Coming from Germany, where they were assembled, the ventilators arrived by special convoy from a storage area in the Paris region.
They were unloaded and positioned by crane on the first level of the station, before being pushed into their final position under the station's future forecourt. Each fan is fitted with a propeller 2.24 m in diameter and provides an individual extraction flow rate of 150 m3/s thanks to a motor with a mechanical power of 355 kW. Each of the fans weighs 6.4 tonnes.More generally, the ventilation of metro tunnels is essential to ensure thermal and hygienic conditions, but also to allow smoke extraction from the infrastructure in the event of an incident. Given the importance of the functions performed, it was decided to install two fans in such a way as to guarantee the expected objectives of the installation even if one of them was unavailable.
The Egis teams are responsible for project management of tunnel ventilation as part of the Egis-Setec consortium responsible for project management of the systems on lines 15 South, 16 and 17 of the Grand Paris Express.
On line 16, Egis is also working with Tractebel on the project management of infrastructure, which includes tunnels and stations such as the one at La Courneuve - Six Routes.This station will be served by lines 16 and 17 and will connect with the T1 tramway and several bus lines. Just 500 m from the RER B station, it will serve the town centre area and the Parc Georges-Valbon, with a population of 28,000 within a one-kilometre radius. More than 34,000 passengers will use the station every day from 2026, when it is due to open.
The station's architectural style is a blend of industrial, to recall the town's history, and plant, due to its proximity to the departmental park; red bricks present in the concourse will blend with the façade and roof, both of which will be planted with vegetation.
