Which type of monitoring can help identify blockages in pipes?

CCTV inspection is effective for identifying blockages in pipes because it involves the use of a camera that is inserted into the sewer system. This allows operators to visually assess the interior of the pipes in real-time. By providing clear imagery, CCTV can reveal the location and nature of any obstructions, such as roots, debris, or other blockages, making it easier to determine the necessary actions for remediation.

In contrast, while thermal imaging can detect temperature differences that might suggest problems, it does not provide a direct view of blockages. Remote sensing utilizes sensors to gather data about conditions but often lacks the detail necessary to pinpoint specific blockages visually. Ultrasonic testing can measure the thickness of the pipe material and detect flaws, but it does not visualize blockages within the pipes themselves. Therefore, CCTV inspection stands out as the most direct and effective method to visually diagnose and identify blockages within a sewer system.