Test tower and foundation for Burbo Bank Extension installed onshore to optimise installation processes offshore

April 21st, 2016

DONG Energy and MHI Vestas Offshore Wind have jointly installed a V164-8.0 MW wind turbine test tower and foundation onshore to test several installation and commissioning procedures, and to act as a critical training tool before the commencement of Burbo Bank Extension offshore installation.

In order to further test installation and commissioning procedures, the interfaces between the tower and transition piece, and enhance our technician training capabilities, MHI Vestas and DONG Energy have jointly invested in installing a reference tower for the V164-8.0 MW on top of a shortened version of the transition piece.

The 97 m high tower was installed opposite the MHI Vestas nacelle factory at the Lindø Industrial Park, on the Danish island of Fuenen and is expected to be in place for up to two years. The tower and foundation are replicas of those that will be installed at Burbo Bank Extension, and the process has already resulted in a significant reduction in the commissioning phase of the tower.

Claus Bøjle Møller, DONG Energy’s Project Director for Burbo Bank Extension, said: “As Burbo Bank Extension will be utilising the biggest wind turbines in the world, it is important that we are as prepared as possible before installation begins. The test tower and transition piece will allow us to avoid potentially costly interface misalignments, and to maximise efficiency and safety procedures during offshore construction of cables, foundations and turbines as well.”

Rasmus Ravn, Project Director at MHI Vestas, said: “Investing in the test tower has further underlined the high value both MHI Vestas and DONG Energy place on testing our processes and interfaces before we begin offshore installation of Burbo Bank Extension.”

The tower will initially be used by MHI Vestas to optimise the pre-assembly process, which will take place in Belfast during the coming months. Later in the year, service technicians will use the tower as a training aid for preparation for service at both the Burbo Bank Extension, and Walney Extension projects. In addition, DONG Energy and its contractors will use the test facility to prepare for foundation and cable installation.

About the reference tower
• Replica of the towers for Burbo Bank Extension
• 97m high, 6.5m base diameter, weight of the tower 400 tonnes, weight of the transition piece 222 tonnes
• Installed using Self Propelled Mobile Transport (SPMT) and innovative tailing frame, minimising crane use at pre-assembly
• Enables DONG Energy and MHI Vestas to test interfaces between the tower and the transition piece to optimise the process ahead of offshore installation
• Provides an ideal training tool for service technicians

About the Burbo Bank Extension project
The 258 MW Burbo Bank Extension project lies off the coast of Liverpool Bay, in the UK. When installed the 32 wind turbines will produce enough energy to meet the electricity requirements for approximately 180,000 houses, approximately 30 percent of the greater Liverpool area.

The contract with MHI Vestas includes supply, installation and commissioning of the wind turbines as well as a five year full scope service contract. Installation begins in autumn 2016, and commissioning is expected to be completed in 2017. Pre-assembly of the turbines will take place in Belfast, Northern Ireland.

For more information, please contact:
Matt Whitby, Press Officer
MHI Vestas Offshore Wind
Tel: +45 2250 7131
Mail: matke@mhivestasoffshore.com

Brad Watson, Press Officer
DONG Energy
Tel: +44 (0)20 7811 5419
Mail: brawa@dongenergy.co.uk

About MHI Vestas Offshore Wind
MHI Vestas Offshore Wind is a joint venture between Vestas Wind Systems A/S 50% and Mitsubishi Heavy Industries (MHI) 50%. The company’s sole focus is to design, manufacture, install and service wind turbines for the offshore wind industry. The company aims to drive down the cost of energy from offshore wind parks by driving capital and operating savings, and increasing output of wind turbines by bringing the best technology to the market. The company is founded on collaboration, and creating powerful partnerships with key stakeholders is the cornerstone of its business model.

About DONG Energy
DONG Energy is one of the leading energy groups in Northern Europe, headquartered in Denmark. Around 6,700 ambitious employees, including over 700 in the UK, are engaged in developing, constructing and operating offshore wind farms; generating power and heat from our power stations; providing energy to residential and business customers on a daily basis; and producing oil and gas. Group revenue was DKK 71bn (EUR 9.5bn) in 2015. For further information, see http://www.dongenergy.co.uk/or follow us @DONGEnergyUK on Twitter

About the V164-8.0 MW
• 8 MW rated power, with an optimal rotor to generator ratio
• 80 m blades, the equivalent of nine double decker London buses
• Each blade weighs 35 tonnes
• Swept area of 21,124 m2 – larger than the London Eye
• The nacelle is 20 m long, 8 m wide and 8 m high, weighing approximately 390 tonnes
• Approximate hub height of 105 m
• Approximate tip height of 187 m
• Reduces operational and maintenance costs by enabling customers to run fewer, larger turbines
• World record production by a single wind turbine of 192 MWh during 24-hour period (October 2014)