An Introduction to Cathodic Protection Principles
- By Usman Naseer
- 0
Course Description
Corrosion is the natural degradation of a material, typically metal, due to its reaction with the environment, and it follows electrochemical principles. Four components are necessary for corrosion to occur: an anode, a cathode, an electrolyte, and a metallic return path. At the anode, metal atoms lose electrons (oxidation) and go into solution as positive ions, causing material loss.
What you'll learn in this course?
Define cathodic protection (CP) and explain its role in corrosion prevention.
Distinguish between galvanic (sacrificial) and impressed current cathodic protection systems.
Identify the key components of each type of CP system.
Apply basic design considerations for CP in buried and submerged structures.
Recognize common CP field testing methods, including potential measurements and current requirement tests.
Interpret CP criteria according to industry standards (e.g., NACE SP0169, BS EN 12954).
Course Curriculum
- Main Content Start: Introduction to Corrosion
- Electrochemical Cells in Practice
- What is Cathodic Protection (CP)?
- Thermodynamic Basis: Pourbaix Diagram
- CP Criteria Overview (NACE SP0169)
- Galvanic (Sacrificial) Anode CP: Basic Principle
- Magnesium Anodes
- Zinc Anodes
- Aluminum Anodes
- Impressed Current Cathodic Protection (ICCP): Principle
- ICCP Rectifiers
- ICCP Anode Materials
- Comparison: Galvanic vs. ICCP
- CP Design Fundamentals: Current Demand
- Calculating Anode Mass (Galvanic)
- Cable and Junction Box Design
- Coating Synergy with CP
- IR Drop and Potential Measurement Errors
- Instant-Off Potentials
- CP of Pipelines: Overview
- CP of Storage Tank Bottoms
- CP of Reinforced Concrete
- CP of Offshore Structures
- Installation of Galvanic Anodes
- Installation of ICCP Systems
- Commissioning Tests
- Routine Monitoring (CP Intervals per NACE)
- Troubleshooting: Low Potentials
- Troubleshooting: High (Overprotection)
- Stray Current Interference
- CP for Internal Surfaces of Vessels & Tanks
- Safety in CP Work
- Standards and References for CP
- Case Study: Pipeline Underprotection Failure
- Case Study: Overprotection Damage
- Computer Modeling in CP Design
- Future Trends: Remote Monitoring & IoT
- Environmental Aspects of CP
- Common Mistakes in CP Application
- Summary
- An Introduction to Cathodic Protection Principles
Usman Naseer
3 
Course includes:
Levelintermediate
Duration180 minutes
Lessons41
Quizzes0
CertificationsYes
Enrolled0