drrr

• Natural causes of fire

  • lightning
  • volcanic eruption
  • Spontaneous combustion
• Pyrophoric substances


  Ignite spontaneous in air or below 54°C or with in 5 minutes after getting into contact with air
• Pyrophoric substances


  • Iron sulfide
  • plutonium
  • uranium
  • dry fuel sawdust dried leaves and 1 grasses. hay, straw and othe types of grasses
• Human-made fires


  Products of human errors or machine failures
• House fire


  Fire incident that is generally caused by human and machine error
• Common causes of house fires


  • Cooking equipment
  • Heaters
  • Smoking in bedrooms
  • Candle
  • Curious children
  • Faulty wiring
  • Barbeques
  • Flammable liquids (ex. Petrol, kerosene or other methylated substances)
  • lightning (ex. Lamp shape & light fittings can build heat if they are very close to light bulbs)
• Fire triangle

  Used to identify the three elements required for fire: heat, fuel, oxygen
• Methods of suppressing fire

  • Starvation
  • Smothering
  • Cooling
• Four phases of fire

  • Ignition (Incipient) - fire is limited to the point of origin, mild
  • Developing (Surface fire) - the fire has moved from the point of origin and has begun to involve other fuels
  • Absolute Fire (Fire in depth in solid) - the fire is free. burning and consuming large amounts of fuel
  • Burning out decay - no more fuel, fire has consumed the available fuel or oxygen, and is shrinking in size