Odd Occurrences During Cathodic Protection Troubleshooting

摘要

"Stop, Look, and Listen." These words from railroad crossing signs are good ones to keep in mind when troubleshooting cathodic protection (CP). Some troubleshooting efforts are pretty straightforward, involving depleted anodes, broken wires, burned out rectifier stacks, and the like. But there are occasions when nothing seems to make sense, and then it's time to "stop, look, and listen" and figure it out. Here are a few experiences from nearly 45 years of CP work.