“Fire Extinguishers”

OBJECTIVES: 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.

UNABLE to evaluate a fire UNAWARE of DANGER due to... 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

WHY UNTRAINED PEOPLE Can’t use a fire extinguisher safely (continued): INEXPERIENCED Don’t know about the proper type of extinguisher Don’t know how to make a “Fight or Flight” analysis Unfamiliar with the “P.A.S.S. method”

COMMON FIRE CLASSIFICATIONS “Ordinary” combustibles Paper, wood, rubber, plastics and textiles. “Flammable liquids” Oil, gasoline, solvents “Energized circuits” Electrical equipment and computers

HOW THEY WORK: 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 1-A is equivalent on Class-A fire to five liters of water. 2-A contains has twice as much extinguishing agent.

HOW THEY WORK: Works by blanketing the fuel. 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.”

HOW THEY WORK: Class “C” units have no numerical rating. A Class “C” rating doesn’t imply any capacity. Only indicates that the extinguishing agent is non-conductive, safe on energized equipment. Works by displacing oxygen, smothering fire.

COMMON TYPES OF FIRE EXTINGUISHING AGENTS WATER DRY CHEMICAL CO2 and Halon

WATER Water + CO2 propellant ONLY for Class fires wood / paper, etc. Spreads burning liquids! DANGER of electric shock if used on on live circuits!

DRY CHEMICAL MULTI-PURPOSE RATED Either Or 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.

C02 - Rated DISPERSES QUICKLY! 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

Halon Best for computers / electronics Weight-for-weight TWICE as effective as C02 No residue, easy clean-up VERY SHORT range, 3 to 6 ft. Like C02, Discharges QUICKLY! Like C02, Disperses QUICKLY! Continue after flames are extinguished

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

Portable Fire Extinguishers LIMITED IN: Capacity - 1.5 to 25 lbs. of extinguishing agent Range - Typically 3 to 15 feet Duration - Discharge their contents in only 5 to 30 seconds!

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

In case of burning odor or smoke: Call 911 First! Notify ? Disconnect Equipment Remove combustibles, if you can do so without danger to yourself Notify Emergency Safety Coordinator

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!

PULL AIM SQUEEZE SWEEP P.A.S.S. 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. PULL AIM SQUEEZE SWEEP

PULL the pin AIM LOW at the base of the fire the lever SQUEEZE SWEEP

OK, It’s out… Now What? WATCH the fire area If the fire flares up again repeat! If you can’t control the fire, LEAVE immediately! Call the fire department to inspect the scene! Recharge or replace any used fire extinguisher!

Maintaining Portable Fire Extinguishers Must maintain in a fully charged and operable condition Must keep in their designated places at all times except during use Must conduct an annual maintenance check Must record the annual maintenance date and retain this record for one year after the last entry or the life of the shell, whichever is less 1910.157(c)(4) 1910.157(e)(3)