Abstract: A holiday detector system can include a holiday detector with a housing for holiday inspection circuitry to perform holiday inspection on a surface, a probe extending from the housing for surface inspection, the probe electrically coupled to the holiday inspection circuitry. The holiday detector system can also include a graphical user interface device electrically connected to the holiday detector. The graphical user interface device has a display screen and logic and circuitry to receive holiday inspection signals from the holiday detector apparatus; generate digital data representative of the holiday inspection signals; format the digital data into a graphical representation of the holiday inspection signals; display the graphical representation of the holiday inspection signals on the display screen; and digitally store the digital data in a data storage device.

Abstract: The present disclosure provides a method including: generating a definition of a buried pipeline and a tool, wherein the buried pipeline comprises a metal wall, wherein the tool comprises a transmitter and multiple receivers circumferentially positioned inside the metal wall but without contacting the metal wall; obtaining a solver configured to simulate a response on each of the multiple receivers; applying the solver based on, at least in part, the definition of the buried pipeline and the tool when the transmitter sends a known electromagnetic (EM) waveform; generating simulated responses on the multiple receivers from interacting with the wall of the buried pipeline; and based on, at least in part, the simulated responses, training an inference model configured to predict the wall-loss condition of a particular buried pipeline when presented with measurement data inside the particular buried pipeline.