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23 FIRE PREVENTION PLAN NWPCA Fire Code Compliance Manual for Outdoor Storage of Wood Pallets | Version 1.0 (December 2017) 7.0 Elements of a Fire Your FIRST response in a fire is to set off the alarm (if there is one) and then to CALL 911 Never assume that this is going to be done by someone else. Even for a small fire that has been controlled, 91 1 should be notified as the Fire Department would rather arrive after the fire has been controlled instead of after it is out of control. The second response is to leave the area if the fire is too large to handle; remembering that a fire can double i n size every 30 seconds! To deal with a small fire, know which class of fire it belongs (Type A, B, C or D). Classes are discussed further in the next section. Using the wrong type of extinguisher, or using one improperly, could result in additional property damage or injury. There are three essential elements of a fire which are known as the "Fire Triangle". Fuel – Fuel can be paper wood, oil, solvents, gas, chemicals, etc. Heat - Heat or an ignition source such as a lighted match, static electricity, or other flame. I n some situations internal combustion can cause a fire where there is no "spark". Oxygen - Oxygen helps a fire "breathe." Normally at least 15% of the surrounding air must be made up of oxygen in order for a fire to continue to burn. The greater the concentration of oxygen, the brighter the blaze, the more rapid the combustion. Chemical Chain Reaction - All previous elements must be present along with a chemical chain reaction for a Fire to occur. If any one of these elements is removed, the fire can no longer continue to burn. A fire can be extinguished by: ISOLATING Fuel control COOLING Temperature and heat SMOTHERING Control Oxygen control INTERRUPTING In certain types of fires this method can be used to stop a chemical chain reaction that is helping the fire to burn