Vibro Lifting Tool drives 6.5m monopile 24 metres

Driving the pile free hanging from crane Driving the pile free hanging from crane

Cape Holland has recently achieved another milestone with its Vibro Lifting Tool (VLT) on the Maasvlakte 2 in Rotterdam.

A 6.5m diameter monopile was successfully upended and driven to target penetration. Free hanging from the Matador 3 of Bonn and Mees the VLT only needed a net driving time of 15 mins to get the 330t weighing monopile to a penetration depth of 24m. Without any other tool, gripper or installation frame the pile ended up at 0.05° verticality which was well within the set tolerance. For this project, CAPE Holland used a Tandem configuration of the CV-320 VLT-U with a total of 640kgm. The VLT proved an ideal tool to drive the test pile to sufficient depth to place the 700t Blue Piling Hammer on top ready for the inshore testing program.

Dutch vibro-piling specialist Cape Holland has successfully developed the application of vibro-hammers for offshore purposes and claims it has been leading the way in using multiple linked vibro-hammers in both Offshore Wind and the Oil & Gas industry.

In the past years Cape has created and built multiple Vibro Lifting Tools, the latest development for reducing the cost of installation and noise emissions. The VLT is a Lloyd’s Register certified lifting appliance, which can be configured with an upending option. This can significantly save on the installation time by reducing the number of handling operations. The VLT is able to pick up a stored pile (up to 1600t), upend it to a vertical position, lift it to the correct position and drive it down (correcting verticality while driving if necessary) in one single handling operation without the need of a gripper or seabed installation frame. Due to the modular design the equipment can be deployed for the installation of a large range of piles, from small anchor piles to very large XXL Monopiles and anything in between.

Since 2014, Cape Holland has become part of the FG Offshore Group, a privately held UK-headquartered company with offices in Europe, the Gulf of Mexico, South East Asia, India and the Middle East for rapid deployment of specialist grouting and piling equipment. The group comprises FoundOcean Ltd and Cape Holland.

By Jake Frith

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