what are the four key stages of fire?
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Compartment fire development can be described as being comprised of four stages: incipient, growth, fully developed and decay (see Figure 1). Flashover is not a stage of development, but simply a rapid transition between the growth and fully developed stages. (see Figures 1 and 2.)
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The four stages of conflict are the latent stage, perceived stage, felt stage and manifest stage. The stage that describes what happens after the conflict is over is called the aftermath stage.
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['Single stage: If all residents are deemed independent of help, all residents can evacuate immediately with minimal assistance.', 'Progressive horizontal: Occasions when most residents are dependent on staff assistance for a successful evacuation.']
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The four phases of disaster: 1) mitigation; 2) preparedness; 3) response; and 4) recovery. The model helps frame issues related to disaster preparedness as well as economic and business recovery after a disaster.
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['Stage I: Play, Imitation and Education. Birth – Infancy – Childhood – Adolescence.', 'Stage II: Self-Discovery, Enterprise & Adventurousness. Adolescence – Early Adulthood – Adulthood.', 'Stage III: Dedication, Contemplation & Benevolence. ... ', 'Stage IV: Retirement, Wisdom & Renunciation.']
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Fire Prevention. A fire needs three elements - heat, oxygen and fuel. Without heat, oxygen and fuel a fire will not start or spread. A key strategy to prevent fire is to remove one or more of heat, oxygen or fuel.
169876
Fire is a chemical process requiring three things to occur: oxygen, fuel and an ignition source. Without one of these factors, a fire can't start or will burn itself out. ... When heat can't release faster than it's created, combustion occurs. This is what creates the flame and heat we call fire.
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['8 Foul Play.', '7 Eruption & Water Spout.', '6 Destiny Bond.', '5 Boomburst.', '4 Dragon Ascent.', '3 Geomancy.', '2 Explosion.', '1 Scald.']
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['Fires in cars and trucks after road accidents.', 'Careless people who, for example, drop their cigarette butts or let sparks and fire escape from their campfires.', 'Lightning strikes set fire to grass and trees.', 'Fires lit for burning off grass that get out of control.']
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['Complete combustion reacts oxygen with a fuel to produce carbon dioxide and water. ... ', 'Combustion is an exothermic reaction that releases energy in the forms of heat and light. ... ', 'Incomplete combustion is also a reaction between oxygen and fuel but the products are carbon monoxide, water and carbon.']
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These stages are incipient, growth, fully developed, and decay. The following is a brief overview of each stage. Incipient – This first stage begins when heat, oxygen and a fuel source combine and have a chemical reaction resulting in fire.
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The fire triangle or combustion triangle is a simple model for understanding the necessary ingredients for most fires. The triangle illustrates the three elements a fire needs to ignite: heat, fuel, and an oxidizing agent (usually oxygen).
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These common elements allow you to prepare for and protect yourself and your animals from disaster. Emergency managers think of disasters as recurring events with four phases: Mitigation, Preparedness, Response, and Recovery. The following diagram illustrates the relationship of the four phases of emergency management.
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['Phase 1: Hemostasis Phase.', 'Phase 2: Defensive/Inflammatory Phase.', 'Phase 3: Proliferative Phase.', 'Phase 4: Maturation Phase.']
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A fire needs three things: fuel, oxygen and heat. ... Sometimes, fires occur naturally, ignited by heat from the sun or a lightning strike. However, most wildfires are because of human carelessness such as arson, campfires, discarding lit cigarettes, not burning debris properly, playing with matches or fireworks.
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Fire Prevention. A fire needs three elements - heat, oxygen and fuel.
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['Flammable gases.', 'Flammable aerosols.', 'Oxidizing gases.', 'Gases under pressure.', 'Flammable liquids.', 'Flammable solids.', 'Self-reactive substances and mixtures.', 'Pyrophoric liquids.']