Corrosion is the key factor responsible for the degradation of ship structures and in no place is this truer than water ballast tanks. Coating protection system is a continual research interest for classification societies and coating industries. Up to now, most coating performance analyses are qualitative not quantitative. Coating life prediction is almost always based on experience and various assumptions, due to unavailability of practical data support systems. This paper describes a preliminary impartial investigation of coating life carried out with interviewees from the Australian Defence Science and Technology Organization (DSTO), shipyards, coating supplier and an independent expert. Plate surface, edges and welds in ballast tank were considered and the influences of dry film thickness (DFT) and surface preparation (SP) are addressed. The investigation gives some insight into the life of practical coating systems for water ballast tanks. Coating life is proposed to be representable by a normal distribution when corrosion breakdown is below 10% of plate thickness, which is of practical implication.
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ASME 2005 24th International Conference on Offshore Mechanics and Arctic Engineering
June 12–17, 2005
Halkidiki, Greece
Conference Sponsors:
- Ocean, Offshore and Arctic Engineering Division
ISBN:
0-7918-4195-2
PROCEEDINGS PAPER
Coating Life Prediction for Water Ballast Tank Available to Purchase
R. E. Melchers,
R. E. Melchers
University of Newcastle, Newcastle, NSW, Australia
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X. L. Jiang,
X. L. Jiang
Wuhan University of Technology, Wuhan, P. R. China
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K. J. Lu
K. J. Lu
Wuhan Transportation Committee, Wuhan, P. R. China
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R. E. Melchers
University of Newcastle, Newcastle, NSW, Australia
X. L. Jiang
Wuhan University of Technology, Wuhan, P. R. China
K. J. Lu
Wuhan Transportation Committee, Wuhan, P. R. China
Paper No:
OMAE2005-67425, pp. 869-873; 5 pages
Published Online:
November 11, 2008
Citation
Melchers, RE, Jiang, XL, & Lu, KJ. "Coating Life Prediction for Water Ballast Tank." Proceedings of the ASME 2005 24th International Conference on Offshore Mechanics and Arctic Engineering. 24th International Conference on Offshore Mechanics and Arctic Engineering: Volume 1, Parts A and B. Halkidiki, Greece. June 12–17, 2005. pp. 869-873. ASME. https://doi.org/10.1115/OMAE2005-67425
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