Heerema Marine Contractors (HMC) has removed the 8,100-tonne Jotun-B jacket in the Norwegian part of the North Sea on behalf of Vår Energi.
The platform was originally installed in 1998 by HMC’s vessel Thialf. Last year, the semi-submersible crane vessel returned to the Jotun Field, which is located 200 km west of Stavanger, to remove the topsides and conductors.
On July 11, 2020 HMC deployed its crane vessel Sleipnir to lift and remove the jacket structure, before transporting it to the quayside at the AF Miljøbase decommissioning site in Vats.
Sleipnir performed the removal operations while running on LNG fuel. According to HMC, this reduces CO2 emissions by 25 percent, NOx emissions by 92 percent and SOx emissions by 99 percent, when compared to traditional marine gas oil crane vessels.