AMPP CP1 Cathodic Protection TesterExam Guide & Preparation
AMPP CP1 Cathodic Protection Tester is the entry-level credential in AMPP's Cathodic Protection certification program, validating your ability to observe, record, and measure the effectiveness of galvanic and impressed-current CP systems on underground and submerged metallic structures. AMPP was formed by the 2021 merger of NACE International and SSPC, so this credential is still frequently referenced as "NACE CP1" in job postings, it's the same program under AMPP's current name.
AMPP CP1 Cathodic Protection Tester is the entry-level credential in AMPP's Cathodic Protection certification program, validating your ability to observe, record, and measure the effectiveness of galvanic and impressed-current CP systems on underground and submerged metallic structures. AMPP was formed by the 2021 merger of NACE International and SSPC, so this credential is still frequently referenced as "NACE CP1" in job postings, it's the same program under AMPP's current name.
The current Theory Exam (test code NACE-CP1-001), effective November 21, 2025, runs 100 multiple-choice questions across 3 hours, of which 81 are scored and 19 are unscored pretest items, up from the prior 81-question, 2.5-hour format. It's delivered by computer-based testing at Pearson VUE, and while the course manual itself isn't provided during the exam, reference material for equations and conversions is supplied as a PDF.
Beyond the Theory Exam, certification also requires the CP1 Practical exam, delivered during the CP1 course itself, successful completion of the Ethics for the Corrosion Professional course, and an approved application. AMPP recommends at least 6 months of CP-related work experience before attempting certification, though the course itself has no formal prerequisite.
Whether you're looking for a structured AMPP CP1 course, self-paced AMPP CP1 online training, or simply a focused way to study for AMPP CP1 certification requirements around a working schedule, EIM's AMPP CP1 training platform is built to fit all three.
CP1 vs CP2 vs CP3 vs CP4
AMPP's Cathodic Protection program runs CP1 through CP4 as a sequential progression, not four independent certifications. CP1, this certification, is the entry point with no formal prerequisite beyond the recommended 6 months of experience. CP2 (Cathodic Protection Technician) requires holding CP1 plus additional documented field experience. CP3 (Cathodic Protection Technologist) requires CP2 plus further experience and adds CP system design fundamentals. CP4 (Cathodic Protection Specialist), the senior level, requires CP3 plus extensive design and program-management experience.
CP1 is specifically scoped to testing and field measurement, not CP system design. If your role involves designing cathodic protection systems rather than testing and monitoring existing ones, CP1 is still the required starting point, but you'll eventually need to progress to CP3 or CP4 for design-level competency to be certified.
Qualification & Prerequisites
What the Exam Actually Tests
Five domains, weighted by question share. This is the map the question bank is built directly against.
Electrochemistry, oxidation-reduction reactions, Ohm's law, Faraday's law
Structure-to-soil potential measurement, current and voltage measurement, soil resistivity testing
Reference electrodes, multimeters, shunts, test stations
Recordkeeping, basic troubleshooting for shorts, industry standard practices
Personal protective equipment, hazard recognition, site-specific safety procedures
| Domain | Covers | |
|---|---|---|
| 01 | Corrosion Fundamentals | Electrochemistry, oxidation-reduction reactions, Ohm's law, Faraday's law |
| 02 | Installation & Field Measurement | Structure-to-soil potential measurement, current and voltage measurement, soil resistivity testing |
| 03 | Equipment & Equipment Management | Reference electrodes, multimeters, shunts, test stations |
| 04 | Industry Practices | Recordkeeping, basic troubleshooting for shorts, industry standard practices |
| 05 | Safety | Personal protective equipment, hazard recognition, site-specific safety procedures |
01. Corrosion Fundamentals
02. Installation & Field Measurement
03. Equipment & Equipment Management
04. Industry Practices
05. Safety
How to Register and What to Expect on Exam Day
Candidates register directly through AMPP, not through EIM or any third-party training provider. The CP1 Theory Exam is delivered via computer-based testing at Pearson VUE, while the Practical exam is administered as part of the CP1 course itself.
AMPP's official fee for the CBT theory exam alone (or a retake) is $275; the exam fee is included in the CP1 course fee for candidates who attend the course. This is separate from EIM's AMPP CP1 self-prep pricing. Certification is valid for 3 years and serves as the prerequisite background for CP2.
How to Prepare for AMPP CP1 Cathodic Protection Tester
Self-paced by default. Add live instruction if you want structured guidance.
AMPP CP1 Cathodic Protection Tester Question Bank
900 practice questions across 4 modules, mapped to every BOK domain. Study at your own pace, no fixed schedule required.
Sample Practice Questions
A technician is measuring soil resistivity using the Wenner four-pin method. What does increasing the pin spacing primarily allow the technician to assess?
In a galvanic cathodic protection system, what electrochemical role does the sacrificial anode play relative to the structure being protected?
What's Included in the Self-Prep Package
AMPP CP1 Question Bank
Scenario-based questions covering corrosion fundamentals, field measurement, and equipment use.
AMPP CP1 Study Notes
Downloadable study material aligned to the CP1 body of knowledge and current exam weighting.
AMPP CP1 Mock Test
Practice test mirroring the current 100-question, 3-hour theory exam format.
Related Certifications
Common Questions
What is the AMPP CP1 certification?
How many questions are on the AMPP CP1 exam?
Do I need experience to take AMPP CP1?
How much does AMPP CP1 certification cost?
What does the AMPP CP1 exam cover?
How long is AMPP CP1 certification valid?
What does EIM's AMPP CP1 training include?
Is AMPP CP1 the same as NACE CP1?
Why AMPP CP1 Cathodic Protection Tester Matters for Asset Integrity Careers
The November 2025 format change, from 81 questions in 2.5 hours to 100 questions in 3 hours, added 19 unscored pretest questions without changing the number of questions that actually count toward your score. Candidates studying from older material referencing the 81-question, 2.5-hour format should confirm they're using current preparation resources, since the exam day experience has meaningfully changed.
Because reference material is provided as a PDF for equation and conversion questions, effective AMPP CP1 exam preparation should include practicing with that reference format, not just memorizing formulas cold. EIM's AMPP CP1 question bank is built around the exam's real weighting toward field measurement and installation, since that's where the bulk of the exam's questions concentrate.
- ✓900 practice questions
- ✓4 structured modules
- ✓1 Year
- ✓Mobile-friendly platform
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