Training on Basic Fire Safety & Extinguishing

1. Training on Basic Fire Safety & Extinguishing
Training Conducted By
Engr. Ali Kamal Mostofa Rubel(Electrical)
MPH in Occupational Health & Safety
alikamalmostofa@gmail.com
+880 1682560119

2. Objective
 1. What is Fire?
 2. Fire Tetrahedral
 3. Class of Fire
 4. Stage of Fire
 5. How to Extinguish Fire
 6. Fire Fighting System
 7. How to use Fire Extinguisher
 8. Fire Fighting Team

3. What is Fire?
The rapid oxidation of a fuel evolving heat,
particulates, gases and non- ionizing radiation.
Another point of view
Fire is a chemical reaction among Heat, Fuel and
Oxygen with considering of Flash point.

4. Fire Tetrahedral

5. Fire Tetrahedral
The Combustion Process
• Four components
• Need all four components to start a fire
• Fire extinguishers remove one or more of the components.

6. Class of Fire
1. Solid fire - Class – A
2. Liquid fire - Class – B
3. Gas fire - Class – C
4. Metal fire - Class – D
5. Electrical fire - Class – E
6. Cooking fire - Class – F

7. Class – A (Solid fire)
Solid Fire:
Class A Fires consist of ordinary combustibles such as wood, paper,
trash or anything else that leaves an ash. Water works best to
extinguish a Class A fire. Example: Wood, Paper, Cloth, Etc.
Extinguishing Method: Dry Chemical Powder, CO2

8. Class – B (Liquid fire)
Liquid fire:
• Class B Fires are fueled by flammable or combustible liquids, which include oil,
gasoline, and other similar materials. Smothering effects which deplete the
oxygen supply work best to extinguish Class B fires. Example: Gasoline, Oil,
Grease, Other solvents, Etc.
Extinguishing Method: Foam type Fire Extinguisher

9. Class – C (Gas fire)
Gas Fire:
A class C fire refers to a fire that involves flammable gases such as natural
gas, petroleum gas, butane, hydrogen, acetylene or propane. These gases
are highly combustible and may cause large scale fires and explosions if
mixed with enough oxyge. Example: Mithen, Propen, LP Gas, Etc
Extinguishing Method: Dry Chemical Power, Sand, Soil

10. Class – D (Metal fire)
Metal Fire:
Class D Fires are combustible metal fires. Magnesium and Titanium are
the most common types of metal fires. Once a metal ignites do not use
water in an attempt to extinguish it. Only use a Dry Powder extinguishing
agent. Dry powder agents work by smothering and heat absorption.
Example: Magnesium, Sodium, Iron, Aluminum, Titanium, Etc
Extinguishing Method: Talcum powder, Graphite powder, Sand, Soil, Etc

11. Class – E (Electrical fire)
Electrical Fire: Class C Fires. Energized Electrical Fires are known as Class
C fires. Always de-energize the circuit then use a non-conductive
extinguishing agent. Such as Carbon dioxide. Example: Computer, Fax
machine, Etc
Extinguishing Method: CO2, Dry Chemical Powder

12. Class – F (Cooking fire)
Cooking Fire: Class F Fires are fires that involve cooking oils, grease or
animal fat and can be extinguished using Purple K, the typical agent
found in kitchen or galley extinguishers. Example: Fires involving
combustible oils, lards and fats in commercial cooking.
Extinguishing Method: Foam type Fire Extinguisher, Wet Chemical

13. What is Fire Extinguisher?
A fire extinguisher is an active fire protection
device used to extinguish or control small fires,
often in emergency situations. It is not intended for
use on an out-of-control fire, such as one which has
reached the ceiling, endangers the user, or
otherwise requires the expertise of a fire brigade.

14. Stages of Fire
Incipient to Growth= 5 minute
Growth to Fully Developed= 10 minute
Fully Developed stage= No use of fire extinguisher need Fire Brigade
Decay= Hidden fire again has chance to start fire.

15. Fire Fighting System
1. Active Fire Fighting System:
 Fire extinguisher
 Fire hose reels
 Fire blankets
 Sprinkler systems
 Smoke alarms
 Automated fire doors
 Thermal detectors
 Fire control systems
2. Passive Fire Fighting System:
 Means of Egress
 Fire resistant Wall
 Fire rated Door & Window
 Fire rated Paint
 Fire rated clothing & Fabrics
 Floor evacuation
 Venting system

16. Fire Extinguisher Anatomy
DISCHARGE HOSE
DISCHARGE NOZZLE
DISCHARGE ORIFICE
DATA PLATE
CARRYING HANDLE
PRESSURE GAUGE (not found
on CO2 extinguishers)DISCHARGE LEVER
DISCHARGE LOCKING PIN
AND SEAL
BODY

17. Portable Fire Extinguisher Inspection
Passed
Not Passed
Not Passed

18. How To Use Fire Extinguisher
PULL... Pull the pin. This will
also break the tamper seal.
AIM... Aim low, pointing the
extinguisher nozzle (or its
horn or hose) at the base of
the fire. ...
SQUEEZE... Squeeze the
handle to release the
extinguishing agent.
SWEEP... Sweep from side to
side at the base of the fire
until it appears to be out.

19. Fire Prevention Team
Team Leader
Fire Extinguishing Team Rescue Team First Aid Team
1.
2.
3.
4.
5.
1.
2.
3.
4.
5.
1.
2.
3.
4.
5.

20. Color Code of Fire Fighting Team

21. Evacuation Plan (Template)

22. Any
Question?