Abstract
The probabilistic approach is the best way to give realistic answers for design and maintenance and it is considered as a powerful decision-making tool. In the present paper, assessment of the failure probability of corroded pipeline subjected to internal pressure is estimated by using the first order reliability method (FORM). Measurements of defect dimensions have been achieved changed into collected by using ultra sound inspection probe through a 75-km pipeline portion on one of the main Algerian high pressure gas transportation that has been in service for 30 years. The sensitivity analyses have been carried out on random variables to identify the importance of the parameters within the reliability mechanical model. The modified B31G code has been coupled as a mechanical model, with Rackwitz optimization algorithm by using PHIMECA Software. The limit state function resumes the difference between the pipeline burst pressure and the pipeline operating pressure. The aim of the present work is to make in evidence the competitive importance of pressure service, wall thickness and the defect depth with regards to defect length and to determine the influence of the coefficients of variation on the failure probability and the remaining life of the pipeline. A diagram based on the reliability index results is proposed to predict the pipeline degradation and it can be used as a decision tool for maintenance program.
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Keshtegar B, Miri M (2014) Reliability analysis of corroded pipes using conjugate HL–RF algorithm based on average shear stress yield criterion. Eng Fail Anal 46:104–117
Yeom KJ, Lee YK, Oh KH, Kim WS (2015) Integrity assessment of a corroded API X70 pipe with a single defect by burst pressure analysis. Eng Fail Anal 57:553–561
Chen Y, Zhang H, Zhang J, Li X, Zhou J (2015) Failure analysis of high strength pipeline with single and multiple corrosions. Mater Des 67:552–557
Chouchaoui BA, Pick RJ (1994) Behaviour of circumferentially aligned corrosion pits. Int J Press Vessel Pip 57(2):187–200
Valor A, Caleyo F, Hallen JM, Velázquez JC (2013) Reliability assessment of buried pipelines based on different corrosion rate models. Corros Sci 66:78–87
Cosham A, Hopkins P, Macdonald KA (2007) Best practice for the assessment of defects in pipelines-corrosion. Eng Fail Anal 14(7):1245–1265
Azevedo CR (2007) Failure analysis of a crude oil pipeline. Eng Fail Anal 14(6):978–994
Ahammed M, Melchers RE (1997) Probabilistic analysis of underground pipelines subject to combined stresses and corrosion. Eng Struct 19(12):988–994
Ahammed M, Melchers RE (1996) Reliability estimation of pressurized pipelines subject to localized corrosion defects. Int J Press Vessel Pip 69(3):267–272
Ahammed M (1997) Prediction of remaining strength of corroded pressurized pipelines. Int J Press Vessel Pip 71(3):213–217
Ahammed M, Melchers RE (1994) Reliability of underground pipelines subject to corrosion. J Transp Eng 120(6):989–1002
ASME B31 Committee (2009). ASME B31G-2009: manual for determining the remaining strength of corroded pipelines. Am Soc Mech Eng
Kiefner JF, Vieth PH (1989) A modified criterion for evaluating the remaining strength of corroded pipe (no. PR-3-805). Battelle Columbus Div, OH
Amirat A, Benmoussat A, Chaoui K (2009) Reliability assessment of underground pipelineder active corrosion defects. In damage and fracture mechanics. Springer, Netherlands, pp. 83–92
Caleyo F, Gonzalez JL, Hallen JM (2002) A study on the reliability assessment methodology for pipelines with active corrosion defects. Int J Press Vessel Pip 79(1):77–86
Amirat A, Mohamed-Chateauneuf A, Chaoui K (2006) Reliability assessment of underground pipelines under the combined effect of active corrosion and residual stress. Int J Press Vessel Pip 83(2):107–117
Sahraoui Y, Khelif R, Chateauneuf A (2013) Maintenance planning under imperfect inspections of corroded pipelines. Int J Press Vessel Pip 104:76–82
PHIMECA-reliability-based design and analysis. User’s manual, version 1.6, Aubière, France (2002)
Qian G, Niffenegger M, Zhou W, Li S (2013) Effect of correlated input parameters on the failure probability of pipelines with corrosion defects by using FITNET FFS procedure. Int J Press Vessel Pip 105:19–27
Hasofer AM, Lind NC (1974) Exact and invariant second-moment code format (for reliability analysis in multivariate problems). American Society of Civil Engineers, Engineering Mechanics Division, Journal 100:111–121
Lemaire M (2013) Structural reliability. John Wiley & Sons
Ditlevsen O, Madsen HO (1996) Structural reliability methods, vol 178. Wiley, New York
Gong JX, Yi P (2011) A robust iterative algorithm for structural reliability analysis. Struct Multidisc Optim 43:519–527
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Zelmati, D., Ghelloudj, O. & Amirat, A. Reliability estimation of pressurized API 5L X70 pipeline steel under longitudinal elliptical corrosion defect. Int J Adv Manuf Technol 90, 2777–2783 (2017). https://doi.org/10.1007/s00170-016-9580-6
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DOI: https://doi.org/10.1007/s00170-016-9580-6