26th July 2022 in Construction, Press releases, Project news
- Significant step forward in developing more secure and affordable homegrown UK energy.
- Campaign begins to install 277 turbine foundation monopiles and transition pieces across three phases of Dogger Bank Wind Farm, off the Yorkshire coast.
- Offshore turbine foundations designed by UK-based designers from Wood Thilsted.
- Design includes world’s first split-level transition piece design for safe installation and operation.
- Foundations are more than 72m in length, weigh on average 1057 tonnes and include world’s largest 8m offshore wind flange.
- Turbine foundations manufactured and fabricated by Sif and Smulders.
26 July, 2022: Work has started on the installation of 277 of some of the world’s largest offshore wind turbine foundations in the North Sea, in what is another major milestone for Dogger Bank Wind Farm, which is being developed 80 miles off the Yorkshire coast.
The world-class renewable energy project, is a joint venture between SSE Renewables (40%), Equinor (40%) and Eni Plenitude (20%). SSE Renewables is lead operator for the development and construction of Dogger Bank Wind Farm, while Equinor will be lead operator of the wind farm on completion for its expected operational life of around 35 years.
The campaign to install turbine foundations at what will be the world’s largest offshore wind farm has commenced in recent days, with the installation of the first monopile and transition piece on Dogger Bank A. The installation campaign is being led by Seaway 7 supported by DEME.
The turbine foundations for Dogger Bank Wind Farm are UK-designed and feature a unique split-level transition piece, as well as a world’s-largest 8-meter flange – or projecting flat rim – to support the turbine towers.
Installation of GE Renewable Energy’s ground-breaking Haliade-X turbines onto each of the installed turbine foundations will commence from Spring 2023.
Steel manufactured by Tata Steel in Wales and processed in Corby and Hartlepool is being used in the supporting components of the transition pieces, while South Tyneside-based Metec and Rochdale-based Granada Material Handling have also won contracts with Smulders to support this innovative and world-leading project.
Dogger Bank Wind Farm Project Director, Steve Wilson, said:
“These foundations have been designed for what is arguably the most demanding wave environment to be encountered on an offshore wind farm and are a testament to the many companies involved in collaborating to reach this unprecedented milestone.
“As well as the sheer scale of the foundations, we’ve incorporated a unique split-level transition piece which allows safe access for technicians directly into the turbine tower from our service and operations vessels, eliminating thousands of manual handling activities and lifting operations over the lifetime of the assets.
“Successful installation of our first monopiles and transitions pieces is a giant leap for offshore wind globally and will lay the foundations for Dogger Bank Wind Farm to contribute to meeting the UK’s net zero target, enabling the development of a future energy system that is cleaner, cheaper and more secure. It also demonstrates the continued innovation in our sector as we begin to install the increasingly larger and more powerful turbines that are needed to fuel our homes and businesses safely and securely in a net zero world.”
Designed in the UK by experts from Wood Thilsted, the foundations have been optimised to tackle challenging wave loads in the Dogger Bank area of the North Sea, with installation in water depths of up to 32m and at a distance of 130km from shore, and provide a solid and stable base for the scale of the GE Renewable Energy’s groundbreaking Haliade-X turbines.
Alastair Muir Wood, CEO of Wood Thilsted, said:
“Wood Thilsted is proud to be a part of making Dogger Bank Wind Farm a success. Our team faced challenges including working with the largest turbine at the time, an innovative dynamic positioning installation vessel, and some very significant wave loads.
“What made success possible was the collaborative working relationship shared with the Dogger Bank team and the other key stakeholders. This project is a model of success for current and future projects.”
Over the three-year installation programme for the three phases of Dogger Bank Wind Farm, a total of 277 monopiles and transition pieces will be loaded onto installation vessels in Rotterdam ahead of transfer out to the offshore wind farm site deep into the North Sea. Using dynamic positioning technology the vessels will pinpoint the installation site in the seabed at which point a monopile measuring up to 72m (equivalent to more than 6 double-decker buses end-to-end), will be upended and transferred to a pile gripper, before being lowered into the seabed.
A hammer will be used to drive the monopile to the design depth in the seabed before a guidance system aligns the installation of the record-breaking 8-metre flanges which act as a connection for the transition piece which is then installed onto the monopile. The foundations require 152 giant M80 bolts to secure them before a cover is inserted onto the top of the transition piece to leave it watertight.
Seaway 7 was awarded the tier one contract for foundation installation on all three phases of Dogger Bank Wind Farm, with sub-contractor DEME deploying its Innovation vessel for installation of the first foundations on Dogger Bank A. Following the DEME Innovation, the Seaway Strashnov will deploy on Dogger Bank A to continue the foundation installation.
Wouter van Dalen, Project Director, Seaway 7, said:
“The successful installation of the first Dogger Bank foundation marks the start of a multi-year installation campaign for Seaway 7. In good cooperation with our client Dogger Bank Wind Farm and our partners and suppliers, this complex project has been prepared for installation with a number of different heavy lift vessels, starting with DEME’s Innovation. Seaway 7 is proud to be part of the team that is constructing the Dogger Bank project and is looking forward to safely installing the remaining 276 foundations.”
Lucien Romagnoli, Business Unit Director Renewables at DEME Offshore, said:
“We are extremely proud to be supporting the construction of the world’s largest offshore wind farm with foundation installation and later in the programme as inter-array cable installer. These unique foundations are huge but also, they are technically complex. This is an important moment for the offshore wind industry and the energy transition. It is wonderful to be working alongside like-minded partners with the joint goal of achieving a net-zero energy system.”
In November 2020, the consortium Sif and Smulders was awarded the contract for the manufacture of all 190 monopiles and transition pieces for the Dogger Bank A and B phases of the wind farm, with a contract for Dogger Bank C’s remaining 87 monopiles and transition pieces awarded to the consortium in 2021.
ENDS
Picture caption: Work has started on the installation of 277 of the world’s largest offshore wind turbine foundations in the North Sea, in what is another major milestone for Dogger Bank Wind Farm (image credit: DEME Group).
For further information:
Media contact – Dogger Bank Wind Farm:
Richard Holligan, SSE Renewables
Richard.Holligan@sse.com
+44 (0) 1738 342530
Media contact – Dogger Bank Wind Farm:
Rachel Lawrence, SSE Renewables
rachel.lawrence@sse.com
+44 (0) 7385 368783
10th May 2022 in Construction, Press releases, Project news, Supply Chain
The first of a number of transformers that will enable the transmission of renewable energy from the world’s largest offshore wind farm has been delivered.
The transformers will play an integral role in the operation of three onshore convertor stations in East Riding of Yorkshire and on Teesside, that will eventually convert the current from the wind farm for transmission via the national grid network to 6 million UK homes.
This week the first transformer was successfully transported from Port of Hull to the first convertor station off the A1079 near Beverley in East Riding, where construction of a second convertor station is also underway by tier one supplier Hitachi Energy. Three further deliveries are scheduled in East Riding on the mornings of 15, 22 and 29 May, with deliveries for the second East Riding convertor station taking place in 2023.
Heavy lift and transportation specialist Allelys, was appointed by Hitachi Energy to carry out and oversee these latest deliveries.
Dogger Bank Wind Farm Transmission Package Manager Børge Angelfloss, said:
“Successful delivery of the first transformer is an important milestone for our world-leading project.
“Our thanks go to all those involved in ensuring this happened safely, including the local highways authority and representatives from Humberside Police for their valuable expertise on the route between Port of Hull and our convertor station site.”
Hitachi Energy is due to start work on the third convertor station on Teesside later this year. The company is responsible for providing its high-voltage direct current (HVDC) Light® systems for all three phases of the wind farm, including the projects three high-tech onshore convertor stations.
Göran Isacsson, Project Director for Hitachi Energy, said:
“Hitachi Energy is proud to be connecting the Dogger Bank Wind Farm to the energy grid using HVDC (high voltage direct current) technology.
“The delivery and installation of the transformers at the onshore converter stations we are building are important milestones for the project. We are pleased to have successfully achieved this first shipment and we thank the local authorities and community for their support and patience.”
Dogger Bank Wind Farm is being built in three phases known as A, B and C. The project is a joint venture between SSE Renewables (40%), Equinor (40%) and Eni Plenitude (20%).
It will be the first HVDC connected wind farm in the UK, paving the way for other UK wind farms and suppliers to build on our experience transmitting renewable energy safely and efficiently across long distances while minimising potential losses.
Last month the Dogger Bank Wind Farm team officially marked the start of its offshore construction work with the installation of the first length of HVDC export cable off the Yorkshire coast.
Tier one supplier NKT is leading the work to install the Dogger Bank A nearshore cable, that will connect the first phase of the windfarm more than 130km off the coast to a landfall point at Ulrome, in East Riding of Yorkshire.
ENDS
Picture caption: The first transformer has been delivered to the convertor station site for the first phase of Dogger Bank Wind Farm. Image source: Dogger Bank Wind Farm
9th May 2022 in Construction, Project news, Supply Chain
The first transition pieces for the first phase of Dogger Bank Wind Farm have been successfully loaded out at Smulders’ yard in Hoboken, Belgium. The transition pieces are being shipped to Sif’s Maasvlakte 2 terminal in Rotterdam ahead of their installation in the North Sea starting later this year.
In total, 95 transition pieces will be installed on Dogger Bank A, with a further 182 required for phases B and C of the world’s largest offshore wind farm.
Dogger Bank Wind Farm Marine Package Manager, Alan Evans, said:
“With a diameter of 8m and weighing in at 550 tonnes, the Dogger Bank A transition pieces are the heaviest and have the largest diameter of any to be manufactured at Smulders’ Hoboken facility.
“Successful load out of the first four of these impressive structures is an important milestone for everyone involved, and a testament to the strong partnership we share with our designers and manufacturers.”
In November 2020, the consortium Sif and Smulders was awarded the contract for the manufacture of all 190 monopiles and transition pieces for the first phases of the wind farm in November 2020, with a contract for Dogger Bank C awarded in 2021.
The monopile foundations and transition pieces for the project were designed in the UK by Wood Thilsted. Steel manufactured by Tata Steel in Wales and processed in Corby and Hartlepool is to be used in the supporting components of the transition pieces, while South Tyneside-based Metec and Rochdale-based Granada Material Handling have also won contracts with Smulders to support this innovative and world-leading project.
Caption: The first transition pieces for the first phase of Dogger Bank Wind Farm have been successfully loaded out at Smulders’ yard in Hoboken, Belgium. Image source: Smulders
28th April 2022 in Construction, Press releases, Project news, Supply Chain
Dogger Bank Wind Farm’s tier one contractor Hitachi Energy will begin to transport electricity transformers from Hull to the project’s East Riding convertor station site near Cottingham from May 8.
The transformers will travel from Albert Dock, Hull via A63, A1034 and the A1079. The size of the transformers requires the use of abnormal load vehicles. There will be four deliveries during the month of May, expected to be made on the mornings of 8, 15, 22 and 29 May, with each delivery taking up to six hours, dependent on the conditions.
Rachel Lawrence, Community Engagement Manager for Dogger Bank Wind Farm, said:
“While we will do everything, we can to minimise disruption during these deliveries, it is it is possible some journey times may be slightly longer than normal and we would ask the public for their patience as we carry out this critical work.
“Our contractors will be working with officers from Humberside Police to ensure the transportation is carried out safely and securely, and with minimal impact on the communities close to these roads. Delivery of these transformers is an important milestone for the construction of our infrastructure in East Riding, which will be home to two of our three convertor stations for the world’s largest offshore wind farm.
“We are extremely grateful for the ongoing patience and understanding of the communities in this area as we build the infrastructure that will help the UK to reduce carbon emissions and create a secure electricity supply for 6 million UK homes.”
The transformers will be delivered on specialist girder frame trailers provided by UK firm Allelys. The trucks will be more than 58.2 metres long and 4.75 metres wide and will travel at approximately 10 -15 miles per hour. To support the delivery the team has worked with contractors and local highway officials from East Riding of Yorkshire Council to carefully plan the route and minimise disruption to road users. The specialist girder frame trailer will have a police escort to help manage traffic and make the process as smooth and safe as possible.
Overview of the route:
The delivery convoy consisting of the abnormal load vehicle, police and support vehicles will leave the Albert Dock in Hull and make its way westbound, along the A63 to join the A1034 at South Cave heading north. The convoy will then join the A1079 at Market Weighton, heading east until the outskirts of Beverley, where the vehicle will turn south remaining on the A1079 and is expected to arrive at the convertor station site entrance, located between Beverley and Cottingham in the afternoon on the specified dates.
The transformers will play an integral role in the operation of two onshore convertor stations in East Riding of Yorkshire that are currently under construction at the A1079 site between Beverley and Cottingham. Eventually they will convert the current from the wind farm for transmission via the national grid network to millions of UK homes after the renewable energy has made its way under the ground from the landfall point at Ulrome, between Bridlington and Hornsea.
Details of further transformer deliveries in 2023 will be communicated nearer the time.
ENDS
Picture caption: Allelys will deliver transformers to the Dogger Bank Wind Farm convertor station site from 8 May. Picture source: Allelys.
31st January 2022 in Construction, Press releases, Project news, Supply Chain
The jack-up vessel that will enter service for the first time to install the turbines on Dogger Bank Wind Farm has been officially launched.
Jan De Nul’s Voltaire will play a critical role in the installation of 277 GE Haliade-X turbines in the North Sea, more than 130km off the Yorkshire coast of England.
With a lifting capacity of more than 3,000 tonnes and a deck space equal to a football pitch, the ship is the largest of its kind in the world.
The next generation vessel was launched at the COSCO Shipping Shipyard in Nantong, China.
Steve Wilson, Dogger Bank Project Director, said:
“We congratulate Jan De Nul on successfully launching its unrivalled Jack up Vessel, the Voltaire. This impressive installation vessel will play a critical role in the construction of all three phases of Dogger Bank Wind Farm when it enters service, demonstrating an innovative engineering solution to the growing challenge presented by larger and more technically demanding wind farms.”
Dogger Bank wind farm agreed a contract with Jan De Nul for the transport and installation of turbines for the first two phases of the wind farm in 2019, with the Dogger Bank C contract following on last year.
The Voltaire will be able to run on second-generation biodiesel that reduces its fuel carbon footprint by up to 90%, and is also equipped with an advanced dual exhaust filter system, removing up to 99% of nanoparticles from emissions.
The launch of this environmentally-innovative vessel came just 20 days after Jan De Nul launched its Les Alizés ship to serve the growing demand from current and future wind farm projects.
Philippe Hutse, Director Offshore Division at Jan De Nul Group, said:
“The Voltaire will enable us to work in deeper waters and reach ever higher nacelle heights than before. Adding Voltaire and Les Alizés to the fleet gives us the perfect set of vessels to execute the growing number of large and clustered international offshore wind projects. Our forward-looking view on market trends and the quick decision making to invest in this set of Next Gen installation vessels, have done us no harm. The Voltaire and Les Alizés have all the required specifications to meet the upcoming challenges in offshore renewables. We are proud to be recognised for the choices we made back in 2019, and look forward to continuing our journey, alongside industry leaders, through our contribution to renewable energy growth in the worldwide energy transition.”
