RPS Fire And Security recommend Inert gasses which have become a good choice as they are the most green of all of the Clean Agents. Inert gasses are defined as using one or more of the gasses Nitrogen, argon, or helium.

CO2 is also found in one of the inert gas blends. Inert gasses work by removing the oxygen in the hazard to a point where it will not support a fire, but still high enough to support life. Design considerations when using inert gasses are pressure venting and volume. It is critical to design the system to achieve the correct concentration

 

The air we breathe has approximately 21% of Oxygen. Oxygen is the key factor in sustaining a fire and the key factor in keep us alive too. By removing the oxygen, we will certainly extinguish a fire, but that comes with obvious problems.

How do we sustain life at the same time? Fires need more than 15% Oxygen to combust. Anything below this level of oxygen will not be enough for a fire to sustain combustion. Luckily, we only need 12% plus of oxygen to survive and this is where the answer lies