Allseas’ dynamically positioned single-lift installation/decommissioning and pipelay vessel “Pioneering Spirit” set a world lifting record with the safe and successful removal of Shell UK’s 24,000 t Brent Delta platform topsides from the North Sea on 28 April 2017.
Located in the Brent field, approximately 186 km off the north-east coast of Shetland, the Brent Delta topsides sat on a three-legged gravity-based structure which stands in 140 m of water.
The topsides has since been sea-fastened on board “Pioneering Spirit” for transport to the Able UK decommissioning yard in Teesside, North East England.
In the past platforms have been removed a small piece at a time,” said Manning.Removing platforms in a single lift was a “large swing”, he added. The platform will then be taken by ship to a former shipyard in Hartlepool, where most of the steel will be recycled and sold off.