Platform Janice
Safe, sustainable decommissioning of the Janice FPU using advanced removal methods, with final recycling at AF Environmental Base Vats.
Project status
About the project
The semi-submersible rig, Janice Floating Production Unit (FPU), weighing approximately 18,500 tonnes, was safely and sustainably decommissioned.
18 500
tonne rig
Raunesveien 597, 5578 Nedre Vats
The Janice project included Engineering Down and Cleaning (EDC) of process equipment, followed by demolition and recycling. Removal was carried out using a combination of Piece Small and Reverse Installation methods while the Floating Production Unit (FPU) stayed afloat at the quayside, ensuring structural integrity and stability throughout the operation.
Stage-by-stage process
The semi-submersible rig, weighing approximately 18,500 tonnes, was cut up and processed onshore at the AF Environmental Base in Vats, near Haugesund. This was the first time a semi-submersible rig was recycled in Norway using this method, marking an important expansion of offshore decommissioning capabilities.
The project was executed in several phases:
Phase 1: Cleaning the processing plant and all associated piping and systems.
Phase 2: Demolition of the processing plant.
Phase 3: Cutting up and recycling the original rig structure.
The recycling rate achieved was between 95% and 98%, reinforcing a strong commitment to sustainability and circular solutions.