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Pre-ignition – volatile materials in the fuel are vaporizedįlaming – the ignition temperature of the fuel is reached and combustion Pre-heating – temperature of the fuel is raised to the point where gases Or altering one or more sides of the triangle. In suppression of a wildfire, the objective is to stop combustion by removing Remove heat, oxygen or fuel and the fire goes out. The same principle is used in fighting wildfires. Of oxygen in the air but you removed the fuel. Take a pair of scissors and cut off the wick below the flame and remove theĪfter a short period when the rest of the wick that was left on the scissors is The burning candle, you had all the ingredients necessary for combustion heatįrom the match, fuel in the candle and oxygen from the air. The burning candle and no additional oxygen can get to the candle because of the This occurs because all of the oxygen inside the jar has been used up by
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After a short time, the candle will go out. It’s burning well, place the jar upside-down over the candle. One example of how the triangle can be broken can be done with a short There are various ways in which the fire triangle can be broken or altered. Young children should not attempt this exercise With this knowledge the fire fighter or the prescribed burner can do much to IncreaseĪny one or more of the elements, and the fire will increase in intensity. Remove any one of the three sides or elementsĪny one, and the fire will weaken. For the sake of simplicity we call this the “Fire Triangle.” It is obvious that these three elements must be present and satisfactorilyĬombined before combustion can occur and continue. The combustion process itself), the ignition of additional fuel will continue as With a continuous supply of heat (furnished by (ignition temperature) to start and continue the combustion process.
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Three things are required in proper combinationīefore ignition and combustion can take place- Heat, Oxygen and Fuel. Lightning, spontaneous combustion, hot ashes and arson. Railroad locomotives, sparks from brake shoes or “hot-box” on railroad cars. Wild land fires originate from such sources of heat as matches, embersįrom cigarettes, cigars or pipes, campfires, trash fires, exhaust sparks from Once started, fire produces its own heat. Heat is necessary to begin the combustion process. FrictionĬreates sufficient heat to ignite the phosphorus on the end of the match. The combustion process or “fire” is sometimes called “rapidįormation of rust on iron or the decay of dead wood in the forest, except that Prescribed fire is a complex and exacting process requiring knowledgeable and The suppression of wildfires is such a difficult task and why the use of Photosynthesis requires a large amount of heat which is furnished by theĪmount of heat that is produced in the burning process is the major reason that This process in known as “Combustion.” Combustion is a chain reaction chemically similar to photosynthesis in Pitch and other burnable elements found in the forest environment.
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There is a chemical combination of the oxygen in the air with woody material, Is one fire a roaring inferno while another barely creeps along? Fire is a chemical reaction in which energy in the form of heat is