AMPP CP1 Tester
Cathodic Protection Tester (CP1) Certification
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ExploreAbout this exam
The Cathodic Protection Tester (CP1) certification is an entry-level credential administered by AMPP for people who observe, record, or measure the effectiveness of cathodic protection systems. It is aimed at CP field personnel, technicians, and anyone who supervises CP systems or records field data, and it serves as a gateway into the cathodic protection profession.
The program combines a five-day in-person course with two exams: a theory (written) exam and a practical exam administered on the final day of the course. Instruction covers both galvanic and impressed current systems, with lectures and hands-on training using CP testing equipment and instruments. The skills assessed map to six areas: job site safety; equipment setup and calibration support; system operation; field data collection and testing; documentation and reporting; and field measurement.
Preparation typically includes the CP1 course, the Theory Exam Preparation Guide, the practice exam, and the CP Supervision Guidelines. AMPP strongly recommends six months of CP-related work experience, a high school diploma or GED, and comfort with basic math such as simple algebra, fractions, and conversions. The certification is valid for three years, and candidates have four years to complete all requirements. This overview is independent and is not an official AMPP publication.
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About AMPP CP1 Tester preparation
What is the CP1 exam format?
The CP1 program uses two exams: a theory (written) exam and a practical exam. The practical is administered on the final day of the five-day course. Exam languages are English, Spanish, and Chinese. Confirm the exact schedule and location through your registration confirmation and certification portal, because course length and language may vary by geographic location.
Do I need prerequisites before taking CP1?
There are no prerequisites to take the CP1 course. For certification, AMPP lists the Ethics for the Corrosion Professional course or equivalent training as a prerequisite. AMPP also strongly recommends six months of CP-related work experience, a high school diploma or GED, and the ability to perform basic math calculations such as simple algebra, fractions, and conversions.
How long is the certification valid?
The CP1 certification is valid for three years, and re-certification is required every three years. Certification candidates have four years to complete all requirements, including passing the exam and having an approved application with the required work experience and education. Track your expiration date and start renewal before it lapses.
What happens if I fail an exam?
The AMPP CP1 page does not publish a retake policy, waiting period, or retake fee. Before scheduling, confirm the current rules through your certification portal or AMPP Customer Support. Do not assume you can retake immediately; build extra preparation time into your plan so a failed attempt does not stall your certification window.
What study order do you recommend?
A practical study order is job site safety first, then equipment setup and calibration support, system operation, field data collection and testing, documentation and reporting, and field measurement. Use the Theory Exam Preparation Guide and practice exam to check gaps, and spend hands-on time with the instruments so the practical exam feels routine.
Is the CP1 exam difficult?
Difficulty depends on your field background. The written exam samples six domains, and the practical exam requires you to handle instruments and record data correctly under observation. Candidates who only read slides often struggle with equipment setup, units, and documentation. Practice measurements, conversions, and clean recordkeeping before test day.
What math do I need for CP1?
AMPP recommends the ability to perform basic math calculations, including simple algebra, fractions, and conversions. Practice unit conversions, fraction-to-decimal changes, and formula rearrangement. In the field, arithmetic errors in readings or conversions can make a CP survey look wrong, so drill these until they are automatic.
What languages are available?
The CP1 exams are offered in English, Spanish, and Chinese. AMPP notes that the language and length of the course may vary based on geographic location, so verify the language of your specific course and exam when you register. If you need a particular language, confirm it before paying.