Disposal Eider Alpha platform topside.

Disposal of TAQA UK’s Eider Alpha platform topside. The structure was lifted in a single operation by Allseas’ heavy-lift vessel, Pioneering Spirit, before being transported to the AF Environmental Base in Vats, Norway, for dismantling and disposal.

The topside was 12,000 metric tonnes. The LOI includes an option for a second topside. Including the option the total weight is between 25.000 and 30.000 metric tonnes.

The topside will be processed for dismantling and recycling, with a target of at least 97% materials recovery.

The load-in system consisted of a 200-metre-long, custom-built skid track, levelled with millimetre precision. Across a 10-metre span, the maximum allowable height deviation was ±5 mm.

The operation was meticulously planned using digital models and site-specific survey requirements, followed by physical verification on location.

Recycling process

AF Offshore Decom sends the recovered metal to a recycling partner whose process emits 85 % less CO₂ than conventional ore-based production due to the use of hydropower as a cleaner energy source for the electric arc furnace. This equates to a reduction of 1.9 tonnes of CO₂ per tonne of recycled metal, which is used in products such as reinforcement steel for new buildings. Marine growth will be composted and turned into topsoil, while hazardous waste is safely treated and disposed of in line with regulations, site permits, and industry best practice.