Co2 fire extinguisher all

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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. Fireisarapidchemicalreactionofoxidant
withfuelaccompaniedbythereleaseofenergy,
indicatedbyincandescenceorflame.
OR
Fireisacontinuousprocessofcombustionwith
threecomponentnamelyfuel,oxygen&heat
maintaininganunbrokenchainofchemical
reactionreleasinglight,heat&smokeetc..
What is Fire
আগুন

4. Combustion Characteristics
প্রজ্জ্বলননরবৈশিষ্ট্য
For a fire to happen, the following elements are
essential
•Oxidizerto sustain combustion (প্রজ্জ্বলনবজায়রাখতে).
•Heatto reach ignition temperature (ইগননশনোপমাত্রা
পপ ৌঁছাতে).
•Fuelor combustible material .
Thisresultsinachemicalchainreactionwhichstartsa
fire.Removinganyoftheseelementswillextinguishthe
fire.এইনেনটিউপদানযখনরাসায়ননকনবনিয়াশুরুকতরেখনআগুনজ্বলতে
শুরু কতর।
‘Essentially,fireextinguishersputoutfirebytaking
awayoneormoreelementsofthefire
triangle/tetrahedron’

5. The Fire Triangle

6. •দাহ্যবস্তুরউপরনিনিকতরআগুতনরপেনিনবনযাসকরাহ্য়।
মূলেকীধরতিরপদাতথেবাদাহ্যবস্তুতেআগুনপলতগতছোর
উপরনিনিকতরআগুতনরনবিাজনকরাহ্য়।
•আগুতনরপেনিবাজ্বালানীরউৎতসরপেনিনবনযাসজানাখুবই
গুরুত্বপূিে।এটিজানাথাকতলআপননসঠিকিাতবসঠিকফায়ার
এ�টিিংগুইসারটিবযবহ্ারকরতেপারতবন।
•যনদআপননসঠিকফায়ারএ�টিিংগুইসারননবোচনকরতেবযথেহ্ন
েতবআপননআগুনননয়ন্ত্রনবাননবোপিকরতেস�মহ্তে
পারতবননাএজনযআগুতনরপেনিনবনযাসজানাজরুরী।
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
Classifications
Classification of Fire:

8. Fire can be extinguished by
1. Cooling-the fuel by removing
heat (by applying water).
2.Smothering-bycuttingoff
oxygensupply(byapplying
foam,carbondioxide).
অশিশনৈবাপণপদ্ধশি

9. 3.Starving-thefirebyremoving
thefuel.(bystoppinggasflow
duringapipelinefire)
4.PoisoningtheFlam-by
stoppingthechainreaction.
(byapplyingdrychemical
powder).

10. Features of CO2 (ববনশষ্ট্য)
১।কাবেনডাইঅ�াইডবিেহ্ীন
(colorless)।
২।কমঘনতত্বরমতধযগযাসগন্ধহ্ীন;
(odorlessgas)েতবপযোপ্তউচ্চ
ঘনতত্বরসাতথএরেীব্র,অযানসডযুক্তগন্ধ
রতয়তছ।
৩।স্ট্যান্ডাডেোপমাত্রাএবিংচাতপ,কাবেনডাই
অ�াইতডরঘনত্বপ্রায়1.98kg/m3,
৪।বায়ুরপচতয়1.67গুিপবনশ।
৫।এটিউদ্বায়ী(Volatile)
৬।একপকনজনসওটুেরলপ্রায়.হ্াফ
নকউনবকনমটারযুক্তগযাসবেরীকরতেপাতর।
৭।ইহ্ারঅনধকঘননিূেঅবস্থায়নবপদজনক-
০৯%-১০%
পসফটিডাটানশট

11. CO2 Fire Extinguisher
CO2 fire
extinguisherscontain
pure carbon
dioxidewhichisaclean
extinguishant,leavingno
residue.Suitableforclass
B flammable
liquidfires(petrol,oil,
solvents) and
recommendedforuseon
liveelectricalequipment.
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12. CO2 Fire Extinguisher
Carbondioxideisstoredinliquidformunder
pressure.Acentraltubeactsasanoutletforcarbon
dioxidegas.Aplungerattachedtoaburstingdisc
atoneendandatriggerattheotherisusedto
releasethecarbondioxidegas.Theliquidchanges
togasasitcomesoutoftheextinguisherthrougha
hose.
নসওটুঅনিননবোপকযন্ত্রমযাঙ্গাননজনস্ট্তলরপেরী।এরনসনলন্ডারপজাড়া
নবহ্ীনবাসীমতলস।নসওটুগযাসনসনলন্ডারপ্রনেবগেইনিতে৩৩৭৫পাাঃ
পপ্রসাতরপনর�ীে।এরব্লানস্ট্িংপপ্রসার৭০০০পাাঃ/ইনি।েতবধরনও
উৎপাদনকারীপ্রনেষ্ঠানপিতদকম-পবনশহ্তেপাতর।নসনলন্ডারবযাবহ্ারকরার
জনযএকটিকযানরিংহ্যাতন্ডলআতছ।একটিঅপাতরটিিংনলিার(অপাতরটিিং
হুইলওথাকতেপাতর),এছাড়াপসফটিনপন,পলাকতরালিাল্ব,হ্াইতটনশন
নডসচাজেপাইপএবিংগযাসপবরহ্ওয়ারজনযহ্িেথাতক।

13. CO2 Fire Extinguisher Anatomy
DATA PLATE
PRESSURE GAUGE
(not found on CO
2
extinguishers)
BODY
DISCHARGE LEVER
DISCHARGE LOCKING PIN
AND SEAL
DISCHARGE HOSE
DISCHARGE NOZZLE
DISCHARGE ORIFICE
CARRYING
HANDLE

14. CARBON DIOXIDE (CO
2)
Fire Extinguishers
•Class “B” or “C” fires.
•8-30 seconds discharge time.
•Has NOpressure gauge--capacity verified
by weight.
•3-8 ft. maximum effective range.
•Extinguishes by smotheringburning
materials. Displaces oxygen.
•Effectivenessdecreasesas 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!
ACO2extinguisherhasaHornnozzlethatlocks
intoplace.Donotholdontothenozzlewhen
firingtheextinguisher,thisnozzlewill
get very cold as
theCO2gasisexpelled;CO2gashasa
temperature ofminus 66C.Ifyou
areholdingontothenozzleyouwill
receiveacoldburn.
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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 OfCo2Fire 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
ননটন�কএবিংননকরনসি
গযাস।
এটিপনরষ্কারঅনিননবোপিী
উপাদান।যাস্পশেকােরববদ্যযনেক
সরঞ্জাতমরউপরপকানআবরিসৃনষ্ট্
কতরনাএবিংনবদ্যযৎকুপনরবাহ্ী।
এটিদীঘেসময়পযেন্তিালথাতক।
ইহ্াদাহ্যবস্তুরউপরপকানপ্রিাব
পফতলনা।
ইহ্াননজস্বচাতপপবরহ্য়।

18. Advantages And Disadvantages OfCo2Fire 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?
Makesuretheextinguisheristhepropertypeforthelocation,
intheproperplace,visible,andonahangerorsecuredin
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
recharged.

24. Annual Maintenance/Inspection (cont.)
Reviewthemanufacturerdateorlabeltoseeifneedsarechargeor
hydrostatictest.Ifeitherisrequiredsenditoutforserviceorpurchasea
newunit.Whenitisoutforserviceyoumustreplaceitwithauseable
extinguisherofthepropersizeintheinterim.
How can I tell how old my Fire
Extinguisher is?
Onthechromeliquidtypes,thatdateis
usuallyfoundonthehangerloop.
OntheCO2typeextinguishersthisdate
isfoundstampedaroundtheshoulder
nearthetop.Theremaybemultipledate
stamps,lookforthemostrecent.
Somemanufacturersstampthedatein
the"boot"locatedaroundthe
extinguisherbaseorrightonthebase
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*thefireextinguishertoensureit
hasnotlostanyofitscharge.Itmust
weighthesameasthegrossweightlisted
onthelabel,nottheagentweight.
Example;atypical5kg.ABCDry
ChemicalExtinguisherhas5kg.of
extinguishingagentbutweighs9kg.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 Keyword
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.Assistanyperson
inimmediatedanger
tosafety,ifitcanbe
accomplishedwithout
risktoyourself.Don’t
putyourselfindanger
too.

31. Guidelines for Fighting Fires
2.Call999or9555555andactivatethe
buildingfirealarm.Thefirealarmwillnotify
the firedepartmentandotherbuilding
occupants.
Ifthefireissmall(andonlyafterhavingdone
these2things),youmayattempttousean
extinguishertoputitout.

32. Guidelines for Fighting Fires
Before deciding to fight the fire, keep these things in
mind:
1.Knowwhatisburning!Ifyoudon’tknowwhat’sburning,
youwon’tknowwhatkindoffireextinguishertouse
2.Isthefirespreadingrapidlybeyondthepointwhereit
started?Thetimetouseafireextinguisherisatthe
beginningstagesofthefire
3.Ifthefireisalreadyspreadingquickly,itisbesttosimply
evacuatethebuilding.
As you evacuate the building, close the door (if there is
one) behind you as you leave. This will help to slow
down the spread of smoke and fire.

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
within30 seconds
–get yourself out!
Your safety and the safety of others is
more important than fighting the fire!
!