The course will provide an in-depth introduction into the subject of the in-line inspection of pipelines. We will look at the role the in-line inspection plays in the overall pipeline inspection and pipeline maintenance procedures. The course will introduce the flaws and anomalies observed in pipelines. In-Line inspection tools and the various physical principles they use will be covered in depth. The material covers details on a pipeline inspection operation, including pipeline preparation, cleaning, gauging. Final Reports, Reporting Formats are discussed. The course also includes a short introduction into data analysis and run comparisons as well as the integrity assessment of pipelines based on the data provided by in-line inspection tools.