W4

• Fire prevention and control system

  Passive: building, structures, etc.

  Active: portable extyingshers, hose, etc.
• What to do in case of fire

  1. Once you are out, stay out
  2. If you are stuck in a room, break the window open to escape and ensure your safety
  3. Do not touch the door handle if it's warm put a wet cloth under
  4. If inside the building, refrain from sing the elevator and use the stairs instead
  5. stop, drop, and roll over if your cloth catch on fire
• Types of fire extinguisher

  • Water and foam
  • Carbon dioxide
  • Dry chemical
  • Wet chemical
  • Clean agent
  • Dry powder
  • Water Mist
• Water and foam


  • Isolates the heat and blocks the oxygen to prevent it from interacting with other elements in the fire tetrahedron
  • Class A
• Carbon dioxide


  • Reduces the heat due to very cold emission, isolates the oxygen from fuel in the fire tetrahedron
  • Class B and C
• Dry chemical


  • Puts out fire by breaking the continuity of the chemical reaction
  • Class A, B, and C
• Wet chemical


  • Removes the heat from fire tetrahedron, prevent the oxygen and fuel from interacting
  • Class K and A
• Clean agent

  • Aka halogenated extinguishers, contain halon agents and halocarbon agents
  • Class B and C
• Dry powder


  • Removes the heat in the fire tetrahedron, prevent the oxygen and fuel from interacting
  • Class D
• Water Mist


  • Isolates the heat from other elements in the fire tetrahedron
  • Class A and C
• When to fight a fire:

  • When your instinct tells you it's okay
  • when the fire is small and contained
  • when you have a means of escape
  • when you are safe from toxic smoke