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Fehmarnbelt Fixed Link

Tunnel linking Scandinavia and Europe

FEM Consult (Joint Venture between ÅF – Hansen & Henneberg A/S and Pöyry Infra GmbH) has since 2012 been Femern A/S’s E&M consultant for the design and tender of the electrical and mechanical systems for the Fehmarn Belt Tunnel; a 18 km long submersed tunnel between Denmark and Germany. The tunnel consists of two tunnel tubes for rail, two tunnel tubes for road and a central gallery between the road tubes. The assignments have included assessment of design basis, specification of design requirements as well as requirements for verification, execution and maintenance. The assignment further includes an option on test, inspection and follow-up on the E&M systems.

Services: The Electrical & Mechanical systems include:

  • Tunnel ventilation
  • Firefighting systems
  • Drainage
  • Access facilities and tunnel doors
  • Electromechanical systems
  • HVAC
  • Power supply and cable support
  • EMC, Earthing and Bonding
  • Tunnel lighting and architectural lighting
  • SCADA
  • ITS - Intelligent Transportation Systems
  • Communication systems
  • Detector systems
  • Access control system
  • Installations in control rooms
  • Building installations

Furthermore, the assignment covers

  • RAMS management
  • Risk management
  • Interface management
  • Assessment of safety concept
  • Planning of operation and maintenance of E&M systems
  • Technical support for Femern A/S in connection with ventilation and safety in the case of fire and fire fighting in connection with Femern’s authority management.

In relation to the requirement specifications, RAMS requirements have been developed for the parts of the system, which enters into the railway connection in order for the contractor to produce design and documentation to comply with the overall RAMS requirements for the tunnel. Additionally, the assignment has included responsibility for coordination of interfaces in correlation with projects for tunnel civil works, portals, and railway systems. 3D modelling has been used for space coordination and coordination with the civil works project.

The interface towards Third Party included negotiation of power utility supply to the Link on both German and Danish side with the responsible utility companies, including detailing of substation layout, physical constraints, etc.

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