5-2 September 2004
Argonite
®
Engineered Fire Suppression System
38-KFSARG-000
5-2 EXTINGUISHING EFFECT
Argonite is a 50/50 mixture of Nitrogen and Argon (N
2
/Ar). When Argonite is discharged, an
inert atmosphere is created in the protected hazard. Within a short time, the fire will be suffocated
as the oxygen content will decrease from the normal 20.9% to 15 to 10% (depending on the
flammables involved).
For most flammable liquids and solid materials, a 15% oxygen level is the lowest limit at which
a fire can be sustained; however 30% safety factor requirements result in the 12.5 to 13%
oxygen level. A 12% oxygen level is the lowest limit acceptable for personnel occupancy in the
protected hazard/room.
Note: In order to achieve extinguishment of some materials, it is necessary to lower the
oxygen level below 10%. These systems require special safety precautions.
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