Fire Hazard

• Fire - the process of rapid oxidation of any material; results in burning
• Fire Triangle - a model that shows the 3 essential components that when present together can start a fire.

  
• Fuel - source or combustible material; comes in different forms (solid, liquid, gas)
• Heat - needed to start and continue the combustion process. Air ignited by a spark/flame.

  Ignition of heat and fuel = combustion
• Oxygen - constitutes to 21% of the air around us.

  Flammability depends on the ratio of oxygen and fuel
• Causes of burns

  Man-made

  Natural
• Natural causes of fire

  • Lightning
  • Volcanic activities
• Man-made causes of fire

  • Electrical wirings
  • Unattended ignition sources
  • A lighted candle
  • Cigarettes
  • Chemicals at home
  • Gasoline leaks from vehicles
• Classification of Burns

  Burns - tissue injuries caused by heat, electricity radiation/chemicals that causes pain, swelling, blistering, scarring, and death
• Layers of the skin

  • Epidermis - outer layer
  • Dermis - middle layer
  • Hypodermis - also called subcutaneous tissue
• First Degree Burns

  • Affects the epidermis
  • Damage is slight and manageable
• Second degree burn

  • Depth of burn reached the dermis
  • Severity part of the skin may not function properly
  • Blisters and forming of fluid beneath the skin
• Third degree burn

  • Epidermis, dermis & underlying fat tissues are damaged
  • Most serious burn = muscle & bones are affected
  • Loss function of skin, nerve cells die
  • Victims may no longer feel anything
  • Burnt area may appear white/charred