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DOC to oversee cable work at Trianel Borkum II

4C Offshore | Tom Russell
By: Tom Russell 20/08/2018 DOC
Starting at the end of August, Deutsche Offshore Consult GmbH (DOC) will commence construction supervision for the inner array cable installation at Trianel Windpark Borkum II on behalf of Trianel Windkraftwerk Borkum II GmbH & Co. KG.

Twelve to fourteen representatives will be deployed for the project to provide support during cable laying, pull-in and termination & testing at the wind farm.

"Supervision of cable production and wind farm cable installations is one of DOC's core competencies, and we are happy that the joint venture Trianel Windkraftwerk Borkum II selected us for this task,"
said Oliver Spalthoff, Managing Director of Deutsche Offshore Consult GmbH.


DOC's current task of supervising the construction works at TWB II with a focus on the inner array cable installation will start with cable loading and the necessary preparatory work for the cable pull-ins at the substation as well as on board the cable laying vessel
Seaway Aimery.

The subsequent cable laying and burial works will then be carried out by
Seaway Aimery and Seaway Moxie. The cabling consists of a total of four loops. The inner array cables are magnetised so that they can still be located once they have been laid and buried.

Quality assurance and communication with the project office on land are also part of DOC's work package. Installation and commissioning of the wind turbines at TWB II is scheduled to be completed by the autumn of 2019.


Irina Lucke, Technical Director of Trianel Windkraftwerk Borkum II GmbH & Co. KG, welcomes the construction supervision of the inner array cabling by DOC: "The inner array cabling is the nerve system of the wind farm. A high level of competence and excellent quality assurance is crucial. We are pleased to have DOC by our side as a reliable and highly specialised project partner."


A total of 32
Senvion 6.2 M152 offshore wind turbines, each with an output of 6.33 MW, will be installed at Trianel Windpark Borkum II. The wind farm is located approximately 45km north of the island of Borkum and will have an output of 200MW.

It is located in the direct vicinity of
Trianel Windpark Borkum I which consists of 40 turbines and an output of 200MW has been in operation since summer 2015.

Companies behind the project include EWE AG with a share of 37.5% and a joint venture of the power utility of the city of Zurich with 24.51%.

The Public utilities cooperation, Trianel, together with 17 municipal utilities from Germany hold a share of 37.99%. The total investment for the
Trianel Windpark Borkum II offshore wind farm amounts to around EUR 800 million.

For more information on subsea cable activities in offshore wind,
click here.

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