With the ageing of the North Sea fleet of platforms and semi-submersibles, the importance of maintaining structural integrity offshore is increasingly recognised and structural inspection plays a significant role in demonstrating ongoing integrity and the potential for life extension. Structural integrity (SI) monitoring can complement existing inspection techniques to provide greater confidence in structural integrity or to reduce inspection cost. It has been found that offshore experience of SI monitoring is limited to date and that current systems are for bespoke applications. This report focuses on fixed steel structures, topsides and semi-submersible hulls. This report and the work it describes were funded by the Health and Safety Executive (HSE).

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