Journal of the Society of Naval Architects of Korea (대한조선학회논문집)

The Society of Naval Architects of Korea (대한조선학회)
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Probabilistic Risk Analysis of Dropped Objects for Corroded Subsea Pipelines

부식을 고려한 해저 파이프라인의 확률론적 중량물 낙하 충돌 위험도 해석

  • Kumar, Ankush (Department of Naval Architecture and Ocean Engineering, Pusan National University) ;
  • Seo, Jung Kwan (The Korea Ship and Offshore Research Institute, Pusan National University)
  • Received : 2017.08.03
  • Accepted : 2017.11.10
  • Published : 2018.04.20
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Abstract

Quantitative Risk Assessment (QRA) has been used in shipping and offshore industries for many years, supporting the decision-making process to guarantee safe running at different stages of design, fabrication and throughout service life. The assessments of a risk perspective are informed by the frequency of events (probability) and the associated consequences. As the number of offshore platforms increases, so does the length of subsea pipelines, thus there is a need to extend this approach and enable the subsea industry to place more emphasis on uncertainties. On-board operations can lead to objects being dropped on subsea pipelines, which can cause leaks and other pipeline damage. This study explains how to conduct hit frequency analyses of subsea pipelines, using historical data, and how to obtain a finite number of scenarios for the consequences analysis. An example study using probabilistic methods is used.

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