Abstract: A computer-implemented method of training a classification model includes the steps of obtaining, by at least one computer, a plurality of historical resistance trends from a plurality of installed rectifier sites and rectifier site metadata for each installed rectifier site of the plurality of installed rectifier sites; labelling each historical resistance trend of the plurality of historical resistance trends as one of a plurality of historic resistance trend classifications; and, inputting into a machine learning algorithm the historical resistance trends and the rectifier site metadata of the plurality of installed rectifier sites to train the classification model to output a predicted resistance trend classification in response to rectifier site metadata input into the model.

Abstract: A method for calibrating close interval survey (CIS) data with remotely monitored data includes obtaining a plurality of CIS measurements from a plurality of CIS locations along a pipeline, obtaining a first plurality of remotely monitored measurements from a plurality of test stations positioned along the pipeline for a first time period, assigning, for each of the plurality of test stations, one of the plurality of CIS locations as an adjacent CIS location based on location data for the plurality of CIS locations and the plurality of test stations, and, calibrating the CIS data with the remotely monitored data by using the first plurality of remotely monitored measurements for each of the plurality of test stations as a proxy measurement for the adjacent CIS location.

Abstract: A cathodic protection (CP) interruption system includes a metallic structure and a plurality of passive CP units embedded in an electrolytic medium, a plurality of test units electrically coupled with the structure and each of the CP units, and a low-power consumption component arrangement. The arrangement includes a real-time clock (RTC) and a GPS receiver coupled with each test unit for receiving GPS time from a GPS satellite. A controller is communicatively coupled with each RTC and GPS receiver for activating the GPS receiver once the RTC reaches a predetermined time to synchronize a RTC time of each RTC with GPS time. Interruption modules are coupled in electrical and data communication with the controller. The controller selectively changes an activation state of each interruption module once the RTC time reaches a predetermined activation state change time to selectively electrically couple or decouple each CP unit from the structure.