Fire Extinguisher Training

Fire Extinguisher Training. Presented by: Nueces County Risk Management. The Fire Triangle. The Fire Triangle is a simple model used to understand the ingredients necessary for most fires. Triangle illustrates a fire requires three elements: Heat - to reach ignition temperature

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Fire Extinguisher Training

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Fire Extinguisher Training Presented by: Nueces County Risk Management
The Fire Triangle • The Fire Triangle is a simple model used to understand the ingredients necessary for most fires. • Triangle illustrates a fire requires three elements: Heat - to reach ignition temperature Fuel - or combustible material to feed the fire Oxygen - to sustain combustion Together, they produce the Chemical Reactionthat is Fire. • The fire is prevented or extinguished by removing anyone of the three elements. Keep fuel and ignition sources separate. • A fire naturally occurs when the elements are combined in the right mixture.
Fuel Classifications • Fires are classified according to the type of fire that is burning. Basically what type of material is on fire, i.e. paper, grease, electrical equipment etc. • It’s very important to understand the four different fire or fuel source classifications. Understanding this will allow you to correctly use the right fire extinguisher. • If you were to use the wrong type of fire extinguisher on the wrong class of fire, you may or may not be able to control or even extinguish the fire.
Fuel Classifications ATrash Wood Paper BLiquids Grease • wood • cloth • paper • rubber • many plastics • gasoline • oil • grease • tar • oil-based paint • flammable gases CElectrical Equipment K Cooking Media • vegetable oil • animal oil • fats • cooking equipment • energized electrical equipment • computer • TV • radio K
Fuel Classifications • Most fire extinguishers will have a picture label telling you which types of fires the extinguisher is designed to fight. • For example, a simple water extinguisher might have a label like this: Which means it should only be used for Class A fires.
Types of Fire Extinguishers • Different types of fire extinguishers are designed to fight different classes of fires. • The three most common types of fire extinguishers are: • Water (Class A) • Carbon Dioxide (CO2) (Class BC) • Dry Chemical (Class ABC, BC, DC) ** Wet Chemical (Class K)
Types of Fire Extinguishers PRESSURIZED WATER • Class “A” fires only. • 2.5 gal. water at 150-175 psi (up to 1 minute discharge time). • Has pressure gauge to allow visual capacity check. • 30-40 ft. maximum effective range. • Extinguishes by cooling burning material below the ignition point. • Taking away the heat element from the fire.
Types of Fire Extinguishers CARBON DIOXIDE (CO2) • Class “B” or “C” fires. • 2.5-100 lb. of CO2 gas at 150-200 psi (8-30 seconds discharge time). • Has NO pressure gauge--capacity verified by weight. • 3-8 ft. maximum effective range. • Extinguishes by smothering burning materials. Displaces oxygen. • Effectiveness decreases as temperature of burning material increases.
Types of Fire Extinguishers MULITPURPOSE DRY CHEMICAL • Class “A”, “B”, or “C” fires. On campus mostly Class ABC. • 2.5-20 lb. dry chemical (ammonium phosphate) pressurized to 50-200 psi by nitrogen gas (8-25 seconds discharge time). • Has pressure gauge to allow visual capacity check. • 5-20 ft. maximum effective range. • Extinguishes by smotheringburning materials. This separates the fuel from the oxygen in the air.
Types of Fire Extinguishers WET CHEMICAL K Cooking Media • Class “K” fires. • 1.5 gal. of stored pressure PRX wet chemical extinguishing agent (40 sec. discharge time). • 10-12 ft. maximum effective • range. • Extinguishes by cooling and forming a foam blanket to prevent the fire from reigniting.
Fire Extinguisher Anatomy PRESSURE GAUGE (not found on CO2 extinguishers) DISCHARGE LEVER CARRYING HANDLE DISCHARGE LOCKING PIN AND SEAL DISCHARGE HOSE DATA PLATE DISCHARGE NOZZLE BODY DISCHARGE ORIFICE
How to Use a Fire Extinguisher Remember this easy acronym when using an extinguisher - P.A.S.S. • Pull the pin. • Aim the nozzle. • Squeeze the handle. • Sweep side to side at the base of the fire.
How to Use a Fire Extinguisher • Pull the Pin… • This will allow you to discharge the fire extinguisher. The pin prevents the fire extinguisher from being accidentally discharged by squeezing the handle.
How to Use a Fire Extinguisher • Aim at the base of the fire. • Hit the fuel. If you aim at the flames the extinguishing agent will fly right through without stopping the fire.
How to Use a Fire Extinguisher • Squeeze the top handle. • Squeezing the handle opens a valve that releases the pressurized extinguishing agent from the fire extinguisher.
How to Use a Fire Extinguisher • Sweep from side to side. (until the fire is completely out) • Start using the fire extinguisher from a safe distance (6-8 feet) then slowly move forward if possible. • Once the fire is out, keep an eye on the area in case it reignites.
Guidelines for Fighting Fires Fires can be very dangerous and you should always be certain that you will not endanger yourself or others when attempting to put out a fire. For this reason, when a fire is discovered… 1. Assist any person in immediate danger to safety, if it can be accomplished without risk to yourself. Don’t put yourself in danger too. 2. Call 911 or activate the building fire alarm. The fire alarm will notify the fire department and other building occupants. If the fire is small (and Only after having done these 2 things), you may attempt to use an extinguisher to put it out.
Guidelines for Fighting Fires Before deciding to fight the fire, keep these things in mind: • Know what is burning! If you don’t know what’s burning, you won’t know what kind of fire extinguisher to use • Even if you have an ABC fire extinguisher, there may be something in the fire that is going to explode or produce toxic fumes. Chances are you will know what’s burning, or at least have a pretty good idea, but if you don’t, let the fire department handle it. • Is the fire spreadingrapidly beyond the point where it started? The time to use a fire extinguisher is at the beginning stages of the fire • If the fire is already spreading quickly, it is best to simply evacuate the building. As you evacuate the building, close the door (if there is one) behind you as you leave. This will help to slow down the spread of smoke and fire.
Guidelines for Fighting Fires • The final rule is to always position yourself with an exit or means of escape at your back before you attempt to use a fire extinguisher to put out a fire. • In case the extinguisher malfunctions, or something unexpected happens, you need to be able to get out quickly. You don’t want to become trapped.

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