DOI: https://doi.org/10.14710/kapal.v22i1.65061

The Application of Nanocoating and Cold-Dip Galvanization on Mitigating Corrosion for Ship and Offshore Mooring Chains

Charles U Orji  -  Centre of Excellence in Marine and Offshore Engineering, Rivers State University | Department of Marine Engineering, Rivers State University, Nigeria
*Samson Nitonye orcid scopus  -  Centre of Excellence in Marine and Offshore Engineering, Rivers State University | Department of Marine Engineering, Rivers State University, Nigeria
Felix U Asuquo  -  Centre of Excellence in Marine and Offshore Engineering, Rivers State University, Nigeria
Received: 11 Jul 2024; Revised: 14 Mar 2025; Accepted: 22 Apr 2025; Published: 25 Apr 2025.
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Abstract

Corrosion is a major challenge for marine vessels and offshore mooring systems due to the aggressive maritime environment characterized by high salinity, biological activity, and temperature variations. This study explores the effectiveness of nano-coatings derived from waste snail shells compared to traditional cold-dip galvanization in mitigating corrosion on ANSI A36 steel mooring chains. Three specimen groups—nano-epoxy composite coating, cold-dip galvanized, and bare metal—were tested in fresh and saltwater environments over a five-week period. Water composition, pH, and salinity were analyzed using Atomic Absorption Spectroscopy (AAS) to assess their influence on corrosion behavior. Weekly measurements of corrosion rates were taken to evaluate the protective performance of each treatment. The results demonstrated a significant reduction in corrosion rates for both nano-coated and galvanized samples compared to bare metal. Specifically, the nano-epoxy coating reduced corrosion from 0.13 mm/week to below 0.02 mm/week, while cold-dip galvanized samples showed a similar decline, converging around 0.02 mm/week. Bare metal, however, stabilized at approximately 0.05 mm/week. These findings suggest that nano-coatings are a promising, sustainable alternative to conventional galvanization, enhancing the durability and operational lifespan of mooring systems and offshore structures. This advancement supports the offshore industry’s need to meet stringent classification guidelines and extend the design life of critical components. Further long-term exposure studies are recommended to confirm the sustained effectiveness of nano-epoxy coatings in marine environments.

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Keywords: Mooring Chains, Corrosion, Nano coating, Seawater, Failure, Salinity, Cold-Dip Galvanization

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Section: Research Articles
Language : EN
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  1. DNVGL, Position Mooring, Offshore Standards, 2018. [Online]. Available: https://rules.dnv.com/docs/pdf/DNV/os/2018-07/dnvgl-os-e301
  2. S. Nitonye, E. Ofonime, and E. A. Ogbonnaya, "Combating corrosion in transmission pipelines in marine environment using Vernonia Amygdalina as inhibitor," Open Journal of Marine Science, vol. 8, no. 4, pp. 450–472, 2018, https://doi.org/10.4236/ojms.2018.84025
  3. S. Alkan, "Enhancement of marine corrosion and tribocorrosion resistance of offshore mooring chain steel by aluminizing process," Brodogradnja/Shipbuilding, vol. 73, no. 4, pp. 113–159, 2022. https://doi.org/10.21278/brod73407
  4. M. Ghazali et al., "Corrosion of mooring chains in marine environment: A review," Key Engineering Materials, vol. 748, pp. 82–88, 2017
  5. E. N. Lone, T. Sauder, K. Larsen, and B. J. Leira, "Probabilistic fatigue model for design and life extension of mooring chains, including mean load and corrosion effects," Ocean Engineering, vol. 245, no. 10, p. 110396, 2022. https://doi.org/j.oceaneng.2021.110396
  6. O. Adedipe, F. Brennan, and A. Kolios, "Review of corrosion fatigue in offshore structures: Present status and challenges in the offshore wind sector," Renewable and Sustainable Energy Reviews, vol. 61, pp. 141–154, 2016. https://doi.org/10.1016/j.rser.2016.02.017
  7. X. Zhang, N. Noël-Hermes, G. Ferrari, and M. Hoogeland, "Localized corrosion of mooring chain steel in seawater," Corros. Mater. Degrad., vol. 3, pp. 53–74, 2022. https://doi.org.10.3390/cmd3010004
  8. S. Sprenger, "Epoxy resin composites with surface-modified silicon dioxide nanoparticles: A review," J. Appl. Polym. Sci., vol. 130, pp. 1421–1428, 2013. https://doi.org/10.1002/app.39208
  9. X. Zhang and M. Hoogeland, "Influence of deformation on corrosion of mooring chain steel in seawater," Materials and Corrosion, vol. 70, no. 6, pp. 962–972, 2019. https://doi.org/10.1002/maco.201810766
  10. A. Mentes and M. Yetkin, "An application of soft computing techniques to predict dynamic behaviour of mooring systems," Brodogradnja, vol. 73, no. 2, pp. 121–137, 2022. https://doi.org/10.21278/brod73207
  11. H. Paulos, “Material degradation in mooring chains for floating structures in deep waters,” University of Stavanger, Norway, UiS publishing platforms, 2022
  12. V. D. Robert et al., "Hybrid nanostructured coatings for corrosion protection of base metals: a sustainability perspective," Materials Research Express, vol. 2, 032001, 2015. https://doi.org/10.1088/2053-1591/2/3/032001
  13. H. Mehdi et al., "Nanocomposite organic coatings for corrosion protection of metals: A review of recent advances," 2021. https://doi.org/10.1016/j.porgcoat.2021.106573
  14. G. X. Shen, Y. C. Chen, and C. J. Lin, "Corrosion protection of 316 L stainless steel by a TiO₂ nanoparticle coating prepared by sol–gel method," Thin Solid Films, vol. 489, no. 1–2, pp. 130–136, 2005. https://doi.org/10.1016/j.tsf.2005.05.016
  15. W. Devin et al., "Field studies of microbiologically influenced corrosion of mooring chains," in Offshore Technology Conference, Houston, Texas, USA, Paper No. OTC-27142-MS, 2016. https://doi.org/10.4043/27142-MS
  16. S. S. Wang, "Improving mooring reliability through risk-based monitoring and inspection," in Offshore Technology Conference, Houston, Texas, USA, Paper No. OTC-30529-MS, 2020. https://doi.org/10.4043/30529-MS
  17. I. Achinike et al., “Remnant life assessment of Bonga FPSO and SPM mooring chains,” in Proc. ASME 37th Int. Conf. Ocean, Offshore & Arctic Engineering, OMAE2018-77941, June 17–22, Madrid, Spain, 2018
  18. S. Nitonye, T. C. Nwaoha, and E. Ofonime, "Comparative analysis of the effect of Vernonia Amygdalina on subsea transmission pipeline," Journal of Mechanical and Energy Engineering, vol. 2, no. 4, pp. 269–276, 2018. https://doi.org/10.30464/jmee.2018.2.4.269
  19. N. Denton, Degradation of mooring chains of floating offshore installations: Chain measurement, estimation of wear, corrosion rates, and their effect on break load, Mooring Integrity Joint Industry Project Phase 2, Health Safety Executive, 2017
  20. K. Ma, A. Duggal, P. Smedley, D. L’Hostis, and H. Shu, "A historical review on integrity issues of permanent mooring systems," in Offshore Technology Conference, Houston, Texas, Paper No. OTC-24025-MS, May 6–9, 2013
  21. C. U. Orji, S. Adumene, S. Nitonye, P. A. Chinwo, and M. Mohseni, "Reliability analysis of offshore pipeline under stochastic degradation," in M. Yazdi, Ed., Safety-Centric Operations Research: Innovations and Integrative Approaches, vol. 232, Studies in Systems, Decision and Control, Cham: Springer, 2025. https://doi.org/10.1007/978-3-031-82934-5_9

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