Influence of Soil Corrosion and Transported Products on the Service Life of Welded Joints of Oil and Gas Pipelines

Andreikiv, O. É.; Hembara, О. V.

doi:10.1007/s11003-013-9598-y

Cited by 3 publications

(1 citation statement)

References 4 publications

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“…With the increase of burial depth, the soil becomes more and more humid and compact, making it difficult for oxygen to pass through, so the oxygen concentration decreases obviously [10]. Thus, owing to great difference in oxygen concentration, the part of guyed rod buried in the soil is corroded under the action of oxygen concentration battery [11,12], and the specific corrosion process would be carried out according to the above reaction equation. For the guyed rod, the part contacting with the soil of higher oxygen content is considered as cathode of macro corrosion battery, while the part buried deeper is regarded as cathode due to lower oxygen concentration and suffers from serious corrosion.…”

Section: Analysis and Discussionmentioning

confidence: 99%

Analysis on Corrosion Fracture of Guyed Rod of Cable Stayed Iron Tower in 110 kV Transmission Line

et al. 2020

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The guyed rod is of great importance for supporting tower and resisting wind pressure, and its reliability is an effective guarantee for safe and stable operation of power grid. In this paper, the fractured guyed rod used for cable stayed iron tower in a 110kV transmission line was investigated by means of macro-morphology inspection, chemical composition analysis, microstructure analysis, scanning electron microscope, mechanical properties test, soil physicochemical properties inspection and energy spectrum analysis. The result showed that electrode potentials difference existed between different parts on the surface of the guyed rod caused by the uneven distribution of oxygen concentration was the major reason for electrochemical corrosion. Under the action of oxygen concentration cell, the effective cross-sectional area of the guyed rod decreased below the critical value, leading to the final fracture of the guyed rod.

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Section: Analysis and Discussionmentioning

confidence: 99%

Analysis on Corrosion Fracture of Guyed Rod of Cable Stayed Iron Tower in 110 kV Transmission Line

et al. 2020

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Prediction of Residual Service Life of Oil Pipeline Under Non-stationary Oil Flow Taking into Account Steel Degradation

Andreykiv

Hembara

Dolins’ka

et al. 2020

Lecture Notes in Civil Engineering

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Analysis on corrosion of flat steel used in grounding grid for 220 kV substation

Chen

Fang

Han

et al. 2020

IOP Conf. Ser.: Mater. Sci. Eng.

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Grounding grid plays an important role in protection of main device for power system. With the increase of power capacity and voltage level, the safety of grounding grid is particularly important. In this paper, the seriously corroded flat steel of grounding grid in 220kV substation was investigated by means of different test methods. The result showed that electrode potentials difference existed between different locations on the surface of the buried grounding electrode was the major reason to cause electrochemical corrosion. Meanwhile, higher sulphur and chlorine content of the soil around the substation caused by long-term industrial pollution, led to rapid depletion of zinc coating and acceleration of corrosion process of grounding material. Additionally, effective suggestions were presented in order to reduce the grounding resistance and improve the anti-corrosion performance.

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Influence of Soil Corrosion and Transported Products on the Service Life of Welded Joints of Oil and Gas Pipelines

Cited by 3 publications

References 4 publications

Analysis on Corrosion Fracture of Guyed Rod of Cable Stayed Iron Tower in 110 kV Transmission Line

Analysis on Corrosion Fracture of Guyed Rod of Cable Stayed Iron Tower in 110 kV Transmission Line

Prediction of Residual Service Life of Oil Pipeline Under Non-stationary Oil Flow Taking into Account Steel Degradation

Analysis on corrosion of flat steel used in grounding grid for 220 kV substation

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