Decommissioning of an offshore platform as a wind turbine support by using digital twin

The aim of the research project is the decommissioning of an existing oil and gas platform located in the Adriatic Sea and the re-utilization of the three-legs jacket as wind turbine support The project consists of two main phases. In the first phase, the existing structure, the oil and gas platform, is examined through the structural analysis using an RB-FEA software considering the in-place loads applied. Further, the fatigue analysis is performed in order to assess the resistance of the structure respect the long terms environmental actions caused by waves. In the second phase, the top side, hence the transition piece and the deck, is decommissioned and replaced by a wind turbine using the jacket as a basement. As already done in the first phase, the resistance of the jacket is assessed through the structural analysis and the fatigue analysis