Abstract
In terms of reel-lay installation in deep water, studies on the pipeline during the process of tensioning have been completed based on theories of risk and reliability analysis and Ergonomics. Qualitative risk results, including minimum cut sets, structural importance and probability expression of system failure, are obtained from fault tree analysis. Also, quantitative risk results, mainly consisting of failure probability and reliability index of pipeline plastic deformation, are worked out through Monte Carlo simulation. Simultaneously, scientific suggestions based on Ergonomics are provided. Conclusions drawn from this paper can, to some extent, provide certain references for reel-lay installation in deep water.
Highlights
Reel-lay installation, emerging in the 20th century, is a new pipe-laying method in deep water
Supposing pipeline failure during tensioning in reel-lay installation is the top undesired event, fault tree analysis is conducted from Figures 5-8
Failure of pipeline during tensioning in reel-lay installation is regarded as top undesired event, which mainly results from four reasons, namely overloading, management failure, third-party damage and plastic deformation failure
Summary
Reel-lay installation, emerging in the 20th century, is a new pipe-laying method in deep water. Safety and reliability problems of reel-lay installation have bothered engineers for a long time. Researches in this field are in a small quantity throughout the world. Bai [1] have introduced integrity management into subsea system, includeing fault tree analysis and reliability analysis. It doesn’t conduct risk analysis of reel-lay installation in detail. Reel-lay installation is relatively risky in submarine pipeline. Studies on risk and reliability analysis of pipelines are of high necessity for the development of reel-lay installation in deep water. Safety suggestions to reel-lay installation were given
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