Offshore Wind Turbine Grout Repair Solutions

By February 6, 2017 No Comments

Insight into: Renewables: Offshore Wind

Offshore Wind Turbine Grout Repair Solutions

One of the most important technical challenges being faced by many European offshore wind farm developers first came to light in April 2010, when a design fault in grouting used to secure wind turbines to their monopiles or towers was discovered.

Due to this design fault, the grout injected during the installation of the offshore wind farms started breaking up, which caused the turbines to move on their monopile foundations.

A solution was engineered to remedy the failing structures allowing ENGIE Fabricom to successfully execute 54 Phase 1 wind turbine repairs within a single campaign. This included installation of new jacking frames, bearings, welding, NDT, painting, J-tube inspection and installation of ventilation systems and supply of all constructed components.

The offshore wind installation works completed within the grout repair project involved:

■ Full onshore and offshore setup and demobilisation
■ Confined space working of various trades
■ Development of RAMS/weld procedures/safety procedures
■ Full equipment set up and demobilisation
■ Inspection of J-Tubes and re-jacking if required
■ Installation of H-frame/jacking plates
■ Full offshore welding including NDT
■ Multi-technical installation works
■ Setup and jacking of bearings
■ Painting both within confined space and above air-tight deck to NORSOK standards
■ Punch out and hand over to the client with full documentation

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