The employment of the GRT has turned out to be an important milestone for the logistics function of Siemens Gamesa. Having been striving to create efficient solutions for long-term storage, Siemens Gamesa has included a GRT in their portfolio with the potential to ensure cost reduction and help ensure max lifespan of their turbines.

 

The nacelles are subject to long-term storage and therefore require maintenance to prevent bearing degradation during standstill. If not regularly rotated, the main bearings may suffer corrosion and quality damage, for which reason keeping components well-lubricated at all times is important.

The battery-powered and radio-controlled mobile unit supplied by MacArtney is remotely driven under the nacelle with hub and mounted generator, while the nacelle is stored on its transport frame. After correct positioning of the GRT under the generator, the fully automated process is initiated.

Equipped with embedded software and an intelligent battery package, the GRT is able to operate efficiently and silently 10 hours a day. The GRT is thus part of the equipment securing long-term storage of SWT-6.0/7.0/8.0 nacelles with generator and hub.

Sustainability and cost-effectiveness

The sustainable and cost-effective solution provided by MacArtney contributes to lowering the total cost of energy. In general, the procedure of rotating the main bearing protects the bearing from potential corrosion during long-term storage and guarantees that the product sustains its high quality level. Besides, the GRT improves storage conditions and fulfills a need for reducing non-conformance costs in the long run by securing the bearings before installation far better than previous, long-term storage efforts.

Long-term quality of stored nacelles

The GRT represents a fast, easy, and reliable method for ensuring the long-term quality of stored nacelles. Performing at least five complete 360° revolutions every 14 weeks, the GRT provides for a practice of keeping the main bearing well-lubricated as the GRT makes sure that the grease in the bearing is properly distributed.

Choosing the right supplier is crucial to the long-term success of offshore renewable energy projects. The MacArtney Underwater Technology Group has been actively working with offshore renewable energy projects for several years, supplying state-of-the-art solutions to wave, tidal and offshore wind applications and projects around the world.

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