This presentation is about Co2 fire extinguisher and i prepared this to know about the knowledge of Co2 fire extinguisher . I hope to see your comments.

1. Fire Extinguisher CO2
Presented by:
K M T J T Islam Tarik
Inspector
Fire Service & Civil Defence

2. Agenda
• What is Fire?
• Combustion Characteristics
• The Fire Triangle ;
• Classification of Fire
• Fire can be extinguished by;
• Carbon Dioxide extinguisher
• CO2 type fire extinguisher diagram
• Advantages And Disadvantages
• picture label or Sings
• Fire Extinguisher Inspections
• Guidelines for Fighting Fires
• Cause of cool burns

3. Fire is a rapid chemical reaction of oxidant
with fuel accompanied by the release of energy,
indicated by incandescence or flame.
OR
Fire is a continuous process of combustion with
three component namely fuel, oxygen & heat
maintaining an unbroken chain of chemical
reaction releasing light, heat & smoke etc..
What is Fire
আগুন

4. Combustion Characteristics
প্রজ্জ্বলননর বৈশিষ্ট্য
For a fire to happen, the following elements are
essential
• Oxidizer to sustain combustion (প্রজ্জ্বলন বজায় রাখতে).
• Heat to reach ignition temperature (ইগননশন োপমাত্রা
পপৌঁছাতে).
• Fuel or combustible material .
This results in a chemical chain reaction which starts a
fire. Removing any of these elements will extinguish the
fire. এই নেনটি উপদান যখন রাসায়ননক নবনিয়া শুরু কতর েখন আগুন জ্বলতে
শুরু কতর।
‘Essentially, fire extinguishers put out fire by taking
away one or more elements of the fire
triangle/tetrahedron’

5. The Fire Triangle

6. • দাহ্যবস্তুর উপর নিনি কতর আগুতনর পেনিনবনযাস করা হ্য়।
মূলে কী ধরতির পদাতথে বা দাহ্যবস্তুতে আগুন পলতগতছ োর
উপর নিনি কতর আগুতনর নবিাজন করা হ্য়।
• আগুতনর পেনি বা জ্বালানীর উৎতসর পেনিনবনযাস জানা খুবই
গুরুত্বপূিে। এটি জানা থাকতল আপনন সঠিকিাতব সঠিক ফায়ার
এক্সটিিংগুইসারটি বযবহ্ার করতে পারতবন।
• যনদ আপনন সঠিক ফায়ার এক্সটিিংগুইসার ননবোচন করতে বযথে হ্ন
েতব আপনন আগুন ননয়ন্ত্রন বা ননবোপি করতে সক্ষম হ্তে
পারতবন না এ জনয আগুতনর পেনিনবনযাস জানা জরুরী।
Why is it necessary to know the classification of fire when
using fire extinguishers?

7. Classes
of Fires
Picture
Symbol
Types of fuel Mnemonic
Combustibles:
Wood, cloth, paper,
plastic, trash.
Ash
Flammable
Liquids: Gasoline,
oil, tar, oil-based
paint etc.
Barrel
Flammable gases :
Mythen, Ethylene,
Butane, propylene
Cylinder
Combustible
Metals: Magnesium,
lithium, titanium
Dynamite
ClassificationsClassification of Fire:

8. Fire can be extinguished by
1. Cooling- the fuel by removing
heat (by applying water).
2. Smothering- by cutting off
oxygen supply (by applying
foam, carbon dioxide).
অশি শনৈবাপণ পদ্ধশি

9. 3. Starving- the fire by removing
the fuel.(by stopping gas flow
during a pipeline fire)
4. Poisoning the Flam- by
stopping the chain reaction.
(by applying dry chemical
powder).

10. Features of CO2 (ববনশষ্ট্য)
১। কাবেন ডাই অক্সাইড বিেহ্ীন
(colorless) ।
২। কম ঘনতত্বর মতধয গযাস গন্ধহ্ীন;
(odorless gas) েতব পযোপ্ত উচ্চ
ঘনতত্বর সাতথ এর েীব্র, অযানসডযুক্ত গন্ধ
রতয়তছ।
৩। স্ট্যান্ডাডে োপমাত্রা এবিং চাতপ, কাবেন ডাই
অক্সাইতডর ঘনত্ব প্রায় 1.98 kg/m3,
৪। বায়ুর পচতয় 1.67 গুি পবনশ।
৫। এটি উদ্বায়ী (Volatile)
৬। এক পকনজ নসওটু েরল প্রায় .হ্াফ
নকউনবক নমটারযুক্ত গযাস বেরী করতে পাতর।
৭। ইহ্ার অনধক ঘননিূ ে অবস্থায় নবপদজনক-
০৯%-১০%
পসফটি ডাটা নশট

11. CO2 Fire Extinguisher
CO2 fire
extinguishers contain
pure carbon
dioxide which is a clean
extinguishant, leaving no
residue. Suitable for class
B flammable
liquid fires (petrol, oil,
solvents) and
recommended for use on
live electrical equipment.
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12. CO2 Fire Extinguisher
Carbon dioxide is stored in liquid form under
pressure. A central tube acts as an outlet for carbon
dioxide gas. A plunger attached to a bursting disc
at one end and a trigger at the other is used to
release the carbon dioxide gas. The liquid changes
to gas as it comes out of the extinguisher through a
hose.নসওটু অনি ননবোপক যন্ত্র মযাঙ্গাননজ নস্ট্তলর পেরী। এর নসনলন্ডার পজাড়া
নবহ্ীন বা সীমতলস। নসওটু গযাস নসনলন্ডার প্রনে বগে ইনিতে ৩৩৭৫ পাাঃ
পপ্রসাতর পনরক্ষীে। এর ব্লানস্ট্িং পপ্রসার ৭০০০ পাাঃ/ইনি। েতব ধরন ও
উৎপাদনকারী প্রনেষ্ঠান পিতদ কম-পবনশ হ্তে পাতর। নসনলন্ডার বযাবহ্ার করার
জনয একটি কযানরিং হ্যাতন্ডল আতছ। একটি অপাতরটিিং নলিার (অপাতরটিিং
হুইলও থাকতে পাতর), এছাড়া পসফটি নপন, পলা কতরাল িাল্ব, হ্াইতটনশন
নডসচাজে পাইপ এবিং গযাস পবর হ্ওয়ার জনয হ্িে থাতক।

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

14. CARBON DIOXIDE (CO2)
Fire Extinguishers
• Class “B” or “C” fires.
• 8-30 seconds discharge time.
• Has NO pressure gauge--capacity verified
by weight.
• 3-8 ft. maximum effective range.
• Extinguishes by smothering burning
materials. Displaces oxygen.
• Effectiveness decreases as temperature of
burning material increases.
A Trash W ood Paper
B Liquids Grease
C Electrical Equipment
A Trash W ood Paper
B Liquids Grease
C Electrical Equipment

15. CO2 Fire Extinguishers can cause cool burns
when its used!
A CO2 extinguisher has a Horn nozzle that locks
into place. Do not hold onto the nozzle when
firing the extinguisher, this nozzle will
get very cold as
the CO2 gas is expelled; CO2 gas has a
temperature of minus 66C. If you
are holding onto the nozzle you will
receive a cold burn.
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16. A Trash W ood Paper
B Liquids Grease
C Electrical Equipment
A Trash W ood Paper
B Liquids Grease
C Electrical Equipment
Label or Sings
CO2 Fire Extinguisher Label or Sings

17. Advantages And Disadvantages Of Co2 Fire Extinguishers
 It is a non-corrosive
gas, does not contain
any solid material
making it very clean
extinguishing agent
 It does not conduct
electricity.
 It does not leave any
kind of residue.
 Has the longest service
life of most
extinguishers
 নন টনক্সক এবিং নন করনসি
গযাস।
 এটি পনরষ্কার অনি ননবোপিী
উপাদান। যা স্পশেকাের ববদ্যযনেক
সরঞ্জাতমর উপর পকান আবরি সৃনষ্ট্
কতর না এবিং নবদ্যযৎ কুপনরবাহ্ী।
 এটি দীঘে সময় পযেন্ত িাল থাতক।
 ইহ্া দাহ্যবস্তুর উপর পকান প্রিাব
পফতল না।
 ইহ্া ননজস্ব চাতপ পবর হ্য়।

18. Advantages And Disadvantages Of Co2 Fire Extinguishers
• Co2 is the most toxic gas when it
comes to human health. It is a highly
suffocating gas, whose concentration
of even 9% in the breathing air would
make a person unconscious within
minutes,
• special consideration should be taken
before installing in confined spaces.
• Very loud when used and a untrained
person may think the extinguisher is
not working correctly.
• If used incorrectly frost burns can
result.
• Not field refillable, has to be returned
to a refilling depot, so most companies
use an exchange cylinder service that
can be quite expensive.
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19. • Monthly Visual Inspection: Portable extinguishers or hose used in lieu
thereof under paragraph (d)(3) of this section shall be visually inspected
monthly. Confirm the extinguisher is visible, unobstructed, and in its
designated location.
• Verify the locking pin is intact and the tamper seal is unbroken. Examine the
extinguisher for obvious physical damage, corrosion, leakage, or clogged
nozzle.
• Confirm the pressure gauge or indicator is in the operable range or position,
and lift the extinguisher to ensure it is still full.
• Make sure the operating instructions on the nameplate are legible and facing
outward.
• Annual Maintenance Inspection: The employer shall assure that portable
fire extinguishers are subjected to an annual maintenance check. Stored
pressure extinguishers do not require an internal examination. The employer
shall 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. The record shall
be available to the Assistant Secretary upon request.
See the Following Slides for the Requirements of the Annual Maintenance Inspection
FIRE EXTINGUISHER INSPECTIONS

20. FIRE EXTINGUISHER INSPECTIONS
• PORTABLE FIRE EXTINGUISHERS
• NFPA 10 and General-Industry Requirements
Under OSHA –29 CFR 1910.157
• Carbon Dioxide
– Monthly –Inspection (visual)
– Annually -Annual Inspection/Maintenance
– Five Years -Recharge and Hydrostatic Test
• *It is usually less costly to purchase new ones from
GSA rather than pay for hydrostatic testing,
especially for smaller extinguishers.

21. Locking pin with anti-tamper seal
 Carrying handle / operating lever
 Pressure gauge
 Label :Type(Water, C02, Dry Chemical)
 Classification (A, B, C)
 NFPA capacity Rating
 Instructions
 Discharge nozzle or horn

22. Annual Maintenance/Inspection
What does annual maintenance of portable fire extinguishers involve?
Make sure the extinguisher is the proper type for the location,
in the proper place, visible, and on a hanger or secured in
vehicle.

23. Annual Maintenance/Inspection (cont.)
 Check the gauge to make sure it
is charged and not damaged.
Does the unit have the proper
hanging brackets?
 Complete an external
examination of the shell and
components for damage,
corrosion, dents, or wear.
 Examine the handle including the
pin and anti-tamper seal. Remove
seal.
 Remove the hose and inspect for
any blockage from dirt or insects.
Look inside the port to see any
signs of powder are left over from
a discharge.
 If there is any evidence that it
has been used it must be

24. Annual Maintenance/Inspection (cont.)
Review the manufacturer date or label to see if needs a recharge or
hydrostatic test. If either is required send it out for service or purchase a
new unit. When it is out for service you must replace it with a useable
extinguisher of the proper size in the interim.
How can I tell how old my Fire
Extinguisher is?
 On the chrome liquid types, that date is
usually found on the hanger loop.
 On the CO2 type extinguishers this date
is found stamped around the shoulder
near the top. There may be multiple date
stamps, look for the most recent.
 Some manufacturers stamp the date in
the "boot" located around the
extinguisher base or right on the base
itself.

25. Annual Maintenance/Inspection (cont.)
Make sure the labels are in good shape, legible,
have manufacturer information.
This was recharged and
hydrostatically tested in
January of 2007.

26. Annual Maintenance/Inspection (cont.)
• Weigh* the fire extinguisher to ensure it
has not lost any of its charge. It must
weigh the same as the gross weight listed
on the label, not the agent weight.
Example; a typical 5 kg. ABC Dry
Chemical Extinguisher has 5 kg. of
extinguishing agent but weighs 9 kg. 1
• *NOTE: This is required for CO2 type
extinguishers and optional for Dry
Chemical

27. Annual Maintenance/Inspection (cont.)
Remove the old anti-tamper seal.
•Pull the pin out to ensure it
comes out easily.
•Make sure handle and lever
operate freely but DO NOT
discharge the fire extinguisher.
Replace pin.
•Attach a new anti tamper seal.
Make sure it is the proper type
that will break away easily. NO
TIE WRAPS that need to be cut.
Anti-tamper seal

28. Annual Maintenance/Inspection (cont.)
 Annotate on the tag the date it was
manufactured and/or last hydrostatic
test date. If there is no section for
manufacturer date annotate that in
the Hydrostatic test line with a note.
 Annotate on the tag the date of the
annual inspection and by whom. If it
has been recharged, transfer that
information from the previous tag or
label but keep that tag or label with
the unit.
 If it is over 6 years old (dry chemical)
it needs recharging unless it is a
disposable (12 yrs.) or there is a
separate tag on it indicating a
recharge or hydrostatic test date. If it does not pass inspection-
Replace the unit or send it out for
servicing if needed

29. How to Use a Fire Extinguisher
Remember this easy Key word
when using an extinguisher -
P.A.S.S.
Pull the pin.
Aim the nozzle.
Squeeze the handle.
Sweep side to side at the base of
the fire.

30. Guidelines for Fighting Fires
For this reason, when
a fire is discovered…
1. Assist any person
in immediate danger
to safety, if it can be
accomplished without
risk to yourself. Don’t
put yourself in danger
too.

31. Guidelines for Fighting Fires
2. Call 999 or 9555555 and activate the
building fire alarm. The fire alarm will notify
the fire department and other building
occupants.
If the fire is small (and only after having done
these 2 things), you may attempt to use an
extinguisher to put it out.

32. Guidelines for Fighting Fires
Before deciding to fight the fire, keep these things in
mind:
1. Know what is burning! If you don’t know what’s burning,
you won’t know what kind of fire extinguisher to use
2. Is the fire spreading rapidly beyond the point where it
started? The time to use a fire extinguisher is at the
beginning stages of the fire
3. If the fire is already spreading quickly, it is best to simply
evacuate the building.
As you evacuate the building, close the door (if there is
one) behind you as you leave. This will help to slow

33. Never fight a fire if…
You don’t know what is burning.
The fire appears too large to handle with one
extinguisher
The fire is spreading rapidly beyond the spot
where it started
You don’t have an adequate or appropriate fire
extinguisher
You might inhale toxic smoke
Your instincts tell you not to

34. Remember – if you cannot extinguish the fire
within 30 seconds
– get yourself out!
Your safety and the safety of others is
more important than fighting the fire!
!