The effect of seawater on the corrosion behavior of natural gas pipelines in Malaysia

Seawater is inherently chemically aggressive, complex fluid that affects nearly all structural materials to some extent. Corrosion in the seawater is dependent on a number of factors such as material composition, water chemistry, pH, biofouling, microbiological organisms, pollution and contamina...

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Main Author: Suziee, Sukarti
Format: Thesis
Language:English
English
Published: 2013
Subjects:
Online Access:http://eprints.utem.edu.my/id/eprint/14968/1/The%20effect%20of%20seawater%20on%20the%20corrosion%20behavior%20of%20natural%20gas%20pipelines%20in%20Malaysia.pdf
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spelling my-utem-ep.149682022-11-10T15:22:41Z The effect of seawater on the corrosion behavior of natural gas pipelines in Malaysia 2013 Suziee, Sukarti T Technology (General) TJ Mechanical engineering and machinery Seawater is inherently chemically aggressive, complex fluid that affects nearly all structural materials to some extent. Corrosion in the seawater is dependent on a number of factors such as material composition, water chemistry, pH, biofouling, microbiological organisms, pollution and contamination and temperature. Understanding how these factors may affect corrosion in seawater can support the design of materials, components, and systems for optimal service performance and structural life. A study was taken to investigate the effect of different seawater surrounding Peninsular Malaysia on the carbon steel having app1ication as petroleum/natural gas pipeline. The Tafel Extrapolation technique has been applied to evaluate the corrosion rate of the carbon steel and different locations of natural seawater have been used as the electrolyte solution. In this experiment, Carbon steel API SL X42 were utilized and the seawater is taken from the South China Sea and Strait of Malacca. Beside the corrosion rate calculating the type of corrosion attack has also been discussed on the basis of the morphology and the content properties of seawater are determined. It is found that the corrosion rate of the carbon steel specimen is significantly nobler· in-the-Strait of Malacca Sea than that in the south China Sea. The results varied from 0.01 to 0.025 mm/year. Immersion test of two hours and ten days were carried out to determine the corrosion product that formed at the surface of pipe. Localized corrosion (pitting) and uniform corrosion attacked the surface specimen severely for each sea. The lower corrosion rate is achieved with higher contents of sodium chloride and salinity. Some of the dissolved material such as Iron oxide also distributes to the formation 0f corrosion. Generally from the result, South China Sea is more favorable in the applicationof this material even though the material is acceptable in both seas. 2013 Thesis http://eprints.utem.edu.my/id/eprint/14968/ http://eprints.utem.edu.my/id/eprint/14968/1/The%20effect%20of%20seawater%20on%20the%20corrosion%20behavior%20of%20natural%20gas%20pipelines%20in%20Malaysia.pdf text en public http://eprints.utem.edu.my/id/eprint/14968/2/The%20effect%20of%20seawater%20on%20the%20corrosion%20behavior%20of%20natural%20gas%20pipelines%20in%20Malaysia.pdf text en validuser http://library.utem.edu.my:8000/elmu/index.jsp?module=webopac-d&action=fullDisplayRetriever.jsp&szMaterialNo=0000085438 mphil masters Universiti Teknikal Malaysia Melaka Faculty of Manufacturing Engineering Mohd Abid, Mohd Asyadi 'Azam
institution Universiti Teknikal Malaysia Melaka
collection UTeM Repository
language English
English
advisor Mohd Abid, Mohd Asyadi 'Azam
topic T Technology (General)
TJ Mechanical engineering and machinery
spellingShingle T Technology (General)
TJ Mechanical engineering and machinery
Suziee, Sukarti
The effect of seawater on the corrosion behavior of natural gas pipelines in Malaysia
description Seawater is inherently chemically aggressive, complex fluid that affects nearly all structural materials to some extent. Corrosion in the seawater is dependent on a number of factors such as material composition, water chemistry, pH, biofouling, microbiological organisms, pollution and contamination and temperature. Understanding how these factors may affect corrosion in seawater can support the design of materials, components, and systems for optimal service performance and structural life. A study was taken to investigate the effect of different seawater surrounding Peninsular Malaysia on the carbon steel having app1ication as petroleum/natural gas pipeline. The Tafel Extrapolation technique has been applied to evaluate the corrosion rate of the carbon steel and different locations of natural seawater have been used as the electrolyte solution. In this experiment, Carbon steel API SL X42 were utilized and the seawater is taken from the South China Sea and Strait of Malacca. Beside the corrosion rate calculating the type of corrosion attack has also been discussed on the basis of the morphology and the content properties of seawater are determined. It is found that the corrosion rate of the carbon steel specimen is significantly nobler· in-the-Strait of Malacca Sea than that in the south China Sea. The results varied from 0.01 to 0.025 mm/year. Immersion test of two hours and ten days were carried out to determine the corrosion product that formed at the surface of pipe. Localized corrosion (pitting) and uniform corrosion attacked the surface specimen severely for each sea. The lower corrosion rate is achieved with higher contents of sodium chloride and salinity. Some of the dissolved material such as Iron oxide also distributes to the formation 0f corrosion. Generally from the result, South China Sea is more favorable in the applicationof this material even though the material is acceptable in both seas.
format Thesis
qualification_name Master of Philosophy (M.Phil.)
qualification_level Master's degree
author Suziee, Sukarti
author_facet Suziee, Sukarti
author_sort Suziee, Sukarti
title The effect of seawater on the corrosion behavior of natural gas pipelines in Malaysia
title_short The effect of seawater on the corrosion behavior of natural gas pipelines in Malaysia
title_full The effect of seawater on the corrosion behavior of natural gas pipelines in Malaysia
title_fullStr The effect of seawater on the corrosion behavior of natural gas pipelines in Malaysia
title_full_unstemmed The effect of seawater on the corrosion behavior of natural gas pipelines in Malaysia
title_sort effect of seawater on the corrosion behavior of natural gas pipelines in malaysia
granting_institution Universiti Teknikal Malaysia Melaka
granting_department Faculty of Manufacturing Engineering
publishDate 2013
url http://eprints.utem.edu.my/id/eprint/14968/1/The%20effect%20of%20seawater%20on%20the%20corrosion%20behavior%20of%20natural%20gas%20pipelines%20in%20Malaysia.pdf
http://eprints.utem.edu.my/id/eprint/14968/2/The%20effect%20of%20seawater%20on%20the%20corrosion%20behavior%20of%20natural%20gas%20pipelines%20in%20Malaysia.pdf
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