MARSHALING
“In the short term, fabrication of monopiles, transition pieces and turbines will continue to take place around the North Sea in Europe. However, increased demand will result in more diversity. Firstly, we will see additional fabrication taking place elsewhere in Europe. Later, facilities will be opened in North America. As the floating wind market matures, more fabrication will take place in Southeast Asia, as we have seen in other sectors. Success will ultimately depend on managing this complex supply chain, with projects touching most continents in some way. Mammoet’s experience, gained from the world’s largest modularized construction projects, will allow the offshore wind industry to simply re-deploy expertise that already exists and create value by developing new methods for handling, assembling and possibly launching components in the future”. Antoine Lefevre, Sales Manager for Offshore Wind, Mammoet
Some of our marshaling services typically include, but are not limited to: • Efficient delivery of compo- nents through port customs • Interaction with shipping agents • Storage management of marshaling facilities • Inspections, damage assess- ments and documentation • Providing lashing and sea fastening • Load-in and load-out of com- ponents from and to vessels
T he size of offshore wind components continues to grow: monopiles of 2,500t are now commonplace – even nacelles can now weigh over 1,000t. These are specialist pieces of equipment that require specific infrastructure to handle. However, competition from more lucrative oil and gas projects means the offshore wind industry may need to consider less well-equipped locations that do not have the required ground strength, storage space or draft. This is a technical challenge and also puts pressure on schedules, as working envelopes tighten. Even at ports used to serving offshore wind, with compo- nents this large the pressure to use space efficiently is always on. Vessels must be kept con- stantly working to maximize
HANDLING OF TRANSITION PIECES
cost-effectiveness; documenta- tion must be prepared prompt- ly; components must arrive precisely on time at congested sites. We act as a single point of contact from factory or stor- age to the installation vessel, re-ducing the number of inter- faces experienced during each project, which in turn lowers the risk of delays. From interaction with shipping agents, through stevedore management, to lashing and sea fastening, we run a well- oiled machine. Where infrastructure can be developed, we take a long-term approach, helping to create a lasting legacy to serve cur- rent and future wind projects. Where it can’t, our engineers can temporarily strengthen the quay to support offshore wind marshaling using tech- nologies such as Enviro-Mat.
Mammoet is experienced in the efficient movement and storage of transition pieces from the fabrication stage onwards – including movements in vertical and horizontal positions, the design of bespoke equipment and manag- ing sea and river transport. We have experience throughout the fabrication process, including offloading unprocessed tube sections and transporting transition pieces horizontally as they are produced. Once complete, our bespoke tailing frame allows these structures to be lifted into vertical orientation and stored over a much smaller physical area. This allows more ports to be used for offshore work and cuts down on handling time required for each piece. This tailing frame can then be used to trans- port transition pieces out of storage again, meaning there is no need for auxiliary steel. Transition pieces can then be delivered directly under the hook of the installation vessel for easy load-out. Should load-out be taking place elsewhere, we can charter, sea fasten and deliver the pieces to any world location.
HANDLING OF NACELLES, TOWERS AND BLADES Seeking stronger and more reliable winds, turbines and piles are increasing in size – and in doing so creating greater demands on logistics skills and equipment. The advent of +10MW turbines such as Haliade-X has set a new bar for the scale of nacelle, tower and blade components and Mammoet collabo- rates closely with designers and OEMs to ensure that what is built can be transported in the best way. This has led to significant investment in our equipment to ensure efficiency, reduce risks and optimize execution at the terminal. With the market’s largest equipment fleet, Mammoet can mobilize a wide range of hydraulic saddles, blade clamps and transport frames to any worldwide location, allowing components to be stored compactly as manufactured, or closer to ground level. This quickens on-site transporta- tions and ties up less space.
HANDLING OF MONOPILES We understand the unique requirements involved in moving modern, large-scale monopiles and smaller diameter pin-piles – from barging, onsite transportation and storage to sea fastening, grillage support and load-out. Our adjustable hydraulic saddles and new SPMT/ jacking cradle solution allow monopiles to be stored lower to the ground, reducing the cost of supporting steel or create sand bunds. Our pin pile handlers allow these components to be stored at ground level, avoiding the risks involved with using reach stackers. We provide adaptable sea fastening grillage, and are working on solutions to allow more piles to be transported safely for long-distance transport, enhancing the cost-effectiveness of offshore wind component transport to the US and Canada. Finally, our modular sheerlegs provide an alternative where ground bearing pressures are limited or SPMT load-in or load-out is not possible.
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