Gas Suppresion Systems

In order for the fire to occur, the flammable substances should reach a certain temperature and there should be sufficient amount of oxygen in the environment. In a clean environment, the oxygen content in the air is 20.9%. This rate should not fall below 16% for fire to occur. By reducing the oxygen content below 16%, the combustion reaction will slowly disappear. And if the oxygen content falls below 14%, the combustion ends.


 

Gas extinguishing systems extinguish the fire by reducing both the temperature of the environment and the amount of oxygen in the environment below the combustion limit. Since they offer flexible use options which don’t damage the places they are used and they can provide the use of the equipment in the areas after the extinguishing process, there are broad areas of use.

Gas Extinguishing Systems are widely used in:

 

  • Uninterruptible Power Supply (UPS) rooms

  • Computer, Server, Control rooms

  • Turbines (Hes, Thermal Power Plant, Wind Turbines)

  • Transformers

  • Electric distribution panel rooms

  • Archives and museums

  • Laboratories

  • Generators, compressors, ventilation units,

  • In Cable Galleries

  • Natural gas distribution stations

  • Floating and fixed platforms

  • Ships

In gas extinguishing systems, where the extinguishing agent configuration is very rich, HFC (Hydrofluorocarbon) group gases, Novec1230, carbon dioxide and inert gases are used as extinguishing agents.


 

Extinguishing materials such as HFC (Hydrofluorocarbon) group gases and Novec1230 extinguishing fluid, which have no electrical conductivity and which do not release waste after evaporation, which are volatile liquid or gaseous extinguishing agent , are called "Clean Gas Extinguishing Systems". Such agents reduce the ambient temperature to below the ignition temperature.

 

FM 200 (HFC227ea) ®

 

 

Heptafluoropropane (FM 200 (HFC227ea) ®) is one of the commonly used clean gas extinguishing system agents after the limitation of the use of halocarbon gases. Since it does not reduce the rate of oxygen at high rates, it can be applied in places where people are present. This agent is in liquid form with the pressurizing of nitrogen (N2) in the cylinders in which it is stored, and this N2 which is used in the pressurizing process helps the agent flow from cylinder to the nozzle. The FM 200 is discharged from the nozzles in the gas phase.

 

Heptafluoropropane (FM 200 (HFC227ea)) gas;

 

  • It is colorless, odorless and not conductive.

  • Does not harm ozone

  • Does not leave waste after discharge, does not require cleaning

  • Small footprint

  • Allows quick extinguishing (Discharge time 10 sec.)

 

• HFC-125


 

Pentafluoroethane (HFC-125); is a clean gas extinguishing system agent with the capacity to use the piping of the existing halocarbon system as its physical properties are close to that of the halocarbon gases. Since it does not reduce the rate of oxygen at high rates, it can be applied in places where people are present.

This agent is in liquid form with the pressurizing of nitrogen (N2) in the cylinders in which it is stored, and this N2 which is used in the pressurizing process helps the agent flow from cylinder to the nozzle. The HFC 125 is discharged in the gas phase from the nozzles.


 

  • Pentafluoroethane (HFC-125) gas;

  • It is colorless, odorless and not conductive.

  • Does not harm ozone

  • Does not leave waste after discharge, does not require cleaning

  • Small footprint

  • Allows quick extinguishing (Discharge time 10 sec.)

  • Can be stored in environments from -40 up to +54 C (advantageous in cold climates)

 

• FE13 (HFC 23)


 

Fluoroform FE13 (HFC 23); is a high pressure clean gas extinguishing system agent and therefore does not require any other container to be pressurized. Since it does not reduce the rate of oxygen at high rates, it can be applied in places where people are present.

 

 

Fluoroform FE13 (HFC 23);

 

  • It is colorless, has a distinctive smell and is not conductive

  • Does not harm ozone

  • Does not leave waste after discharge, does not require cleaning

  • It can be used safely in human spaces.

  • Among HFC (Hydrofluorocarbon) class gases, the safety factor is the highest for humans.

  • Nozzle can be used in single level up to 7.6 meters (25ft) in height

  • It can be stored in -40 to +54 C environments (It is advantageous in cold climates)

  • Allows quick extinguishing (Discharge time 10 sec.)

NOVEC 1230 ® (KETON)

 

 

3M (TM) Novec 1230; the extinguishing agent has become a preferred alternative extinguishing agent as it can be stored and transported in its liquid form. 3M ™ Novec 1230 is a proven clean gas extinguishing system that is environmentally friendly. The atmospheric lifetime is shorter than other HFC (Hydrofluorocarbon) class gases. 3M ™ Novec 1230 is pressurized with nitrogen (N2), and this N2 which is used in the pressurizing process helps the agent flow from cylinder to the nozzle.


 

3M ™ Novec 1230 extinguishing fluid;

 

  • It is colorless, odorless and not conductive.

  • Does not harm ozone.

  • Atmospheric life is short (5 days).

  • Does not leave waste after discharge, does not require cleaning.

  • Small footprint.

  • Allows quick extinguishing (Discharge time 10 sec.)

  • It has high quenching capacity.

  • Re-filling is easy.

  • It is liquid at room temperature.

  • Moving is easy.


 

Carbon Dioxide and inergent group gases extinguish physically. Such extinguishing agents extinguish the possible fires successfully as they are able to reduce the oxygen level of the applied site from 21% to 14% volumetrically (Most types of combustion can not create ignition at these low levels) and to absorb the heat in the environment with its cooling effect.

CARBONDIOXIDE (CO2)

 

The oldest and most common extinguishing agent used in gaseous fixed fire extinguishing systems is carbon dioxide (CO2) gas. Carbon dioxide (CO2) at atmospheric pressures is a colorless, odorless and non-conductive gas that can penetrate quickly and effectively to maintain space or volume. Its density is one and a half times the density of the air. It is not recommended to use it in the places where there are people because of both its suffocating effect and being heavier than air. Due to its sudden cooling effect, it should not be used in the places where there are delicate electrical and electronic devices; also in the human places due to its choking effect. It is the only extinguishing agent allowed to be used in local applications. Carbon dioxide (CO2) gas extinguishing system can be applied in low pressure and high pressure classes. In systems where high amounts of extinguisher are needed, low pressure carbon dioxide systems are used due to its high storage capacity.

 

Carbon dioxide (CO2);

  • It is colorless, odorless and not conductive.

  • Does not harm ozone.

  • Does not leave waste after discharge, does not require cleaning.

  • Applicable for local or volumetric extinguishing systems.

  • It has high extinguishing capacity.

  • Re-filling is easy.