Tensile and Toughness Properties of Pipeline Girth Welds

Gianetto, J. A.; Bowker, J. T.; Bouchard, R.; Dorling, D. V.; Horsley, David

doi:10.1007/bf03266574

Cited by 4 publications

(1 citation statement)

References 7 publications

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“…-Developing of newer non-destructive testing methods in order to identify the girth weld defects in operating pipelines [17][18][19]] -Achieving FEM calculations in order to investigation of defect size tolerances in girth welds [20], describing the damage process [8,9], or to preparation of fracture mechanical analyses [21,22] -Performing investigations on specimens in order to determine and analyze the tensile and toughness properties [23], yield strength mismatch [24], or fracture properties at low temperatures [25] of girth welds; to develop novel test method for mechanical properties of characteristic zones of girth welds [26]; to develop "field girth welding simulation" procedure evaluating properties in HAZ of girth welds [27]; or to ensure the safe operation of a pipeline transporting environments with hydrogen content [28] -Applying local approach to fracture in order to analysing of full-scale pipeline tests containing girth weld defects [29] -Performing investigations on full-scale pipeline sections for describing the behavior of the pipelines under different loading conditions [5,30,31], furthermore for the comparison of the results based on full-scale pipes and small-case specimens [32] -Applying engineering critical assessment (ECA) methods [33,34] based on different standards (e.g., [35,36] -Developing survival analysis models for girth weld failure prediction [37] In [29] publication, the full-scale test was played an intermediate role between numerical simulations and specimen tests. A full size test was carried out on a welded pipeline segment containing a girth weld defect; the pipe was subjected to internal pressure and superimposed bending.…”

Section: Introductionmentioning

confidence: 99%

Fatigue and burst tests of full-scale girth welded pipeline sections for safe operations

et al. 2023

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The main objective of our ongoing research is data collection for integrity management (IM) tasks, in other words for pipeline integrity management system (PIMS), helping the transporting pipeline operators in different decision situations. Either the reserves of the girth welds after a long-term operation can be identified or the girth welds with different defects should be repaired and/or replaced. From the operators’ point of view, the long-term operation is the cost-effective way; however, from the safety point of view, the managing of the lifecycle of the pipeline is the more reliable way. Unfortunately, inadequate girth welds cause catastrophic damages in transporting pipelines, all over the world. Consequently, the optimal operation of the pipelines is a complex task. The paper introduces our investigation program executed on full-scale pipeline sections. Fatigue (100,000 cycles) and burst tests were executed on different pipeline sections containing girth welds. Long-term operated and replaced gas transporting pipeline sections, furthermore, both appropriate and inadequate girth welds were investigated. The testing results and the damage histories were compared with each other; safety factor (SF) was defined and calculated for the assessment of the reliability of the girth welds.

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Section: Introductionmentioning

confidence: 99%

Fatigue and burst tests of full-scale girth welded pipeline sections for safe operations

et al. 2023

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The Analysis of Low Temperature Toughness on X80 Pipeline Steel Welded Joint

Wang

et al. 2018

Trans Indian Inst Met

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Fracture assessment of pipeline girth weld at low temperature

Khajedezfouli

Choupani

Torun

et al. 2020

J Braz. Soc. Mech. Sci. Eng.

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The results of long-distance oil and gas pipeline failure analysis are important to the industry in order to maintain the reliability and safety of them. Seam welding in these pipes is done with good accuracy at place of work, while girth welding is carried out in the installation site and usually causes the main failure problem. Therefore, the most vulnerable and crucial part of these pipes is the girth welding. Investigating the fracture behavior of girth weld in high-pressure gas pipeline systems at low temperatures is important because these products are hazardous and may lead to explosion, leading to economic losses and environmental pollution. In the present study, the fracture behavior of girth-welded API 5L X65 natural gas transportation pipes was experimentally investigated at low temperatures. The fracture parameters were obtained using Arcan fixture in which all of the in-plane modes including pure tensile mode to pure shear mode can be created by altering the loading angle from 0° to 90°. Finite element analysis was also conducted by ABAQUS finite element software in order to determine geometrical coefficients which are required in calculating the fracture toughness. Results revealed that by decreasing the temperature and increasing the mode II loading contribution, the fracture toughness values were also decreased.

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Tensile and Toughness Properties of Pipeline Girth Welds

Cited by 4 publications

References 7 publications

Fatigue and burst tests of full-scale girth welded pipeline sections for safe operations

Fatigue and burst tests of full-scale girth welded pipeline sections for safe operations

The Analysis of Low Temperature Toughness on X80 Pipeline Steel Welded Joint

Fracture assessment of pipeline girth weld at low temperature

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