Many oil and gas operators around the world are experiencing a significant rise in the costs of Structural Integrity Management (SIM) programs on aging offshore floating facilities (e.g., FPSOs, Semisubmersibles, Spars, etc.) To some degree rising SIM costs on aging assets are unavoidable, but a significant portion is due, in part, to a "reactive" SIM philosophy (both in the project and execution phases of life) that often results in unplanned large scale repair campaigns that could have otherwise been prevented, or at the very least significantly reduced in scope and difficulty, by incorporating a consistent SIM philosophy early on in the project design. This "reactive" approach to SIM is quickly becoming outdated as more and more operators are switching to a pro-active/preventative SIM philosophy by establishing lifecycle SIM objectives as early as concept selection all the way through detailed design and construction phases of project development.
This paper will provide a general overview of design and construction decisions that can help enhance the planning and execution of a SIM program while improving the long term structural integrity performance of offshore floating structures. Examples and observations will also be provided based on the authors' experience supporting major oil and gas companies throughout the world to develop, manage and execute offshore SIM programs.