Sewage systems are essential infrastructure for the proper functioning of cities and industrial sites. However, inspecting them remains a major challenge. Between hard-to-reach pipes, confined spaces, and the need to maintain a high level of safety for operators, traditional methods quickly reach their limits.
At Multinnov, we have developed innovative visual inspection solutions to address these challenges. Drawing on our expertise in inspection robotics and technologies specifically designed for complex environments, we support operators in the diagnosis, monitoring, and maintenance of their sewer systems.
Multinnov: French Expertise Serving Sewer Systems
Inspecting underground networks plays a crucial role in urban infrastructure management. Detecting a crack, a leak, or a blockage before it causes significant damage helps prevent costly repairs and service disruptions.
For several years now, we have been developing solutions designed for exploring hard-to-reach environments. Our approach is based on a simple goal: to enable operators to obtain reliable data while minimizing their teams’ exposure to the risks associated with confined spaces.
Sewage systems do indeed present numerous challenges:
- access that is sometimes limited or dangerous;
- presence of water, sludge, or deposits;
- reduced visibility;
- risks associated with gases or confined spaces;
- the need for rapid and accurate diagnoses.
In light of these challenges, the use of an inspection robot represents a significant advancement in inspection practices. By replacing direct human intervention in certain sensitive areas, it becomes possible to simultaneously improve the safety, efficiency, and quality of inspections.
This approach is fully aligned with the digital transformation of infrastructure, where the collection of reliable visual data is becoming a key driver for optimizing maintenance operations.
Robotic TV Inspection Applied to Pipelines
At the heart of our expertise lies the Roview3, a solution designed for video inspection (ITV) of sewer systems and underground structures.
Designed to operate in harsh environments, this inspection robot enables a detailed visual inspection of the interior of pipelines without requiring direct human intervention. Equipped with a high-performance inspection camera, it transmits images in real time, allowing operators to assess the condition of the infrastructure.
This ability to observe is particularly valuable for identifying:
- structural cracks;
- water leaks;
- pipe deformations;
- deposits and blockages;
- defects that could compromise the network's lifespan.
Thanks to the instant transmission of images, teams have access to information they can use right away. This allows them to make decisions regarding maintenance or rehabilitation more quickly.
Camera inspection is now the gold standard in the sewerage sector. It provides an accurate picture of the actual condition of infrastructure while avoiding invasive inspections or costly dismantling operations.
At Multinnov, we integrate this technology into a comprehensive approach aimed at simplifying field operations. The Roview3 thus offers a solution tailored to the needs of local governments, network operators, and industry players dealing with complex infrastructure.
Our expertise is not limited to inspection robots. We also develop drone solutions designed to explore certain confined or hard-to-reach environments, further expanding diagnostic capabilities in response to the challenges encountered in the field.
Toward Smarter Maintenance of Urban Infrastructure
Changes in sewer systems now call for an approach that focuses more on preventive maintenance than on emergency repairs.
One of the main advantages of robotic inspection is its ability to detect anomalies at the earliest signs. A minor crack or the onset of water infiltration can thus be identified before they cause more significant damage.
This proactive approach offers several tangible benefits to operators:
- reduction in costs associated with major repairs;
- minimizing service interruptions;
- improved work planning;
- optimization of maintenance budgets;
- better traceability of inspections performed.
The use of an inspection robot also helps improve team safety. Operators can perform diagnostics remotely without entering confined spaces that pose potential risks.
Reducing human exposure is now a major challenge for infrastructure managers. It leads to significant gains in operational efficiency, as inspections can be carried out more quickly while maintaining a high level of accuracy.
In a context where local governments and operators are seeking to extend the lifespan of their infrastructure while keeping costs under control, innovation is becoming a strategic driver. The technologies developed by Multinnov are fully aligned with this approach, providing reliable tools to improve the monitoring and management of sewer systems.
Today, sewer system inspections require solutions that combine safety, precision, and efficiency. Thanks to our expertise in inspection robotics and technologies such as the Roview3, we support professionals in the diagnosis and maintenance of their underground infrastructure.


