en.Wedoany.com Reported - DNV, as an independent energy expert and assurance provider, has completed independent verification for Femern Link Contractors (FLC) of the advanced lifting equipment used in the Fehmarn Belt immersed tunnel project, which is responsible for precisely installing prefabricated tunnel elements onto the seabed.
This 18-kilometer-long immersed tunnel connects Denmark and Germany, serving as a combined road and rail link. The first 217-meter-long tunnel element was submerged into its designated position in May 2026. Immersed tunnels are constructed by floating large prefabricated elements to the site and then sinking them into pre-dredged trenches on the seabed, ultimately forming the underwater structure.
The installation of the tunnel elements relies on a highly specialized lifting system capable of positioning heavy concrete elements onto the seabed with high precision under marine conditions. DNV's verification covered the lifting equipment installed on the immersion pontoons IVY 1 and IVY 2, spanning the design, manufacturing, and commissioning phases. This included technical compliance reviews and safety performance assessments prior to operation, culminating in the certification of the entire lifting system.
Marte Riiber de Picciotto, Service Area Manager at DNV Energy Systems, noted that the project involves large-scale lifting technology and high-precision operations in a dynamic offshore environment. Her team's task was to independently confirm, before the lifting system was used for tunnel installation, that it met the established safety and performance requirements.
This independently verified lifting equipment is a core component of the tunnel installation process and is crucial for ensuring installation readiness. Independent verification not only enhances confidence in equipment reliability but also contributes to safe execution during offshore operations. Close collaboration between the DNV and FLC teams was key to addressing the technical complexity of the project, with DNV providing technical reviews, site inspections, and certification services conducted in parallel with construction and commissioning.
Prajeev Rasiah, Senior Vice President and Regional Director for Northern Europe at DNV Energy Systems, stated that this collaboration builds on DNV's long-standing experience in testing, inspection, and certification. By providing independent verification for complex lifting equipment and offshore operations, DNV supports major projects in achieving safety, quality, and reliability goals.
Femern Link Contractors (FLC) is a joint venture comprising VINCI Constructions Grands Projets (France), Aarsleff (Denmark), Max Bögl Stiftung & CO KG (Germany), BAM Infra B.V and BAM International B.V (Netherlands), Wayss & Freytag Ingenieurbau AG (Germany), Solétanche-Bachy International S.A.S (France), and DEME Infra NV and DEME Dredging NV (Belgium).
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