JV Mammoet-Giant Lays Foundations for Taiwan’s Offshore Wind Farm

Source: www.gulfoilandgas.com 1/10/2022, Location: Asia

The Mammoet-Giant Taiwan joint venture has supported construction of the Greater Changhua 1 and 2a Offshore Wind Farms. The farms are located approximately 35km and 60km off the coast of Taiwan’s Changhua County and are being constructed as part of Taiwan’s transition towards renewable energy use.

Mammoet-Giant Taiwan joint venture has supported construction of these wind farms by providing a range of high-level engineering and design services, as well as assisting with the transport and integration of the jackets, ready for load-out.

The team of engineers have developed temporary lifting lugs for both the upper and lower sections of the jacket foundations, as well as custom support saddles which were used on the self-propelled modular transporters (SPMTs) to transport both upper and lower pieces between assembly stations. This method ensured a more efficient transportation process compared to other methods by reducing the time needed. As part of the project, Mammoet’s PTC210-DS ring crane was deployed for the first time to Taiwan.

The upper jackets – weighing 270t - were transported in turn around 100m fr om the storage area to the PTC crane, wh ere they were erected so that the transition pieces could be fitted. A 750t crawler crane was used for the upending operation.

The lower jackets – weighing between 600t and 700t - were then also transported to the ring crane’s location and erected in a similar fashion. Then the upper jackets, now fitted with transition pieces, were lifted by the PTC and mounted on the lower jackets.

The lifting capacity of the PTC210-DS ring crane allowed up to four jackets to be assembled at once, fast tracking the assembly work. Finally, the completed jacket structures were lowered onto the SPMT/saddle combinations for transport to a storage area at the facility.

Transports of the jackets were conducted using the 96 axle-lines of SPMT in two 4-file 24 configuration, with two transport beams. The beams - measuring up to 24m in length - were designed to bear the pile stoppers, allowing the transporters to lift the full jackets using the SPMTs’ integral hydraulic suspension.

“Mammoet-Giant has provided strong support during the fabrication of the first Taiwan-made jacket foundations for the Greater Changhua 1 and 2a Offshore Wind Farms. The PTC 210-DS ring crane’s high lifting capacity, together with the engineering expertise and solutions shown by the Mammoet-Giant team have provided both time and cost efficiency for the operations,” said Mammoet.

The Greater Changhua 1 and 2a Offshore Wind Farms will have an installed capacity of 900 MW once complete, enough to provide clean energy to one million households in Taiwan.


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