A relatively large volume of the gas therefore needs to be released into the atmosphere to achieve this objective. Unlike Halon and halocarbons, inert gases are stored as high pressure gases and hence require a large number of high pressure storage cylinders with implications for space and weight.

Inert gases such as nitrogen can be used alone but inert gas mixtures (typically blends of nitrogen and argon) are also available. As these systems use natural gases which areobtained from natural sources they have zero ozone depletion potential.

There are Health and Safety implications for staff . particularly relating to the reduction in the oxygen component of the atmosphere once the system is discharged. It requires careful calculation to ensure that the concentration of the inert gas released is sufficient to control combustion yet not so high as to pose a serious risk to personnel. Health and Safety guidance is available from Gielle Srl on all halocarbon and inert gas systems