Carbon dioxide (CO2) is a non-corrosive, odorless, colorless gas. During discharge, it presents as a white fog; it does not dirty or otherwise negatively affect the materials with which it comes into contact.

The principle of extinguishment is dual: CO2 acts by suffocation or oxygen dilution, reducing the concentration of the oxygen present in the area, and by the cooling caused by the rapid expansion of the gas.

CO2 must not be used for protecting normally-occupied areas, since inhalation can cause asphyxia even at low concentrations. Furthermore, visibility is greatly reduced during discharge due to the formation of CO2 fog. This extinguishing agent can be used in normally-unoccupied areas if suitable safety devices are installed.

After use of the extinguishing system, the area must be adequately ventilated; remember that since carbon dioxide is heavier than air, it accumulates in low-lying areas.


Why Carbon Dioxide?

Carbon dioxide is an effective fire suppression agent applicable to a wide range of fire hazards. Carbon dioxide works quickly, with no residual clean-up associated with a system discharge which translates into minimal business interruption.

Other benefits of carbon dioxide fire protection system include:

  • Fast and Effective – within seconds, CO2 penetrates the entire hazard area to smother the
  • Electrically non-conductive – for a wide range of applications.
  • Versatile – CO2 is effective on flammable and combustible materials and approved for Class A, B, and C
  • Environmentally friendly – because carbon dioxide is naturally found in the atmosphere, there is no environmental

CO2 is suitable for extinguishing fires involving certain types of materials and equipment such as:

  • Flammable liquids and materials
  • Flammable
  • Electrical and electronic
  • Flammable materials such as wood, paper, textiles

CO2 cannot extinguish fires involving certain types of materials such as:

  • Chemicals containing
  • Metals and chemicals which react with CO2, e.g. alkaline metals and metallic

Some of the many fire-fighting applications for which CO2 is suitable are listed below:

  • Flammable liquid storage
  • Quench
  • Mixing
  • Spray
  • Turbine driven
  • Electrical
  • Dust
  • Engine

CO2 systems use intelligent, reliable, and fast acting controls to quickly sense a fire before it can cause costly damage to your property. Carbon dioxide gas has a high rate of expansion which allows it to work fast. When applied to a fire, CO2 provides a heavy blanket of gas that reduces the oxygen level to a point where combustion cannot occur. Since carbon dioxide is a gas, there is no clean-up associated with a system discharge – which means minimal business interruption.

CO2 systems are designed, installed and maintained according to ISO 6183 (Fire protection equipment) standards.

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