CO₂

CO₂ is the only gaseous agent where the design rules specifically provide guidance on the protection of deep seated hazards. Total flooding or local application systems are designed to meet the requirements of NFPA 12 or BS5306- 4 and are specifically designed using hydraulic flow calculation software. The system is VdS approved and components meet the requirements of EN12094 and Pressure Equipment Directive (PED).

High Pressure Carbon Dioxide Systems are especially effective for non-occupied hazards. Whatever the application, from cylinders to nozzle, each system is custom-designed for your specific fire hazard. High pressure systems use individual storage cylinders that can be manifolded together for rapid simultaneous discharge. Cylinders valves can be operated automatically or manually, and either locally or remotely using electric, pneumatic or mechanical actuators. To help ensure safety, all personnel must be trained to the safety and operational aspects of the CO₂ system.

Carbon Dioxide is the original "clean" agent that suppresses fire without leaving behind an agent to damage sensitive equipment, and because there is no agent to clean up, you are back in business faster. Johnson Controls offers both High and Low pressure systems.

Carbon Dioxide is a plentiful, non-corrosive gas that does not support combustion nor react with most substances. It is commonly compressed to the liquid state for storage in high pressure cylinders or  low pressure bulk storage tanks. Upon release, it discharges under its own pressure giving the appearance of steam as its low temperature crystallizes water in the air.
For fire suppression purposes, the discharge is designed to raise the carbon dioxide concentration in the hazard. This removes the free oxygen which supports combustion and results in fire extinguishment.

The resultant’s lack of free oxygen dictates that total flooding hazards are evacuated immediately prior to system discharge and carbon dioxide atmospheres produced by local application discharge must be avoided by personnel until the area has been vented and declared safe to return to work.