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Gas

Gaseous fire suppression is a clean fire suppression agent which protects sensible datas or documents.

Gas

Gaseous fire suppression system


Gaseous fire suppression is a term to describe the use of inert gases and chemical agents to extinguish a fire. Also called clean agent fire suppression. These agents are governed by the National Fire Protection Association (NFPA) Standard for Clean Agent Fire Extinguishing Systems – NFPA 2001 in the USA, with different standards and regulations in other parts of the world.

Typically, the system consists of: agent, agent storage containers, agent release valves, fire detectors, fire detection
system (wiring control panel, actuation signaling), agent delivery piping, and agent dispersion nozzles. Less typically, the agent may be delivered by means of solid propellant gas generators that produce either inert or chemically active gas.

Operating principle

There are four means used by the agents to extinguish a fire. They act on the “fire tetrahedron”:

  1. Reduction or isolation of fuel:
    No agents currently use this as the primary means of fire suppression.
  2. Reduction of heat:
    Representative agents: Clean agent FS 49 C2 (NAF S 227, MH227, FM-200), Novec 1230, pentafluoroethane (NAF S125, ECARO-25).
  3. Reduction or isolation of oxygen
    Representative agents: Argonite / IG-55 (ProInert), CO2carbon dioxide, IG-541 Inergen, and IG-100 (NN100).
  4. Inhibiting the chain reaction of the above components.
    Representative agents: FE-13,1,1,1,2,3,3,3-Heptafluoropropane, FE-25, haloalkanes, bromotrifluoromethane, trifluoroiodomethane, NAF P-IV, NAF S-III, NAF S 125, NAF S 227, and Triodide (Trifluoroiodomethane).

Main advantages of a gas fire suppression system

The most important advantage of the use of chemical gas is that it is safe for people and electronic equipment.
During fire fighting, gas is used in a concentration not to be harmful to human health and life. When using an inert
gas, concentration of oxygen in the room is reduced by 3%. Along with the fact that such a composition of the air
is not sufficient to continue the fire, it allows people who are there to breathe.

The use of chemical gas is also very advantageous in places of storage of expensive electronic equipment and
important documents. The most harmful effect that may occur in areas of fire is the possibility of a small drop
in temperature. In terms of data storage and carriers, installation of gas fire extinguishing is the most effective
way.

One of the advantages of gas extinguishing is the time used to extinguish the fire. The experimental results and
data on extinguishing of real fires show that the use of chemical gas prevents fire within 15 seconds.

Another advantage of the system is that it is compact and takes very little space for storage. In systems of gas fire extinguishing, extinguishing agent is stored in cylinders as a liquid. This system is reliable - because in a parallel manner used electric (leakage controldevice) and visual (with manometers) monitoring.

Ai Group's expertise of gas fire suppression system

Ai Group has extensive experience for many years as a designer and manufacturer of fire-fighting systems, also using gas as extinguishing agent. Ai Group is able to provide regarding every applicable regulation:

  • Inert gaseous fire suppression systems;
  • Novec 1230 gaseous fire suppression systems;
  • HFC227ea gaseous fire suppression systems;
  • Gaseous fire suppression equipment: pressure gauge, discharge nozzles, actuator fittment, bleed valves...

 

 


You have a project regarding fire protection and you are looking for a supplier with great expertise of industrial high-hazards? Do not hesitate to contact us  and one of our dedicated colleagues will contact you as soon as possible after receiving your request.
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