Design of impressed current cathodic protection for steel immersed in freshwater

Impressed current cathodic protection (ICCP) and coating give the optimum protection against corrosion for steel immersed in freshwater. This project presents the results of a study on the effectiveness of coating, impressed current cathodic protection and different environment conditions in prevent...

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Main Author:	Ahdash, Abdelsalam I. S.
Format:	Thesis
Language:	English
Published:	2010
Subjects:	TJ Mechanical engineering and machinery
Online Access:	http://eprints.utm.my/id/eprint/10606/4/AbdelsalamIsAhdashMFKM2010.pdf
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id	my-utm-ep.10606
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spelling	my-utm-ep.106062018-05-30T02:32:35Z Design of impressed current cathodic protection for steel immersed in freshwater 2010-04 Ahdash, Abdelsalam I. S. TJ Mechanical engineering and machinery Impressed current cathodic protection (ICCP) and coating give the optimum protection against corrosion for steel immersed in freshwater. This project presents the results of a study on the effectiveness of coating, impressed current cathodic protection and different environment conditions in preventing corrosion of steel. Experimental tests were carried out on coated and bare steel plates with ICCP and without ICCP by immersing in stagnant and flowing freshwater for one month. The results demonstrated that for coated and bare steel with ICCP and different variable resistance, the values of the potential are sufficient to protect the bare and the coated steel -840mV to -875mV.For coated steel without ICCP immersed in stagnant freshwater the potential has changed from -702 mV to -630mV, but for the bare sample the change in potential was about -10mV this may be due to oxide layer formed on the metal surface. For coated steel without ICCP immersed in flowing freshwater the drop in potential was about -50mV and the bare steel with the same condition was about -100 mV. A good agreement was observed for corrosion rate between weight loss measurement (4.29 mpy) test and electrochemical test (4.27 mpy) for bare steel in stagnant freshwater. The location of the reference electrode has significant implications for the control the potential change of ICCP system, the corrosion potential increases at the top of the sample (60cm below the water) and decrease when the sample was immersed further down to 1 meter in the water level. 2010-04 Thesis http://eprints.utm.my/id/eprint/10606/ http://eprints.utm.my/id/eprint/10606/4/AbdelsalamIsAhdashMFKM2010.pdf application/pdf en public masters Universiti Teknologi Malaysia, Faculty of Mechanical Engineering Faculty of Mechanical Engineering 1. R. Winston River and Herbert H Uhlig, Corrosion and Corrosion Control; an Introduction to Corrosion Science and Engineering, 4th edition (2008). 2. Mars G Fontana, Corrosion Engineering, 3rd edition (1987). 3. www.wikipedia .com ~corrosion. 4. U.S. Army Corps Of Engineers, Naval Facilities Engineering Command, Air Force Civil Engineer Support Agency, UFC3-570-02A (2005). 5. Pierre R. Roberge, Handbook of Corrosion Engineering (2000). 6. Jin-Seok Oh* & Jong-Do Kim. KSME International Journal Vol, 18 No, 4. A new protection strategy of impressed current cathodic protection in ship (2004). 7. PETRONAS Technical Standard, Design & Engineering Practice (CORE), Manual Cathodic Protection, PTS 30.10.73.10. 8. Zaki Ahmad. Principles of Corrosion Engineering and Corrosion Control, 1st edition (2006). 9. Dr. Sami Abulnoun Ajeel, Ghalib A. Ali. Variable Conditions Effect On Polarization Parameters Of Impressed Current Cathodic Protection Of Low Carbon Steel Pipes (2007). 10. Sanja Martinez, Lidija Valek Z ulj, Frankica Kapor. Corrosion Science 51. Disbonding of underwater-cured epoxy coating caused by cathodic protection current (2009). 11. Dae-Kyeong Kim, Srinivasan Muralidharan, Tae-Hyun Haa, Jeong-Hyo Baea,Yoon-Cheol Haa, Hyun-Goo Lee , J.D. Scantlebury. Electrochimica Acta 51. Electrochemical studies on the alternating current corrosion of mild steel under cathodic protection condition in marine environments (2006). 12. C.F. Dong, A.Q. Fua, X.G. Li , Y.F. Cheng. Electrochimica Acta 54. Localized EIS characterization of corrosion of steel at coating defect under cathodic protection (2008). 13. API Recommended practice 575, "Cathodic Protection of underwater structure, American Petroleum Institute, Second Edition (1997). 14. ASTM G5 – 94 Standard Reference Test Method for Making Potentiostatic and Potentiodynamic Anodic Polarization Measurements (2004). 15. ASTM Standard: G31-72, Standard practice for laboratory Immersion Corrosion Test of metal (2004).
institution	Universiti Teknologi Malaysia
collection	UTM Institutional Repository
language	English
topic	TJ Mechanical engineering and machinery
spellingShingle	TJ Mechanical engineering and machinery Ahdash, Abdelsalam I. S. Design of impressed current cathodic protection for steel immersed in freshwater
description	Impressed current cathodic protection (ICCP) and coating give the optimum protection against corrosion for steel immersed in freshwater. This project presents the results of a study on the effectiveness of coating, impressed current cathodic protection and different environment conditions in preventing corrosion of steel. Experimental tests were carried out on coated and bare steel plates with ICCP and without ICCP by immersing in stagnant and flowing freshwater for one month. The results demonstrated that for coated and bare steel with ICCP and different variable resistance, the values of the potential are sufficient to protect the bare and the coated steel -840mV to -875mV.For coated steel without ICCP immersed in stagnant freshwater the potential has changed from -702 mV to -630mV, but for the bare sample the change in potential was about -10mV this may be due to oxide layer formed on the metal surface. For coated steel without ICCP immersed in flowing freshwater the drop in potential was about -50mV and the bare steel with the same condition was about -100 mV. A good agreement was observed for corrosion rate between weight loss measurement (4.29 mpy) test and electrochemical test (4.27 mpy) for bare steel in stagnant freshwater. The location of the reference electrode has significant implications for the control the potential change of ICCP system, the corrosion potential increases at the top of the sample (60cm below the water) and decrease when the sample was immersed further down to 1 meter in the water level.
format	Thesis
qualification_level	Master's degree
author	Ahdash, Abdelsalam I. S.
author_facet	Ahdash, Abdelsalam I. S.
author_sort	Ahdash, Abdelsalam I. S.
title	Design of impressed current cathodic protection for steel immersed in freshwater
title_short	Design of impressed current cathodic protection for steel immersed in freshwater
title_full	Design of impressed current cathodic protection for steel immersed in freshwater
title_fullStr	Design of impressed current cathodic protection for steel immersed in freshwater
title_full_unstemmed	Design of impressed current cathodic protection for steel immersed in freshwater
title_sort	design of impressed current cathodic protection for steel immersed in freshwater
granting_institution	Universiti Teknologi Malaysia, Faculty of Mechanical Engineering
granting_department	Faculty of Mechanical Engineering
publishDate	2010
url	http://eprints.utm.my/id/eprint/10606/4/AbdelsalamIsAhdashMFKM2010.pdf
_version_	1747814796183470080

Design of impressed current cathodic protection for steel immersed in freshwater

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