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International Journal of Scientific and Engineering Research
ISSN Online 2229-5518
ISSN Print: 2229-5518 10    
Website: http://www.ijser.org
scirp IJSER >> Volume 2, Issue 10, October 2011 Edition
Offshore Steel Structures Corrosion Damage Model
Full Text(PDF, 3000)  PP.  
Author(s)
Omotoso Matthew Folorunso, Salau M. A, Esezobor D. E
KEYWORDS
Chloride Accumulation, Chlorine-ion Concentration, Chloride Diffusion, Coating Life Span, Corrosion Damage, Crude Oil Production, Offshore Platform Structures
ABSTRACT
This paper reviews the current state-of-the-art modeling for marine steel structures chloride-induced corrosion. To investigate the effect of ocean wave on chloride accumulation in the neighborhood of offshore crude oil production platform. The model demonstrates that the period required for the steel structures built in marine environment to experience corrosion losses depends on chlorine ion diffusion rate, accumulation rate and time for corrosion to occur and generate enough rusting to fall off from the steel component surface. The work revealed that chlorine ion concentration in surrounding of offshore platform was higher than the open seawater due to crude oil production activities. The work provides estimation method for chloride accumulation rate in the neighbourhood of offshore production platform based on chlorine ion concentration, wave velocity and the age of platform.
References
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[2] Pierre R, Roberge Distance Learning Corrosion Course, CCE281, Impact Principle and Practical Solution 1999.

[3] Bentz, E. C., “Probabilistic Modeling of Service Life for Structures Subjected to Chlorides,” ACI Materials Journal. 2003.

[4] Manual on Service Life of Corrosion-Damaged Reinforced Concrete Bridge Superstructure Elements Transportation Research Board 2006 Executive Committee

[5] Liu, Y., Modeling the Time-to-Corrosion Cracking of the Cover Concrete in Chloride Contaminated Reinforced Concrete Structures. 1996, Virginia Polytechnic Institute and State University

[6] Eastern Nigeria Shallow Water Metocean Criteria: Version 1.2, April 2002.

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