CO2 extinguishers capacities

CO2 extinguishers are the most effective for extinguishing type B and C fires. The type B fire is that produced by combustible liquids and gases, while type C is that generated by electrical discharges or currents.

When a CO2 extinguisher is discharged, the first thing that happens is an immediate loss of pressure, this generates the instantaneous expulsion of the gas (carbon dioxide) in the form of a white cloud.

The white cloud of CO2 is responsible for displacing oxygen, reducing its availability for combustion and causing the fire suffocation. If we add to this the effect of water condensation, we obtain an extremely powerful extinguishing effect.

Generally speaking, a fire is extinguished when the rate of ignition is less than the rate of heat loss, as this prevents the generation of sufficient heat to reach the minimum ignition temperature.

They are not suitable for extinguishing fires generated by chemical compounds such as magnesium, sodium, potassium, etc., since these generate their own oxygen which can not be counteracted by the CO2 of these extinguishers.

When to use a CO2 extinguisher?

CO2 extinguishers are especially recommended for extinguishing type C fires, i.e. those fires caused by the combustion of gases and which usually occur in energized electrical equipment.

How is CO2 found in an extinguisher?

It is stored in a liquid state at high pressure. When discharging the extinguisher, carbon dioxide passes in an instant from liquid to gas producing a large white cloud. … If we add the large white cloud of CO2 that displaces oxygen plus water condensation we get a great fire suppressant element.

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What is the shelf life of CO2 extinguishers?

Foams should be replaced every 3 years. CO2 extinguishers are conductivity tested annually, but not recharged. In general, pressurized gas extinguishers should be serviced every 6 years and hydrostatically tested 12 years after packaging.

Extinguisher co2 parts

CO2 extinguishers or carbonic snow are traditionally used for fires in the presence of electric current and for types of fire class B (liquid fire), but its use and applications is greater due to the properties of carbon dioxide.

CO2 has a number of properties that make it ideal for extinguishing fires. Carbon dioxide is a non-combustible gas that does not present chemical reactions with other substances, which makes it suitable for attacking different types of fires.

PURPURA K extinguishers have an efficient dry chemical powder based on potassium bicarbonate, a known and effective extinguishing agent. The active ingredient is mixed with siliconized additives to improve its fluidity and make it resistant to extreme weather conditions.

PURPURA K extinguisher is based on a multipurpose extinguishing powder that is used in: Class B fires (std. USA) – Class B/C (std. CEE): Fires originated by liquid fuels, flammable and gases. Class C fires (std. USA) – Class E (std. CEE): Fires involving equipment connected to the electrical network.

What type of fire does PQS extinguish?

Among the most common extinguishing agents, we can find the Dry Chemical Powder (D.C.P.), which is manufactured based on mono-ammonium phosphate, which gives it the particularity of being multipurpose since it extinguishes type A, B and C fires.

What turns off CO2?

CO2 or carbonic snow extinguishers are traditionally used for fires in the presence of electric current and for class B fire types (liquid fire), but their use and applications are greater due to the properties of carbon dioxide.

Why do CO2 extinguishers not have a pressure gauge?

Those with CO2 do not need pressure gauge because they will always have pressure as the extinguishing agent itself exerts it being a gas.

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Co2 extinguisher, characteristics

For fire prevention is very useful to know how to identify the types of fires that exist, but it is also necessary to know all the different types of extinguishers that exist in the market. One of the most prominent are the CO2 or carbon dioxide extinguishers.

CO2 extinguishers are especially recommended for extinguishing type C fires, i.e., those fires that are produced by the combustion of gases and usually occur in energized electrical equipment.

Taking into account these data, when using a CO2 extinguisher in an enclosed space to fight a fire must be especially careful to avoid that an excessive concentration of carbon dioxide, coupled with the lack of oxygen consumed by the fire, can cause asphyxiation that carbon dioxide when used, is intended to displace oxygen.

The process of recharging a fire extinguisher must be carried out by a fire protection installation/maintenance company, as specified in RD 513/2017. No person who is not authorized and has the basic knowledge, can manipulate this type of containers.

How long is a fire extinguisher valid?

When when opening the cylinder for maintenance the agent is in bad condition. When the manufacturer recommends changing the powder after 5 years from the date of manufacture of the product.

How long is the useful life of a fire extinguisher?

A maximum useful life of twenty years from the date of manufacture is established for general use fire extinguishers. In the case of extinguishers with carbon dioxide (CO2) charge, the maximum useful life will be extended to thirty years.

What is the useful life of an extinguisher?

The useful life of an extinguisher is 20 years, although it should be taken annually to the company where it was purchased for a basic check and every 5 years it should be given maintenance, better known as stamping or hydraulic test.

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What are co2 extinguishers for

Carbon dioxide is stored at high pressure so that during discharge, in addition to “drown” the flame by displacing the existing oxygen, expands, lowering the temperature and freezing the fuel that has generated the flames. When we discharge a co2 extinguisher, we will cause a large white smoke due to the dry ice particles generated. Its high density, makes the Co2 displaces the air around the fire generating a suffocating atmosphere that will end the fire.

Before using this type of extinguishers in enclosed spaces, the room must be vacated. The maximum concentration of carbon dioxide that a human being can withstand is 6%. For this reason, special caution should be exercised when using these extinguishers. The discharge of Co2 can increase dangerously, to which should be added the shortage of oxygen caused by the fire to be extinguished. In the event of a concentration of 9% or more, a person could become unconscious in a short space of time.

By Rachel Robison

Rachel Robison is a blogger who collects information on court filings and notices.