City Service Tunnel, Helsingin Väylä Oy

Customer profile

The new service tunnel is the main thoroughfare for delivery vehicles carrying supplies to stores downtown Helsinki. 
It also provides access to underground car parks.


Underground, the main danger from fire is heat build up. Also, smoke can rapidly fill escape passages. 
For the KeHu tunnel, there was also the risk of smoke spreading above ground because of the access points to stores.

HI-FOG® solution

In the public tender, HI-FOG® came in with the lowest price tag. The low water consumption and excellent temperature control easily met the fire protection requirements. The zone-based fire suppression was an absolute must to the customer. In addition to the new service tunnel, HI-FOG® protects the connected 25-year-old Kluuvi tunnel, technical rooms and fire doors at store access points.