Fire fighting PPT prepared by : Mahmoud Alsheikh

1. Portable Fire
Extinguishers
• Prepared by : Mahmoud
Alsheikh

2. Classes of Fire
• Extinguishers vary in size and type of
extinguishing agent used.
• Selection of appropriate extinguisher
is critical.
• Proper use reduces injury and
property damage.

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
• Rubber
• Household rubbish
• Natural vegetation
• Water is most common extinguishing
agent.

7. Class B Fires
• Class B fires involve items such as:
• Flammable liquids and gases
• Oil
• Grease
• Tar
• Some plastics
• Several agents can be used.

8. Class C Fires
• Class C fires involve
energized electrical
equipment such as:
– Building wiring
– Circuit breakers
– Transformers
– Power tools
• Require agents that will
not conduct electricity

9. Types of
Extinguishers
• Water
• Used to cool burning fuel
below its ignition
temperature
• Intended primarily for
Class A fires

10. Types of Extinguishers
• Dry chemicals
• Contain variety of agents in granular form
• 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
damage electronics.

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, and inert
• Is noncorrosive
• Both an expelling agent and an extinguishing agent

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
extinguisher.
Know where extinguishers are
located in and around the
workplace.
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 flames.

15. Ensure Your
Personal
Safety
• Approach fire with an
exit behind you.
• Have a planned escape
route in case of
extinguisher failure.
• 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.

16. Thank you