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1-20 of 29
Keywords: chain link
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Proceedings Papers
Bonga Mooring Top Chain Replacement Project – Lessons Learnt from Execution
Available to PurchasePublisher: Offshore Technology Conference
Paper presented at the Offshore Technology Conference, May 5–8, 2025
Paper Number: OTC-35894-MS
... 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...
Proceedings Papers
Mooring Chain Breakage on GoM Platform
Available to PurchasePublisher: Offshore Technology Conference
Paper presented at the Offshore Technology Conference, May 5–8, 2025
Paper Number: OTC-35763-MS
... 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...
Proceedings Papers
Stereo Image System for Inspection of Mooring Chain in the Splash Zone
Available to PurchaseLashika Medagoda, Thomas Van Bruggen, Mitchell Galea, Hamish Morgan, Tajamul Syed, Abraham Kazzaz, Fraser Hamersley, Jordan Jolly
Publisher: Offshore Technology Conference
Paper presented at the Offshore Technology Conference, May 2–5, 2022
Paper Number: OTC-32110-MS
... 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...
Proceedings Papers
Appomattox Mooring System Lessons Learned
Available to PurchasePublisher: Offshore Technology Conference
Paper presented at the Offshore Technology Conference, May 4–7, 2020
Paper Number: OTC-30887-MS
... 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...
Proceedings Papers
Effects of Uniform and Mega Pitting Corrosion on Residual Strength of Degraded Offshore Mooring Chain
Available to PurchasePublisher: Offshore Technology Conference
Paper presented at the Offshore Technology Conference, May 6–9, 2019
Paper Number: OTC-29402-MS
.... 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...
Proceedings Papers
Assessing Fatigue Life of Corroded Mooring Chains Through Advanced Analysis
Available to PurchaseSue Wang, XiYing Zhang, Tom Kwan, Kaitung Ma, Zhen Li, David A. Baker, Amir Izadparast, Gary H. Farrow, Andrew E. Potts, Aravind Nair, Milind L. Prabhu, Pedro M Vargas, Imanol Martinez Perez, Meng Luo, Emmanuel Fontaine
Publisher: Offshore Technology Conference
Paper presented at the Offshore Technology Conference, May 6–9, 2019
Paper Number: OTC-29449-MS
... 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...
Proceedings Papers
Correlation of Finite Element Analysis FEA Predicted Residual Strength of Degraded Offshore Mooring Chains with Test Data
Available to PurchasePublisher: Offshore Technology Conference
Paper presented at the Offshore Technology Conference, May 6–9, 2019
Paper Number: OTC-29528-MS
... 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...
Proceedings Papers
SCORCH JIP - Overview of Project and Summary of Findings
Available to PurchaseAndrew Potts, Phil Kurts, Kanishka Jayasinghe, Andrew Kilner, Rob Melchers, Tim Lee, Richard Chaplin
Publisher: Offshore Technology Conference
Paper presented at the Offshore Technology Conference, April 30–May 3, 2018
Paper Number: OTC-29017-MS
.../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...
Proceedings Papers
API RP 2SK 4 th Edition - An Updated Stationkeeping Standard for the Global Offshore Environment
Available to PurchasePublisher: Offshore Technology Conference
Paper presented at the Offshore Technology Conference, April 30–May 3, 2018
Paper Number: OTC-29024-MS
... . 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...
Proceedings Papers
Mooring Chain Wear Experiments and Findings
Available to PurchasePublisher: Offshore Technology Conference
Paper presented at the Offshore Technology Conference, April 30–May 3, 2018
Paper Number: OTC-28737-MS
... 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...
Proceedings Papers
Advances in Low Cost, Quantitative Inspection Techniques for Floating Systems
Available to PurchasePublisher: Offshore Technology Conference
Paper presented at the Offshore Technology Conference, May 1–4, 2017
Paper Number: OTC-27633-MS
... 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...
Proceedings Papers
Chain Out of Plane Bending (OPB) Joint Industry Project (JIP) Summary and Main Results
Available to PurchasePublisher: Offshore Technology Conference
Paper presented at the Offshore Technology Conference, May 4–7, 2015
Paper Number: OTC-25779-MS
... 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...
Proceedings Papers
Technical Challenges of the CLOV Oil Loading Terminal
Available to PurchasePublisher: Offshore Technology Conference
Paper presented at the Offshore Technology Conference, May 4–7, 2015
Paper Number: OTC-25863-MS
... 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...
Proceedings Papers
SCORCH JIP - Findings from Investigations Into Mooring Chain and Wire Rope Corrosion in Warm Waters
Available to PurchasePublisher: Offshore Technology Conference
Paper presented at the Offshore Technology Conference, May 4–7, 2015
Paper Number: OTC-26017-MS
... 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...
Proceedings Papers
SCORCH JIP - Feedback on MIC and Pitting Corrosion from Field Recovered Mooring Chain Links
Available to PurchasePublisher: Offshore Technology Conference
Paper presented at the Offshore Technology Conference, May 5–8, 2014
Paper Number: OTC-25234-MS
... 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...
Proceedings Papers
Mooring Integrity Management: A State-of-the-Art Review
Available to PurchasePublisher: Offshore Technology Conference
Paper presented at the Offshore Technology Conference, May 5–8, 2014
Paper Number: OTC-25134-MS
... 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...
Proceedings Papers
Microbiologically Influenced Corrosion in Mooring Systems - Field Experience
Available to PurchasePublisher: Offshore Technology Conference
Paper presented at the Offshore Technology Conference, May 5–8, 2014
Paper Number: OTC-25375-MS
... 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...
Proceedings Papers
Mooring System Life Extension Using Subsea Inspection Technologies
Available to PurchasePublisher: Offshore Technology Conference
Paper presented at the Offshore Technology Conference, May 6–9, 2013
Paper Number: OTC-24184-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...
Proceedings Papers
Nominal vs. Manufactured Chain Link Dimensions and the Implications on In-Service Inspection
Available to PurchasePublisher: Offshore Technology Conference
Paper presented at the Offshore Technology Conference, April 30–May 3, 2012
Paper Number: OTC-23493-MS
... 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...
Proceedings Papers
SCORCH JIP: Examination and Testing of Severely-Corroded Mooring Chains From West Africa
Available to PurchasePublisher: Offshore Technology Conference
Paper presented at the Offshore Technology Conference, April 30–May 3, 2012
Paper Number: OTC-23012-MS
... 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...
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