Which Inert Gas is used in Data Centre Fire Suppression Systems?

Not all Inert fire suppression system gasses are equal. Data Centres like other mission critical operations require the gas system to extinguish the fire of a individual server / rack or UPS whilst allowing other servers to operate unabated.

Inert gasses benefit from putting out fires without damaging equipment. There is also no clean up required of the gas system after they put out a fire.

There are several different kinds of gases that can be used to extinguish a fire. Some of the most common gases used in fire suppression systems are:



INERGEN is a mixture of three inert, naturally occurring gases: 52% nitrogen, 40% argon, and 8% carbon dioxide. As INERGEN is derived from gases present in the earth’s atmosphere, it exhibits no ozone depleting potential, nor does it contribute to global warming.

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ARGONITE is an inert gas blend of argon and nitrogen, which occur naturally in the environment. With zero ODP, zero GWP and zero atmospheric lifetime, it has excellent environmental properties. A typical design concentration of 40% will reduce the oxygen level to 12.5% within 60 seconds. The space requirement for inert gas storage cylinders is greater than that needed for chemical agents The cylinders are mounted in rows and may be stored in any suitable location, even over 100 metres away from the protected space.

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Nitrogen is inert gas naturally present in the atmosphere consisting of 100% Nitrogen, therefore its green-house effect is nil and its ozone layer depletion potential is zero. It is chemically inert, non-conductive, colourless, odourless and flavourless.

As nitrogen is lighter than air is is ideal for small rooms such as comms rooms or electrical rooms where leakage is an issue and other gasses would not pass a room intergrity test.

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