Concepts First
The first guides explain corrosion cells, cathodic protection theory, and the basic difference between galvanic and impressed current systems.
Cathodic Protection Learning Guides
Follow these guides in sequence to build from corrosion fundamentals to CP system behavior, field measurements, criteria, survey methods, and troubleshooting.
This section is the main instructional path. Use it before jumping into practice questions or interactive quizzes.
How the Learning Path Works
Then Components
After the theory, the path introduces anodes, groundbeds, rectifiers, RMUs, reference electrodes, test stations, coupons, bonds, and electrical isolation.
Then Interpretation
The later guides focus on potentials, instant-off readings, polarization, CP criteria, survey methods, and troubleshooting.
Current Distribution
Learn why CP current does not distribute uniformly and how coating, soil, geometry, and anode location affect readings.
Attenuation
Understand how CP influence decreases with distance and why potential profiles matter.
1. Fundamentals
These pages explain the electrochemical basis for corrosion and why cathodic protection reduces corrosion on buried or submerged metallic structures.
2. CP System Types
These guides compare galvanic and impressed current CP systems, including how each system produces protective current and where each system is commonly used.
3. System Components
These pages explain the hardware and field components that make CP systems operate and allow technicians to inspect, test, and troubleshoot them.
4. Measurements and Criteria
These guides explain how CP data are measured and interpreted. They are especially important before studying criteria, instant-off readings, or polarization.
5. Field Methods and Troubleshooting
These pages connect the concepts to field work: surveys, test stations, coupons, isolation, bonds, and common troubleshooting patterns.