In situ measurement of pipeline coating integrity and corrosion resistance losses under simulated mechanical strains and cathodic protection

Ranade, Shyama Deepak; Forsyth, Maria; Tan, Yongjun

doi:10.1016/j.porgcoat.2016.08.007

Cited by 25 publications

(6 citation statements)

References 21 publications

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“…This is because more electrochemically reactive spots were generated. In all test cases, the measured current is always negative, implying that the CP current can flow through the coating along electrolyte pathways to reach the metal substrate and protect the steel from corrosion [25]. Figure 11b presents the variations of currents on the samples with damaged enamel coating.…”

Section: Visual Observations After Corrosion Testsmentioning

confidence: 98%

Corrosion Resistance of Pipeline Steel with Damaged Enamel Coating and Cathodic Protection

Fan

Reis²,

Chen

et al. 2018

Coatings

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This paper presents the first report on the corrosion resistance of pipeline steel with damaged enamel coating and cathodic protection in 3.5 wt % NaCl solution. In particular, dual cells are set up to separate the solution in contact with the damaged and intact enamel coating areas, to produce a local corrosion resistance measurement for the first time. Enamel-coated steel samples, with two levels of cathodic protection, are tested to investigate their impedance by electrochemical impedance spectroscopy (EIS) and their cathodic current demand by a potentiostatic test. Due to its glass transition temperature, the enamel-coated pipeline can be operated on at temperatures up to 400 • C. The electrochemical tests show that cathodic protection (CP) can decelerate the degradation process of intact coating and delay the electrochemical reactions at the enamel-steel interface. However, CP has little effect on the performance of coating once damaged and can prevent the exposed steel from corrosion around the damaged site, as verified by visual inspections. Scanning electron microscopy (SEM) indicated no delamination at the damaged enamel-steel interface due to their chemical bond.

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Section: Visual Observations After Corrosion Testsmentioning

confidence: 98%

Corrosion Resistance of Pipeline Steel with Damaged Enamel Coating and Cathodic Protection

Fan

Reis²,

Chen

et al. 2018

Coatings

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“…In oil and gas pipeline, the presence of carbon dioxide (CO2) and hydrogen sulfide (H2S) can cause severe internal corrosion [6][7][8][9]. Cathodic protection is one of the techniques that can mitigate the corrosion [10].…”

Section: Corrosionmentioning

confidence: 99%

Ultrasonic signal processing techniques for Pipeline: A review

et al. 2019

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Monitoring pipeline wall is an important issue in oil and gas industries. Over time, the defect can occur in the pipeline and can impact surrounding population, environment and may result in injuries or fatalities. While flaws in the pipeline could be detected by ultrasonic testing and monitoring the severity of the flaw. The limitation of ultrasonic testing is the signal contaminate with backscattering noise, which masks flaw echoes in the measured signal. Signal processing take place in the recent year to de-noising for improving signal-to-noise ratio and extract the feature for flaws classification. This paper presents a comprehensive overview of signal processing techniques used to improve ultrasonic detection method with and without intelligent classifier. Finally, the advantages and disadvantages feature extraction provided for classifications process.

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“…The liquid flow and the harsh soil environment erosion on the pipe wall cause economic losses, catastrophic accidents, and environmental pollution. [2][3][4] Over the last decades, investigations have been conducted extensively on the corrosion and wear resistance of pipeline transport steel, [5][6][7][8][9] indicating that coating is an efficient way to protect the pipeline from wear and corrosion. Organic coatings, including phenolic epoxy resin, powder epoxy resin, polyethylene, polyurethane, polyamide, 10,11 were widely used on pipeline protection combined with cathode protection.…”

Section: Introductionmentioning

confidence: 99%

Enamel coatings mill additives optimization for sulfuric acid corrosion

Li,

Hong,

et al. 2023

Int J Applied Ceramic Tech

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Different mill additives were optimized to improve enamel coatings anti sulfuric corrosion, the immersive corrosion behaviors in 30 wt. % H2SO4 solution for 120 days of the above enamel coatings were investigated by XRD, SEM‐EDS, LSCM, Raman spectra, OCP, and EIS techniques. Results showed that the enamel coating with 12 wt. % quartz mill additives presents the best corrosion resistance. The mill additives significantly reduced the porosity, increased the silicon‐oxygen network density, enhanced the gel passivation layer formation ability of enamel coatings, increased the alkaline oxide content, and prevented the ion exchange within the sulfuric acid solution.This article is protected by copyright. All rights reserved

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In situ measurement of pipeline coating integrity and corrosion resistance losses under simulated mechanical strains and cathodic protection

Cited by 25 publications

References 21 publications

Corrosion Resistance of Pipeline Steel with Damaged Enamel Coating and Cathodic Protection

Corrosion Resistance of Pipeline Steel with Damaged Enamel Coating and Cathodic Protection

Ultrasonic signal processing techniques for Pipeline: A review

Enamel coatings mill additives optimization for sulfuric acid corrosion

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