Trelleborg has been awarded a contract by Petrofac for its first floatover installation of an offshore converter platform - BorWin3 wind farm project.
The high voltage direct current (HVDC) converter station is located nearly 130 km off the German coast in the North Sea.
Siemens will supply the HVDC transmission technology, while Petrofac will be responsible for the construction and installation of the platform.
Vincent Tan, sales and marketing manager for Trelleborg’s engineered products operation, said: “BorWin3 is only the third wind farm converter project in the world to utilise floatover technology, so it is a significant project not only for Trelleborg, but the industry too. For the installation of the 18,500 metric tonne topside onto the substructure, we have been contracted to supply six sets of leg mating units and the same amount of deck support units.”
The assembled leg mating units (LMUs) can be installed either on the topside or substructure. In addition, deck support units (DSUs) are fixed on the barge that will transport the platform's topside to its site offshore. These combat the destabilizing effects of adverse weather and sea conditions during transport.
The converter is designed to transmit 900 MW of wind power. Trelleborg will begin fabrication of LMUs and DSUs with immediate effect and its solutions are scheduled for delivery in 2018. The entire project is due for completion in 2019.