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Published byWilfred Evans Modified over 9 years ago
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Ag 1 Safety: Unit 2
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Reduce hazards in ag mechanics State the three conditions necessary for combustion Match appropriate types of fire extinguishers to each class of fire
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Losses from fire can be prevented through attention and knowledge of how fire works
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To produce fire, 3 components are needed Fuel: any combustible material that will burn Heat: the energy that causes temperture to rise Oxygen: atmospheric gas that must be present for fuels to burn
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Store fuels in approved containers Store fuels away from other materials that burn easily Store materials in areas that are cooler than their combustion temperture Put out fires by removing one or more elements in the fire triangle
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Classification is based on how to safely and cheaply extinguish each type of material Water is the cheapest but not always the safest 4 classes AA BB CC DD
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Ordinary combustibles Wood, paper, trash Does not include any time in the presence of electricity or any type of liquid
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Flammable liquids Fuels, greases, paints and other liquids not in the presence of electricity
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Electrical equipment
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Combustible metals Difficult to extinquish Only a class D extinquish will work
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A proper fire extinguisher can put out a fire with in seconds The key is using the proper extinguisher, using it immediately and in the proper way
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Water with pump or gas pressure—Class A fires Carbon dioxide gas (CO2)—Class B and C Dry Chemical—Class A,B,C Blanket—used for smothering fires on humans or animals
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A B C D
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Place Where fires are likely to occur In a clean, dry location near exits Within easy reach Should be hung so the top is not more than 3 ½ to 5 feet above the floor, the bottom should be at least 4” off the floor Should be in a position to remove quickly
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1. Hold upright, pull ring pin 2. Start back 10 feet, aim at the base of the fire 3. Squeeze lever, sweep side to side http://www.youtube.com/watch?v=uGIleFf KGR4 http://www.youtube.com/watch?v=uGIleFf KGR4
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