Ventilation improvement testing in the métro system
Aeraulic testing may be performed on several mechanical ventilation stations. The tests involve measuring the air displacement rate during the application of various emergency ventilation scenarios.
When and where will the next tests take place?
The next tests will occur during the night of August 16 to 17 between the following stations:
Papineau and Frontenac
Préfontaine and Joliette
Pie-IX and Viau
Mont-Royal and Sherbrooke
Laurier and Mont-Royal
Berri UQAM and Jean-Drapeau
Questions and answers
You might hear a low humming noise, if your home is located near one of the ventilation stations.
For the tests to obtain conclusive results, the métro must not be operating at the same time, as the movement of the trains would displace the air and distort the data.
Mechanical ventilation stations serve three essential purposes:
Comfort ventilation: Regulates the ambient temperature for transit users by exchanging air between the métro system and outside.
Night-time ventilation: Supplies fresh air for night workers carrying out routine maintenance.
Emergency ventilation: In the event of an incident, allows for smoke control so that transit users can evacuate safely by the nearest métro station and emergency first responders can access the site with no obstructions.