Taking measurements that matter
The beauty of cathodic protection systems are the standards that support them. You can take a reading that will show if the metal is protected against damage by corrosion. The measurement is backed by a century of research on what is effective -- and what is not.
A Midwestern gas utility discovered that many of the annual cathodic protection readings on its pipelines were below acceptable criteria. That meant the company was potentially liable for regulatory fines that could total in the tens of thousands of dollars.