Reliability assessment of underground pipelines under the combined effect of active corrosion and residual stress

Amirat, Abdelaziz; Mohamed-Chateauneuf, Alaa; Chaoui, Kamel

doi:10.1016/j.ijpvp.2005.11.004

Cited by 126 publications

(52 citation statements)

References 8 publications

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“…Deterministic approaches are based on the safety factor concept and are unable to predict the remaining life of corroded pipelines because the uncertainties are not taken in consideration [3][4][5][6][7]. Figure 1 illustrates the effect of the defect dimension on the security factor.…”

Section: Resultsmentioning

confidence: 99%

“…(1) The safety margin domain is defined by G(X j ) > 0 and the failure domain is attributed to G(X j ) < 0, where X j are the random variables in the system [3][4][5][6][7][8][9][10]. The assessment of the reliability of the pipeline is summarized to evaluation of the reliability index β.…”

Section: Limit State Functionmentioning

confidence: 99%

“…In this paper, we have used the FORM/SORM analyses to estimate the reliability index via Rackwitz-Fissler algorithm [2][3][4][5][6]. Reliability index results have been obtained by means of PHIMECA Software [11].…”

Section: Limit State Functionmentioning

confidence: 99%

See 2 more Smart Citations

Reliability of the High Strength Pipeline Steel under Corrosion Defect

et al. 2017

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The demand of energy based on hydrocarbons, such as gas and oil, requires construction of more and more new pipelines. Therefore, the assessment of the remaining life of these pipeline structures became increasingly important to ensure the continuity of production and distribution operations. The reliability of these industrial facilities is largely conditioned by specific characteristics of each system, by its conditions of use and its environment. Generally, the causes of deterioration of hydrocarbon transportation pipelines are related to the presence of apparent defects (pinholes, cracks, corrosion, etc). This study is aimed to estimate the reliability of pipeline structures. The B31G mechanical model of degradation was used to assess the probability of failure through dimensions of defects.

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Section: Resultsmentioning

confidence: 99%

Section: Limit State Functionmentioning

confidence: 99%

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Reliability of the High Strength Pipeline Steel under Corrosion Defect

et al. 2017

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“…Reliability reflects the characteristics more than the classification accuracy of land cover data, and thus it has numerous impacts in applying the data and affects strategic decision and planning. Reliability evaluation is widely applied in various fields, such as power system, network, software, and pipeline [14][15][16][17]. In the field of geographical information science and remote sensing, Zhang et al [18] proposed a fusion approach of several typical change-detection algorithms based on the reliability of individual change-detection algorithms to generate reliable land cover change information.…”

Section: Introductionmentioning

confidence: 99%

Validation of Land Cover Products Using Reliability Evaluation Methods

et al. 2015

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Validation of land cover products is a fundamental task prior to data applications. Current validation schemes and methods are, however, suited only for assessing classification accuracy and disregard the reliability of land cover products. The reliability evaluation of land cover products should be undertaken to provide reliable land cover information. In addition, the lack of high-quality reference data often constrains validation and affects the reliability results of land cover products. This study proposes a validation schema to evaluate the reliability of land cover products, including two methods, namely, result reliability evaluation and process reliability evaluation. Result reliability evaluation computes the reliability of land cover products using seven reliability indicators. Process reliability evaluation analyzes the reliability propagation in the data production process to obtain the reliability of land cover products. Fuzzy fault tree analysis is introduced and improved in the reliability analysis of a data production process. Research results show that the proposed reliability evaluation scheme is reasonable and can be applied to validate land cover products. Through the analysis of the seven indicators of result reliability evaluation, more information on land cover can be obtained for strategic decision-making and planning, compared with traditional accuracy assessment methods. Process reliability OPEN ACCESSRemote Sens. 2015, 7 7847 evaluation without the need for reference data can facilitate the validation and reflect the change trends of reliabilities to some extent.

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“…The world is moving towards adopting more proactive and optimised approaches to manage underground pipeline systems for their short and long term renewal planning in a more sustainable way (Tee, Khan et al 2014). The main causes of their damage are stress corrosion cracking, wall thickness reduction, and the presence of stress concentrators (Amirat, Mohamed-Chateauneuf et al 2006). Pipelines, like other structures in nature, deteriorate over time.…”

Section: Introductionmentioning

confidence: 99%

Determination of extension of life of corroded offshore pipelines using form and monte carlo structural reliability

Nizamani¹,

Mustaffa²,

Wen³

2015

Proceedings of the Second International Conference on Performance-Based and Life-Cycle Structural Engineering (PLSE 2015)

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The evaluation of the structural strength of an offshore pipeline after 25 years of service is an important issue for extending its lifespan. This is an important environmental and economic issue, especially when the pipeline is related to the oil and gas industry. Remaining strength after corrosion effects are included in the performance equation and can be determined by using maximum operating pressure and capacity equations. The results are then compared from burst test results. In this study, Bayesian updating of probability of failure is used to evaluate the updated probability of failure. The performance equations from the two main codes on corrosion used in this study are B31G and DNV-RP-F101 and they are used validate the results. The sensitivity analysis of the variables such as defect depth and thickness is considered in the analysis. This method could be adopted for evaluating the service life extension and evaluation of pipelines working under extreme environments. FORM and Monte Carlo simulations will be used to determine the updated probability of failure. The method could be used for many engineering structures where either practical approaches are not feasible to determine the remaining life of the structure or the uncertainty of the expected results is too high. The evidence concluded in this study could be used by industry to enhance our understanding of the mechanisms for pipeline failure and processes necessary for its preservation.

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Reliability assessment of underground pipelines under the combined effect of active corrosion and residual stress

Cited by 126 publications

References 8 publications

Reliability of the High Strength Pipeline Steel under Corrosion Defect

Reliability of the High Strength Pipeline Steel under Corrosion Defect

Validation of Land Cover Products Using Reliability Evaluation Methods

Determination of extension of life of corroded offshore pipelines using form and monte carlo structural reliability

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