In the south of Navarre, very close to the historic city of Tudela, the use of wind to generate power has a long tradition. The new wind farm Ablitas Cabanillas II is the latest project developed in this area.
27 state-of-the-art wind turbines with the latest technology have been installed. 120-metre-high turbines with 70-metre-long blades.
Our experience in manoeuvres in wind farms and our owning the appropriate means allowed us to participate in this important project. For the main operations we used a Liebherr LG 1750.
We were in charge of assembling the five sections of the tower as well as the nacelle and the rotor. The tubular concrete sections of the tower weighed between 100 and 200 tonnes and the nacelle 170 tonnes. All together it reached 120 metres in height.
Seven other cranes from our pool were used to provide support in the assembly and disassembly of the main crane as well as to carry out some other prior works.
Client: Transbiaga (Transportes Usabiaga). Naturgy
Place: La Mudarra Wind Farm, about 2.5 km away from Valladolid.
LG1750, one of the first lattice boom cranes using wheels to move around. 41 wind towers of 3.3 MW each were assembled with it.
The towers were assembled using concrete segments with the help of two other cranes, LTM1500 and AC500, as if they were puzzles. Once the tower had been assembled, the nacelle, which weighed 168 tonnes, was raised to a height of 120 m. To this end, the crane used 220 tonnes of counterweight on the structure and other 400 tonnes on the rear tray.
Customer: General Electric
Manoeuvres carried out in 14 wind turbines on the wind farm in May, June and July. Disassembling, holding, laying down and assembling the rotor back, after several maintenance operations.
A 750-tonne Liebherr was used to carry out the main operations: lowering and hoisting the rotor, including the blades, from a height of 100 metres. The total weight of the unit was 56 tonnes.
A smaller crane, a 130-tonne Liebherr, was used to hold the rotor and disassemble the wings once the unit was on the ground.
A technical team of 7 people from the Ibarrondo Group carried out the whole manoeuvre. It also involved other vehicles such as transport equipment and lifting platforms.
Our technical department carried out the whole project and manoeuvre simulation, demonstrating once more our experience and expertise in the provision of services to the wind sector.
This is an operational area to which the Ibarrondo Group is committed with a view to developing its activities in forthcoming years.
The work carried out involved handling the large pieces which form the wind turbines at the docks of the Port of Bilbao when embarking them for their export.
Likewise, we have also collaborated in the assembly of the pieces at their final destination, usually places which are hard to reach, where our fast-intervention telescopic cranes show their versatility and adaptability to the needs of the assemblies.