

State of GeorgiaBASIC FIRE FIGHTER TRAINING COURSE

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CLASSES OF FIRE

Class A - ordinary combustibles

Class B - flammable liquids

Class C - energized electrical

Class D - Combustible metals.

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EXTINGUISHING AGENT Water

Used on class A firesExtinguishes by reducing

temperature

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EXTINGUISHING AGENT Foam

Used on class A and B firesExtinguishes by reducing

temperature and smothering

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EXTINGUISHING AGENT Halon

Used on class B and C firesExtinguishes by interrupting

the chemical chain reaction

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EXTINGUISHING AGENT Carbon Dioxide

Used on class B and C fires

Extinguishes by displacing the oxygen and smothering the fire

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EXTINGUISHING AGENT Dry Chemical

Ordinary base used on class B and C fires

Multipurpose base used on class A, B, and C fires

Extinguishes by interrupting the chemical chain reaction

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EXTINGUISHING AGENTDry Powder

Used on certain class D firesExtinguishes by smothering

the fire

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FIRE EXTINGUISHERS TYPES Pump Tank

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FIRE EXTINGUISHERS TYPES Stored Pressure

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FIRE EXTINGUISHERS TYPES Cartridge Operated

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FIRE EXTINGUISHERS TYPESSelf Expelling

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OBSOLETE EXTINGUISHERS

Includes:• All inverting type extinguishers • Soda acid• Inverting foam• Inverting cartridge operated• Carbon tetrachloride

All obsolete extinguishers should be removed from service

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EXTINGUISHER RATING

Letter Rating• denotes the class of fire on which extinguisher can be used

• may have multiple ratings

Numerical rating• only given for class A and B extinguishers

• denotes the relative extinguishing potential of the extinguisher

– 10A will extinguish ten times as much fire as 1A

– 10B will extinguish ten times as much fire as 1B

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EXTINGUISHER LABELING

LettersGeometric shapes Pictographs

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EXTINGUISHER LABELING

Green Triangle A - for class A firesRed Square B - for class B firesBlue Circle C - for class C firesYellow Star D - for class D fires

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EXTINGUISHER LABELSPictographs

Class A Class B Class C

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EXTINGUISHER LABELSExamples

Class A; not for class B, C

Class A, B; not for class C

Class B, C; not for class A

Class A, B, C

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USING PORTABLE FIRE XTINGUISHERS

Select the appropriate extinguisher

P - Pull the pinA - Aim the nozzleS - Squeeze the handleS - Sweep the nozzle from side to

side

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VISUAL INSPECTION

LocationGeneral condition

• tamper seal, pin & inspection tag• pressure gauge• hose & nozzle• physical damage

Operating instructions Defective extinguishers should be

replaced