Marine Corrosion and Cathodic Protection

Cathodic protection (CP) mitigates the high cost of steel and other alloys corroded in seawater and seabed sediments. Marine Corrosion and Cathodic Protection is a comprehensive guide to corrosion issues and presents methodologies to tackle common offshore code-based CP designs. Advanced theory is developed for non-routine CP applications, with and without subsea coating systems.

The interactions between CP and the fatigue and hydrogen embrittlement characteristics of alloys are explained. Sacrificial (or galvanic) anodes and impressed current systems are examined, followed by descriptions of successful and unsuccessful applications on petroleum installations, harbours, jetties, pipelines, windfarm foundations, ships and floating production storage and offloading vessels FPSOs. Retrofit CP systems for the life extension of assets, together with methods for applying CP internally in both static and flowing systems are evaluated. A critical review of the role of physical and computational modelling in CP design and evaluation addresses the more geometrically complex applications. Techniques for, and limitation of, CP surveying, inspection and monitoring are explained in the context of system management.

This text is ideal for engineers, designers, manufacturers, equipment suppliers and operators of offshore CP systems.

1. The Marine Corrosion of Steel. 2. Cathodic Protection Basics. 3. Designing According to The Codes. 4. Thermodynamics. 5. Electrode Kinetics. 6. Protection Potential – Carbon Steel. 7. Current and Polarisation. 8. Corrosion Resistant Alloys. 9. Underwater Coatings. 10. Sacrificial Anodes. 11. Impressed Current Systems. 12. The Effect of CP on Mechanical Properties. 13. Fixed Steel Structures. 14. Submarine Pipelines. 15. Ships and Floating Structures. 16. Internal CP. 17. Modelling. 18. CP System Management.

Dr Chris Googan is an AMPP International Accredited Corrosion Specialist. After graduating in chemistry, and spending several years in the steel and copper industries, he gained an MSc in corrosion science (1977) and a PhD in cathodic protection (1979). After five years in a corrosion role in the protective coatings industry, he became a freelance corrosion engineering consultant. His experience of corrosion, materials, coatings and cathodic protection has been gained in over 40 countries.