
SIA Advanced Inspection
Advanced Inspection Services are pioneers in the field of aerial inspection, utilizing lidar, thermography, and RGB imaging.
What is SIA?
SIA is AENOR's advanced inspection service for the maintenance, supervision, and control of large infrastructure projects such as power lines, railways, roads, construction, mining, etc., as well as vegetation study and management. The SIA team comprises experts in data capture, analysis, and processing, and an R&D department specializing in image recognition using artificial intelligence .
Main services:
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Information capture
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Mass Data Processing and Handling
Technology
We are pioneers in the field of aerial inspection, using LIDAR , thermography, and RGB imaging.

Information Capture Systems
LIDAR
AENOR It has several LIDAR systems Riegl brand that allows you to capture dense point clouds and high precision.
- For inspection of large linear infrastructures: roads, high and medium voltage power lines, railways, watercourses, construction
- With a multi-return system that ensures accurate terrain identification even under dense forest cover. Essential for vegetation study and management.
- Aerial Lidar and Mobile Mapping
High density points obtained with LIDAR It allows you to obtain a detailed 3D model in which you can locate breaches in the safety distance to the ground, to buildings, to other lines, vegetation, etc.
Thermography
Technique used for measuring existing thermal defects in the reviewed infrastructures.
Hot spot detection.
Visual Inspection
We have high-definition photographic and video cameras, which are integrated with the rest of the technology to take shots from various angles and thus be able to detect the elements of the facilities that have suffered some deterioration or anomaly.
Web Geoportal. Mobility Tool
- Software tool for digital asset management
- Digital twin. 2D and 3D viewers with measurement, query, and analysis tools
- Georeferenced information supporting all standard file types: High-resolution images, 4K video, thermography, LiDAR point clouds, CAD files, PDFs, etc.
- It works quickly: web access from PC/smartphones/tablets
- Specific functionalities for vegetation management
- Specific functionalities for asset inspection
- With geolocation that allows its use in the field to review and resolve incidents
- Possibility of preparing customized reports
Inspection of power lines
We have been working for years on the inspection of electrical assets, particularly high and medium voltage lines, combining the three technologies: LIDAR, THERMOGRAPHY and VISUAL.
LIDAR: Distance anomalies
The high density of points obtained with LIDAR allows for a detailed 3D model to be obtained in which to locate non-compliance with the safety distance to the ground, to buildings, to other lines, vegetation, etc.
- Creation of a “digital twin” of the entire line and its environment
- 3D point cloud of the line and its surroundings
- Classification and processing of the point cloud to obtain the digital terrain model (DTM) and the digital vegetation model (DVM)
- Regulatory distance defects (LIDAR 3D)
Thermography
Hot spot anomalies.
Our inspectors, thanks to their extensive experience, assess the severity of the hotspot during the flight, notifying the electrical company's maintenance personnel if necessary.
Visual inspection: visual defects
Using high-definition cameras and videos, with shots from various angles, the elements of the facilities that have suffered some deterioration are detected.
The experience of our staff in power lines is important for recognizing all their elements and characteristics.
Experience and Advantages
We have been working for electric companies for years and have inspected many kilometers already.
- Submit your work in open and easy-to-use formats
- Our inspectors have extensive experience and qualifications.
We have an R&D department to continue advancing in artificial intelligence and improve the times, quality and costs of the service.

Railways
SIA Advanced Inspection.

Digitization
We transform physical reality into digital reality for modeling, parameterization, and incorporation into:
- Creation of a Digital Twin of the infrastructure
- Mass Data Processing and Handling
Clearances
- Analysis of interferences, collisions, and impact zones in tunnels and overpasses
- Analysis of static and dynamic clearances
Track parameterization
- Measurement of the existing track and adjustment of the best alignment to the existing track
- Adaptation to new layout in accordance with regulations
- Obtaining riprap and lifting
- Quality Controls
BIM
- Scanning of infrastructure, buildings and facilities
- BIM - GIS
- 3D Modeling
Catenary
- Vectorization
- Height and runout verification
- Precise thread placement
- High data capture and short deadlines
- Accelerating inspections and mitigating errors
- REFOS1 and REFOS2 distances
Vegetation Control
- Predictive Control
- Risk Analysis and Maps
- Optimization of felling and pruning plans
- CHALK
- Analysis of Distances and Invasions
Cartography, DEM, MDS
- Advanced classification of LiDAR data
- Plans
- Delineation
Ballast Studies
- Thicknesses
- Levels of Pollution
- Subsidence zones
Vegetation risk management for infrastructure
We have our own proven methodology for conducting a vegetation study around power lines and railway lines, which allows, among other things, the development of an optimized Pruning and Felling plan taking into account the growth forecast of the different forest species.
Plant Cartography
Reduced inspection costs and time. Demonstration of legal compliance. Ability to monitor plan implementation.
- Based on LIDAR data, creation of polygonal vector mapping (not tiling approximation)
- Species identification from the forest map of Spain with LIDAR flight images by forestry experts
The multi-return capabilities of the two LIDAR systems allow for obtaining very good information about the vegetation and ensure the identification of the terrain even with dense forest cover.
- Visualization and recognition
- point cloud classification
- Cartography generation
Modeling the evolution of vegetation
- Determination of height growth
- Territorial compartmentalization
- Assignment of growth in polygons
- Assignment of growth coefficients according to age
- Estimated growth after pruning and felling
- Detection of hazardous vegetation
- Tree inventories
- Thematic Cartography
- Carbon capture maps
Growth modeling is done on the entire LiDAR point cloud. It is not an approximation.
Felling and pruning plan
- Development of an optimized tree felling and pruning plan
- Custom-developed model that uses the actual geometry of the point cloud obtained by LiDAR
- TyP plan with economic budget

Mining and other infrastructure
The use of LIDAR systems in mining with inertial GPS positioning has improved the accuracy and quality of topography by producing detailed 3D models, detecting thousands of points per second.

Mineral exploration
- Initial topography and reconnaissance of the terrain, even in inaccessible areas, reducing work and time
- Calculation of volumes and earthworks
- Calculation of reserves
- Farm design
- Engineering and construction planning: with detailed topographic information for costing
Monitoring and control of mining operations
- Technical inspection/maintenance
- Stock control and spoil heaps
- Machinery and facilities control
- Environmental control
- Occupational risk prevention
The use of LIDAR systems in civil works supervision
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The use of LiDAR systems in civil works supervision. Applications in construction: dynamic updating of 3D models is possible.
- Monitoring of construction progress against the planned schedule (earthmoving, trench construction, walls, necessary access for machinery, material storage areas, etc.)
- Monitoring of resources located on the ground
- Logistics process planning
- Partial work certifications and final work certification
