Demonstrate types of fire Demonstrate types of fire extinguishersextinguishers

Enrollment no.Enrollment no. 146490305002146490305002 146490305005146490305005 146490305008146490305008

ConstructionConstruction

Modern fire extinguishers are constructed from steel, Modern fire extinguishers are constructed from steel, aluminum or aluminum alloy. These materials are used to aluminum or aluminum alloy. These materials are used to create a durable exterior for fire extinguishers. The exteriors create a durable exterior for fire extinguishers. The exteriors can withstand knocks, external temperatures and corrosion.can withstand knocks, external temperatures and corrosion.

The gas cartridge operated fire extinguishers are coated in The gas cartridge operated fire extinguishers are coated in plastic to provide the cartridge extra protection against the plastic to provide the cartridge extra protection against the contents of the fire extinguisher. Gas cartridges can be contents of the fire extinguisher. Gas cartridges can be piercing disc or frangible pipe cartridgespiercing disc or frangible pipe cartridges..

WorkingWorking

The fire extinguisher is operated by releasing the pin, breaking The fire extinguisher is operated by releasing the pin, breaking the tamper seal and pressing down on the fire extinguisher the tamper seal and pressing down on the fire extinguisher handle.handle.

The pressure stored within the top of the fire extinguisher (dry The pressure stored within the top of the fire extinguisher (dry air or nitrogen) is released.air or nitrogen) is released.

The pressure forces down on the extinguishing agent within the The pressure forces down on the extinguishing agent within the fire extinguisher (water, foam, powder etc.)fire extinguisher (water, foam, powder etc.)

The extinguishing agent is forced up the syphon tube within the The extinguishing agent is forced up the syphon tube within the fire extinguisher, through the head cap and hose onto the fire.fire extinguisher, through the head cap and hose onto the fire.

Some fire extinguisher hoses are fitted with a squeeze grip Some fire extinguisher hoses are fitted with a squeeze grip control to regulate the flow of the extinguishant.control to regulate the flow of the extinguishant.

How fire works ?

There are three elements that must be present for fire

to exist

Oxygen to combustion

Heat to raise the material to its ignition temperature

Fuel to support the combustion

What type of fire extinguisher is right for What type of fire extinguisher is right for you ?you ?

CLASS A :- Solid such as paper, wood, Plastic etc CLASS A :- Solid such as paper, wood, Plastic etc CLASS B :- Flammable liquid such as Paraffin, petrol, oil etcCLASS B :- Flammable liquid such as Paraffin, petrol, oil etcCLASS C :- Flammable gases such as propane, butane, methaneCLASS C :- Flammable gases such as propane, butane, methane etcetcCLASS D :- Metals such as aluminium, magnesium, titaniumCLASS D :- Metals such as aluminium, magnesium, titanium etc etc CLASS E :- Fire involving electrical apparatus CLASS E :- Fire involving electrical apparatus CLASS F :- Cooking oil & fat etc CLASS F :- Cooking oil & fat etc

Water fire extinguisherWater fire extinguisher

Work by removing heat element of aWork by removing heat element of a firefire Should only be used on CLASS A fireShould only be used on CLASS A fire CALSS A fire include common CALSS A fire include common combustible material like wood, papercombustible material like wood, paper and most plasticsand most plastics

Foam fire extinguisherFoam fire extinguisher

Work by removing the heat elementWork by removing the heat element of fire and also separating theof fire and also separating the oxygen from other elementoxygen from other element Should only be used on CLASS AShould only be used on CLASS A & B fire& B fire CALSS A fire include common CALSS A fire include common combustible material like wood, combustible material like wood, paper and most plasticspaper and most plastics CLASS B fire involve flammable or CLASS B fire involve flammable or Combustible liquid such as paraffin,Combustible liquid such as paraffin, petrol and oilpetrol and oil

It contain hydrocarbon - based surfactant such as sodium It contain hydrocarbon - based surfactant such as sodium alkali sulfatealkali sulfate

Protein foamsProtein foams It contain natural proteins as the foaming agentIt contain natural proteins as the foaming agent

Carbon dioxide fire extinguisherCarbon dioxide fire extinguisher

Work by removing the oxygenWork by removing the oxygen element of a fire and also helpingelement of a fire and also helping remove heat due to a very coldremove heat due to a very cold dischargedischarge Should only be used on CLASS BShould only be used on CLASS B & E& E CLASS B fire involve flammable or CLASS B fire involve flammable or Combustible liquid such as paraffin,Combustible liquid such as paraffin, petrol and oilpetrol and oil

CLASS E fire involve electrical equipment such as CLASS E fire involve electrical equipment such as appliances, wiring, circuit breakers and outletsappliances, wiring, circuit breakers and outlets

Dry chemical fire extinguisherDry chemical fire extinguisher

Primary work by interrupting thePrimary work by interrupting the chemical reaction of a firechemical reaction of a fire A very versatile fire extinguisher, A very versatile fire extinguisher, these are rated to be effective on these are rated to be effective on CLASS A, B & ECLASS A, B & E Since CLASS A, B & E fire are the Since CLASS A, B & E fire are the most common, dry chemical firemost common, dry chemical fire extinguisher are the most widely usedextinguisher are the most widely used in home fire situationin home fire situation

It contain ammonium polyphosphate, potassium bicarbonate, It contain ammonium polyphosphate, potassium bicarbonate, potassium chloridepotassium chloride

Wet chemical fire extinguisherWet chemical fire extinguisher

Work by first removing the heatWork by first removing the heat element of a fire and then preventingelement of a fire and then preventing re-ignition by creating a barrierre-ignition by creating a barrier between the oxygen and fuel element.between the oxygen and fuel element. This type of fire extinguisher wasThis type of fire extinguisher was specifically developed for CLASS Fspecifically developed for CLASS F fire that involve by cooking oil &fire that involve by cooking oil & fatsfats Most often CLASS F fire occur inMost often CLASS F fire occur in commercial restaurants and cafeteriacommercial restaurants and cafeteria sittingsitting

It contain potassium acetate - based agentIt contain potassium acetate - based agent

Clean agent fire extinguisherClean agent fire extinguisher

Also known as halogenated fireAlso known as halogenated fire extinguisher they work byextinguisher they work by interrupting the chemical reactioninterrupting the chemical reaction of a fireof a fire Clean agent fire extinguisher are Clean agent fire extinguisher are primarily for CLASS B & E firesprimarily for CLASS B & E fires CLASS B fire involve flammable or CLASS B fire involve flammable or Combustible liquid such as paraffin,Combustible liquid such as paraffin, petrol and oilpetrol and oil

CLASS E fire involve electrical equipment such as CLASS E fire involve electrical equipment such as appliances, wiring, circuit breakers and outletsappliances, wiring, circuit breakers and outlets

Dry powder fire extinguisherDry powder fire extinguisher

Work by separating the fuel from the Work by separating the fuel from the oxygen of a fireoxygen of a fire Dry powder fire extinguishers are only forDry powder fire extinguishers are only for in CLASS D firesin CLASS D fires CLASS D fire involve combustibleCLASS D fire involve combustible metals like aluminum, magnesium, titaniummetals like aluminum, magnesium, titanium this type of fire might occur in a chemical this type of fire might occur in a chemical laboratorylaboratory

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