Interdependency of construction safety hazards from a network perspective: a mechanical installation case

Abstract

The assumption that safety hazards in construction projects are independent leads to a weak foundation for risk assessments, and related management strategies may be biased. Therefore, understanding interdependencies of hazards is critical to risk assessment in construction safety. This study proposed a qualitative–quantitative hybrid approach to delineating hazard associations. Based on the hazard network model for an elevator installation, we identified the characteristics of the hazard network and determined critical hazard types based on the hazard associations. The main conclusions are: (a) the hazard network topology is characterized by an extremely sparse hazard association distribution, few centers and highly cohesive interrelationships; (b) management should focus on various hazard mitigation strategies rather than relying on causal relationships; (c) ‘wrong sequence’ due to human error is the most critical ‘gatekeeper’ for the various hazards. Our findings contribute to the body of knowledge by revealing characteristics of hazard interdependencies.

Keywords:

• safety
• risk assessment
• hazard association
• human reliability
• social network

Acknowledgements

The authors are grateful for the input from the practitioners who participated in this research.

Disclosure statement

No potential conflict of interest was reported by the authors.

ORCID

Pin-Chao Liao http://orcid.org/0000-0001-6927-9204

Tao Wang http://orcid.org/0000-0002-8367-8946

Additional information

Funding

This work was supported by the Natural Science Foundation of China [grant number 51578317 ], [grant number 71401191].