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Application of Portable Fire Extinguishers
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  1. Application of Portable Fire Extinguishers Maryland Fire and Rescue Institute

  2. Application of Portable Fire Extinguishers OBJECTIVE (SPO): Given a selection of portable extinguishers, full personal protective equipment, and a controlled instructional environment, the student will be able to demonstrate the proper techniques of inspecting, selecting, and using portable extinguishers on Class A, B, and C fires, so that the correct extinguisher is used for the class of fire, the fire is extinguished completely, and safe operations are practiced. 1.1

  3. Application of Portable Fire Extinguishers • Overview: • Purpose of Portable Fire Extinguishers • NFPA Classification and Characteristics of Fuels • Types of Agents • Ratings of Extinguishers • Types of Extinguishers • Limitations of Extinguishers • Care and Maintenance • General Rules • Practical Use of Fire Extinguishers 1.2

  4. Why Are Portable Fire Extinguishers Used? CHEMICAL FOAM CO APW DRY 2 • Quick blitz or knockdown under certain conditions or circumstances (initial attack). • Mobile conveyances fires • Trash can fires • Electrical fires • Small flammable liquid fires • Industrial shop fires 1.3

  5. A Word of Caution and Prudence In Lesson 4-1 you learned about PPE requirements appropriate for a specific incident. In this Lesson NOTHING HAS CHANGED!! Wear your and when warranted. PPE Oxygen Fuel Source Heat Chemical Reaction Danger Hazards Risks SCBA DON’T FOLLOW THE PACK - FOLLOW YOUR TRAINING! 1.4

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  12. Monammonium Phosphate Multipurpose Dry Chemical Fire Extinguisher Forms a Crust on Class A Fuels Is Not Compatible with B:C Dry Chemical EXTINGUISHER A:B:C Rated Forms Emulsion in Class B Fuels SUPER Is Corrosive to Aircraft Parts Corrodes Electrical Equipment 1.5

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  14. Halogenated Hydrocarbons HALON Chemically reacts with flame to interrupt the chain reaction. It is a chemical compound that contains carbon + one or more elements from the series: Fluorine, Chlorine, Bromine, Iodine, and Astatine. HALON 1211 BROMOCHLORODIFLUROMETHANE HALON 1301 BROMOTRIFLUOROMETHANE HALOGEN 1.6

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  19. CLASS A CLASS B CLASS C CLASS D Number(s) Rating Indicates Relative Effectiveness of the Extinguisher and Performance Capability Based on 1¼ gallons of water 1A - 40A (range) 2A = 2½ gallons of water Based on square foot area of flammable liquid surface 1B - 640B (range) 20B = 20 square feet of surface area No numerical rating - only letter rated No numerical rating - cannot be given a multipurpose rating for use on other classes of fire 1.7

  20. Limitations of Extinguishers • Have limited discharge distances • Carry limited amount of agent • May be only partially effective • Limited discharge time • Must be maintained • Expensive to use 1.8

  21. Care and Maintenance Mandated by Fire Prevention Code and Standard Article 38A MD Fire Prevention Code NFPA 10, Standard for Portable Fire Extinguishers Conduct Maintenance • Check annually • Follow manufacturer’s recommendations • Perform a hydrostatic test • Take it out of service if damaged • Note any evidence of impairment • Record date of inspection or testing 1.9

  22. GENERAL RULES PRACTICE - PRACTICE - PRACTICE Select proper extinguisher Back away after extinguishment Apply from upwind position Use compatible agents Work systematically Work in pairs Know application techniques Apply at proper range Wear PPE/SCBA when necessary 1.10

  23. Practical Use of Fire Extinguishers Spend the final hour practicing during structured evolutions. Follow steps and procedures outlined in IFSTA Essentials of Fire Fighting on pages 140-144. 1.11

  24. Application of Portable Fire Extinguishers OBJECTIVE (SPO): Given a selection of portable extinguishment, full personal protective equipment, and a controlled instructional environment, the student will be able to demonstrate the proper techniques of inspecting, selecting, and using portable extinguishers on Class A, B, and C fires, so that the correct extinguisher is used for the class of fire, the fire is extinguished completely, and safe operations are practiced. 1.12

  25. Application of Portable Fire Extinguishers • Review: • Purpose of Portable Fire Extinguishers • NFPA Classification and Characteristics of Fuels • Types of Agents • Ratings of Extinguishers • Types of Extinguishers • Limitations of Extinguishers • Care and Maintenance • General Rules • Practical Use of Fire Extinguishers 1.13