Jacket Lift System Pioneering Spirit

Allseas, a Swiss-based company with their main engineering office located in Delft, the Netherlands, is one of the major offshore pipelay and subsea construction companies in the world. Allseas will shortly enter the world of installation and decommissioning with their new vessel, the Pioneering Spirit. The Pioneering Spirit is a unique, dynamically positioned vessel for single-lift installation and decommissioning of large offshore oil and gas platforms, and installation of oil and gas pipelines. The Pioneering Spirit will have a topsides lift capacity of 48,000 tonnes and a jacket lift capacity of 25,000 tonnes. In close cooperation with Allseas, Iv-Consult designs the Tilting Lift Beams of the Jacket Lift System.

Iv-Consult’s primary contribution to the JLS is the overall structural design including all the tie in points for the external interfaces, such as the cross beam, jib, hang up frame, up enders and removable tail. Besides the beams, the removable tail and jib are also designed by Iv-Consult from the conceptual phase to the detailed phase. With the jib installed, hoisting and installation operations can also be performed.

Iv-Consult uses its experience with the design of specialistic and innovative handling structures. For the design activities, an automated and extended BIM environment is created in which all the interfaces by third parties are shown. The BIM environment is used for clash check, structural optimisation, E&I routing, maintenance access, fabrication feasibility, et cetera and is always up to date. In this way the process is much more efficient.