The effect of corrosion defects on the burst pressure of pipelines

Netto, Theodoro Antoun; Ferraz, U.S.; Estefen, Segen F.

doi:10.1016/j.jcsr.2005.02.010

Cited by 215 publications

(69 citation statements)

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“…This scenario was necessitated by the increasing corrosion defect depth, which generally results in increased stress concentration on pipelines [18][19][20]. For a given L/D and L/√Dt (Figures 9 and 10 It is evident from the information in Figure 8 that the burst pressure retention ratio (R r ) of the pipes reduced with the increase in d/t, which is similar to the findings of other researchers [5][6][7][8][9]. This scenario was necessitated by the increasing corrosion defect depth, which generally results in increased stress concentration on pipelines [18][19][20].…”

Section: Variability Of the Retained Strength Of The Corroded Pipelinessupporting

confidence: 84%

“…Finite element analysis has been utilized to estimate the burst strength of corroded pipelines by numerous researchers [3][4][5][6][7][8][9]. Wang and Zarghamee [5] applied non-linear finite element analysis to determine the corrosion defect depth growth of pipelines, to establish the effect on the reliability and performance over a given service life duration.…”

Section: Introductionmentioning

confidence: 99%

“…This author showed that the maximum stress and strain on the corroded outside groves of pipelines has a linear relationship with the applied internal pressure on the pipeline. Other research works such as that of Netto, Ferraz and Estefen [8] also utilized FEM and small-scale experimental studies for the determination of the burst pressure of corroded pipelines, while the mechanical-electrochemical approach based on the Multiphysics field coupling technique was used by other authors [11]. The research of these authors [11], showed that in a near neutral pH, when the corrosion is under elastic deformation, mechanical-electrochemical interactions have no effect on corrosion defects.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Finite Element Modelling and Retained Life Estimation of Corroded Pipelines in Consideration of Burst Pressures—A Fractural Mechanics Approach

Ossai

2017

Infrastructures

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This study used Finite Element Modelling (FEM) to determine the relationship between the burst pressure (P b ) of internally, circumferentially corroded pipelines, with the corrosion defect depth (d), pipe wall thickness (t) and the pipe diameter (D). After modelling X46 and X52 grades of pipes, the P b estimated was compared with those determined experimentally and with industry standard models-ASME B31G (modified), RSTRENG, DNV F101, SHELL92 and FITNET FFS. The comparison specified a Root Mean Square Percentage Error (RMSPE) that ranged from 7.06% to 20.4% and a coefficient of determination (R 2 ) that varied from 0.7932 to 0.9813. Multivariate regression was also used to compute a general linear relationship between the burst pressure (P b ) and (d/t), (L/D) and (L/ √ Dt). The resulting FEM burst-pressure model, developed with multivariate regression, was later used to estimate the expected allowable operating pressure of a corroded X46 grade pipeline over the lifecycle duration, for low, mild, high and severe corrosion categories. It was observed that the burst pressure retention ratio (R r ), which is an indicator of the reliability of the pipeline, decreased with the increase in (d) but did not show distinctive changes with the increase in (L). Considering the robustness of the FEM developed in this study, it can be concluded that it will be very vital for flowline design and pipeline integrity management.

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Section: Variability Of the Retained Strength Of The Corroded Pipelinessupporting

confidence: 84%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Finite Element Modelling and Retained Life Estimation of Corroded Pipelines in Consideration of Burst Pressures—A Fractural Mechanics Approach

Ossai

2017

Infrastructures

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“…Meanwhile, according to the statistics from the literature in recent years, corrosion is the most significant factor in the failure of pipelines (T.A. Netto, 2005).…”

Section: Background Informationmentioning

confidence: 99%

“…Netto TA (Netto TA, 2005) conducted research on the effects of burst pressure of pipelines caused by different geometric parameters of defects (mainly on the depth and length of defects) and material parameters (mainly on the yield strength of materials). The research was conducted by indoor small-size burst pressure testing and FEM analysis.…”

Section: The Evaluation Of Defects In Corroded Pipelinesmentioning

confidence: 99%