DRRR L8

• Fire


  The combustion or burning of substances combined chemically with oxygen from the air and typically give off light and heat
• Fire triangle


  • Oxygen is needed to sustain combustion

  2. There must be fuel or combustible material

  3. Sufficient heat is needed to raise the material to its ignition temperature

  
• Fire tetrahedron


  • Oxygen is needed to sustain combustion

  2. There must be fuel or combustible material

  3. Sufficient heat is needed to raise the material to its ignition temperature

  4. A chemical chain reaction should take place in the material

  
• Stages of fire


  Ignition stage

  Growth

  Fully developed

  Decay (burnout)
• Fire


  The combustion or burning of substances combined chemically with oxygen from the air and typically give off light and heat
• Fire triangle


  • Oxygen is needed to sustain combustion

  2. There must be fuel or combustible material

  3. Sufficient heat is needed to raise the material to its ignition temperature

  
• Ignition stage


  Fuel and oxygen are exposed to heat, heat is transferred igniting more materials
• Fire tetrahedron


  • Oxygen is needed to sustain combustion

  2. There must be fuel or combustible material

  3. Sufficient heat is needed to raise the material to its ignition temperature

  4. A chemical chain reaction should take place in the material

  
• Growth


  Fire spreads, temperature reached its peak
• Fully developed


  Fire consumes all available fuel, temperature decreases
• Stages of fire

  Ignition stage

  Growth

  Fully developed

  Decay (burnout)
• Ignition stage


  Fuel and oxygen are exposed to heat, heat is transferred igniting more materials
• Decay (burnout)


  All of the available fuel is consumed, the fuel/oxygen is removed, the temperature is reduced by cooling, the number of molecules is reduced and the chain reaction is broken
• Growth


  Fire spreads, temperature reached its peak
• Classes of fire

  • Fire due to natural hazards

  Fire due to human-made conditions

  Fire due to mismanagement

  
• Fire due to natural hazards


  • Earthquake, Volcanic Eruption, Drought and high temperatures
• Fully developed


  Fire consumes all available fuel, temperature decreases
• Fire due to human-made conditions


  • Transportation accidents, chemical explosion, faulty electrical connections
• Fire due to mismanagement

  • Negligence, irresponsible handling of fire

  
• Bureau of Fire Protection (032) 254 - 8385 (Cebu City)
• Decay (burnout)


  All of the available fuel is consumed, the fuel/oxygen is removed, the temperature is reduced by cooling, the number of molecules is reduced and the chain reaction is broken
• Classes of fire


  • Fire due to natural hazards

  Fire due to human-made conditions

  Fire due to mismanagement

  
• Fire due to natural hazards


  • Earthquake, Volcanic Eruption, Drought and high temperatures
• Fire due to human-made conditions


  • Transportation accidents, chemical explosion, faulty electrical connections
• Fire due to mismanagement


  • Negligence, irresponsible handling of fire
• Bureau of Fire Protection (032) 254 - 8385 (Cebu City)