Fugro has completed a marine unexploded ordnance (UXO) cable route survey as part of the construction of the 1500MW Hollandse Kust Zuid offshore wind project.
The 13-month project, the second of its kind that Fugro has carried out on behalf of TenneT, involved surveying the route for explosive remnants of war (ERW), including munitions dumped at sea after conflict, and investigating potential targets.
TenneT received the final UXO clearance certificate from Fugro once the cable route corridor was confirmed clear of UXO risk, based on as low as reasonably practicable (ALARP) principles.
The project was delivered in two phases, starting with a complete cable route survey using Fugro’s Geowing remotely operated towed vehicle and other equipment to identify over 3600 potential targets of interest.
Following interpretation of these targets by Fugro, over 700 potential ordnance (pUXO) targets were then investigated by Fugro’s UXO identification vessel, Atlantis Dweller, before the route was declared free of UXO of the size and weight above the contracted threshold.
Fugro global UXO risk mitigation manager Marco Gilissen said: “I am extremely proud of our project team and especially their HSSE record during the project, during which there were no lost time incidents.
“Even with the addition of project scope by the client, the project was still delivered ahead of the original project milestones.”
The Hollandse Kust Zuid wind farm, off the coast of The Hague and Noordwijk, will supply green energy to up to 1.5 million homes.