Heerema's DP3 Vessel Aegir Installs First Offshore Wind Turbine
This morning, Sunday September 30, Heerema’s Aegir successfully installed the DOT wind turbine on its previously installed monopile connected by a Slip Joint.
Heerema Marine Contractors, project stakeholder of the SJOR-consortium, decided to step into this project to present herself to the industry as an installation contractor who is also focusing on the transportation and installation of wind turbine foundations & turbines.
The DOT wind turbine is located in the Eneco Princess Amalia Wind Park off the coast of IJmuiden, the Netherlands. The complete wind turbine was picked up in a single lift by Heerema’s lifting vessel Aegir from the quay of Sif Rotterdam and transported towards its designated location. The fully assembled turbine was installed by Aegir as a floating vessel and kept in position by Dynamic Positioning (DP). The installation of the wind turbine took less than 1 hour in total, which is noticeably faster than usual installation.
The Slip Joint is an alternative connection between an offshore wind turbine and its foundation. The connection is based on friction, where the weight ensures a firm and stable connection. Installation is done by simply sliding the wind turbine over the monopile without the use of grout or bolts. This simple mechanism allows for cost reduction in material, equipment and personnel as well as allowing for a shorter installation time. It is the first time a slip-joint connection is deployed offshore.
About SJOR Consortium:
The Slip Joint Offshore Research project (SJOR) was initiated by DOT BV late 2016 and is a collaboration between the research partners; TU Delft, TNO, Van Oord and Sif group and project stakeholders; Eneco and Heerema Marine contractors. This consortium aims to further reduce the costs of Offshore Wind and to strengthen the Dutch offshore Wind energy sector.
Heerema Marine Contractors (HMC) has developed a globally unique, innovative way of lifting that will redefine the boundaries of lifting operations offshore. This ‘QUAD lifting’ was tested successfully on October 22, 2018 in the Gulf of Mexico. The QUAD lifting enables HMC to integrally install and/or remove oversized topsides or jackets. This revolutionary innovation is an important expansion of HMC's services and guarantees unmatched lower overall project costs.
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Heerema Marine Contractors is incredibly proud to announce that our Installation Engineer Marius Ottolini has been elected winner of the 2018 “Offshore Energy Young Engineer Award.” Marius received his award for being one of the big drivers within Heerema in the development of silent foundations, with the aim to reduce or eliminate piling noise. Such noise can affect the marine environment to a substantial degree. He has developed several alternatives which are a step change in foundation design, in particular because the foundation can be installed silently and it can be completely removed after it has reached its end of life.
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We are pleased to announce that Heerema Marine Contractors (HMC) and AF Offshore Decom (AFOD), together known as the HAF consortium, have been awarded a contract from Marathon Decommissioning Services LLC for the Engineering, Preparation, Removal and Disposal (EPRD) services of the Brae Bravo Platform.
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