Femern A/S sets high standards for tunnel safety
Femern A/S will ensure that all users have a safe and secure journey through the world’s longest immersed tunnel for both for combined railway and road traffic.
Just as safe as open land
Statistically, the Fehmarnbelt tunnel will be just as safe to use as equivalent routes by road or rail on open land in Denmark, shows the company’s risk analysis. This is, among other things, because road traffic will be split into two separate tunnel tubes and the 18 km long tunnel section will contain no slip roads. Moreover, driving conditions will always be smooth, with the motorway constantly well lit. The rail traffic will be separated into two tunnel tubes, one for each direction of travel, and the design will ensure against derailment.
The traffic flow through the tunnel will ensure natural ventilation and fresh air. Moreover, the natural ventilation can be supplemented by mechanical ventilation from large fans, which is an important component in the safety concept.
The ventilators can blow in both directions in all the tunnel tubes. They will be controlled from the tunnel’s monitoring and control centre (Link Control Centre, LCC). The machinery is simple, reliable and powerful and will have the capacity to handle both normal conditions and critical situations, i.e. if, as a result of a fire in a vehicle, smoke should develop in the tunnel.
However, the ventilation system will not need to be in operation on a regular basis. Vehicles and trains will push the air in the tunnel out and suck fresh air in thereby ensuring air quality. The ventilators will be activated according to requirements, e.g. in the event of a slow traffic flow or if traffic comes to a standstill because of an accident.
Statistically, the Fehmarnbelt tunnel will be just as safe to use as equivalent routes by road or rail on open land in Denmark, shows the company’s risk analysis.
Did you know that...
... the tunnel is designed to withstand a fire at temperatures of at least 1350 degrees Celsius for three hours.
... the tunnel will be monitored from the tunnel’s control centre, LCC, which will be located near the portal building on the Danish side of the Fehmarnbelt. Train operations will be managed from the train traffic’s control centre, TCC, in Copenhagen. The centres are in contact with each other and staffed around the clock.