Monitoring

Pipelines are monitored by introducing various probes inside and outside the pipeline. These probes are used to monitor the state of the pipeline, to optimize corrosion control strategies (using for example, corrosion inhibitors, coatings), and to maintain the integrity of pipelines. The commonly used monitoring probes inside the pipeline include weight loss, linear polarization, electrochemical noise, and electrical mesurement.  Outside the pipeline, commonly used monitoring probes include hydrogen, FSM (field signature measurement) and coupons.