GUIDE TO CLASSES OF FIRES AND METHODS OF EXTINGUISHING

• Class A Fire
  Wood, paper, textiles and other ordinary combustible materials.

  To extinguish, use:

  • Pressurized water
    
  • ABC Dry Chemical (Multi-Purpose)

• Class B Fire
  Flammable liquids: oils, solvents, grease, paint, etc.

  To extinguish, use:

  • BC Dry Chemical, regular
    
  • Carbon Dioxide
    
  • Halon 1211
    
  • Multi-purpose dry chemical

• Class C Fire
  Live or energized electrical or electronic equipment

  To extinguish, use:

  • Carbon Dioxide
    
  • Halon 1211
    
  • BC Dry Chemical, regular. This is effective, but will destroy electrical gear.
    
  • Multi-purpose dry chemical. This is effective, but will destroy electronic gear.

• Class D Fire
  Metals: Magnesium, Aluminum, Sodium, Potassium, Zirconium, Titanium, etc.

  To extinguish, use:

  • Sand
    
  • Special metal extinguishers
    
  • Special metal powders
    
  • The ordinary fire extinguishers found in the building should not be used on burning metals because a violent reaction may result.