Fairfax County Fire and Rescue Department 1 FIRE EXTINGUISHERS

Delmar; Firefighter’s Handbook-Chapter 2 IFSTA Essentials 5th Edition – Chapter 6 NFPA 10; Portable Fire Extinguishers 2

Evaluate if a fire should be attempted to be put out with an extinguisher. Calculate a fire extinguisher’s potential fire fighting capability. Describe fire extinguisher classes and what type of fire it is designed to extinguish. Operate a fire extinguisher properly. 3

Fairfax County Fire and Rescue Department How Is Fire Extinguished 1. Remove fuel – burn house to the ground or remove logs from fireplace 2. Remove Oxygen 3. Remove heat 4. Break Chain Reaction 4

Fairfax County Fire and Rescue Department Can this be put out with a fire extinguisher? 5

Fairfax County Fire and Rescue Department 6 Example of fire in Free Burning Phase.

Fairfax County Fire and Rescue Department 7 Example of a fire in a later stage.

Fairfax County Fire and Rescue Department What You Must Know Before Using a Portable Fire Extinguisher Location of the fire Extent Risk/benefit Which fire extinguisher Location of exit 8

Fairfax County Fire and Rescue Department Not An Extinguisher Fire  Too Big  Too wide an area  Location of exit or unknown exit 9

Fairfax County Fire and Rescue Department 10 Can this put out with an extinguisher?

Fairfax County Fire and Rescue Department Fire Extinguisher Inspections  Check for Location  Check for Inspection Date  Check for Hydrostatic Date  Check Nozzle for Obstructions  Check for Damage  Check for Presence of Pin/Seal  Check Gauge  Check Condition of Hose 11

Fairfax County Fire and Rescue Department 12 Obsolete Extinguishers  Soda acid.  Chemical foam (except film-forming.)  Vaporizing liquids.  Cartridge-operated water or loaded stream.  Copper or brass extinguishers. Never Operate Obsolete Extinguishers.

Fairfax County Fire and Rescue Department Additional Obsolete Extinguishers  Pressurized water extinguishers manufactured prior to 1971  Stored pressure extinguishers manufactured prior to 1955 (Including common CO 2 extinguishers).  Class B extinguishers with a 4B, 6B, 8B, 12B or 16B rating.  Extinguishers that must be inverted to operate.  Stored pressure water extinguishers with fiberglass shell manufactured prior to  Stored pressure dry chemical extinguishers (common multipurpose ABC extinguishers) manufactured prior to October  Fire extinguishers that can not be serviced in accordance with the manufacturer’s maintenance manual. 13

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Fairfax County Fire and Rescue Department Class A Extinguisher Ratings  Extinguisher Rating of 1A – 40A  A rating of 1A has the same fire fighting capability as 1.25 gallons of water 15

Fairfax County Fire and Rescue Department Math Quiz  How many gallons would a 20 A rated extinguisher be equivalent? 16

Fairfax County Fire and Rescue Department Class B Extinguisher Ratings  Extinguisher Rating of  A rating of 1B has the fire fighting capability for a non-expert to extinguish 1 square foot of flammable liquids  The rating assumes that a non-expert has 40% capability of an expert 17

Fairfax County Fire and Rescue Department Math Quiz How big of a class B fire should a non expert be able to extinguish with an extinguisher rated at 20 B? What about an expert? 18

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Fairfax County Fire and Rescue Department ORDINARY COMBUSTIBLES-Class A 20 A Numerical Rating Based on Effectiveness

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Fairfax County Fire and Rescue Department FLAMMABLE LIQUIDS-Class B 22 B Numerical Rating Based on Effectiveness

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Fairfax County Fire and Rescue Department ELECTRICAL EQUIPMENT-Class C 27 C No Numerical Rating-only a Certification

Fairfax County Fire and Rescue Department COMBUSTIBLE METALS-Class D 28 No Numerical Rating-only a Certification

Fairfax County Fire and Rescue Department KITCHEN MEDIA- Class K 29 No Numerical Rating-only a Certification K * Artist’s Rendition

Fairfax County Fire and Rescue Department 30 Size 6 Liter or 2 1/2 Gallon Application Class A Limited on Class B Class C and Class K Stored Pressure Operating Principle Kitchen Wet-Chemical

Fairfax County Fire and Rescue Department 31 Effects of using wrong agent

32 Acetone Wood Cooking oil Propane Magnesium Car Couch TV Trash can

Fairfax County Fire and Rescue Department 33 PASSPASS Pull Aim Squeeze Sweep

Fairfax County Fire and Rescue Department Demonstration/Practice  We will demo the skilled use of three types of fire extinguishers Water can CO2 Dry Chemical  Each of you will get to practice the use of three different types of extinguishers 34

Evaluate if a fire should be attempted to be put out with an extinguisher. Calculate a fire extinguisher’s potential fire fighting capability. Describe fire extinguisher classes and what type of fire it is designed to extinguish. Operate a fire extinguisher properly. 35

Take a 10 Minute Break and Report To The High Bay 36