L6-B Project

Wintershall Noordzee BV contracted Scaldis Marine Contractors NV to install the L6-B platform in water 35m deep. The platform is located 25NM north west of Terschelling, the Netherlands in the Dutch sector of the North Sea.

Wintershall and Scaldis jointly developed a methodology that focused on minimising the duration all offshore activities. Reducing the duration of the offshore activities automatically reduces risk and overall costs.

The newly developed methodology covers the transportation and installation of the complete platform to the site.

The complete platform will be picked up from a quayside in Rotterdam by the HLV Rambiz which has a lifting capacity of 3.300 tonnes. A special tool has been developed with hydraulic opening doors to enclose the platform mast. Rigging will be connected via hydraulic shackles to the suction cans at the bottom part of the foundation. The structure will then be lifted from the quayside in the hooks of the HLV Rambiz and transported to the installation site.

Upon arrival on site HLV Rambiz will moor in the correct position and orientation. The complete platform will be lowered until the suction cans reach the seabed. Scaldis has subcontracted Suction Pile Technology (SPT) to execute the actual suction operations.