A fire needs oxygen, fuel, and a source of ignition. With out all three you do not have a fire.
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Transcript of A fire needs oxygen, fuel, and a source of ignition. With out all three you do not have a fire.
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A fire needs oxygen, fuel, and a source of ignition.
With out all three you do not have a fire.
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Four classes of fires
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Class A
• fires consists of ordinary combustible materials such as paper, wood, cardboard, and most plastics.
• These types of fires can be extinguished with plain water.
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Class B
• Class-B fires consist of combustible liquids like gasoline, oil, grease, or diesel.
• Water should not be used on this type of fire because the combustible material are lighter than water causing them to rise above the water and spread.
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Class C
• Class-C fires involve electrical equipment e.g. computers, appliances, and electrical wiring behind the wall or in the car.
• Water should not be used because of the risk of electrical shock.
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Class D
• Class-D fires are a result of combustible metals like magnesium, titanium, potassium and sodium.
• A special foam type of fire extinguisher is needed for this type of fire.
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These fire extinguishers use a foam agent to extinguish Class-D fires
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The dry chemical fire extinguisher
• The most common fire extinguisher used in most buildings is the ABC multipurpose dry chemical fire extinguisher.
• It is filled with monoammonium phosphate, a yellow powder and pressurized with nitrogen or carbon dioxide.
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Inspect the fire extinguishers in you shop monthly
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•Check to make sure the pin is in place•The pin prevents the fire extinguisher from being accidently discharged •green plastic tag is used to keep the pin in place
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• Inspect the discharge hose for tears, kinks, and damage.
• Inspect the inside of the hose for obstructions and to ensure it is attached properly to the fire extinguisher.
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Inspect the fire extinguisher gage for proper pressure.
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Which fire extinguisher would you use?
A B
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What is wrong with this picture?
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It’s obstructed and hard to get to.The longer it takes to get to the
fire extinguisher the longer you are going to be exposed to the fire and that can be a matter of life or death!
That’s right!
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It is recommended that you tilt the extinguisher up side down or shake it several times each time you inspect
the fire extinguisher to loosen the power.
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Initial the back of the inspection tag if it passes the inspection.
Have the extinguisher service if it fails the inspection
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STEPS TO REMEMBER FOR USING A FIRE EXTINGUISHER.
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PASS
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P• Pull the Pin at the top of the extinguisher. • The pin releases a locking mechanism and will
allow you to discharge the extinguisher.
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A
• Aim at the base of the fire, not the flames. • This is important - in order to put out the fire,
you must extinguish the fuel. Note: If possible, move up wind of the fire.
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S
• Squeeze the lever slowly. This will release the extinguishing agent in the extinguisher. If the handle is released, the discharge will stop.
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S• Sweep from side to side. Using a sweeping
motion, move the fire extinguisher back and forth until the fire is completely out.
• Operate the extinguisher from a safe distance, several feet away, and then move towards the fire once it starts to diminish.
• Be sure to read the instructions on your fire extinguisher - different fire extinguishers recommend operating them from different distances. Remember: Aim at the base of the fire, not at the flames!!!!
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Sweep side to side
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These men are using a dry chemical fire extinguisher to put out a fire made of diesel and gasoline mixture.
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Note:
• Fire extinguishers last only a few seconds so make the best of it.
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References
• http://www.fire-extinguisher101.com• http://ehs.sc.edu/training/Fire/01_triangle.ht
m• http://firstaid.about.com/od/hazardousmateri
als/ht/06_greasefire.htm
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