Institute for Plasma Research
Welcomes you all on
Presented By: D.V.MODI, Safety Officer, IPR
Compiled by: SAFETY COMMITTEE, IPR
WHAT IS FIRE?
The self-sustaining process of rapid
oxidation of a fuel, which produces heat &
light.
Its a rapid chain reaction.
HOW DOES FIRE START?
HOW DOES FIRE START?
1. Oxygen:
Oxygen is always available in air.
2. Heat / Source of Ignition:
Open flame, Spark, Temperature, static elect.
3. Fuel
Combustible material, Flammable Chemicals/Gas
Individual component is not capable to cause
fire. Three components together only can
cause fire.
HOW TO PREVENT OR EXTINGUISH THE FIRE?
Prevention of fire means absence of any one of the
three components,
and
Extinguishing means removing any one of the three
components
HOW TO PREVENT OR EXTINGUISH THE FIRE?
1. Removing Oxygen:
(Smothering Technique)
Cut off air supply to fire by
providing blanketing either by
sand, DCP, CO2, CA or other
inert media,
Most widely accepted fire
prevention
technique
in
petroleum storage
HOW TO PREVENT OR EXTINGUISH THE FIRE?
2. Removing Heat or Source
of ignition:
(Cooling Technique)
To prevent fire, eliminate all
sources of ignition / spark etc.
To extinguish a fire cool down
flame by water,
HOW TO PREVENT OR EXTINGUISH THE FIRE?
3. Removing Fuel:
(Starvation Technique)
Remove or eliminate all
Combustible
material,
Flammable Chemicals or Gas
from the source of ignition.
Cut off gas supply for gas fire.
MAJOR CAUSES OF FIRE
Carelessness with handling of
ignition sources (smoking, matches,
welding, gas cutting, open flame,
etc) :
20%
Improper
use
of
electricity
(overloading a circuit or overuse of
extension
cords,
improper
maintenance):
15%
Improper rubbish disposal
(Improper housekeeping)
Improper storage of flammables
(Chemicals, Solvents, Oil, etc.)
40 %
HOW CAN WE PREVENT THE FIRE?
PREVENTION IS ALWAYS BETTER THAN CURE
Ensure that Offices and Labs are free of excess
combustible material like papers, cartons, Oil, etc.
Ensure lowest possible inventory of flammable
chemicals & Gas Cylinders inside the Labs. Store
incompatible chemicals separately.
Avoid spark-producing jobs like welding, gas
cutting, grinding,
materials.
etc.
near
the
flammable
HOW CAN WE PREVENT THE FIRE?
PREVENTION IS ALWAYS BETTER THAN CURE
Avoid joints in cables and loose connections.
Avoid temporary connections. Prevent overloading
of electrical circuits and ensure grounding.
Turn off electrical appliances while leaving the
Office.
CLASSES OF FIRE
Class A
Ordinary Combustibles
This includes fuels such as wood, paper,
rubber, cloth etc.
CLASSES OF FIRE
Class B
Flammable Liquids
This includes all hydrocarbon and alcohol
based liquids
CLASSES OF FIRE
Class C
Flammable Gases &
Energized Electrical Equipment
This includes LPG, Acetylene gas fire.
CLASSES OF FIRE
Class D
Combustible Metals
Examples of these type of metals are Sodium,
Lithium, Magnesium etc.
TYPES OF FIRE EXTINGUISHERS
The importance of portable
Fire Extinguishers?
Your first line of defence!
TYPES OF FIRE EXTINGUISHERS
Based on filling material, fire extinguishers are
classified in various categories mainly,
1.
2.
3.
4.
Dry Chemical Powder (DCP) Type FE,
ABC Type FE,
Carbon Dioxide Type FE,
Clean Agent FE
TYPES OF FIRE EXTINGUISHERS
1. Dry Chemical Powder (DCP) Type FE:
Valve
Discharge
hose
Sodium bicarbonate powder filled in the
cylinder. It has inert gas cartridge.
To operate the FE, push the valve knob
down which in turns puncture the gas
cartridge. Pressure gas expel powder in
form of jet.
Widely used for Class B & C fires.
TYPES OF FIRE EXTINGUISHERS
1. Dry Chemical Powder (DCP) Type FE:
Discharge Range
6 ft. to 12 ft.
Discharge Time
8 sec. To 20 sec.
2 kg. DCP F.E.
5 kg. DCP F.E.
TYPES OF FIRE EXTINGUISHERS
2. ABC Type Fire Extinguisher:
Valve
Discharge
Nozzle
Mono-Ammonium Phosphate powder
is filled in the cylinder. Powder is under
stored pressure of Nitrogen instead of
gas cartridge.
To operate the FE, squeeze the valve
grips.
TYPES OF FIRE EXTINGUISHERS
2. ABC Type Fire Extinguisher:
Valve
Pressure
Gauge
It has Pressure Gauge on the valve,
which indicates readiness of FE.
Pointer
in
green
zone(Vertical)
indicates OK condition. Widely used for
all Class of fires.
The most effective extinguishing
media. It can also be used on electric
fire due to its non-conductive
characteristic.
TYPES OF FIRE EXTINGUISHERS
2. ABC Type FE:
Discharge Range
6 ft. to 12 ft.
Discharge Time
8 sec. To 20 sec.
2 kg. ABC F.E.
5 kg. ABC F.E.
TYPES OF FIRE EXTINGUISHERS
3. Carbon Dioxide Type FE:
Valve
Discharge
hose
Discharge
horn.
Liquefied Carbon Dioxide (CO2)
filled at pressure @ 60 Kg/cm2 in
the cylinder.
It has horn on discharge nozzle
and does not have Pressure
Gauge.
It has valve with wheel. To open,
rotate the wheel anti-clockwise.
TYPES OF FIRE EXTINGUISHERS
3. Carbon Dioxide Type FE:
Widely used for Class B & C fires.
Valve
No residue.
Discharge
hose
Discharge
horn.
May not be effective for Class A fire
because it may not be able to displace
enough O2 to put the fire out. Class A
material may also re-ignite in open
area, where air movement is high.
TYPES OF FIRE EXTINGUISHERS
3. Carbon Dioxide Type FE:
Discharge Range
3 ft. to 8 ft.
Discharge Time
8 sec. To 30 sec.
2 kg. CO2 F.E.
4.5 kg. CO2 F.E.
6.5 kg. CO2 F.E.
TYPES OF FIRE EXTINGUISHERS
4. Clean Agent Type FE:
Clean gas agent which leaves
no residue, hence no collateral
damage to the equipments,
Discharge
Nozzle
Environmental friendly,
Clean Agent is a proprietary
blend of HCFC-123 and inert
material,
Widely used for all classes of
fire,
TYPES OF FIRE EXTINGUISHERS
4. Clean Agent Type FE:
Discharge
Nozzle
It has Pressure Gauge on the
valve,
which
indicates
readiness of FE. Pointer in
green zone(Vertical) indicates
OK condition.
It can also be used on electric
fire due to its non-conductive
characteristic.
TYPES OF FIRE EXTINGUISHERS
4. Clean Agent Type FE:
Discharge Range
6 ft. to 15 ft.
Discharge Time
16 sec.
2 kg. Clean agent F.E.
Pressure gauge
with nozzle.
HOW TO OPERATE FIRE EXTINGUISHERS?
REMEMBER: P A S S METHOD
Pull the pin:
This will allow you
to squeeze the handle for
ABC / Clean agent FE
to rotate the wheel for
CO2 FE &
to push the knob for DCP
FE
in order to discharge
content from FE
the
HOW TO OPERATE FIRE EXTINGUISHERS?
REMEMBER: P A S S METHOD
Aim at the base of the fire:
Aiming at the middle will not be
effective. The agent will pass
through the flames.
Aim the discharge jet on the
base of the fire.
HOW TO OPERATE FIRE EXTINGUISHERS?
REMEMBER: P A S S METHOD
Squeeze the handle:
Squeeze
the
handle
(ABC/Clean agent FE) or rotate
valve wheel anti-clockwise (CO2
FE) or push the knob (DCP FE).
This will release the pressurized
extinguishing agent.
HOW TO OPERATE FIRE EXTINGUISHERS?
REMEMBER: P A S S METHOD
Sweep side to side:
Cover the entire area that is on
fire.
Continue until fire is
extinguished.
Keep an eye on the affected
area for re-lighting.
FIRE EMERGENCY PROCEDURE
Once fire starts it spreads very fast. It is very easy
to fight fire in its incipient stage. So attack
immediately on small fires without any delay.
While fighting a fire
Inform other people working in the affected area.
Turn Off electrical equipment, if it is safe to do so.
Keep an exit to your back for easy escape.
Dont make affected area crowded. Assemble at
safe location.
Call outside fire services for major fire and guide
them by right information & help them. Inform Lab
In-charge, Safety & Administration / Security.
FIRE EMERGENCY PROCEDURE
If your clothes catch fire, do NOT run. This could
make the fire spread more quickly. Instead, stop,
drop, and roll! In other words, stop, drop to the
ground, cover your face with your hands, and roll
back and forth until the fire is put out.
If there is smoke in the area, cover your nose and
mouth with a small cloth and stay low to the
ground as youre leaving. Smoke is very
dangerous to breathe and difficult to see through.
Since smoke naturally rises, you should crawl on
your hands and knees to exit the building.
You are not expected
to be firefighters!
Do not take unnecessary risks!
THANK YOU FOR
Your valuable time
