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Unexploded Ordnance campaign underway at EA1

By: Tom Russell 14/03/2018 N-Sea

General Vessels Windfarms

Subsea service provider N-Sea is undergoing an Unexploded Ordnance (UXO) campaign at the East Anglia ONE offshore wind farm on behalf of ScottishPower Renewables.

The UXO clearance works commenced in December 2017 and includes inspection, identification and clearance on the array area and export cable route, located in the southern North Sea approximately 45km southeast of Lowestoft.

The workscope, which will be completed later in spring 2018 requires a multi-vessel approach in order to ensure completion in line with the timescale of wind farm construction.

The Noordhoek Pathfinder, Neptunus, Siem N-Sea and Siem Barracuda have each been utilised to date, using ROVs to de-bury, inspect and identify items on a ‘master target list’ identified from previous survey works. Additional ROV and dive vessels will be brought into the campaign as the work progresses.

A number of confirmed WW2 UXOs have already been identified during the project for later detonation on site. In addition, many items of debris and boulders have been identified for clearance.

Commercial Director Gary Thirkettle said: “The offshore renewables market has become an integral part of our business model, providing huge growth for N-Sea as part of our long-term strategic plans. We have undertaken numerous UXO projects within the sector and are proud of our involvement in this recent campaign for Scottish Power Renewables.”

East Anglia ONE is the first of four projects in the East Anglia region to begin construction. It is being realised solely by ScottishPower Renewables and is located approximately 45km east of Lowestoft, UK. The 714MW array will feature 102 SWT-7.0-154 direct-drive wind turbines, each with a capacity of 7MW.

Offshore construction is estimated to start in the coming months with the pre-piling work for the jacket foundations. Full commissioning is scheduled for 2020 and the project is expected to meet the energy demands of 500,000 British households annually.

For more information, please follow the links provided. Alternatively, click here to 4C Offshore's interactive map of offshore wind farms.

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Unexploded Ordnance campaign underway at EA1

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