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Lecture Five Fire Protection

Lecture Five Fire Protection. Causes of Fires. Fuel. Fire. Heat. Oxygen. Fire Triad. Fire Hazards Defined. Conditions that favor the development or growth of fire. Mishandling fuel and heat is most common cause. Fire Hazards Defined. Spontaneous Combustion: Flashpoint.

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Lecture Five Fire Protection

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  1. Lecture FiveFire Protection

  2. Causes of Fires Fuel Fire Heat Oxygen Fire Triad

  3. Fire Hazards Defined • Conditions that favor the development or growth of fire. • Mishandling fuel and heat is most common cause.

  4. Fire Hazards Defined • Spontaneous Combustion: • Flashpoint

  5. Four Classes of Fires • A type fires involve ordinary combustibles such as wood, paper, cloth, and many plastics. A

  6. Four Classes of Fires • B type fires involve flamable or combustible liquids, greases, and gases. B

  7. Four Classes of Fires • C type fires involve energized electrical equipment. C

  8. Four Classes of Fires • D type fires involve combustible metals such as magnesium, titanium, zirconium, sodium, ans potassium. D

  9. Fires and Explosion Hazards • Gasoline: Flashpoint is -45 degrees Fahrenheit. Kerosene: Flashpoint is 100 degrees Fahrenheit. Carbon monoxide: Orderless and tasteless, and poisonous, is the product of incomplete combustion. In concentrations greater than 12% it will ignite when it contacts open flame.

  10. Preventing Fires and Explosions • Practice Good Housekeeping

  11. Preventing Fires and Explosions • Isolating the Fuel

  12. Preventing Fires and Explosions • Controlling Electrical Hazards

  13. Fire Fighting Substances • Water: Reduces temperature. • Sand: Suffocates. • Salt: Acts like sand.

  14. Fire Hoses • Must handled carefully. • Must be drained after use. • Should be unfolded and refolded 3 or 4 times each year. • Should be tested 1 time each year to 150 PSI.

  15. Portable Fire Extinguishers • Type A (water units): For normal combustibles only. • Type A,B (AFFF): For type A and B fires. • Type B,C (Co2): For use on B and C fires. Suffocation hazard. • Type ABC (Halon) • Dry Chemical (monoammonium phosphate)

  16. Portable Fire Extinguishers • Stored Pressure vs. Cartridge Units • Dry Powders (Class D Fires) Sand, Graphite, Sodium Chloride, Talc, and Soda Ash.

  17. Protecting Yourself • 1. Practice good house keeping. • 2. Don’t let the 4 conditions of the Fire Triad come together at the same time. • 3. Learn how and when to use fire fighting equipment. • 4. Never fight a fire you can’t handle.

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