We frequently receive calls or emails from businesses and individuals requesting video inspection services for sections of the drainage system in their neighborhood or on the properties where their homes or businesses are located. The primary goal is to assess the condition of the drainage pipes and identify solutions to existing problems.

Often, these requests stem from desperate situations where the applicants don't fully understand the reasons for and implications of conducting a video inspection of the drainage system. They may mistakenly believe that once the problem is identified, it will be resolved quickly and easily. However, the video inspection process is a diagnostic technique designed to obtain a detailed examination of the condition of the pipes. Over time, pipes typically undergo structural changes due to natural and environmental factors, such as differential settlement, sediment buildup, internal corrosion from the disposal of unsuitable chemicals, obstruction by foreign objects, or more serious problems like leaks, intrusion of tree roots or vegetation, joint failure, and structural damage from fractures, among others.

It's important to clarify that video inspection alone doesn't solve the problem. This tool is merely a visual diagnostic that provides an accurate picture of the pipes' condition, comparable to a laparoscopic examination of the human digestive system. Correcting the problem requires further testing and a comprehensive action plan.

The good news is that both destructive and non-destructive solutions exist. Destructive solutions involve demolishing the existing infrastructure where the pipes are located, with the aim of replacing them with new ones. This process, while effective, can be costly and complicated, even when the specific problem has already been identified.

On the other hand, non-destructive solutions allow for the repair of pipe problems without extensive excavation. By inserting a new pipe inside the existing one, the heavy labor associated with excavation, the creation of cold joints, and other drawbacks typical of conventional repair methods are avoided. This approach offers a faster and less invasive option for pipe rehabilitation.

There are several non-destructive solutions on the market, some of the most prominent being MaxiLiner and PermaLiner, among others.

What is required to perform a video inspection?

It is generally recommended that drainage lines be completely cleared of sediment, meaning free of any obstructions or sludge buildup that could hinder obtaining clear and accurate images of the pipes' actual condition. This also facilitates the identification of any liquids that may be being discharged into them. Prior desilting is essential and a necessary condition for obtaining an efficient and effective diagnosis.

In many cases, if drainage lines are not cleared, there is a risk of obstructing video inspection cameras, which generally leads to useless results and work that yields no useful information. Furthermore, it is crucial to identify the presence of hydrocarbons or flammable gases in the pipes, as this could create explosion hazards, especially in areas with high methane concentrations.

It's important to note that not all video inspection cameras are designed to operate under these conditions. Therefore, before undertaking any work, ensure your equipment is capable of inspecting in environments containing methane or flammable liquids. If you have any questions, please don't hesitate to contact us for assistance in selecting the appropriate equipment. 

At Soneli, we offer a wide range of video inspection systems, including handheld push cameras with ranges of 60 to 120 meters, as well as fully robotic systems.