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Publications
Alencar, M.H., Silva, L.M.R., Bhardwaj, U. and Guedes Soares, C. (2023), Risk identification and Bowtie analysis for risk management of subsea pipelines, 33rd European Safety and Reliability Conference (ESREL2023), 3-8 September, Southampton, UK, pp. 2107-2114
In this paper, a risk identification based on the Bowtie analysis is formulated, exploring a subsea pipeline system. Transporting dangerous materials by subsea pipelines during field operation is defined as a hazardous situation. The major pipeline causes during the field operation are also considered: external and internal corrosion; material, weld, and equipment failures; incorrect operation; and external interference. Based on this information, it is established that the main failure modes of subsea pipelines during the transport of dangerous materials by subsea pipelines are mechanical, structural, and external interference failures. Furthermore, environmental and financial aspects are considered in analysing the main consequences in the Bowtie diagram. Finally, barriers are implemented to prevent an undesirable incident or limit the consequences. The Bowtie helps structure the problem and consequently monitor the effectiveness of preventive and mitigating barriers, allowing risks to be better understood and managed over time, recording causes, consequences, and preventive and reactive controls for better monitoring.
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