Altitec carries out specialist healthcheck at Greater Gabbard

Thursday, 14 December, 2017 - 12:00

Altitec, the global blade inspection and maintenance specialist, has completed lightning damage inspection and repairs at the 504 MW Greater Gabbard Offshore Wind Farm, as part of its maintenance work at the site.

The work this summer followed end of warranty (EOW) inspections carried out last year, and featured two teams operating on-site over a period of six weeks.

Wind turbines are susceptible to lightning damage due to their height and high conductivity, and lightning strikes can contribute to a loss of productivity and periods of downtime. On average, Altitec estimates that it carries out lightning repairs on up to 4% of the turbine blades it inspects each year.

Kenny Beardsell, Site Manager at Greater Gabbard, said: “Regular inspections of turbine blades are not just a necessity, they really add value. Offshore turbines and turbine blades are exposed to a number of environmental and extreme weather hazards, and Altitec’s services ensure that our turbines will continue to perform at their very best well into the future.”

Under the terms of its contract, Altitec has provided specialist inspections and maintenance at Greater Gabbard, which help safeguard the future operational and financial success of the wind farm. The affected turbines remained operational right up until repairs were carried out, at which point they were taken offline until the repairs were completed.

During this downtime, Altitec’s technicians inspected and treated blades for damage resulting from general wear and tear and, in some cases, lightning damage. In total, Altitec inspected 140 turbines at the site, as well as blades with lightning damage.

“Greater Gabbard is one of the UK’s flagship offshore wind farms, and these inspections are an essential means of optimising its performance going forwards,” said Tom Dyffort, Managing Direct, Altitec Group.

“Lightning damage is a common environmental hazard for rotor blades, but even within the specialism of blade repair, the skills needed to account for it and carry out repairs are extremely technical and require a high level of training. Our technicians are very experienced in this line of work and were able to work quickly to minimise disruption and downtime at the site.”

Source: Altitec

Similar Entries

Siemens Gamesa Renewable Energy is announcing the renewal of its contract to service the Greater Gabbard wind farm, located off the east coast of the UK. The five-year contract is for the provision of operation and maintenance for the 504-MW wind farm, until 2022.

International marine and engineering consultancy LOC Renewables is carrying out marine warranty surveying (MWS) services on what will be the world’s biggest wind farm, DONG Energy’s Hornsea Project One. The site, which will consist of 174 turbines installed off the Yorkshire coast in the North Sea and deliver power to more than one million homes, is scheduled for commissioning in 2020.

ECN, KNMI and Whiffle are working on a new atlas featuring accurate information about North Sea winds for use in wind energy applications. Clarity with regard to the average amount of wind and how often wind speeds reach extreme levels will enable a more accurate estimate of how much wind energy you can generate and how robust wind turbines need to be made to prevent damage or failure. Greater certainty about the potential performance of your wind farm also makes it possible to secure cheaper loans from investors. This reduces the cost of offshore wind energy, a key target set by the Dutch government.

In 2017, Mammoet, heavy lifting and transport specialist, has been contracted by Lamprell Energy for the heavy lifting and transport of 60 jacket foundations for the East Anglia One offshore wind farm project.