Applicability evaluation technology for steel small diameter pipes containing external surface corrosion defects

• Published in: Scientific reports Vol. 14; no. 1; pp. 25803 - 13
• Main Authors: Li, Qiang, Zhang, Laibin, Wang, Junqiang, Liang, Qiang, Wei, Donghong, Liu, Xinling, Wang, Tao
• Format: Journal Article
• Language: English
• Published: London Nature Publishing Group UK 28-10-2024; Nature Publishing Group; Nature Portfolio
• Subjects: 639/4077/4073; 639/4077/4082; 639/4077/4107; Applicability evaluation; Corrosion; Defects; Finite element analysis; Finite element method; Humanities and Social Sciences; Liquefied natural gas; Mathematical models; multidisciplinary; Oil; Oil and gas station; Petrochemicals; Pipelines; Pipes; Science; Science (multidisciplinary); Service stations; Simulation; Small diameter pipes; Steel; Strain gauges; Stress concentration; Small diameter pipes; Corrosion; Oil and gas station; Applicability evaluation
• ISSN: 2045-2322; 2045-2322
• DOI: 10.1038/s41598-024-77098-y

With the continuous operation of oil and gas stations and petrochemical equipment, it has been found that steel small bore pipelines have different degrees of corrosion defects, which have led to pipeline cracking and medium leakage, and have increasingly attracted great attention of their oil and gas and chemical enterprises. In order to ensure the safe operation of the small diameter pipes with external surface corrosion defects, the influence law of the size of corrosion defects on the bearing capacity of the small diameter pipes were studied by finite element analysis and test simulation method, and the damage mechanism and failure form were analyzed, and the failure pressure prediction formula of the small diameter pipes with defects was fitted. It provides technical guidance for the applicability evaluation of corrosion-containing steel small diameter pipes in oil and gas chemical stations or installations.