PSI - Issue 84

Antonio Sannino et al. / Procedia Structural Integrity 84 (2026) 890–897

896

and facilitates immediate adjustments to the inspection as necessary. The ARGO mobile system automates much of the inspection process, utilizing CdA to guide inspectors on which sections of the tunnel to prioritize. The software highlights segments that require attention, allowing inspectors to concentrate on high-risk areas and streamline their workflow. Inspectors can make annotations directly on the 2D models or captured images, documenting any structural issues or areas of concern. These annotations are seamlessly integrated into the inspection reports, ensuring that critical observations are accurately recorded and presented. The tablet used for data collection is equipped with wireless connectivity, allowing it to sync collected data with the central ARGO platform either instantly when a signal is available or as soon as connectivity is restored. ARGO provides a status for each defect, making it essential for effectively tracking and managing tunnel defects throughout its lifecycle. This system ensures traceability by enabling the unique identification of defects, monitoring any modifications, and marking them as “resolved” when local repairs are applied. Once the data is collected in the field, the inspection process continues in the back office, where engineers assess the severity of the identified defects.

Fig. 7. Comparison of the results of two consecutive inspections

Utilizing the high-resolution 3D data gathered from the laser scans, they analyze the defects to determine their impact on the overall structural integrity of the tunnel. This analysis enables engineers to categorize defects based on their severity. After evaluating the data, the system generates a comprehensive final report that outlines the findings, including detailed descriptions of the defects and any service requests identified. 2.5. Maintenance plan Based on the results of visual inspections and inspector’s annotations, ARGO generates maintenance plans that outline the necessary tasks to address both structural and non-structural components, such as lighting systems, ventilation, and safety equipment. One of the critical components of ARGO’s maintenance process is the prioritization of service requests. The inspector evaluates factors such as the severity of the identified issues, their potential impact on tunnel safety and operations. This prioritization ensures that urgent issues are addressed promptly, while less critical tasks are scheduled in a manner that balances operational efficiency with the need to maintain high safety standards. By adopting this structured and data-driven approach, ARGO helps ensure that resources are allocated effectively and that maintenance activities are aligned with the overarching goal of minimizing risk and maintaining service continuity. As mentioned above, thanks to the integration of ARGO with the company's Data Lake, it has been possible to create constantly updated informative dashboards using the Tibco application, drastically increasing the speed of performing targeted analyses and in-depth insights on the data recorded by ARGO. ASPI began adopting Tibco for the management of its tunnels in 2024, in parallel with the roll-out of ARGO Tunnels.