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Contracts & Tenders, Grid Connection
German transmission system operator TenneT Offshore GmbH has launched a qualification system for the provision of floating units or vessels for nearshore cable failure repairs in the North Sea and the Wadden Sea. In case of a cable failure, TenneT will choose vessels as per the predefined scenario for the applicable repair preparedness plan. The […]
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By Jakub Vastmans, Senior Manager Service Product Management at NKT Over the past decades, thousands of kilometres of high-voltage submarine cables have been installed, making them a critical element of our electricity infrastructure. Most prominently, they enable the transmission of offshore-generated wind energy by serving as array and export cables. However, the main application of […]
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Grid Connection, Wind Farm Update
National Grid and Ørsted have begun mobilizing teams that will work on replacing limited segments of the Block Island wind farm and sea2shore transmission cables to achieve greater burial depths. Construction-related activities will be ongoing throughout the fall and winter, with an anticipated completion date by the end of May 2021. The effort includes replacing […]
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By Jakub Vastmans, Senior Manager Service Product Management at NKT In case of a submarine cable fault, many components necessary for a repair can be obtained from external contractors (e.g. fault-finding equipment, jointer team, cable vessel). The cable operator can further reduce the associated risks by setting up Repair Preparedness Plans (RPPs) and Service Level […]
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Contracts & Tenders, Grid Connection
Danish transmission system operator Energinet has issued a contract notice for the provision of power cable repairs both onshore and offshore. The scope of the framework agreement covers preparedness for supplying repair work (jointing), manpower, standby fee, tools, and spare parts for the repair of the cables. The voltage rating of the cables is between […]
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Business & Finance, Grid Connection
Global Offshore has signed an export cable repair framework agreement with Balfour Beatty Investments and Equitix (BBE), covering the Humber Gateway, Gwynt Y Môr and Thanet Offshore Transmission Owners (OTFOs). The framework agreement, which began in February, covers a total of 152km of export cable. The service is supported by Global Marine Group’s fleet of […]
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By Jakub Vastmans, Interim Director Service Product Management at NKT For decades, the power cable industry has been pushing the boundaries of high-voltage (HV) submarine power transmission. Over the years, new insulation technologies have emerged, voltage levels have increased, protection methods have improved, and novel monitoring technologies have been developed. The objective is […]
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Figure 1. Submarine cable overboarding during repair operations Given the inherent risks associated with submarine power cables, it is essential for their operators to have a rock-solid contingency plan for dealing with the rare event of a cable failure. As those plans become increasingly common and repair timelines are condensed, the criticality of flawless execution […]
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Grid Connection, Operations & Maintenance
Transmission system operator TenneT has awarded Jan De Nul with a framework agreement for repairs of TenneT’s offshore high-voltage cables in the German Bight. Under the terms of the agreement, Jan De Nul will mobilize in the event of high-voltage cable system faults or failures within the contractual period of 24 months. The agreement also […]
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Operations & Maintenance, Vessels
VBMS has recently repaired two inter-array cables and one export cable in the Thames Estuary and the Irish Sea. VMBS used Stemat 82 to carry out the inter-array cable repairs in the shallow waters of the outer Thames Estuary due to its 8-point mooring system and 2.3m depth. The repair of the export cable was […]
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Grid Connection, Operations & Maintenance, Technology
James Fisher Subsea Excavation (JFSE), part of James Fisher and Sons plc, is providing equipment and personnel to VBMS for several concurrent offshore wind projects.
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ASV Pioneer, an accommodation barge managed by Dalby Offshore, is on its way to Northern Germany to carry out cable repair work for a major German client, the company reported, leaving the new client unnamed. The vessel has undergone refit in Gdansk in Poland at the end of 2015, after completing cable remediation work on behalf of Norddeutsche […]
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Danish grid operator, Energinet.dk, expects the cable connecting Anholt offshore wind farm with the grid to go online by 26 March. Energinet.dk’s subcontractors managed to cut out the faulty section of the cable and make a connection at the one end of the replacement cable. However, due to bad weather, the second connection will have […]
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Business & Finance, Grid Connection, Operations & Maintenance, Wind Farm Update
The cable connecting Anholt offshore wind farm and the Danish power grid, which was out of operation from September 30th, is now repaired. Energinet.dk announced the news on its official website and added that the Anholt wind turbines can again send power to land. The failure occurred on Tuesday, September 30th at 8:35am, after which Energinet.dk […]
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The cable repair barge ‘Vetag 8’ is in Liverpool waiting for its next job on wind energy project located offshore Barrow-in-Furness. Along with the two support tugs ‘MTS Valiant’ and ‘Multrasalvor 3’, the barge will be mobilized in the Lune deep/Heysham lake area to repair the damaged West of Duddon Sands export cable. All of […]
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Grid Connection, Operations & Maintenance
Since May 12, the Lillgrund offshore wind farm has been standing still. The work to repair the export cable – which transmits the electricity from the wind farm to the substation on land – is underway. “Our focus is to replace the damaged section of the cable as soon as possible and get the production […]
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Pharos Offshore Group has completed cable repair and burial for the London Array Offshore Wind Farm on a section of damaged subsea export cable. Pharos delivered a work package with the rapid mobilisation of engineering, fabrication and operational teams to locate, recover, re-lay and re-bury the power cable off the Kent coast. The 800mm² HVDC […]
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Grid Connection, Operations & Maintenance, R&D, Technology
Subsea power cable installation specialists VBMS and High Voltage engineering company EDS have launched their Cable Integrity Solutions including the “Prepare to Repair” framework which is said to allow cable repairs to be carried out up to 70% faster.
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Energinet.dk has started the repair work on Anholt offshore wind farm export cable. The Danish transmission system operator is replacing two sections of the cable, the first 400 meters of the submarine cable from Grenå and the last 4 km before the substation. To remind, the 400MW Anholt offshore wind farm went offline on 21 […]
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VBMS has completed the repair of an inter-array cable at Trianel Windpark Borkum phase 2. The scope of work included the removal of the defective cable, and installation, burial, terminations and testing of a replacement cable which was completed in less than 48 hours, from arrival to departure. The works were executed in the German […]
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Grid Connection, Vessels, Wind Farm Update
Balfour Beatty has contracted VBMS to undertake a repair of Gwynt y Môr export cable. For the job in the Mostyn area, VBMS has utilised cable laying vessel NDurance, which will be working on the site by the end of May / early June dependent upon weather delays. David Brown, the project manager at Balfour […]
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Grid Connection, Operations & Maintenance
Working under a joint venture for NSW, Osiris Marine Services & Nordic Offshore Marine mobilised the DP1 barge the Atlantis with a full survey/diving/cable repair complimented by subcontractor Reef Subsea Dredging & Excavation’s twin R2000 shallow water controlled flow excavation tool. The East West Interconnector Project (EWIP) involved the installation of two HVDC and a […]
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Thanet offshore wind farm export cable is being repaired, says BBC. Jason Ormison, the head of media relations, said that they are still exporting power on a limited basis, and that they expect to return to the full capacity next month. The Thanet project is located approximately 12 km off Foreness Point in water depths […]
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In November, Piriou has presented two new vessel designs for the offshore wind sector: a cable laying vessel designed to install and repair both fiber-optical and energy cables, and a hydrogen-powered crew transfer vessel (CTV). The 100-metre cable-layer will be capable of installation of wind farm cables as well as of cable repair on the […]
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Operations & Maintenance, R&D, Technology
The Offshore Renewable Energy (ORE) Catapult has invited the offshore wind sector to sign up to a world-first data collection platform that aims to vastly reduce subsea cable failures. ELECTRODE will track cable failure trends and service downtime, as well as the effectiveness of current methods of monitoring, detection and response. Subsea cable failures account […]
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Contracts & Tenders, Grid Connection
The Pipeline Repair and Subsea Intervention (PRSI) Pool is seeking providers of contingency equipment and services for jointing of high voltage subsea cables. The PRSI Pool is a cooperation of operating companies organized as a non-profit membership club. The pool includes 20 companies. Some of these companies such as Equinor, Statnett, Aker BP, Shell, and […]
