Cable and pipe locator tools are nondestructive evaluation (NDE) technologies that detect and identify buried cables and pipes based on the measurement of electromagnetic (EM) signals emitted by them. Optical cables such as OPGW and ADSS are widely deployed in substations, cable trenches, transmission towers, and underground pipe networks. Dense cable routes, aging labels, and complex environments bring huge challenges to daily operation and maintenance, cut-over reconstruction, and emergency. he pipeline operator as soon as possible. DAS can go as far as to determine the potential cause of the vibrations, and therefor alert the pipeline oper. This project was funded by the United States Department of Energy, National Energy Technology Laboratory, in part, through a site support contract. Neither the United States Government nor any agency thereof, nor any of their employees, nor the support contractor, nor any of their employees, makes. Subsea cables and pipelines are the hidden arteries of our modern world, supporting offshore energy generation, global internet connectivity, and the secure transport of critical data and energy. As the backbone of critical underwater infrastructure (CUI), these assets are vital not only for. National & Local Joint Engineering Research Center of Harbor Oil & Gas Storage and Transportation Technology/Zhejiang Key Laboratory of Petrochemical Environmental Pollution Control, School of Petrochemical Engineering & Environment, Zhejiang Ocean University, Zhoushan 316022, China China Petroleum. DNV is a leader in verifying distributed fibre-optic sensing (DFOS) systems for pipeline leak detection. DNV is a leader in verifying distributed.