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.
