Results 161 to 170 of about 495 (214)
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Effects of one mooring line failure on the behaviour of a work ship
Proceedings of the Institution of Civil Engineers - Maritime Engineering, 2022The dynamic performance of a work ship with a mooring line failure was studied. A fully coupled dynamic analysis program (Ansys Aqwa) was applied to simulate ship motions and mooring line dynamics. The first- and second-order wave excitation forces were calculated using the three-dimensional diffraction/radiation theory, and the behaviours of the ...
Haitao Wu, Zhiyang Zhang
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Failure Probability Analysis Techniques for Long Mooring Lines
Offshore Technology Conference, 1992ABSTRACT This paper describes statistical techniques for analyzing failure probabilities of long mooring lines. The long line is treated as a series of segments, each as long as the break or fatigue test specimens. Termination failure statistics are treated separately.
J.F. Flory +3 more
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Offshore Technology Conference, 2023
Abstract Alternative methods to using physical sensors for monitoring the integrity of mooring lines on floating offshore platforms are of great interest in the Offshore O&G industry. These alternative methods can be used in parallel with the physical sensors at the start of the service life of the asset, measurements from the ...
Djoni Eka Sidarta +5 more
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Abstract Alternative methods to using physical sensors for monitoring the integrity of mooring lines on floating offshore platforms are of great interest in the Offshore O&G industry. These alternative methods can be used in parallel with the physical sensors at the start of the service life of the asset, measurements from the ...
Djoni Eka Sidarta +5 more
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Neural Network Based Adaptive Control for a Thruster Assisted Mooring Vessel in Mooring Line Failure
Offshore Technology Conference Asia, 2016Abstract Classification society standard requires redundancy in floating vessels with thruster assisted mooring system, but it is not avoidable for floating vessels to drive off in an instant of a mooring line failure such as line breakage or dragging of anchor.
H. Kwon, N. Kim
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Sensitivity Analysis of an ANN-Based System for Detection of Mooring Line Failure
Volume 1: Offshore Technology, 2020Abstract Monitoring the integrity of mooring lines on floating offshore platforms is one of the key factors in ensuring safe and productive offshore operations. Sensors, such as inclinometers, compressive load cells or strain sensors, can be used to monitor the inclination angles or tensions on mooring lines.
Ho Joon Lim +3 more
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Progressive Mooring-Line Failure of a Deepwater MODU in Hurricane Conditions
Volume 1: Offshore Technology, 2009During 2004–2005, three consecutive category-5 storms hit the central region of Gulf of Mexico (GOM) and damaged numerous drilling and production platforms. Since then, a number of forensic studies have been conducted to better understand the failure causes and mechanism.
Zhi Zhang, M. H. Kim, E. G. Ward
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Volume 1: Offshore Technology; Offshore Geotechnics, 2019
Abstract This paper presents Part 2 in the development of an Artificial Neural Network (ANN) model for detection of mooring line failure of a spread-moored FPSO, global performance analysis used to generate the training and test data for the study.
Johyun Kyoung +4 more
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Abstract This paper presents Part 2 in the development of an Artificial Neural Network (ANN) model for detection of mooring line failure of a spread-moored FPSO, global performance analysis used to generate the training and test data for the study.
Johyun Kyoung +4 more
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NeMo: A Multi-Draft Mooring Line Failure Detection System Based on FPSO Predicted Motion
Volume 1: Offshore Technology, 2023Abstract Mooring line breakage of a moored offshore Floating Production Storage and Offloading (FPSO) platform results in an increased load on the remaining lines, worsening their degradation rates. Furthermore, a line break causes the FPSO to change its motions and move away from the desired location.
Amir Muhammed Sa'ad +5 more
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Engineering Failure Analysis, 2015
Abstract A moored ship can experience problems when subjected to heavy environmental loads. In most cases, wind and current loads are the only design considerations for the mooring situation in the harbor, and wave loads are not considered due to the low wave amplitudes in harbors.
Kyoung-Hyun Lee +2 more
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Abstract A moored ship can experience problems when subjected to heavy environmental loads. In most cases, wind and current loads are the only design considerations for the mooring situation in the harbor, and wave loads are not considered due to the low wave amplitudes in harbors.
Kyoung-Hyun Lee +2 more
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Lessons Learned From Norwegian Mooring Line Failures 2010–2013
Volume 4A: Structures, Safety and Reliability, 201415 failures of offshore mooring lines have occurred in the period 2010–2013 on the Norwegian Continental Shelf. The failures are cause by a mixture of overload, fatigue and mechanical damages. Failure statistics from the period 2010–2013 are presented and compared it with earlier statistics. In the period 1996–2005 a high number of cases
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