As floating production systems continue operating beyond their original design life, operators must demonstrate structural integrity using modern life extension assessment methodologies. This presentation examines approaches for evaluating legacy FPS hull and topsides structures that were designed before current finite element analysis techniques became standard practice. It will discuss methodologies for establishing structural capacity, addressing apparent design non-compliances identified during reassessment, and developing practical engineering solutions that support continued safe operation. Attendees will gain insight into best practices for integrating life extension modifications into operating facilities while minimizing execution risk, maintaining regulatory compliance, and supporting long-term asset reliability.