Oxygen Reduction — How It Works
Conventional fire suppression acts after ignition — discharging gas or water to extinguish a fire already burning. Oxygen Reduction Systems (ORS) take a different approach: they permanently reduce the oxygen concentration in a protected space to a level where fire simply cannot start.
Isolcell systems continuously generate nitrogen and inject it into the protected room, displacing oxygen from the normal atmospheric level of 21% down to 15% or lower. Most common materials — paper, wood, plastics, electrical insulation — cannot ignite below 15–16% O₂. The room remains continuously protected without any agent discharge.
At 15% Oв‚‚, acclimatised personnel can work normally. Access protocols and oxygen monitoring ensure safe occupancy throughout. When a door opens, the system compensates automatically by increasing nitrogen injection.
