Offshore blade lifting yoke for B75 Blades

In 2014, Siemens Wind Power introduced their new 6MW wind turbine platform. The new turbine was special in many ways, but a distinctive feature was the blade, which with a length of 75 meters, was one of the largest blades ever to be installed offshore. For this purpose, Eltronic Heavy Industries developed a unique solution which worked so well that Siemens Wind Power decided to place an order of not just 1 but 5 lifting yokes.

                     

 

Henrik Hauge Jensen, Head of Material Management at Siemens Wind Power explains: “Our new 6MW turbine is being installed further from shore than other offshore turbines, and as all operations performed offshore are extremely cost-intensive, we needed to find a supplier who would be able to develop a lifting yoke to be used for single blade installation in even more demanding environments and at higher wind speeds than before. At the same time, we had to make sure that the entire operation could be performed with a maximum level of safety for both operators and components, and last but not least we needed to reduce our installation time”. To find a supplier being able to meet all of these requirements was not entirely simple.

“Focus on safety in all aspects was naturally paramount to us in the selection process, but it was also important for us to find a supplier with a good amount of experience from the industry and preferably also with some knowledge of our company and the way we work. Having supplied other types of lifting yokes and installation equipment to Siemens Wind Power, Eltronic had the experience and commitment to safety and quality that we were looking for”.

Project highlights 

   Reduced installation time 

   Safety in all aspects

   Full automatic sling fixation

   No working at heights

   Installation made possible at higher wind speeds

   Yaw, tilt and pitch functions for blade adjustment

   Intuitive control system

           

 

The solution – Janett lifting yoke

 

The solution presented to Siemens Wind Power was quite unique - a mechanical yet flexible construction with a length of 14 m, a height of 8 m and a weight of 78 tons. Henrik Hauge Jensen describes the yoke in this way: “In the wind turbine industry, Janett is groundbreaking. The fact that we are now able to perform offshore installation under demanding conditions while at the same time ensuring absolute safety for the operators and maintaining complete control of the blade is truly unique.” 

Read more about our blade lifting yokes

The lifting yokes from Eltronic have a flexible construction which provides maximum stability during the installation and dismounting of blades. Lifting yokes eliminate the need for working at heights and manual handling of slings which leads to increased safety and reduced installation time. We offer standard yokes as well as customized solutions.