Heerema Claims Jacket Removal Record
Heerema Marine Contractors (HMC) reported on the 21st July that its Sleipnir semi-submersible crane vessel (SSCV) has set a record for the largest single lift jacket removal.
The SSCV successfully removed the 8,100-metric-ton Jotun-B jacket for Vår Energi in the Norwegian sector of the North Sea, HMC noted in a written statement.
The platform had been installed in the Jotun field since 1998, and last year Heerema’s Thialf deep-water construction vessel removed the topsides and conductors, the contractor added.
According to HMC, the jacket removal began on the 11th July, at the Jotun field approximately 200 kilometres west of Stavanger.
The firm pointed out that 2.7-metre-diameter and 80-millimetre wall-thickness skirt piles were cut subsea, noting that aspect of the project was unprecedented.
In addition, the company stated that it fabricated a 40-metre-long spreader bar within a two-millimetre tolerance “for a tight, but perfect fit.”
HMC completed the decommissioning work by offloading the Jotun-B jacket at the AF Miljøbase facility in Vats, Norway on the 16th July.
The firm pointed out the project was concluded one day ahead of schedule, adding that up to 99 percent of the Jotun-B jacket will be recycled.
“We set records to break them, and we are proud to have worked alongside our client Vår Energi to complete the Jotun-B removal with mighty Sleipnir safely, sustainably and in the shortest possible time,” remarked Heerema CEO Koos-Jan van Brouwershaven.
Source: Rigzone