Fire Extinguisher Training D. Objectives Understand the combustion process and different fire...

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Fire ExtinguisherFire Extinguisher TrainingTraining

ObjectivesObjectives

• Understand the combustion Understand the combustion process and different fire process and different fire classes.classes.

• Understand fire extinguisher Understand fire extinguisher types, operating procedures, types, operating procedures, capabilities, and limitations. capabilities, and limitations.

• Understand basic firefighting Understand basic firefighting concepts:concepts:

• R.A.C.E.R.A.C.E.• P.A.S.S.P.A.S.S.

The Combustion ProcessThe Combustion Process

The Fire TriangleThe Fire Triangle

Fire ClassesFire Classes

A Trash Wood Paper C Electrical Equipment

B Liquids GreaseCOMBUSTIBLE

METALS

• wood

• cloth

• paper

• rubber

• many plastics

• gasoline

• oil

• grease

• tar

• oil-based paint

• lacquer

• flammable gases

• energized electrical equipment

• magnesium

• sodium

• potassium

• titanium

• zirconium

• other flammable metals

Fire Classes (cont.)Fire Classes (cont.)

K Cooking Media • Recently recognized by NFPA 10.

• Fires involving combustible vegetable or animal non-saturated cooking fats in commercial cooking equipment.

CLASS K FIRESCLASS K FIRES

Fire Extinguisher AnatomyFire Extinguisher Anatomy

DISCHARGE HOSE

DISCHARGE NOZZLE

DISCHARGE ORIFICE

DATA PLATE

CARRYINGHANDLE

PRESSURE GAUGE(not found on CO2

extinguishers)

DISCHARGE LEVER

DISCHARGE LOCKING PINAND SEAL

Fire Extinguisher TypesFire Extinguisher Types

• Class “A” fires only.

• 2.5 gal. water (up to 1 minute discharge time).

• Has pressure gauge to allow visual capacity check.

• 30-40 ft. maximum effective range.

• Can be started and stopped as necessary.

• Extinguishes by coolingcooling burning material below the ignition point.

PRESSURIZED WATERPRESSURIZED WATER

A Trash Wood Paper

B Liquids Grease

C Electrical Equipment

A Trash Wood Paper

B Liquids Grease

Fire Extinguisher Types (cont.)Fire Extinguisher Types (cont.)

• Class “B” or “C” fires.

• 2 ½ -10 lbs. of CO2 gas (8-30 seconds discharge time).

• Has NONO pressure gauge--capacity verified by weight.

• Extinguishes by smotheringsmothering burning materials.

• Effectiveness decreasesdecreases as temperature of burning material increases.

CARBON DIOXIDE (COCARBON DIOXIDE (CO22))

A Trash Wood Paper

B Liquids Grease

A Trash Wood Paper

B Liquids Grease

• Class “A”, “B”, or “C” fires.

• 2.5-20 lb. dry chemical (ammonium phosphate) pressurized by nitrogen gas (8-25 seconds discharge time).

MULTIPURPOSE DRY CHEMICALMULTIPURPOSE DRY CHEMICAL

A Trash Wood Paper

B Liquids Grease

A Trash Wood Paper

B Liquids Grease

• Class “A”, “B”, or “C” fires (smaller sizes ineffective against Class “A”).

• 9-17 lb. Halon 1211 (pressurized liquid) released as vapor (8-18 seconds discharge time).

• 9-16 ft. maximum effective range.• Works best in confined area--ideal

for electronics fire due to lack of residue.

• Fumes toxic if inhaled.

HALONHALON

A Trash Wood Paper

B Liquids Grease

A Trash Wood Paper

B Liquids Grease

• Class “D” combustible metal fires only.

• 30 lb. pressurized dry powder optimized for specific combustible metal (also available in bulk containers for hand scooping onto fire to extinguish).

• To activate, must first open nitrogen cylinder on back to pressurize body.

COMBUSTIBLE METALCOMBUSTIBLE METAL

COMBUSTIBLE

METALS

• Class “A”, “B”,“C”, and “K” fires.

• 1.5 gal. of stored pressure PRX wet chemical extinguishing agent (40 sec. discharge time).

• On Class “K” fires, don’t use until afterafter fixed extinguishing system has activated.

• Extinguishes by coolingcooling and forming foam blanket to prevent reignition.

WET CHEMICALWET CHEMICAL

A Trash Wood PaperA Trash Wood Paper

C Electrical EquipmentC Electrical Equipment

K Cooking MediaK Cooking Media

Fire Extinguisher SummaryFire Extinguisher SummaryEXTINGUISHER TYPE WORKS BY EFFECTIVE AGAINST

PRESSURIZED WATER

CARBON DIOXIDE

MULTIPURPOSE DRY CHEMICAL

COMBUSTIBLE METAL

COOLING

SMOTHERING

WET CHEMICALCOOLING/

SMOTHERING

Fire Emergency ResponseFire Emergency Response

R RRescueescue

AAlarmlarm

CContainontain

EExtinguishxtinguish

Firefighting Decision CriteriaFirefighting Decision Criteria

• KnowKnow locations of extinguishers in your area and how to use them.• AlwaysAlways sound the alarm

regardlessregardless of fire size.• AvoidAvoid smoky conditions.

Decision TreeDecision Tree

• Don’tDon’t attempt to fight unless:– Alarm is sounded. – Area is being evacuated.– Someone has called for help.– Fire is small and contained.– You have safe egress route (can

be reached without exposure to fire).

– Available extinguishers are rated for size and type of fire.

• If in doubt, evacuate!evacuate!

Fighting the FireFighting the Fire

SSweep side to sideweep side to side

AAim low at the im low at the base of flamesbase of flames

SSqueeze thequeeze thehandlehandle

PPull the pinull the pinP

Fire HazardsFire Hazards

•Questions????

Fire Extinguisher Training D. Objectives Understand the combustion process and different fire...

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