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An Introduction to Cathodic Protection Inspection and Testing

COURSE NO: E05-007
An Introduction to Cathodic Protection Inspection and Testing
Course Highlights

This online engineering PDH course provides an introduction to cathodic protection inspection and testing techniques for galvanic and impressed current systems. It includes criteria and inspection actions that, when used either separately or in combination, will indicate whether adequate cathodic protection of a metallic piping system has been achieved.


The effectiveness of cathodic protection or other corrosion control measures can be affirmed by visual observation, measurements of pipe wall thickness, or by use of internal inspection devices. Because such methods sometimes are not practical, meeting any criterion or combination of criteria in this chapter is evidence that adequate cathodic protection has been achieved.  When excavations are made for any purpose, the pipe should be inspected for evidence of corrosion and/or coating condition.  Apply sound engineering practices to determine the methods and frequency of testing required to satisfy these criteria.


The criteria in this discussion have been developed through laboratory experiments and/or verified by evaluating data obtained from successfully operated cathodic protection systems.  Situations may exist where a single criterion for evaluating the effectiveness of cathodic protection may not be satisfactory for all conditions.  Often a combination of criteria is needed for a single structure.


This 5 PDH online course is intended for civil engineers, structural engineers, mechanical engineers, electrical engineers and other design and construction professionals seeking an introduction to the principles of inspection and testing of cathodic protection systems.

Learning Objectives

This PE continuing education course is intended to provide you with the following specific knowledge and skills:

  • Learning about the National Association of Corrosion Engineers (NACE) standards
  • Understanding the importance of negative cathode potential
  • Learning how to inspect and test bare or ineffectively coated pipelines where long line corrosion activity is of a primary concern
  • Understanding how aluminum may suffer from corrosion under high pH conditions
  • Learning the fundamentals of inline inspection of pipes
  • Learning about stray currents and stray electrical gradients
  • Learning how to test for a short between two structures with cathodic protection on one structure
  • Knowing when you should test for a short between two structures without cathodic protection on either structure
  • Understanding the current requirement testing procedures
  • Learning about the use of temporary anodes
  • Learning about anode bed inspection and testing for impressed current cathodic protection systems
Course Document

In this professional engineering CEU course, you need to review the course document titled, "An Introduction to Cathodic Protection Inspection and Testing".

To view, print and study the course document, please click on the following link(s):
An Introduction to Cathodic Protection Inspection and Testing (1.7 MB)
Course Quiz
Once you complete your course review, you need to take a multiple-choice quiz consisting of twenty five (25) questions to earn 5 PDH credits. The quiz will be based on the entire document.
The minimum passing score is 70%. There is no time limit on the quiz, and you can take it multiple times until you pass at no additional cost.
Certificate of Completion

Upon successful completion of the quiz, print your Certificate of Completion instantly. (Note: if you are paying by check or money order, you will be able to print it after we receive your payment.) For your convenience, we will also email it to you. Please note that you can log in to your account at any time to access and print your Certificate of Completion.

To buy the course and take the quiz, please click on: