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Fire Extinguishers An Introduction to Fire Extinguishers for Fairfax County DPWES.

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Presentation on theme: "Fire Extinguishers An Introduction to Fire Extinguishers for Fairfax County DPWES."— Presentation transcript:

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2 Fire Extinguishers An Introduction to Fire Extinguishers for Fairfax County DPWES

3 Legal Basis for this Training Occupational Safety and Health Administration (OSHA) O ccupational Safety and Health Standards 29 CFR Part 1910 Subpart L - Fire Protection Standard Portable fire extinguishers

4 (b)(1) Where the employer has implemented a written fire safety policy which requires the immediate and total evacuation of employees from the workplace …and which includes an emergency action plan and fire prevention plan…and when extinguishers are not available in the workplace, the employer is exempt from all requirements of this section unless a specific standard in Part 1910 requires that a portable fire extinguisher be provided.

5 (g)(1) Where the employer has provided portable fire extinguishers… the employer shall provide an educational program to familiarize employees with general principles of fire extinguisher use and the hazards involved with incipient stage fire fighting.

6 OBJECTIVES: After this training you should be able to: IDENTIFY 3 common classes of fires SELECT the proper type of extinguisher EVALUATE when it is safe to fight an early-stage fire, and; APPLY the P.A.S.S. method to operate a portable extinguisher.

7 UNTRAINED PEOPLE Cannot use a fire extinguisher safely because they are: UNABLE to evaluate a fire UNAWARE of DANGER due to... LACKING JUDGEMENT regarding : – Safe and correct use of, and – Limitations of portable extinguishers

8 WHY UNTRAINED PEOPLE Cant use a fire extinguisher safely (continued) : INEXPERIENCED Dont know about the proper type of extinguisher Dont know how to make a Fight or Flight analysis Unfamiliar with the P.A.S.S. method

9 COMMON FIRE CLASSIFICATIONS Ordinary combustibles P aper, wood, rubber, plastics and textiles. Flammable liquids Oil, gasoline, solvents Energized circuits Electrical equipment and computers

10 HOW THEY WORK: Works by cooling. Works by cooling. Numerical rating indicates amount of agent, duration, and range of discharge on test fires. Area of Class A fire which a non-expert can extinguish, with proper training Area of Class A fire which a non-expert can extinguish, with proper training – 1-A is equivalent on Class-A fire to five liters of water. – 2-A contains has twice as much extinguishing agent.

11 HOW THEY WORK: Works by blanketing the fuel. Works by blanketing the fuel. Interrupts chemical reaction at fuel surface. Interrupts chemical reaction at fuel surface. Class B ratings signify the area in square feet of flammable liquid fire a unit will extinguish when used, by a trained, non-expert. Class B ratings signify the area in square feet of flammable liquid fire a unit will extinguish when used, by a trained, non-expert.

12 HOW THEY WORK: Class C units have no numerical rating. A Class C rating doesnt imply any capacity. Only indicates that the extinguishing agent is non-conductive, safe on energized equipment. Only indicates that the extinguishing agent is non-conductive, safe on energized equipment. Works by displacing oxygen, smothering fire.

13 Portable Fire Extinguishers Can be CARRIED to a fire Weigh from 5 to 30 pounds NFPA Class and Rating – Arabic numerals according to efficiency - 4A extinguishes twice as much Class A fire as 2A

14 Portable Fire Extinguishers LIMITED IN: Capacity to 25 lbs. of extinguishing agent Range - Typically 3 to 15 feet Duration - Discharge their contents in only 5 to 30 seconds !

15 Extinguisher Common features Locking pin Carrying handle / operating lever Pressure gauge Label : –Type (Water, C02, Dry Chemical) –Classification (A, B, C) –NFPA capacity Rating –Instructions Discharge nozzle or horn

16 COMMON TYPES OF FIRE EXTINGUISHERS: WATER DRY CHEMICAL CO 2 and Halon

17 WATER Water + CO 2 propellant ONLY for Class firesONLY for Class fires –wood / paper, etc. Spreads burning liquids ! DANGERDANGER of electric shock if used on on live circuits !

18 DRY CHEMICAL MULTI-PURPOSE RATED Best for general use: Reduced risk of re-ignition A 10 lb. unit empties in 8-10 secs. –Effective range of 6 ft. to 15 ft. EitherOr

19 C0 2 - Rated Best on burning liquids / electrical SHORT range - 3 to 8 ft. 10- pound unit empties in 5 to 10 seconds! – Use short spurts! DISPERSES QUICKLY! –Continue applying after the fire is out! Unit gets VERY cold - hold properly

20 Halon Best for computers / electronics W eight-for-weight TWICE as effective as C0 2 No residue, easy clean-up VERY SHORT range, 3 to 6 ft. Like C0 2, Discharges QUICKLY! Like C0 2, Disperses QUICKLY! – Continue after flames are extinguished

21 In case of burning odor or smoke : Call 911 First! Notify Security - X Disconnect Equipment –Remove combustibles, if you can do so without danger to yourself Notify Floor Monitors –and Emergency Safety Coordinator

22 fire or smoke REACT upon discovery of fire or smoke R emove persons in immediate danger! E nsure doors are closed! (confine fire/smoke) A ctivate the building alarm ! C all the Fire Department ! T reat ALL fires as DANGEROUS! –Continue a complete building evacuation –Do not attempt to fight a fire UNLESS you are OSHA certified in use of a fire extinguisher !

23 Use a portable extinguisher ONLY if the: Building is being evacuated ( Fire alarm has been pulled ) Fire Department has been called ( Dial 911!) Fire is NOT spreading (small and contained) EXIT IS CLEAR (fight fire with your back to an exit ) Proper extinguisher is at hand, and... – You have been trained and know how to use it! – You use Buddy System - have someone back you up! Get assistance BEFORE trying to fight a fire!

24 Remember the PASS word: 1) Keep your back to a clear escape route, 2) Stand back 6 to 8 feet from the fire, 3) Then >>: P.A.S.S. P ULL A IM S QUEEZE S WEEP

25 PULL the pin

26 AIM LOW at the base of the fire

27 SQUEEZE the lever

28 SWEEP from side to side

29 OK, Its out… Now What? WATCH the fire area –If the fire flares up again repeat! –If you cant control the fire, LEAVE immediately! Call the fire department to inspect the scene! Recharge or replace any used fire extinguisher!

30 Sources for further information: OR... Contact Fire PIO-LSE at

31 ACKNOWLEDGEMENTS: This safety training module was developed in cooperation with: the National Fire Protection Association and the Public Information and Life Safety Education Section of the Fairfax County Fire & Rescue Department 4100 Chain Bridge Road, Fairfax, VA (703) or ( TTY Portions © by Dr. Robert Toreki, used by permission


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