1. Portable FirePortable Fire
2. Classes of Fire
• Extinguishers vary in size and type of
extinguishing agent used.
• Selection of appropriate extinguisher is
• Proper use reduces injury and property
3. Classes of Fire
• The classes of fire discussed in this
presentation is in line with OSHA regulations
• Electrical fire is classified as class “C” fire
4. Classes of Fire
5. Classes of Fire
6. Class A Fires
• Class A fires involve
items such as:
– Ordinary wood
– Household rubbish
– Natural vegetation
• Water is most common
7. Class B Fires
• Class B fires involve
items such as:
– Flammable liquids and
– Some plastics
• Several agents can be
8. Class C Fires
• Class C fires involve
equipment such as:
– Building wiring
– Circuit breakers
– Power tools
• Require agents that will
not conduct electricity
9. Types of Extinguishers
Used to cool burning fuel below its ignition
Intended primarily for Class A fires
10. Types of Extinguishers
• Dry chemicals
Contain variety of agents in
Ordinary models extinguish Class
A and B fires.
Multipurpose models extinguish
Class A, B, and C fires.
All can be used on Class C fires,
but residue can damages
11. Types of Extinguishers
• Carbon Dioxide (CO2)Extinguishers
 Rated for Class B and C fires
 Extinguishes by enveloping fuel in a
cloud of inert gas
 Also cools the burning material
 1.5 times heavier than air
 Colorless, odorless, nonconductive,
 Is noncorrosive
 Both an expelling agent and an
12. Use of Fire Extinguishers
• Simple to operate with basic training
• Six basic steps for extinguishing fires
– Locate the fire
– Select the proper extinguisher
– Transport the extinguisher to the fire
– Activate the extinguisher to release the agent
– Apply the extinguishing agent
– Ensure personal safety
• Practice and training are essential.
13. Locating a Fire Extinguisher
• Know the types and locations of
• Know where extinguishers are located in
and around the work place.
• Have at least one extinguisher in your
home by your kitchen.
14. Basic Steps of
Fire Extinguisher Operation
• P-A-S-S acronym:
– Pull the safety pin.
– Aim the nozzle at the base of the flames.
– Squeeze the trigger to discharge agent.
– Sweep the nozzle across the base of the
15. Ensure Your Personal Safety
• Approach fire with an exit behind you.
• Have a planned escape route in case of
• Never let fire get between you and a safe exit.
• After suppression, back away; never turn your
back on the fire.
• Watch fire for rekindle.