Corrosion Authority

CP

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Guides

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Cathodic Protection Certification Levels (CP1–CP4) | AMPP Overview
Compare AMPP/NACE cathodic protection certification levels from CP1 to CP4. Understand who each level is for, typical prerequisites, exam format, and a practical roadmap for progressing through CP testing, troubleshooting, and design.
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Visual Guides

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Complete CP Circuit — ICCP System (Diagram #001)
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Current Attenuation Along a Pipeline — Distance vs Potential (Diagram #006)
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IR Drop — ON vs Instant-OFF (Diagram #004)
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Polarization & Potential Shift — Before vs After CP (Diagram #003)
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Reference Electrode Placement — Close vs Remote (IR Error) (Diagram #005)
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