Jan De Nul Orders Pile Gripper for Installation Vessel Les Alizés
Jan De Nul Group has selected Imeca, a trade mark of REEL SAS, for the delivery of a highly advanced electrical Motion-Compensated Pile Gripper for its new Floating Installation Vessel Les Alizés. The tailor-made gripper, with an integrated X-Laboratory guidance and survey system, will allow safe and efficient installation of next-generation monopiles with pin-point accuracy. Gripper delivery is planned for H2 2022 and this new mission equipment helps to future proof Jan De Nul Group foundation installation capability.With the construction of both Les Alizés and the Jack-Up Installation Vessel Voltaire well underway, Jan De Nul Group will shortly have the capability to not only install next-generation foundations, but also wind turbines, safely and efficiently.
Les Alizés allows the installation of very large components including jackets exceeding 4,500 mt, and heights in excess of 100 m; and monopiles weighing over 3,000 mt and an outer diameter exceeding 12 m. It is of paramount importance that the installation process for these very large components can be safely executed.
The Imeca Motion-Compensated Pile Gripper will have some very unique features that will increase operational control during the installation process, including:
An integrated survey system that enables continuous monitoring of the monopile from insertion into the gripper to hammering completion. This will considerably improve the control over the monopile and will positively affect the decision-making process between operational steps.
Thanks to the X-Laboratory Guidance System’s embedded emergency recovery control mode, the gripper will be able to control the monopile even in the hypothetical absence of the DP system and thrusters. The gripper will operate autonomously to keep the monopile and vessel stable, long enough to return all systems to a safe state.