ABSTRACT

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.

chapter Chapter 1|32 pages

The marine corrosion of steel

chapter Chapter 2|25 pages

Cathodic protection basics

chapter Chapter 3|24 pages

Designing according to the codes

chapter Chapter 4|18 pages

Thermodynamics

chapter Chapter 5|20 pages

Electrode kinetics

chapter Chapter 6|19 pages

Protection potential – carbon steel

chapter Chapter 7|29 pages

Current and polarisation

chapter Chapter 8|15 pages

Corrosion resistant alloys

chapter Chapter 9|19 pages

Underwater coatings

chapter Chapter 10|44 pages

Sacrificial anodes

chapter Chapter 11|25 pages

Impressed current systems

chapter Chapter 12|39 pages

The effect of CP on mechanical properties

chapter Chapter 13|35 pages

Fixed steel structures

chapter Chapter 14|42 pages

Submarine pipelines

chapter Chapter 15|21 pages

Ships and floating structures

chapter Chapter 16|26 pages

Internal CP

chapter Chapter 17|31 pages

Modelling

chapter Chapter 18|39 pages

CP system management