Studies on ablation failure on pipeline related to lightning strikes

Li, Qiang; Liu, Xinling; Wang, Liangjun; Wang, Hongxin; Jiang, Zi‐Tao; Chen, Shaosong; Lu, Chunlei

doi:10.1016/j.engfailanal.2020.104499

Cited by 6 publications

(2 citation statements)

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“…The pipeline ablation accidents reported in the literature are generally caused by lightning strikes (Venturino, 2016; Pikas and Shoaf, 2010; Quickel and Beavers, 2011), and numerous studies have investigated the law of lightning strike-induced ablation (Metwally et al , 2004; Paisios et al , 2008; Liu et al , 2017; Chemartin et al , 2012). Studies have examined ablation pits on-site and those that were simulated in a laboratory, and they have revealed that ablation induces a considerable change in the microstructure and hardness of pit areas, which has a substantial effect on the mechanical properties of a pipeline (Li et al , 2020). However, few studies have explored the ablation behavior of pipelines under HVDC interference and the post-ablation corrosion resistance of pipeline steel.…”

Section: Introductionmentioning

confidence: 99%

“…Studies have examined ablation pits on-site and those that were simulated in a laboratory, and they have revealed that ablation induces a considerable change in the microstructure and hardness of pit areas, which has a substantial effect on the mechanical properties of a pipeline (Li et al, 2020). However, few studies have explored the ablation behavior of pipelines under HVDC interference and the post-ablation corrosion resistance of pipeline steel.…”

Section: Introductionmentioning

confidence: 99%

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Effect of electric-arc-induced ablation on corrosion behavior of pipeline steel under high-voltage direct current interference

Wang

Cao²,

Wang³

et al. 2022

ACMM

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Purpose The purpose of this study is to elucidate the effects of electric-arc-induced ablation on the corrosion behavior of pipeline steel in neutral and high pH environments. Design/methodology/approach Electrochemical testing, an atmospheric-pressure immersion experiment and various techniques (e.g. scanning electron microscopy, energy dispersive X-ray spectroscopy and X-ray photoelectron spectroscopy) were used to examine the effects of electric-arc-induced ablation on the corrosion behavior of pipeline steel in neutral and high pH environment. Findings Electric-arc-induced ablation occurred preferentially in areas of inclusion. The corrosion resistance of an ablation pit was lower than that of non-ablation areas. In the neutral soil solution, general corrosion was the dominant corrosion that affected pipeline steel; the effect of ablation was small but pitting corrosion could still be induced. In a high pH environment, the samples without ablation were passivated, whereas the samples with ablation pits could not be passivated; the ablation pits were likely to develop pitting corrosion. Originality/value Electric-arc-induced ablation can reduce the corrosion resistance of pipeline steel under high-voltage direct current interference.

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