There are various gases available as extinguishing agents. The choice depends on the design of the fire suppression system according to the following factors: the risk to be protected, the characteristics of the facilities, and the people’s exposure to the gas as it is discharged.
Gases are better suited to protect electrical equipment, computer rooms, telephony switches, electrical power generators, rotary printing presses, paint rooms, and data and paper files.
They may provide total flooding or localized protection, depending on the case and the extinguishing agent used.
Localized protection refers to those cases in which the risk to be protected is in an open space. In such scenario, hypothetical volumes and additional discharges of gas are considered, together with the risk-targeted discharge, so as to swiftly suppress the fire.
Total flooding is the method used to protect closed spaces. Certain concentrations and discharge times, which are standardized depending on the risk to be protected and the extinguishing agent used, should be achieved.
The main extinguishing agents are:
- INERT GASES
- CARBON DIOXIDE CO2
- CLEAN GASES – HFC- 227ea (FM-200)