Door Fan Test
Gaseous fire suppression systems discharge a
predetermined quantity of a specific mixture inside a
given space so as to achieve uniform extinguishing
concentration; the quantity of product chosen depends
on the size of the room and the concentration required
to ensure successful fire suppression.
The air-tightness of the room where a gaseous fire suppression system is in place is an essential prerequisite for the efficiency of the fire suppression system itself. Air-tightness can be checked with the Door Fan Test in compliance with ISO 14520-1. The test therefore checks the aptitude of the room to be protected to prevent the creation of an air flow through the boundary walls in the presence of a pressure gradient between inside and outside, obtaining a residence time of the extinguishing mixture in the volume which must comply with the minimum project limits.