What do Close Interval Potential Surveys measure?

Close Interval Potential Surveys are specifically designed to measure the structure-to-electrolyte potential of a buried structure, such as a pipeline or a tank. During this survey, measurements are taken at regular intervals along the structure to evaluate how well cathodic protection is being provided across its length.

This method is crucial in identifying areas where there may be insufficient protection, which could lead to corrosion problems. By measuring the structure-to-electrolyte potential, operators can assess the effectiveness of the cathodic protection system and make any necessary adjustments to improve its performance.

The focus of this survey on potential differences is essential for evaluating corrosion risks, whereas the other choices pertain to different aspects or characteristics not directly related to the primary goal of Close Interval Potential Surveys.