Select Page

Reference Projects – Underground Facilities

We have extensive experience in fire safety and risk assessment of underground facilities. Below you can read about a selection of our projects. For more information don’t hesitate to contact us!
Citybanan, Stockholm
Stockholm City Line
Read More

About the Object
In the summer of 2017, the Stockholm City Line (Citybanan in Swedish) was inaugurated. The City Line is a 6 km long train tunnel for commuter traffic under the city between Karlberg and Stockholm South station. The City Line is comprised of a double track tunnel with a parallel service tunnel and two new underground stations: Stockholm City and Stockholm Odenplan. In total, the project has cost 17 billion SEK and from start to finish the project took just under 9 years.

How have we assisted the project?
Brandskyddslaget has worked on the fire and passenger safety in the project since 2002, when there were no clear laws or regulations for the construction. Brandskyddslaget worked to facilitate testing of fire technical systems and to conduct the large-scale first responder exercises.

We have worked as a subcontractor to larger contractors where we have been responsible for the building documentation within the project which has included both fire and passenger safety. The final client has been the Swedish Transport Administration (Trafikverket in Swedish) through the project Stockholm City Line.

Some examples of the development and challenges that were met throughout the three-year project include:

  • Development of a safety concept for the facility in operations and a safety and security evaluation of the tunnels.
  • Development of risk assessment concerning the safety and security of both the stations and tunnels.
  • Fire gas flow calculations using computational fluid design (CFD) including train movement for tunnels and stations.
  • Evacuation calculations with evacuation via escalators, through platform screen doors out of the trains plus calculation of toxic impact on evacuees, using so called Fractional Effective Dose (FED) calculations.
  • Collaboration with the tunnel’s evacuation through stations.
  • Parallel service tunnel that can be used for evacuation and response providing a robust and safe evacuation route every 300 meters.
  • Platform screen doors (so called PFA) along the platform to improved safety, not least related to suicide prevention, and to improve the indoor environment.
  • Lead a scenario exercise, including all relevant stakeholders in a full-scale event.
  • Digital measures to improve accident response including the development of a response plan for the first responders.
  • Combination of fire classification with protection against the threat of terror attacks.

Client: Trafikverket

Photo: SL


Contact

Björn Sundin
+46 (0)8 588 188 64
Send email

Norrbotniabanan
Norrbotnia Line
Read More

About the Object
Norrbotnia Line is a train track that is planned between Umeå and Luleå with an extension north to Haparanda. The course can be seen as a northerly extension of the existing Botnia Line.

How have we assisted the project?
Brandskyddslaget has developed a safety and security assessment of passenger safety in the Ersmark Tunnel on the stretch between Umeå and Dåva. The main economic driver identified in the analysis was the impact of the number of escape exits and their placement.

The safety and security analysis was conducted according to TDOK 2016:0231 and included both comparative and qualitative analysis and a quantitative risk assessment. Experience from a variety of other projects was used as input to the analysis including, for example, from the Strängnäs Tunnel, West Link, Botnia Line, Ådals Line, Varberg Tunnel, Söder Tunnel in Helsingborg and the Hallandsås Tunnel. The quantitative risk assessment included airspeed calculations, development of design fires, calculation of toxic impact in the case of a fire and the assessment of the frequency and potential consequences of different types of relevant incidents.

The work also included support for the project concerning a safety and security concept, response issues and the design of service and evacuation tunnels.

Client: Tyréns and Swedish Transport Administration


Contact

Niclas Åhnberg
+46 (0)8 588 188 85
Send email

Stockholms tunnelbana
Stockholm Underground
Read More

About the Object
In the 2013 Stockholm negotiations, it was agreed that the Stockholm Underground should be extended to meet the increased number of residential properties in Stockholm County.

A new organisation “Management of the Stockholm Underground Extension” was created and tasked with building three new underground lines: the Nacka-Söderort Line, The Arena City Line and the Järfälla/Barkarby Line. In total this will require approximately 20 km new tracks and 11 stations to be built. The project also includes a new depot and the delivery of new vehicles.

How have we assisted the project?
Brandskyddslaget, and our sister company Risktec have been commissioned to assist procurement related to fire and passenger safety and security and to provide risk assessment and project quality assurance. The project includes, for example, developing the facility specifications and to provide support in the design of technical solutions for both technical systems and building documentation.

We will also provide support concerning questions of project risks and risk assessment for environmental consequence analyses, safety, and security including fire safety during the building phase, systems for response planning during the building phase and coordination with the first responders.

Further, we work for the Stockholm Public Transport Management (Trafikförvaltning in Swedish) on performance requirements and inspections for their new underground tunnel vehicles C30.

Client: Management of the Stockholm Underground Extension


Contact

Niclas Åhnberg
+46 (0)8 588 188 85
Send email

BBS för vägtunnlar
FFFS for Road Tunnels
Read More

About the Object
Extensive work is presently underway to extend the road network in several of Sweden’s largest cities. In many cases this is made possible through the extension of tunnels and the majority of these are protected using a suppression system called FFFS – Fixed Fire Fighting System

The system has been designed and developed by Brandskyddslaget together with the Swedish Transport Administration.

How have we assisted the project?
Brandskyddslaget has provided technical expertise in sprinkler technology for the Swedish Transport Administration for many years. The work has included diverse tasks such as the development of a new concept for tunnel fire protection, testing of technical solutions and detailed design of sprinkler systems for specific projects.

The FFFS has specially designed nozzles and the choice of material has been made taking into account the specific environment in road tunnels. The installation is in operations in the Northern Link and is planned for the Stockholm Bypass and in Göta Tunnel in Gothenburg.

Client: Swedish Road Administration


Contact

Christian Mrotzek Becker
+46 (0)8 588 188 31
Send email

Share This