... having chains in the upper segment connecting to the fairlead, with wire or fiber ropes at the middle segment while the bottom segment consists of chain links towards the anchor on the seabed. With this arrangement, the top chain is susceptible to corrosion due to the closeness to the sea surface...

... Abstract In 2023 a mooring chain breakage was discovered at the Titan platform in US waters in the Gulf of Mexico. Chain links, including the broken link, were then brought to shore for investigation. Hurricane Ida, which passed directly over the Titan platform in August 2021, is identified...

... on the proficiency and judgement of the operator on the field. The LEA system overcomes these problems, providing objective, accurate and repeatable measurements based on reconstructed photorealistic 3D models. Imagery of the chain links is captured systematically which was used to generate 3D reconstructions...

... upstream oil & gas chain link test segment operation rope segment appomattox chain segment towimor installation stopper specification chain jack platform chain requirement subsea system mooring system artificial intelligence project team rope manufacturer manufacturer stiffness...

.... The investigation sought through the conduct a series of FEA assessments employing a parametric model of idealized degraded chain links to derive the theoretical relationship beteen the residual capacity for varying levels of uniform corrosion, and the residual capacity for varying size, locations and shapes...

... Abstract Evaluation of corroded chain link for continued use or life extension is a challenging task for the industry. ABS, together with fifteen (15) participating organizations, initiated the Fatigue of Corroded Chains (FoCCs) Joint Industry Project (JIP) in 2016. The objective of the FoCCs...

... engineering parameters such as friction coefficient, and numerical modelling techniques. The developed method was validated by the correlation of the PBL against a number of physical break tests. This paper presents a review of the break strength test data of pitting corrosion degraded chain links. The FEA...

.../wave action and water quality. Full-size chain links and lengths of smaller chain were also deployed for comparison, with special laboratory tests to investigate the effect of nutrient content on microbiologically influenced corrosion (MIC). Wire rope tests were carried out for a similar variation...

... . E. Fontaine , J. Rosen , A. Potts , K. Ma , R. Melchers , " SCORCH JIP - Feedback on MIC and Pitting Corrosion from Field Recovered Mooring Chain Links ", OTC 25234 , OTC Conference , May 2014 . D. Witt , K. Ma , T. Lee , C. Gaylarde , S...

... offshore technology conference progression shoup interlink motion diameter chain wear wear rate equation subsea system wear coefficient chain link rabinowicz prediction mooring system Abstract Whilst mooring chain design practice has traditionally considered wear and corrosion together...

... of component degradation. In addition, the ability to respond rapidly to event-based forms of degradation is significantly improved. This approach will be demonstrated by a case study of the inspection of a known area of risk that is traditionally difficult to inspect and interpret - mooring chain links within...

... in the chain links. The intimate mating contact that occurs during the proof loading and the high pretension of the more contemporary mooring designs have been identified as aggravating factors for this phenomenon. A Joint Industry Project (JIP), gathering 28 different companies, was started in 2007 to better...

... distributions of the chain link connected to the chain stopper are critical inputs for one of the most critical design parameters; OPB chain fatigue. The frequency domain approach was deemed conservative when compared with a verification of the sea states with the highest fatigue damage in the 3 hour time...

... endurance well integrity laboratory test wire rope corrosion pipeline corrosion corrosion guidance subsurface corrosion consideration compound riser corrosion design guidance chain link Presentation of OTC-26017-MS Presentation of OTC-26017-MS API ( 2005 ). ‘Design...

... corrosion pipeline corrosion submerged near-surface zone indonesia strength uniform corrosion offshore technology conference materials and corrosion scorch jip chain link melcher seawater investigation photogrammetry bacteria flowline corrosion riser corrosion upstream oil & gas splash...

... and inspection technology, and mooring integrity management systems. operator corrosion upstream oil & gas strength subsea system mechanism installation chain link requirement offshore monitoring procedure fpso mooring system inspection wire rope presentation line failure guidance...

... sulphide touchdown zone mic process artificial intelligence corrosion materials and corrosion touchdown region riser corrosion corrosion shell chain link corrosion rate corrosion product pipeline corrosion oxygen corrosion process inspection identification sidebar OTC-25375-MS...

... operators to identify the most severely degraded sections in a mooring system. Data collected makes it possible to produce 3D models of chain links which are used to evaluate the extent of material loss. The application of finite element analysis enables the client to quantify the residual strength...

... Abstract Requirements for both manufacture of chain links and in-service discardcriteria for inspection are well established by industry standards. Howeverstandards for discard criteria do not take into account one key element of themanufacturing process: the bending of round barstock around...

... This paper summarizes some of the on-going work by the SCORCH JIP oncorroded/pitted chain links that were recovered from a Floating StorageOffloading (FSO) system based in West Africa. Although these links were inservice for only seven years, they experienced severe pitting corrosion (Figure 1) not noted...