Close Interval Potential Surveys involve which type of measurement?

Close Interval Potential Surveys primarily focus on measuring the structure-to-electrolyte potential. This method assesses the voltage difference between an underground metallic structure (such as a pipeline) and the electrolyte environment surrounding it, typically the soil. The measurements help in identifying areas where corrosion is occurring due to insufficient cathodic protection.

By determining the structure-to-electrolyte potential, engineers and technicians can evaluate how effectively the cathodic protection system is working, ensuring that the metal surface is adequately protected from corrosive elements in the electrolyte, which is often soil or water. This information is critical for making necessary adjustments to the cathodic protection system, ultimately extending the life of the metallic structures and preventing costly repairs and failures.

Understanding the significance of this measurement is vital for maintaining the integrity of pipelines and other buried structures in environments where corrosion is a concern.