CP Interference

Cathodic Protection

Cathodic Protection Interference

The Cathodic Protection Interference course focuses on AC, DC, and telluric interference. The course provides in-depth coverage of both concepts and practical application of identifying interference and interference mitigation techniques. Students will learn to identify the causes and effects of interference, conduct tests to determine if an interference condition exists, perform calculations required to predict AC interference.

Classroom instruction is comprised of lecture and discussion, in-class experiments, case studies, and group exercises.

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Who should attend

Individuals with extensive CP f ield experience, graduate level mathematics, and a strong technical background in cathodic protection.

Learning objectives

  • Describe the effects of stray current, AC voltage, and telluric currents on metallic structures
  • Recognize coating types and curing mechanisms
  • Detect stray current, AC interference, and telluric current
  • Recognize deleterious effects of AC and DC interference
  • Mitigate and monitor AC and DC interference
  • Predict AC interference



There are no required prerequisites for this course.


  • NACE CP Technologist Certification or equivalent training
  • Basic Corrosion or Basic Corrosion eCourse
  • 3 years’ exposure to CP field or design level work experience
  • Thorough understanding of units conversions, scientific notation, advanced algebra, DC circuits with previous exposure to basic AC circuits, complex numbers, interference testing

Course Completion

Successful completion of the course is required to earn a certificate of course completion. Requirements are specific to each course and may include a combination of attendance, daily assessments, activities, quizzes, or knowledge checks.

End of course exam

A written exam is administered at the end of the course and is included as part of your course registration.

6 Day Course

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