https://doi.org/10.24928/2023/0141

Safety-I and Safety-II: Contributions of Uas Safety Monitoring on Construction Sites

Roseneia Rodrigues Santos de Melo¹ & Dayana Bastos Costa²

¹ Postdoctoral Researcher, Department of Structural and Construction Engineering, School of Engineering, Federal University of Bahia, Brazil, [email protected] orcid.org/0000-0001-9171-7274
²Associate Professor, Department of Structural and Construction Engineering, School of Engineering, Federal University of Bahia, Brazil, [email protected]. orcid.org/0000-0002-1457-6401

Abstract

Unmanned Aerial Systems (UASs) have been incorporated into safety management systems to facilitate hazard identification and propose corrective actions on time, meaning practices related to the Safety-I approach. However, its impacts on understanding and dealing with everyday operations in front of adverse conditions, meaning Safety-II practices, are still unknown. Thus, this study investigates the contribution of safety monitoring using UAS to support Safety-I and Safety-II practices in everyday operations. Two case studies in construction projects were conducted, involving the following steps: (a) proposition of UAS monitoring protocol integrated into safety management routines; (b) field tests to monitor safety performance using UASs; (c) data analysis considering Safety-I, Safety-II and Resilience Engineering. As a main result, resilience mechanisms were identified, such as adaptation in the lifeline safety systems, use of photos and videos to improve workers’ awareness, and collaborative work between frontline workers. Regarding the Safety-I approach, most of the identified non-conformities were classified as precarious structures on the construction sites, failures in the Personal Protection Equipment (PPE) use, and safety barriers. The perceived limitations emphasized the difficulty in promoting corrective actions due to the lack of flexibility in the constructive processes, availability of resources timely, and absence of slack.

Keywords

Construction sites, safety management, resilience engineering, and digital technologies.

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Reference

Melo, R. R. S. & Costa, D. B. 2023. Safety-I and Safety-II: Contributions of Uas Safety Monitoring on Construction Sites, Proceedings of the 31st Annual Conference of the International Group for Lean Construction (IGLC31) , 377-386. doi.org/10.24928/2023/0141

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