Inert Gas


What are the benefits of choosing an inert fire suppression system?

How do inert gas systems extinguish fires? This is achieved by decreasing the ambient oxygen levels within the atmosphere from 21% to between 14% and 12%. This reduced level is below what is required to support combustion. However, ensuring the concentration level does not fall below 10% is an important factor, because oxygen levels lower that this is considered a danger to human safety. However, the protected should be evacuated before any discharge of the extinguishant commences.

The inert extinguishant is a clean agent and does not conduct electricity. The concentration levels are anything between 35-50% of the volume of the protected area and are made up of nitrogen and argon. The amounts of the nitrogen and argon will vary according to the manufacturer, and in one agent Carbon dioxide is added.

The inert gases are stored in cylinders under high pressure in a gaseous form and also discharges to the atmosphere in the same form. The cylinders can be stored close to the protected area but have the flexibility to be stored hundred of meters away in a convenient storage location.

The big advantage of inert gas systems is that they are environmentally friendly and generally have depletion Ozone levels of zero and this is the same for global warming potentials.

Typical applications for inert systems would be:

Data Centres
Archive Storage
Telecommunication Facilities
Control rooms
Shipboard machinery spaces
Computer rooms


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