...Liu Siming; Zhang Peng; Liu Wei; Li Hu; Tang Qiao; Yang Qin; Huang Yunfei Pipeline safety faces a prevalent threat in mountainous areas due to landslides. The advent of landslides introduces the risk of pipeline leaks or ruptures, posing a significant threat to the environment, with the potential...

...Youn-Young Jang; Nam-Su Huh; Ik-Joong Kim; Young-Pyo Kim Long-distance pipelines for the transport of oil and natural gas to onshore facilities are mainly fabricated by girth welding, which has been considered as a weak location for cracking. Pipeline rupture due to crack initiation and propagation...

...Ionut Lambrescu; Alin Dinita; Mihail Minescu This paper proposes a new approach in dealing with volumetric surface defects (VSD) in pipelines. Using three-dimensional (3D) scanning and reverse engineering techniques, along with finite element analysis, we studied and evaluated comparatively...

...Youn-Young Jang; Ju-Yeon Kang; Nam-Su Huh; Ik-Joong Kim; Young-Pyo Kim Engineering solutions for crack-tip opening displacement (CTOD) and J-integral estimations for pipelines with a surface crack are proposed based on parametric finite element (FE) analyses for various geometries, material...

... pipelines in-service welding failure mechanism burn-through Aging and corrosion problems seriously impact the safe operation of gas pipelines. The traditional way to repair a corroded or damaged pipeline is to change the defective portion, which causes economic losses and environmental pollution...

...Chunsheng Miao; Jianping Zhao Based on the statistical analysis from a great deal of failure cases, generally, the failure causes of buried pipeline can be classified into four factors, namely, third-party damage, erosion–corrosion damage, design and construction error, and incorrect operation...

...Jinqiu Hu; Laibin Zhang; Wei Liang; Cunjie Guo In petroleum industry, pipeline is singled out as it is the safest and the most economically viable means of transporting large quantities of oil and natural gas. However, accidents to pipelines because of the third-party interference have been...

...Haofeng Chen; Weihang Chen; Tianbai Li; James Ure In this study, the limit load, shakedown, and ratchet limit of a defective pipeline subjected to constant internal pressure and a cyclic thermal gradient are analyzed. Ratchet limit and maximum plastic strain range are solved by employing the new...

...B. H. Wu; Z. F. Sang; Z. L. Wang; G. E. O. Widera The objective of this study is to investigate the strength behavior and plastic limit pressure of hot-tapped pipelines under an internal pressure load. Two full scale test models were fabricated for the experiment. A three-dimensional nonlinear...

...Nikzad Nourpanah; Farid Taheri The reeling technique presents an economical pipeline installation method for offshore oil and gas applications, especially for thick-wall (low D / t ) pipelines. During reeling, the pipe is subjected to large plastic bending strains up to 3%. In thick-wall pipes...

...Mainul Hasan; Faisal Khan; Shawn Kenny Failure probability of oil and gas pipelines due to external corrosion defects can be estimated using corrosion growth model and the evaluation of remaining strength. Codes/standards have been developed for the assessment of the remaining strength of corroded...

...Husain M. Al-Muslim; Abul Fazal M. Arif Mechanical damage in transportation pipelines is a threat to their structural integrity. Failure in oil and gas pipelines is catastrophic as it leads to personal fatalities, injuries, property damage, loss of production, and environmental pollution. Therefore...

...Aiman Al-Showaiter; Farid Taheri; Shawn Kenny The aim of the present study is to develop numerical modeling procedures to simulate and study the effect of girth weld induced residual stresses and geometric imperfections on the behavior of conventional carbon steel oil and gas pipelines. The effect...

...Wenxing Zhou; Maher A. Nessim The optimal design level for onshore natural gas pipelines was explored through a hypothetical example, whereby the pipe wall thickness was assumed to be the sole design parameter. The probability distributions of the life-cycle costs of various candidate designs...

...Tomasz Tkaczyk; Noel P. O’Dowd; Kamran Nikbin The reel-lay method is a cost efficient alternative to the S-lay and J-lay methods for small to medium size steel offshore pipelines. The quality of the pipeline construction is enhanced by on-shore welding and inspection under controlled conditions...

... becomes more complicated when the welded joint with strength heterogeneity is subjected to dynamic rapid loading; for example, the welded heat-affected zone of pipeline steels is softened and welded underground pipelines are affected by a rapid ground sliding in an earthquake. In this paper...

...Bülent A. Kayhan; Zafer Bozkus The aim of the present study is to predict the impact force applied by an individual transient liquid slug on an elbow at the end of a horizontal and initially empty pipeline. The liquid slug is driven by pressurized air in a tank located upstream of the pipeline...

...Husain Al-Muslim; Amro M. Al-Qutub Hydrotest is one of the most important inspection activities to assess the integrity of pipelines prior to starting transportation of hazardous liquids. If the pipeline is buried, and welds cannot be inspected visually for leak, it is required that the hydrotest...

...Fraser King; Russell Given; Robert G. Worthingham; Greg Van Boven Buried pipelines can be subject to transitional environments due to changes in soil type or moisture content. Changes in the height of the water table, for example, will affect not only the availability of water but also the access...

...Arman U. Ahmed; Mehmet Aydin; J. J. Roger Cheng; Joe Zhou Buried pipelines, used by petrochemical industries in North America for transporting oil and derivatives, are often subjected to large deformations resulting from geo-environmental factors and operating conditions, such as geotechnical...