Topside weight in tonnes
Developed new removal method – "Piece Small”
The Ekofisk tank was the start of the Norwegian oil adventure. When the tank’s superstructure was to be removed, it was also the start of a new and forward-looking industry: recycling of offshore installations. A social challenge in which AF saw the opportunity to use its expertise from the removal of industrial plants onshore in an offshore environment. Based on a study carried out in 2004, AF was commissioned to remove the superstructure on the Ekofisk tank. The project was carried out as a general contract at a fixed price. The work included engineering, planning, removal and disposal (EPRD).
AF developed a completely new method of removal, "Piece Small". Excavators fitted with claws and sorting equipment were moved offshore. The tank was then dismantled, cut up, sorted and loaded onto specially-built containers and transported ashore with supply vessels from Heerema.
The Ekofisk tank was then made ready for recycling at what is currently Europe’s most state-of-the-art recycling plant for decommissioned offshore installations, the AF Environmental Base at Vats.
A total of 98% of the steel from the Ekofisk tank was recycled and used, for example, in reinforcement iron in buildings.