Floating Production Storage and Offloading (FPSO) units and Single Point Mooring (SPM) CALM buoy systems are critical offshore assets whose safe operation is increasingly challenged by ageing infrastructure, corrosion, and low profit margins in the oil and gas industry. Extending the service life of FPSO and SPM CALM buoy mooring chains offers significant economic and environmental advantages by reducing unplanned downtime and avoiding premature capital replacement. This study presents a practical life extension approach based on the assessment of corrosion effects and the analysis of historical inspection and operational data from ageing offshore mooring systems. The framework supports informed engineering decisions aimed at maintaining structural integrity, optimizing inspection and maintenance strategies, and minimizing additional capital and operational expenditures. The findings demonstrate that effective corrosion management and data-driven integrity assessments can safely prolong the operational life of offshore mooring chains while ensuring reliability and cost efficiency
Chinedu Michael Okorie (Mon,) studied this question.
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