The work will be carried out by the Semi-Submersible Crane Vessels ‘Hermod’ (maximum capacity of tandem lift: 8,100t) and ‘Thialf’ (maximum capacity of tandem lift: 14,200t). HMC will remove and recycle the platforms in a phased sequence, whereby optimum use is made of both the unique as well as proven capabilities of its vessels.
In November last year, HMC upgraded the Thialf with pipe layer, recovery winch and four six-cylinder engines to improve the vessel’s dynamic positioning capacity. Normally the Thialf has an average crew of 275. During the upgrade project, which was executed during normal work, the Thialf housed up to 500 people of 13 different nationalities.
HMC will be the main contractor for this work which will also involve Norwegian demolition and recycling company AF Decom Offshore (a business unit of AF Gruppen ASA). The Ekofisk topsides and jackets will be removed and taken to a yard in Vats, Norway, for recycling and disposal. An estimated 96-98% of the material recovered will be recycled by 2014. The award includes several options for removal of further platforms and other installations.
Commenting on the award, HMC’s Executive Vice President Commercial Steve Preston says: “This award strengthens the excellent relationship between our companies. We are looking forward to a continuation of the successful execution of Ekofisk CAT 1. For Heerema Marine Contractors and our key suppliers, it is a further step in demonstrating our ability to deliver the complete service required for such a decommissioning project.”
Offshore removal is expected to be completed by the end of 2013.
