Allseas deploys new jacket lifting technology for first time

April 22, 2022
New system removes CNR International’s Ninian Northern jacket.

Offshore staff

CHATEL-SAINT-DENIS, Switzerland – Allseas says that it has successfully deployed its new jacket lifting technology for the first time to remove CNR International’s Ninian Northern jacket from the northern North Sea and transport it intact to shore for recycling.

Weighing in at 8100 tonnes, the first commercial lift with Pioneering Spirit’s revolutionary Jacket lift system (JLS) is one of the heaviest offshore jacket lifts ever, but remains well within the system’s 20,000-tonne single-lift capacity.

Pioneering Spirit arrived in the Ninian field, 160 km northeast of the Shetland Islands, on 14 April. A week later, after final preparations and leg cutting, the eight-legged jacket was lifted safely out of the water and lowered onto the deck for transit. The jacket will be delivered to the Veolia-Peterson yard in Dales Voe, Shetlands. The facility targets 98% steel reuse.

Allseas says that the lift successfully concludes two years of planning and design, which started with the safe and successful single-lift removal of the 14,200 t Ninian Northern platform topsides by Pioneering Spirit in 2020.