Smulders, a leading manufacturer in the offshore wind industry, in a joint venture with Sif, is set to produce 64 Transition Pieces (TPs) for the He Dreiht offshore wind project. Located within the German Exclusive Economic Zone (EEZ) of the North Sea, this ambitious project involves the operation of 64 Vestas 15 MW turbines, contributing to a total grid capacity of 900 MW. To ensure the accuracy and precision required for the successful assembly and installation of these massive components, Smulders enlisted RSL to perform the initial dimensional control work. This case study explores the critical role RSL played in the early stages of the He Dreiht project, highlighting the importance of dimensional accuracy in offshore wind energy development.
The He Dreiht offshore wind farm is a major renewable energy project situated approximately 90 kilometers north of Borkum Island and 110 kilometers west of Helgoland Island. The wind farm, upon its full commissioning expected in the second half of 2025, will be a significant contributor to Germany's renewable energy portfolio. The total weight of the 64 Transition Pieces manufactured by Smulders and Sif is approximately 36.3 Kton, with production scheduled for completion in the first half of 2023.
To ensure the Transition Pieces were fabricated with the utmost precision, Smulders engaged RSL to carry out the initial dimensional control works. This task was crucial as it laid the foundation for the accurate assembly of the offshore transition pieces being fabricated. RSL’s scope of work included:
Measurement of Set-Up Jigs: RSL was responsible for measuring all set-up jigs, including those for the boat landing, boat landing ladder, service platform ladders, and access ladders. These measurements were critical to ensure that all components would fit together seamlessly during the final assembly.
Pre and Post Weld Surveys: RSL conducted pre and post weld surveys on the majority of the transition piece accessories, such as ladders and boat landings. These surveys ensured that all welded components met the necessary specifications and would perform reliably under the harsh conditions of offshore environments.
Setting Out Tower and Block Locations: RSL also played a key role in setting out all the tower and block locations, including the final assembly of vertical tower cranes. Accurate positioning of these elements was vital to the structural integrity and operational efficiency of the transition pieces.
