Client: Ardent Global Marine Services
Location: Ardent Global Marine Services
Year executed: 2017
As part of the Dogger Bank offshore wind farm development project two met masts were installed in 2013 to acquire met ocean data. The data has now been collected and the met masts could be decommissioned. The Dogger Bank is in the North Sea, located 125 and 290 kilometres off the east coast of Yorkshire. It extends over approximately 8660 km2 with its outer limits aligned to the UK continental shelf limit. The water depth across the site is between 18m and 63m below LAT. The full decommissioning scope of the project was awarded to Seafox Contractors B.V., in collaboration with Ardent Global Marine Services. The mono bucket removal scope was subcontracted to SPT Offshore.
The scope for SPT Offshore was provision of suction services on behalf of the removal of two met masts which are based on suction piles (i.e. mono buckets). For this purpose SPT provided relevant documentation, equipment and personnel to safely and efficiently execute the press-out operation. In addition to standard project preparations, an interface frame had been designed, fabricated and tested to connect the SPT equipment onto the existing mono buckets.