Which inspection method involves the use of cameras to assess the inside of sewer lines?

CCTV inspection is the method that utilizes cameras to visually assess the inside of sewer lines. This technology enables operators to capture high-quality video footage of the sewer system, allowing them to observe the condition of pipes, identify blockages, and detect any damage or degradation without having to excavate or disrupt the surface above. This method is particularly effective for inspecting long stretches of pipeline, as it provides real-time information and can help prioritize maintenance work based on the findings.

Physical inspection typically refers to observing or interacting directly with infrastructure components, such as checking access points or manholes, without the use of advanced technology. Visual inspection generally involves assessing the general appearance or condition of infrastructure without the aid of cameras, relying more on human observation. Pressure inspection focuses on evaluating system integrity by applying pressure tests, which does not involve visual assessments through cameras.