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Conbit Awarded Lot 1 Contract for ICCP System Supply and Commissioning at SylWin alpha Offshore Converter Station

February 5 2025

Conbit, a specialist in engineering and executing offshore solutions, is proud to announce that it has been awarded the contract for the supply and commissioning of an Impressed Current Cathodic Protection (ICCP) system at the SylWin alpha Offshore Converter Station, operated by TenneT . This project forms part of the broader ICCP Retrofit initiative at SylWin alpha, aimed at ensuring long-term corrosion protection for critical offshore assets.

The scope of work (SoW) for Lot 1, entrusted to Conbit, encompasses the design, delivery, and above-water installation of the ICCP system, along with all major construction components. To execute this project, Conbit has partnered with Deepwater Europe Ltd., which will supply its innovative RetroBuoy ICCP system. This cutting-edge solution is specifically designed to provide reliable and long-lasting cathodic protection for the substation’s jacket structure, ensuring a target operational lifetime of at least 25 years for all components.

Conbit’s responsibilities also include training TenneT service group members on the system’s operation and interpretation, as well as ensuring the system meets certification requirements from Lloyd’s Register (LR) in compliance with BSH standards.

The new ICCP system will feature a human-readable interface for monitoring protection levels, which will range between -800 mV and -1100 mV, verified by reference anodes. These advancements will play a critical role in maintaining the structural integrity of the SylWin alpha Converter Station.

A Commitment to Excellence in Offshore Wind

Conbit's Commercial Director, Bram van Oirschot, commented on the significance of this award:

"Conbit has established itself as a trusted partner for upgrading, maintaining, and modifying offshore wind assets, particularly substations. By integrating Deepwater Europe Ltd.’s RetroBuoy system into our solution, we are ensuring that TenneT benefits from proven, innovative technology. This project underscores our commitment to enhancing current offshore wind facilities and addressing market trends in upgrading aging offshore infrastructure."

About the SylWin alpha ICCP Retrofit Project

The project is divided into two lots. Lot 1, led by Conbit, focuses on the ICCP system's design, delivery, and above-water installation. Lot 2, awarded to another contractor, covers vessel charter and subsea installation.