COI code: ICOPMAS13_061
Paper Language: English
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Authors COMPARISON BETWEEN CONDITIONAL AND UN-CONDITIONAL FAILURE PROBABILITY OF CORRODED GAS TRANSMISSION PIPELINES CONSIDERING STOCHASTIC PROCESS FOR INTERNAL PROSSURE AND CRACK GROWTH RATEMohammad Mahdi Shabani - Offshore Structural Engineering, Petroleum University of Technology, Isfahan, Iran
Mohammad Daghigh - Assistant Professor and Ph.D. in Offshore Engineering, Pars Oil and Gas Company (POGC),
Reza Taravati - Technical Inspector, Iran, Iran
Abstract:Pipelines are the safest and most economical form of natural gas transmission which are remarkable for their efficiency and low cost . Generally, subsea pipelinescarry oil and gas products from wellhead to the riser base . According to study of Shabani , corrosion is the most deteriorative factor on pipeline health and safety. Soidentifying and recognizing corrosion and it’s resultant are essential and necessary for pipeline integrity management . Shabani et. al present a Stochastic-Based Approach fordetermining risk of corroded pipelines considering unconditional form of corrosion attacks. This paper deals with RA of corroded gas transmissionpipelines considering all probable failure modes of corrosion attacks. Reliability level of pipeline is evaluated in three different modes. All pipeline geometricalparameters are modeled as inherent uncertain parameters. Relationship between crack dimension is modeled using correlations. Crack growth rate and internal pressure aremodeled using Poisson Square Wave Process and Ferry orges- Castanheta, respectively, using In-Line Inspection (ILI) and pipe pressure data. Distribution of holes isassessed through pipeline using ILI data. Also, both conditional and un-conditional form of failure modes of corrosion attacks are discussed. Finally, Probability ofFailure (POF) for both conditional and un-conditional is determined using importance sampling technique.
COI code: ICOPMAS13_061
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Shabani, Mohammad Mahdi; Mohammad Daghigh & Reza Taravati, 2018, COMPARISON BETWEEN CONDITIONAL AND UN-CONDITIONAL FAILURE PROBABILITY OF CORRODED GAS TRANSMISSION PIPELINES CONSIDERING STOCHASTIC PROCESS FOR INTERNAL PROSSURE AND CRACK GROWTH RATE, 13th International Conference on Coasts, Ports and Marine Structures, تهران, سازمان بنادر و دريانوردي, https://www.civilica.com/Paper-ICOPMAS13-ICOPMAS13_061.htmlInside the text, wherever referred to or an achievement of this article is mentioned, after mentioning the article, inside the parental, the following specifications are written.
First Time: (Shabani, Mohammad Mahdi; Mohammad Daghigh & Reza Taravati, 2018)
Second and more: (Shabani; Daghigh & Taravati, 2018)
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Type: state university
Paper No.: 1771
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