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TESTING & MONITORING

CP Testing & Monitoring

Field measurement and monitoring provide the evidence used to understand cathodic protection performance.

FIELD EVIDENCE

Measurement shows what the system is doing.

Cathodic protection evidence comes from both deliberate field testing and installed monitoring. Together, they show current conditions, reveal change over time, and help determine when field follow-up is needed.

01

Field Testing & Surveys

Test stations, portable reference electrodes, coupons, current measurements, and field surveys provide direct evidence at a specific place and time. Pipe-to-soil potentials, interruption testing, CIS (Close Interval Survey) and other survey methods help evaluate whether the system is providing the intended level of protection.

These measurements also give technicians context that a remote value alone may not provide: field conditions, electrode placement, continuity, interference, coating indications, and other factors that can affect interpretation.

02

Sensors & Remote Monitoring

Installed sensors and remote monitoring units extend visibility between field visits by collecting configured electrical measurements at selected locations. Depending on the system, this can include rectifier voltage and current, structure-to-electrolyte potential, bond current, and other monitored conditions.

Remote data is most useful as evidence of change. Trends, excursions, loss of power, or unexpected readings can help prioritize inspection and troubleshooting, while field verification remains important when conditions require investigation or confirmation.

Conceptual cathodic protection test station connected to a buried protected pipeline