Corrosion Authority

CP 1 Study Guide (Cathodic Protection Tester)

This CP 1 study guide is built for AMPP Cathodic Protection Tester (CP1) exam preparation. It focuses on corrosion fundamentals, safe field practices, correct measurement technique, and basic cathodic protection concepts.

CP 1 establishes the foundation for all higher CP certifications. Your goal is clarity: understand what corrosion is, how CP works, and how to take accurate field measurements safely.

Start here (how to use this guide)

  • Understand corrosion basics first before moving into measurements.
  • Focus on terminology — clear definitions prevent confusion later.
  • Learn correct meter and reference electrode handling.
  • Practice safe field behaviorsafety awareness is part of the exam.

CP 1 exam domains (high-level)

CP 1 is about understanding and correct execution — not advanced calculations.

CP 1 topic map

Corrosion fundamentals

  • What corrosion is (electrochemical reaction)
  • Anode vs cathode behavior
  • Metallic path and electrolyte path
  • Why current must complete a circuit

Cathodic protection basics

Field measurement basics

  • Structure-to-electrolyte potential measurement
  • Reference electrode purpose and handling
  • Meter basics (polarity, stable readings)
  • Recognizing obvious measurement errors

Safety awareness

  • Electrical safety fundamentals
  • Working near energized systems
  • Basic PPE awareness
  • General field hazard recognition

Practice strategy (CP 1)

  • Master terminology.
  • Visualize current flow.
  • Practice labeling measurements correctly.
  • Review safety scenarios carefully.

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Common CP 1 mistakes

  • Confusing anode and cathode roles.
  • Not understanding how current completes the circuit.
  • Improper reference electrode placement.
  • Ignoring safety considerations in field scenarios.

Study roadmap (repeatable)

Phase 1 — Fundamentals (1–2 weeks)
  • Corrosion reactions
  • Basic CP principles
  • Terminology mastery
Phase 2 — Field basics (1–2 weeks)
  • Structure-to-electrolyte measurement
  • Reference electrode handling
  • Basic troubleshooting
Phase 3 — Practice & review (ongoing)
  • Short practice sets
  • Review missed concepts
  • Re-drill weak terminology areas

Topics