Fire Hazard

• Ignition Stage/Incipient


  Its beginning stage
• Incipient fire


  • Flames are small and aren't widespread
  • Smoke allows visibility in the room
  • The heat emitted from the flame is low (in comparison with later stages)
• Growth Stage


  The growth phases are characterized by the following indicators:
• Growth Stage


  • There are sufficient oxygen and fuel to support the ongoing growth of the flame
  • A defined layer of smoke above the flame
  • The temperature in the room increases
  • Condensation disappears from windows
  • Brown stains on window glaze may appear
  • Cracks in windows
• Fully-Developed Stage


  Out of all the stages of fire growth, this phase is where energy release is at its greatest. The temperature will be at its highest point (generally somewhere between 700°-1200°C).
• Fully-Developed Stage


  • Darkened or black smoke
  • Dense smoke
  • Substantial heat
  • Blackened window glazing
  • Visible exterior flames
  • Flames obscured by smoke
• DECAY STAGE


  The final stages of fire.
• DECAY STAGE


  1. The fire starts to run out of fuel or oxygen

  2. Fires can be forced into the decay stage by reducing oxygen supply with firefighting equipment

  3. Limiting the flame to one compartment (or area) will help to contain the available fuel and growth of the fire

  4. It is critical during this phase to limit the fire's access to combustible material and oxygen

  5. Even if a fire appears to be out, there is a chance of reignition when the right materials are available