Investigation of failure mechanisms and remaining life prediction of firewater pipelines used in industrial applications

Piri, Benyamin; Amini, Rasool; Asadinia, Erfan; Vardak, Shirin; Mehdilouee, Reza; Mojarrad, Azim

doi:10.1016/j.engfailanal.2021.105301

Cited by 11 publications

(2 citation statements)

References 27 publications

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“…It is also reasonable to assume that sulphides and magnetite, as electronic conductors present in the CPC shell contribute significantly to the later abiotic corrosion cell operation. [ 52,53 ]…”

Section: Resultsmentioning

confidence: 99%

A comparative analysis of perforation and blister features on internally corroded aged water pipeline wall

Martinez

Ilhan-Sungur

Cansever

et al. 2022

Materials & Corrosion

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Despite well-controlled chlorination, no known operational outages and physicochemical parameters of the water indicating a slight tendency to form carbonate deposits, aged and internally uncoated pipelines may experience unexpected internal corrosion events that raise integrity concerns. A typical corrosion damage was investigated consisting of a single perforation covered by a corrosion product cap (CPC) approximately 5 cm in diameter and surrounded by a relatively dense population of blisters of approx. 1 cm in diameter covering shallow corrosion pits. It was observed on the inner wall of an aged on-land water distribution pipeline after decades of corrosion-free operation. A dense population of bacteria, sulphides and extracellular polysaccharide substances were detected in the CPC, but none at the pit bottom surrounding the perforation and within the blisters, but abundant fungi were observed on scanning electron microscopy images of the blister bottom. The morphology of the blisters suggests that the blister formation is due to the loss of adhesion of the corrosion product layer, which is influenced by the formation of spherulitic crystals. The Fourier transform infra-red spectroscopy results suggest that the growth of these carbonate crystals is related to the adsorption of microbially generated carbonyl groups. The results support a likely scenario of the effect of biomineralization on the appearance of corrosion through the formation of blisters, which may provide a niche for microbes that eventually cause corrosion damage.biomineral (CaCO 3 ), extracellular polysaccharide substances (EPS), microbiologically induced corrosion (MIC), water distribution system | INTRODUCTIONCorrosion is one of the main problems encountered in the water utility industry and metallic piping systems. It poses the most common threat to the performance and life span of the pipeline system also causes a substantial threat to human life and safety. Internal corrosion of a metallic water pipeline is a function of the physicochemical and biological parameters of the water in contact with the pipeline walls. In terms of potable water pipelines, dissolved oxygen, pH, temperature, alkalinity, buffer intensity, the impurities, rate of the water flow, water stagnation time and microbial activity have noticeable effects on corrosion of the internal side of steel

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Section: Resultsmentioning

confidence: 99%

A comparative analysis of perforation and blister features on internally corroded aged water pipeline wall

Martinez

Ilhan-Sungur

Cansever

et al. 2022

Materials & Corrosion

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“…Early detection of these defects could help avoid accidents in a pipeline [3,4]. These defects can be measured using non-destructive testing (NDT) techniques, such as ultrasonic testing, Eddy current testing, X-ray inspection, liquid penetrant test, thermography, and magnetic flux leakage testing [5][6][7][8][9]. For instance, ultrasonic testing can detect small flaws in pipes using ultrasonic pulses.…”

Section: Introductionmentioning

confidence: 99%

Measurements of the Magnetic Field Variations Related with the Size of V-Shaped Notches in Steel Pipes

et al. 2021

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Gas and oil pipeline networks require periodic inspections to detect cracks or notches that can cause industrial accidents and environmental contamination. For these inspections, the metal magnetic memory (MMM) method could be used as a non-destructive testing (NDT) technique, which does not need expensive equipment and high-skilled operators. However, more investigations are required to quantify the size and shape of defects in ferromagnetic pipes using the MMM signals. We present experimental measurements of MMM signals around five small V-shaped notches of an ASTM-A36 steel pipe using a three-axis magnetoresistive sensor. The V-shaped notches have different values of depth (500 µm, 1000 µm, 1500 µm, 2000 µm and 2500 µm) and width (1000 µm, 1500 µm, 2000 µm, 3000 µm and 3500 µm). We measured the variations of tangential and normal MMM signals around these defects and their relationships with the size of each defect. The first V-notch defect (500 μm depth and 1000 μm width) registers variations of the tangential and normal MMM signals of 14.32 μT ± 1.62 μT and 27.95 μT ± 1.14 μT, respectively. On the other hand, the fifth V-notch defect (2500 μm depth and 3500 μm width) has variations of the tangential and normal MMM signals of 68.75 μT ± 1.10 μT and 71.37 μT ± 0.72 μT, respectively. The MMM method could be used for real-time monitoring of V-shaped notches in steel pipes. This method does not require special treatment of steel pipes.

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Corrosion-Fatigue Life of 35 Steel in Tap Water Under Additional Cavitation Loading

2022

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Investigation of failure mechanisms and remaining life prediction of firewater pipelines used in industrial applications

Cited by 11 publications

References 27 publications

A comparative analysis of perforation and blister features on internally corroded aged water pipeline wall

A comparative analysis of perforation and blister features on internally corroded aged water pipeline wall

Measurements of the Magnetic Field Variations Related with the Size of V-Shaped Notches in Steel Pipes

Corrosion-Fatigue Life of 35 Steel in Tap Water Under Additional Cavitation Loading

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