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Proc. ASME. OMAE2021, Volume 2: Structures, Safety, and Reliability, V002T02A033, June 21–30, 2021
Paper No: OMAE2021-62461
...Abstract Abstract Pipelines are one of the most economical and safe means of transporting useful materials, and their design life depends on protection mechanisms present. Marine environments increase corrosion rates due to moisture, and elements like chloride which increase localized pitting...
Proc. ASME. OMAE2021, Volume 2: Structures, Safety, and Reliability, V002T02A035, June 21–30, 2021
Paper No: OMAE2021-63014
... occur . had deepest pits and highest corrosion rates as previously reported in . Magnetite (Fe304) was present in these samples Localized corrosion under insulation (CUI) is difficult to only in year two. Magnetite is a passive oxide formed on the iron detect and our understanding is low compared...
Proc. ASME. OMAE2013, Volume 2B: Structures, Safety and Reliability, V02BT02A016, June 9–14, 2013
Paper No: OMAE2013-11019
... Inspection of deepwater risers for flaws or pits using ILI tools can be challenging. Some lines are designed as “non-piggable”, and it is not unusual for an inspection to be incomplete because of physical constraints. As with any measurement, there will be a degree of error. While deterministic...
Proc. ASME. OMAE2013, Volume 4B: Pipeline and Riser Technology, V04BT04A018, June 9–14, 2013
Paper No: OMAE2013-11015
... against the accelerated fatigue crack growth driven by corrosion. This paper illustrates a methodology for assessing the fitness for service of a steel catenary riser with various levels of pitting corrosion. The methodology uses FEA tools, as well as classical fracture mechanics, to predict the rates...