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Understanding Fire Extinguishers and Their Uses

May 5, 2025

Types of Fire Extinguishers and Their Uses

Introduction

  • Presenter: Laura
  • Topic: Types of fire extinguishers, their functions, and appropriate usage
  • Importance: Essential tools for controlling and extinguishing fires

Classes of Fires in the U.S. (2023)

  1. Class A: Combustible materials
  2. Class B: Flammable gases
  3. Class C: Electrical equipment
  4. Class D: Burning metals
  5. Class K: Cooking oils and fats

Types of Fire Extinguishers

Water Fire Extinguishers

  • Use: Class A fires (ordinary combustibles like wood, paper, textiles, plastics)
  • Function: Cools fire to reduce temperature below ignition point
  • Limitations: Not for use on flammable liquids, electrical equipment, or cooking oils
  • Availability: Available on firealarm.com

Foam Fire Extinguishers

  • Use: Class A and B fires (ordinary combustibles and flammable gases like gasoline, oils)
  • Function: Smothers fire to prevent reignition
  • Limitations: Not for electrical fires
  • Availability: Available on firealarm.com

Carbon Dioxide (CO2) Fire Extinguishers

  • Use: Class B and C fires (flammable gases and electrical equipment)
  • Function: Displaces oxygen to suffocate fire; non-conductive, leaves no residue
  • Availability: Available on firealarm.com

Dry Chemical Powder Fire Extinguishers

  • Use: Class A, B, and C fires
  • Function: Interrupts chemical reaction of fire with dry chemical powder
  • Chemicals Used: Monoammonium phosphate or sodium bicarbonate
  • Availability: Available on firealarm.com

Wet Chemical Fire Extinguishers

  • Use: Class A and K fires (kitchen fires involving cooking oils and fats)
  • Function: Reacts with burning oil to form a cooling, fire-suppressing barrier
  • Availability: Available on firealarm.com

Clean Agent Fire Extinguishers

  • Use: Class B and C fires
  • Function: Non-conductive gases like Halon extinguish fire without damage
  • Areas of Use: Sensitive equipment areas
  • Availability: Available on firealarm.com

Additional Information

  • Fire extinguishers have symbols to indicate suitable fire classes
  • Numerical ratings provide relative extinguishing capabilities
  • Proper use is crucial to avoid worsening the situation or adding risks
  • Regular maintenance and inspections are essential for readiness

Brands Available

  • Amrex, First Alert, Badger, and more

Contact Information

Conclusion

  • Encourage viewers to subscribe and like the video for updates on fire safety
  • Firealarm.com as a trusted source for fire and life safety