For offshore pipelines located in ice environments, the mitigation of ice gouge hazards presents a significant technical challenge. A traditional strategy is to establish minimum burial depth requirements that meet technical and economic criteria. A probabilistic based approach to optimize burial depth requirements based on equivalent stress and compressive strain limit state criteria is presented. The basic methodology is to define ice gouge hazards on a statistical basis, to develop numerical algorithms that model ice gouge mechanisms and pipeline/soil interaction events, to define failure criteria, limit states and target reliability levels and to conduct a probabilistic assessment of pipeline burial depth requirements. Application of the probabilistic design methodology for a generic pipeline design scenario subject to ice gouge hazards is presented. Implications on pipeline design and future applied research initiatives are discussed.
- International Petroleum Technology Institute
Probabilistic Design Methodology to Mitigate Ice Gouge Hazards for Offshore Pipelines
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Kenny, S, Bruce, J, King, T, McKenna, R, Nobahar, A, & Phillips, R. "Probabilistic Design Methodology to Mitigate Ice Gouge Hazards for Offshore Pipelines." Proceedings of the 2004 International Pipeline Conference. 2004 International Pipeline Conference, Volumes 1, 2, and 3. Calgary, Alberta, Canada. October 4–8, 2004. pp. 1925-1933. ASME. https://doi.org/10.1115/IPC2004-0527
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