Standards

Plain-English explanations of corrosion and cathodic protection standards, criteria, and field interpretation concepts.

This section is designed to explain what corrosion and cathodic protection standards mean in practice. These pages are educational references written for technicians, engineers, and certification candidates. They do not replace the official standards.

100 mV Polarization Criterion Explained

Plain-English explanation of the 100 mV polarization criterion and how polarization shift is used to evaluate cathodic protection effectiveness.

Cathodic Protection Standards Measurement Polarization Polarization Shift 100 Mv Criterion Structure To Electrolyte Potential CP 1

Instant Off Potential Explained in Plain English

Learn what instant off potential means, why it is used in cathodic protection, and how it helps reduce IR drop error during field measurements.

Standards Measurement Cathodic Protection Instant Off Potential IR Drop Current Interruption Reference Electrodes

IR Drop in Cathodic Protection Explained

Plain-English explanation of IR drop in cathodic protection, why it affects potential measurements, and how it changes field interpretation.

Cathodic Protection Standards Measurement IR Drop Structure To Electrolyte Potential Reference Electrodes Polarization CP 1

Pipe-to-Soil Potential Explained

Plain-English explanation of pipe-to-soil potential, what the measurement represents, and how it is interpreted in cathodic protection work.

Cathodic Protection Standards Measurement Pipe To Soil Potential Structure To Electrolyte Potential Reference Electrodes IR Drop CP 1

Polarization Shift Explained

Plain-English explanation of polarization shift, how it is measured, and how it is used to evaluate cathodic protection effectiveness.

Cathodic Protection Standards Measurement Polarization Polarization Shift Structure To Electrolyte Potential IR Drop CP 1

Reference Electrode Placement Explained

Plain-English explanation of reference electrode placement, why placement matters, and how it affects cathodic protection measurements and interpretation.

Cathodic Protection Standards Measurement Reference Electrodes Structure To Electrolyte Potential IR Drop Pipe To Soil Potential CP 1

Remote Earth Explained

Plain-English explanation of remote earth, what the term means in cathodic protection, and why it matters when interpreting potential measurements.

Cathodic Protection Standards Measurement Remote Earth Structure To Electrolyte Potential Pipe To Soil Potential Reference Electrodes IR Drop

Structure-to-Electrolyte Potential Explained

Plain-English explanation of structure-to-electrolyte potential, what the measurement represents, and how it is interpreted in cathodic protection testing.

Cathodic Protection Standards Measurement Pipe To Soil Potential Reference Electrodes IR Drop Polarization CP 1

−850 mV Criterion Explained

Plain-English explanation of the −850 mV cathodic protection criterion, what it means, how it is interpreted in the field, and where people often misunderstand it.

Cathodic Protection Standards Measurement Potential Criteria Reference Electrodes IR Drop CP 1 CP 2