Non-destructive testing (NDT ) is an essential approach for checking the integrity of industrial structures, equipment and materials without damaging them. In confined, difficult-to-access environments such as pipelines, tanks, ducts or buried networks, this method becomes strategic for ensuring safety, production continuity and the long-term future of installations.
Traditionally, these inspections have required costly, complex and dangerous human intervention. But the rise of robotic technologies and specially adapted inspection drones like the Stereo2 and the Roview2 from Multinnovnow offer a safer, faster and more cost-effective alternative. This article explores the fundamentals of NDT, its constraints, and how Multinnov's innovative solutions are revolutionizing visual inspection in confined spaces for professionals.
Understanding non-destructive testing (NDT) and its challenges
What is CND?
NDT encompasses techniques for detecting defects - cracks, corrosion, deformation, wear and tear - without altering the inspected structure. Among these methods, camera-based visual inspection (CVI) remains the most widely used, as it is simple, fast and reliable, as long as the visual data provided is of sufficient quality. In this way, NDT protects equipment while guaranteeing ongoing reliability.
The limits of traditional methods
- High costs: mobilization of teams, scaffolding rental, access control...
- Risks for personnel: exposure to heat, dust, toxic atmospheres or spatial confinement, risk of falls or accidents.
- Difficulty of access: some pipes or networks that cannot be inspected (too narrow, clogged, submerged, etc.) cannot be inspected safely or efficiently by hand.
- Production downtime: time-consuming access, safety concreting, shutdown or slowdown of installations to gain access.
- Incomplete diagnostics: blind spots, reduced visibility, reduced capture time - high risk of missing faults
Drones as an innovative NDT solution
Easy, risk-free access for human teams
Inspection drones like the Stereo2 provide rapid access to confined areas without the need to mobilize personnel at height or in confined spaces. Operated remotely, they ensure safe interventions and avoid human exposure to hazards.
Advanced data collection
Blink of 4K cameras, powerful lighting, stabilization and millimetric control provide precise visual information. This data feeds analyses, 3D reconstructions and decision-making.
Mastering difficult environments
Thanks to their robust technologies (stereo stabilization, LED lighting, reinforced structure), drones like Stereo2 can operate in dust, humidity or even dark ducts without compromising inspection quality.
Time and cost savings
Switching to drones greatly reduces the logistics required. Set-up times are cut by a factor of 2 to 5, and costs can fall by up to 70% compared with traditional methods.
Multinnov and its solutions for efficient NDT
Stereo2: visual inspection drone for confined spaces
- Diamètre < 40 cm, cage carbone résistante aux chocs.
- Stabilized 4K camera for quality high-definition captures.
- Powerful LED lighting (10,000-12,000 lumens), adjustable to plunge into darkness or dispel dust.
- Optical navigation (stereo stabilization) without GPS, ideal for use in ducts or underground environments.
- Real-time video feedback (1080 p), 4K video recording, flight logs compatible with 3D Models (photogrammetry via Agisoft, Pix4D).
Roview2: wireless rolling/floating inspection robot
- Autonomy up to 2h, light weight (≈ 4 kg), compact for narrow pipes.
- High-resolution motorized camera (360°/180°), 10,000-lumen LED lighting.
- Buoyancy, stability up to 45° inclination, tilt warning at 30°, suitable for flooded ducts.
- Complies with NF EN 13508-2 (ITV standard for sewer systems).
- Real-time wireless transmission for efficient remote control.
Multinnov specificity
- Solutions designed and manufactured in France: a guarantee of technological sovereignty, quality and local support.
- 2 to 5× mission time reduction, up to 70% cost reduction.
- A wide range of applications: public works, construction, energy, foundry, sanitation, nuclear and many other industrial structures requiring surveillance in hazardous or confined areas.
- Customer testimonials highlighting responsiveness, thoroughness, results exceeding expectations.
Benefits for manufacturers: safety, efficiency, savings
Increased safety
The operator no longer has to enter high-risk areas, eliminating accidents linked to falls, heat, dust or gases. Unmanned aerial vehicles (UAVs)/robots do the work for the operator, even in unaccessible areas.
Impressive time savings
Interventions can be carried out quickly, without the need for complex logistics or preparation - enabling continuity of normal operations.
Optimized costs
Reduce inspection costs by 50-70%, thanks to reduced logistics, less manpower and immediate response to emergencies.
Precise, comprehensive diagnostics
4K cameras, LED lighting and optical navigation provide precise visual coverage, with the option of 3D reconstructions or exact data feedback. Defects are detected early and accurately.
Added value and competitiveness
Adopt Stereo2 or Roview2 means demonstrating an ability to innovate, control risks and integrate modern technologies, reinforcing performance, reliability and brand image. Technological sovereignty, thanks to French manufacturing, is a differentiating asset.
Non-destructive testing (NDT ) is an essential requirement for maintaining the reliability of industrial installations, but suffers from severe constraints: access, danger, cost and slowness. Innovative solutions from Multinnovinnovative solutions, including Stereo2 drones and the Roview2are revolutionizing this practice.
They combine high-definition visual inspection, enhanced safety, rapid deployment, cost reduction and operational responsiveness. Manufactured in France, these technologies embodyinnovation, reliability and technological sovereignty for the most demanding professionals.
Adopting these tools means securing your operations, improving your diagnostics, limiting your costs, preventing incidents and anticipating interventions. With Multinnov, NDT becomes a strategic solution for modern, efficient and sustainable maintenance.
