Failure analysis of a gas mine outfall pipeline in Sichuan

Pengcheng Li; Dong Lin; Jian Gao; Chang Liu; Mingnan Sun; Haochen Wu

doi:10.1117/12.2674003

9 March 2023 Failure analysis of a gas mine outfall pipeline in Sichuan

Pengcheng Li, Dong Lin, Jian Gao, Chang Liu, Mingnan Sun, Haochen Wu

Proceedings Volume 12600, International Conference on Optoelectronic Materials and Devices (ICOMD 2022); 126001J (2023) https://doi.org/10.1117/12.2674003
Event: 2022 International Conference on Optoelectronic Materials and Devices, 2022, Chongqing, China

Abstract

A failure occurred during the service period of the gas mine outfall pipeline in Sichuan Province, and a perforation was realized in the pipe section at 9 o'clock and multiple corrosion pits at 12 o'clock. In order to find out the cause of the failure, a hardness test was performed on the pipe sample to determine the mechanical properties of the pipe, and a metallographic analysis was performed on the pipe to determine the pipe tissue properties. The tube sample was scanned by electron microscope and analyzed by energy spectrum, and it was found that the cause of perforation and multiple corrosion pits in the tube sample was due to the corrosion of CO₂.

Citation Download Citation

Pengcheng Li, Dong Lin, Jian Gao, Chang Liu, Mingnan Sun, and Haochen Wu "Failure analysis of a gas mine outfall pipeline in Sichuan", Proc. SPIE 12600, International Conference on Optoelectronic Materials and Devices (ICOMD 2022), 126001J (9 March 2023); https://doi.org/10.1117/12.2674003

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