June 10 - Mammoet has begun preparations for lifting modules onto the P-76 floating production, storage and offloading (FPSO) hull in Brazil.

HLPFI reported in March that Mammoet Brazil had signed a contract with the consortium Techint-Technip (CTTP76) for the lifting of 20 modules onto the hull of the Petrobas P-76 FPSO vessel.

All modules are currently located at the Unidade Offshore Techint (UOT) integration yard awaiting the arrival of the FPSO hull, which is presently at the Enseada Inhauma shipyard in Rio de Janeiro.

Six weeks after the contract was signed, Mammoet mobilised one of its 5,000-tonne capacity PTC 200-DS cranes from the USA, for use in the integration of the oversize modules, which weigh up to 2,000 tonnes each.

Mammoet explained that the PTC 200-DS ring crane was identified as the best option for the P-76 project, because it combines high lifting capacity with a long reach, small footprint, manoeuvrability and quick mobilisation.

The assembly of the huge crane has already begun, and Mammoet expects the P-76 module integration to take place during the second half of this year at the UOT yard in Pontal do Paraná.

Meanwhile in Sweden, Mammoet Wind has installed nine Siemens wind turbines at the Juktan wind farm in Blaiksjön.

Mammoet Wind was contracted by project owner Vattenfall to undertake the shipping, onshore transportation, crane operations, mechanical and electrical installation of the turbines.

Manufactured in four different facilities across Denmark, the turbine components were transported to the Port of Aarhus, where all units were loaded and shipped to the Swedish Port of Skelleftehamn. From there, the components were delivered by road to the Juktan site using conventional trailers.

Since the wind farm site is located in a forest area, Mammoet explained that there was limited space for manoeuvring - especially with three of the nine turbines.

For six of the turbines, there was enough space to execute a 'full-rotor' installation, which involved lifting and installing the fully-assembled rotor star in one move. Vattenfall also asked Mammoet to undertake the same method for the three larger turbines, which was only possible after a comprehensive lifting plan had been prepared.

By lifting each of the rotor stars in one move, Mammoet claims that it managed to save almost two days of installation time per turbine.