Wind Energy Sector

Installation of 4.5MW Wind Turbine Components in High-Wind Conditions

Project Overview: Assembly of a new wind farm cluster in Northern Europe. The task involved lifting nacelles and blades at hub heights exceeding 120 meters.

The Challenge:

The project site was located on soft coastal soil with frequent wind gusts. Precision was required to align the nacelle bolts with a tolerance of less than 2mm.

Engineering Solution:

• Equipment: Liebherr LG 1750 lattice boom mobile crane for the main lifts and an LTM 1100-4.2 for tailing the blades.
• Strategy: Utilization of specialized wind speed monitoring sensors integrated with the crane’s LICCON system to identify safe lifting windows.

Technical Specs:

• Max Lift Weight: 95 tons (Nacelle).
• Hub Height: 125 meters.
• Ground Prep: 200 $m^2$ of heavy-duty steel mats to ensure a stable footprint for the LG 1750.

Result: All 12 turbines were commissioned 10 days ahead of schedule with zero safety incidents.