Investigations of access fittings (AFs) revealed that the internals of the AFs particularly the primary seal area had suffered severe corrosion damage. Based on corrosion coupon data and accompanying bacteria analysis data & corrosion morphological features, premature failures could be attributed to microbiologically induced corrosion (MIC).
Comparisons with improved data accuracy of installed sensors in lieu of larger quantities of manual spot data are presented. This paper will include the design principles used in the creation of this next-generation platform, end-user input used to refine the design, and recent installation and operational experiences.
The corrosion process of carbon steel in the presence of silica sand deposit in chloride-containing solution at 30 °C was monitored by use of electrochemical noise (EN). Results demonstrated that electrochemical noise with recurrence quantification analysis is useful for monitoring localized under deposit corrosion.
An optical fiber corrosion sensor is developed to monitor the penetration of corrosion pits in steel bars. Simply made by encasing one end of an optical fiber into a steel straw. As corrosion penetrates the steel straw wall, the solution and corrosion products fill inside and contaminate the fiber end surface, resulting in a change in the reflectivity.
The Houston Ship Channel is a modern engineering feat. Brackish water. Chloride induced corrosion. Subsidence. Change in water levels and exposure conditions. These issues are explored in this paper reviewing methodologies and results of service life modeling from a recent multi-structure assessment by the authors.