Case Study: Steel sleeve repair for riser bend The problem Our client had identied an area of internal corrosion inside a riser bend within the platform topsides. It was identied that a fully pressure-retaining welded steel sleeve repair was required to contain the corroded region, for which a bespoke design was required. The solution Jee rst completed a denition phase to establish a number of key criteria, including preferred construction materials and welding philosophy, stand-o within the sleeve and a schedule for the repair. The denition accounted for pipeline contents, weldability issues and future integrity management requirements. Following the denition phase, Jee completed the detailed design of the welded repair sleeve, including nal materials selection, static str

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