
SIA Advanced Inspection
Advanced Inspection Services is a pioneer in the field of aerial inspection, with the use of lidar, thermography and RGB imaging.
What is SIA?
SIA is AENOR's advanced inspection service for the maintenance, supervision and control of large infrastructures of power lines, railways, roads, construction, mining, etc., as well as the study and management of vegetation. The SIA team is made up of a team of experts in data capture, analysis and processing and an R+D+i department specialized in image recognition with artificial intelligence.
Main services:
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Information Capture
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Processing and Processing of Mass Information
Technology
We are pioneers in the field of aerial inspection, with the use of LIDAR, thermography, RGB images.

Information Capture Systems
LIDAR
AENOR has several LIDAR equipment of the Riegl brand that allows it to capture dense and highly accurate point clouds.
- For inspection of large linear infrastructures: roads, high and medium voltage power lines, railways, waterways, construction
- With a multi-return system that ensures identification of the terrain even with dense forest cover. Essential for the study and management of vegetation
- Aerial Lidar and Mobile Mapping
The high density of points obtained with LIDAR allows a detailed 3D model to be obtained in which to locate non-compliances in the safety distance to the ground, buildings, other lines, vegetation, etc.
Thermography
Technique used to measure thermal defects existing in the infrastructures reviewed.
Detection of hot spots.
Visual Inspection
We have high-definition photographic and video cameras, which integrate 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.
GEOportal Web. Mobility Tool
- Software tool for digital asset management
- Digital twin. 2D and 3D viewers with measurement, query, and analysis tools
- Georeferenced information with support for all types of standard files: High resolution images, 4K video, thermography, LiDAR point clouds, CAD files, pdf, 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
- Customised reporting possible
Power Line Inspection
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 us to obtain a detailed 3D model in which to locate the non-compliances in the safety distance to the ground, buildings, 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 treatment of the point cloud to obtain the digital terrain model (TDM) and the digital vegetation model (DTM)
- Regulatory distance defects (3D LIDAR)
Thermography
Hot spot anomalies.
Our inspectors , due to their long experience, assess the severity of the hot spot during the flight, notifying, if necessary, the maintenance personnel of the electricity company.
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 personnel in power lines is important for the recognition of all their elements and characteristics.
Experience and Advantages
We have been working for the electricity companies for years and there are already many kilometres inspected.
- Delivery of works in open and easy-to-use formats
- Great experience and qualification of our inspectors
We have an R+D+i Department to continue advancing in artificial intelligence and improve the times, quality and costs of the service.

Railways
SIA Advanced Inspection.

Digitalization
We transform physical reality into digital reality for its modelling, parameterisation and incorporation into:
- Digital Twin Creation of Infrastructure
- Processing and processing of mass information
Gauges
- Analysis of interferences, collisions, impact zones in tunnels, overpasses
- Static and dynamic gauge analysis
Track parameterization
- Measurement of the existing track and adjustment of the best route to the existing track
- Adaptation to a new layout in accordance with the standard
- Obtaining rips and lifts
- Quality Controls
BIM
- Scanning of infrastructures, buildings and facilities
- BIM - GIS
- 3D Modeling
Catenary
- Vectorization
- Height and runout verification
- Precise thread placement
- High data capture and short lead times
- Accelerating inspections and mitigating errors
- REFOS1 and REFOS2 distances
Vegetation Control
- Predictive Control
- Risk Analysis and Maps
- Optimization of Felling and Pruning Plans
- GIS
- Distance and Invasion Analysis
Cartography, MDT, MDS
- Advanced LIDAR Data Classification
- Plans
- Delineation
Ballast Studies
- Thicknesses
- Degrees of Contamination
- Subsidence zones
Vegetation Risk Management for Infrastructures
We have our own proven methodology for carrying out a vegetation study around power lines, railway lines, which allows, among others, the development of an optimized Pruning and Felling plan taking into account the growth forecast of the different forest species.
Plant Cartography
Reduced costs and inspection time. Demonstrated legal compliance. Possibility of monitoring the implementation of the plan.
- Based on LIDAR data, making polygonal type vector cartography (not tile approximation)
- Identification of species from the forest map of Spain with the images of the LIDAR flight by forestry experts
The multi-return performance of the two LIDARs allows obtaining very good information on the vegetation and ensures that the terrain is identified even with dense forest cover.
- Visualization and recognition
- Point cloud ranking
- Generation of cartography
Modelling vegetation evolution
- Determination of height growths
- Compartmentalization of the territory
- Assigning Growths in Polygons
- Allocation of growth coefficients according to age
- Estimation of growth after pruning and felling
- Detection of hazardous vegetation
- Tree inventories
- Thematic mapping
- Carbon Capture Maps
Growth modeling is done on the full LIDAR point cloud. It is not an approximation.
Felling and pruning plan
- Preparation of an optimized Felling and Pruning plan
- Self-developed model that uses the real geometry of the point cloud obtained by LIDAR
- T&P plan with an economic budget

Mining and other infrastructure
The use of LIDAR systems in mining with inertial GPS positioning has improved the accuracy and quality of the 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 dumps
- Control of machinery and installations
- Environmental control
- Prevention of occupational risks
The use of LIDAR systems in civil works supervision
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The use of LIDAR systems in civil works supervision. Applications under construction: Dynamically updating 3D models allows.
- Monitoring of work progress compared to planned (earthworks, construction of trenches, walls, necessary accesses for machinery, places for material collection, etc.)
- Monitoring of resources located in the field
- Logistics Process Planning
- Partial certifications of work and final certification of the same

