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NKT repairs BritNed cable

By: Tom Russell 15/02/2021 NKT

General Interconnectors

NKT has finalised the offshore repair of the 450 kV HVDC BritNed power cable system which connects the national grids of the UK and the Netherlands. The company was awarded a turnkey contract to bring the 450 kV mass impregnated (MI) HVDC power cable back into operation.

After the initial notification, NKT mobilised staff and equipment for localising the fault, de-burial and cut and seal operation onboard a subcontracted vessel. The damaged power cable section was found at approximately 100 km off the Dutch coast, at a water depth of 40-50 metres.

The repair works were then executed despite severe weather conditions by crews of cable-laying vessel NKT Victoria supported by DP2 Assister. The operation was executed within 29 days and the connector is now back in full service.

"We are very pleased with the result of the repair operation and look back on a very good cooperation with NKT," said Dennis Stufkens, Operations Director of BritNed.

"The uptime of interconnecting power cable systems is central to the transition to renewable energy in Europe, and we are proud to have demonstrated once again our repair preparedness by quickly mobilizing our skilled repair team and equipment. The operational success was ensured by an efficient collaboration of all parties involved, minimizing the outage time and bringing BritNed back into operation," said Axel Barnekow Widmark, Executive Vice President and Head of Service in NKT.

BritNed Development Limited is the owner and operator of the 450kV Interconnector. The 250km BritNed interconnector was jointly developed by TenneT (Netherland) and National Grid (UK). The HVDC cable was manufactured by ABB and installed by Global Marine systems. The cable first came to operations in April 2011.

For more information on interconnector projects worldwide, click here

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NKT repairs BritNed cable

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