INDUSTRY NEWS
Lankhorst High-Capacity Slings For Allseas Jacket Lifting System
Lankhorst Ropes has supplied high capacity, ultra-heavy liſt slings to Allseas’ Pioneering Spirit for the transportation and lowering of a 7,300 tonne jacket for a converter platform for the German offshore project BorWin 5. The Lankhorst Gama 98 slings held the jacket in position above the stern of the Pioneering Spirit for the 2-day journey to the installation site.
Lankhorst heavy liſt slings are an integral part of the Pioneering Spirit’s Jacket Liſting System for platform installation and decommissioning projects. The eight 25m endless slings use a Gama98 Ultra Heavy Liſt rope construction. The ropes were manufactured in Portugal to a length tolerance of +/- 1.5%. The Pioneering Spirit’s jacket liſt system features six blocks to guide the slings; each block is equipped with two endless sling
constructions. Ahead of the BorWin 5 project, the slings were proof loaded according to DNV-ST-N001.
Slings Re-Use for Offshore Projects Aſter the BorWin 5 offshore wind energy project, the Lankhorst slings will be used by the Pioneering Spirit for future installation and decommissioning projects, each having a different load profile during liſting and subsequent transportation. The slings will used to liſt and transport jackets.
Over the past decade, Lankhorst research and development has progressively built industry confidence in the reuse of heavy liſt slings.
“Today we have a proven fatigue performance model for the assessment of a sling’s lifetime together with the development of safe and reliable engineered liſting plans,” says Marcel van der Molen, Sales Director, Lankhorst Ropes.
“Lankhorst’s ability to manufacture slings to a consistent and repeatable length accuracy has been fundamental to establishing confidence in our fatigue performance modelling.”
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