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CO₂ (carbon dioxide) suppression systems

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CO₂ cylinder bank, manifold and control arrangement
Representative illustration of a CO₂ system cylinder and manifold arrangement.

About the system

Fast, residue-free CO₂ suppression for unoccupied or evacuable enclosures.

System provider
Özkartay
Extinguishing agent
Carbon dioxide (CO₂)

System scope

  1. Carbon dioxide suppresses fire by reducing oxygen levels
  2. It is electrically non-conductive and leaves no solid residue
  3. Nozzles, cylinders, valves, detection and warning are designed together
  4. Pre-discharge audible/visual warning and safety sequence are essential design inputs
  5. Used in unoccupied areas or where evacuation safety is ensured
  6. Considered for transformer, power, cable-gallery, motor, generator and control rooms

Frequently asked questions

Can a CO₂ system be used where people are present?

CO₂ is hazardous to people at extinguishing concentrations. It should therefore be used in unoccupied areas or spaces with verified evacuation, interlock and warning sequences.

Where is CO₂ used?

It is considered for transformer and power rooms, cable galleries, motor/generator rooms, paint booths, electrical control rooms and similar special enclosures.

How long does CO₂ discharge take?

Discharge time is determined by enclosure volume, fire scenario, design concentration and cylinder/nozzle calculations; source applications describe designs discharging in up to 60 seconds.

How is a CO₂ system maintained?

Cylinder fill and pressure, valves and release, nozzle/hose condition, detection-warning, leak tightness and scenario tests should be checked and recorded at least annually by an authorised team.

Design and installation guide

CO₂ (carbon dioxide) suppression systems: selection and application guide

CO₂ suppression may be designed for local application or enclosed-volume protection in suitable industrial processes. Extinguishing concentrations pose a serious hazard to people; access control, evacuation and safe operation are central to selection.

A CO₂ suppression system controls fire by reducing oxygen concentration and creating a cooling effect as the gas expands. It is designed for unoccupied areas or spaces that can be safely evacuated during discharge, such as transformer and power rooms, cable galleries, motor/generator rooms, paint booths, electrical control rooms, computer rooms and areas with sensitive equipment.

01

Engineering and commissioning steps

Selection considers the product function, the protected risk and operating conditions together. These steps support the site survey and quotation.

  1. Defining the protected space

    Establish local application or total-flooding needs with the process hazard and personnel access. Assess migration and potential accumulation in adjacent areas.

  2. Agent, piping and nozzle calculations

    Determine cylinders, agent quantity, pipe route and nozzle distribution using the selected system calculation method. Pressure or discharge data from one system is not transferred to another agent or model.

  3. Detection, evacuation and interlocks

    Design pre-discharge warning, evacuation, restricted access, manual controls and safe maintenance isolation together. CO₂ discharge is not planned as an operating scenario with people remaining in the protected area.

  4. Integrity and handover checks

    Verify required function tests, piping checks and process interlocks during commissioning. Re-entry follows authorised confirmation that the atmosphere is safe, with operating and maintenance records handed over.

02

Applications and site planning

These examples show why placement and equipment requirements can differ between facilities using the same product.

Unoccupied industrial processes

Site requirement
Local fire hazard and access to process equipment.
Application approach
Assess nozzle placement and access safeguards with process shutdown.

Suitable enclosed machinery spaces

Site requirement
Volumes where gas may accumulate and migrate to adjacent areas.
Application approach
Define total-flooding protection, evacuation and safe re-entry in the same engineering assessment.

03

Pre-quotation checklist

Scroll the table horizontally to view every column.

Pre-quotation checklist
Check itemProduct / applicationInformation to assess
AgentCO₂Hazard, system model and technical documentation
Protection boundaryLocal application or total flooding; design-dependentVolume, openings and adjacent spaces
Personnel safetyNo personnel in the CO₂ discharge areaAccess, manual controls and operating plan
CommissioningCalculations, installation and function testsProcess interlocks and safe re-entry

Gaseous protection requires more than naming an agent and selecting cylinders. We can define the facility scope through a coordinated survey, flow calculation, detection scenario and operating-safety assessment.

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