dws-bam-blyth-gravity-base-first2-770pxThe first of five floatable wind turbine foundations has left its construction dock on the Tyne river on route to its final destination, the Blyth wind farm on the North Sea.

Here the first concrete gravity based foundation (GBF) will be positioned and submerged onto the seabed to provide the foundation for the installation of a wind turbine. It will be the first time this ‘float and submerge’ method will be used for offshore wind turbines.

The foundation left the Neptune dry dock on 11 July. It is designed and build by Royal BAM Group and the technology has been developed in close cooperation with Van Oord.

dws-bam-blyth-gravity-base-tug-350px  The first concrete gravity based foundation (GBF) on its way to the North Sea.

Five wind turbines
Over the past 12 months BAM Nutall has been constructing the five 60 meters high concrete structures. Each GBF is made up of more than 1,800 m3 of concrete and weighs over 15,000 tonnes when fully installed on the seabed of the wind park.

EDF Energy Renewables is building the Blyth Offshore Demonstrator wind farm that will see five MHI Vestas V164 wind turbines with a total generating capacity of 41.5 MW installed, some 6,5 km off the coast of Blyth, near Newcastle, UK.

Once the GBFs are put into position over the summer, specialist contractor VBMS will start laying the inter array cables that will connect the individual wind turbines.

dws-bam-blyth-gravity-base-dock-350pxDry dock Neptune along the Tyne river where all five GBFs are being build by BAM.

Unique design
EDF ER Chief Executive Matthieu Hue said: ‘This ground-breaking scheme will benefit the North East of England and help the UK to meet its future low carbon electricity needs.’

‘The GBFs are held in place by gravity and this unique design reduces the need to use expensive marine equipment for the installation on the sea bed’, Hue added.

Engineering excellence
Divisional Director at BAM Nuttall Scotland and the North of England, Gareth Farrier said: ‘Bam Nuttall and the wider BAM group are delighted to be supporting EDF Energy Renewables on this demonstrator project, through both the opportunity to deliver innovation and engineering excellence in overcoming the many design and construction challenges.’

This news item was originally published on the website of EDF Energy Renewables.

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Hatenboer-Water delivers water supply system for transformer platform North Sea windfarm, 2 June 2017
Fugro to perform seabed surveys at 660MW wind farm off Cumbria coast, UK, 15 March 2016
Country: United Kingdom

More information
BAM Nutall
Chamberley, UK
+44 1276 63 484

3D offshore animation demonstrating the installation procedure for concrete gravity foundations.