Ag 1 Safety: Unit 2

 Reduce hazards in ag mechanics  State the three conditions necessary for combustion  Match appropriate types of fire extinguishers to each class of fire

 Losses from fire can be prevented through attention and knowledge of how fire works

 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

 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

 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 AA BB CC DD

 Ordinary combustibles  Wood, paper, trash  Does not include any time in the presence of electricity or any type of liquid

 Flammable liquids  Fuels, greases, paints and other liquids not in the presence of electricity

 Electrical equipment

 Combustible metals  Difficult to extinquish  Only a class D extinquish will work

 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

 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

A B C D

 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

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  KGR4 KGR4