Sewerage systems play a vital role in water management and public health. They evacuate wastewater and stormwater, protect natural environments and support the smooth running of urban areas. However, these underground infrastructures are often old, even dilapidated, and monitoring them remains a logistical and technical challenge.
In Normandy, and more particularly in Seine-Maritime, most underground networks date back to the 60s and 80s. Their accelerated ageing makes a rigorous maintenance strategy essential. To achieve this, local authorities now have a state-of-the-art tool at their disposal: televised inspection (TVI) using a mobile robot, which enables in-depth diagnosis of the condition of pipes, without digging up or interrupting service.
Among the best-performing solutions on the market are the Roview2a robot developed by French company MultinnovBased in Néville (76460), it offers a modern alternative to traditional inspection techniques, combining precision, autonomy and safety.
Keep a close eye on aging networks in Normandy
As the lifespan of our infrastructure lengthens, and we fall behind on network renewal, network monitoring becomes a strategic imperative. In Seine-Maritime, there are several thousand kilometers of wastewater networks, often made of sandstone, concrete or cast iron, with increased risks of :
- Longitudinal cracks caused by wear or ground movement,
- Subsidence due to erosion or settlement,
- Root intrusions cause blockages and reduce flow,
- Leaky joints,
- Obstructions caused by solid deposits, sludge or sand.
The consequences can be far-reaching: overflows, seepage, groundwater pollution, even road collapse in the most critical cases. Municipalities, syndicates and delegatees must therefore adopt a logic of regular preventive inspection, targeted on at-risk sections.
This need is all the more pressing in coastal communities (Fécamp, Dieppe, Le Tréport...), where unstable soils and humidity accelerate the ageing of structures.
Roview2: a breakthrough technology for ITV inspection
Le Roview2, conçu par Multinnov, est un robot d’inspection télévisuelle spécifiquement développé pour les canalisations non visitables (diamètre < 1400 mm). Son design robuste et sa technologie embarquée en font un outil particulièrement adapté aux environnements difficiles, tels que ceux rencontrés dans les réseaux anciens normands.
Top-level technical features
- 4K camera on motorized turret (360°/180°): for panoramic vision and precise inspection of all areas.
- Ultra-powerful LED lighting (up to 12,000 lumens): ideal for dark pipes or pipes with deposits.
- Live wireless transmission: images are sent in real time to a tablet, with on-board telemetry (distance traveled, inclination, position).
- Compact and waterproof (approx. 4 kg): the Roview2 can float, move on slopes and overcome obstacles.
- Several hours' autonomy: allowing inspection of several hundred meters in a single session.
- Compliance with NF EN 13508-2: ensuring integration into standard ITV processes.
A concrete solution for operations
Thanks to its technology, the Roview2 allows :
- early detection of structural defects (microcracks, faulty joints),
- optimized interventions (targeted repairs, no unnecessary cleaning),
- improved safety (no human intervention in the pipeline),
- network monitoring over time (archiving of images and reports).
This approach limits road closures, intervention costs and the risks for employees. It is also a tool for transparency vis-à-vis supervisory authorities, contractors and the general public.
Multinnov: local expertise in the heart of Seine-Maritime
Founded in Normandy, Multinnov has rapidly established itself as a key player in the world ofrobotized inspection in confined spaces. Headquartered in Néville (76460), the company is a privileged partner for local authorities in the 76 département.
Made in France
All development, assembly and technical support are carried out in France. This approach guarantees maximum reactivity in case of need, and total control of the production chain. By focusing on French manufacturing, Multinnov also strengthens France's technological sovereignty.
Tailor-made services
Multinnov does more than just sell equipment:
- It offers ITV training courses for technical agents and companies,
- It maintains and updates equipment,
- It carries out diagnostic work throughout the region,
- It offers an on-site demonstration or rental service.
This proximity enables us to create a genuine relationship of trust with local public and private players. By working with a local service provider, local authorities can be assured of long-term support, ensuring the durability of their infrastructures.
Case study: a successful inspection at Dieppe
During a recent mission in downtown Dieppe, a preventive diagnosis identified several anomalies in a pipe dating back to 1973:
- 20 cm diameter root intrusion,
- subsidence of 5 cm over 4 metres,
- longitudinal crack at 80% of the perimeter.
The Roview2 provided us with usable high-definition images in less than an hour, which we used to plan a targeted intervention (liner repair), avoiding costly earthworks and weeks of work.
This type of mission can now be reproduced in any commune in the department, without disrupting traffic or damaging the roads.
Buried sewer networks are vital infrastructures that urgently need to be effectively monitored, especially in Normandy where the average age of pipes exceeds 40 years. Television inspection, when carried out with a modern tool like the Roview2enables us to meet these challenges with precision, safety and cost-effectiveness.
Thanks to its expertise, local roots and made-in-France technology, Multinnov is already helping numerous local authorities in Normandy to modernize their maintenance practices.
Whether you're a network management professional, a local authority, a public utility or a service provider in the 76 region, it's time to put your trust in robotic innovation. Multinnov supports you, both in the field and remotely, to turn your maintenance strategy into a lever for sustainable performance.
