Visual inspection (by ROV or diver) is the minimum . The RP requires quantitative NDT (MFL, ACFM, UT) at defined intervals, especially for chain segments that have experienced abnormal loading events (e.g., storm overloads).
SCRs are extreme fatigued components. A 2,000m water depth SCR in the Gulf of Mexico might see 500 million fatigue cycles over 20 years. Using F118: dnv-rp-f118
for super duplex risers, umbilicals, and jumper applications. Not a “beginner” doc—users should have baseline metallurgy and fatigue knowledge. For new projects, pair it with the latest DNV-ST-F119 or ST-F201 for dynamic effects. For design, it’s a solid 8/10 —robust where it applies, but limited to its alloy class. Visual inspection (by ROV or diver) is the minimum
systems—essentially high-tech "ultrasound" machines for pipelines—are reliable enough to find tiny, dangerous cracks in the welds that hold massive underwater pipes together. The Industry Context The Problem A 2,000m water depth SCR in the Gulf