Developing a barrier management framework for dealing with Natech domino effects and increasing chemical cluster resilience
Tao Zeng (Guangdong Provincial Science and Technology Collaborative Innovation Center for Work Safety, Katholieke Universiteit Leuven, South China University of Technology)
Guohua Chen (South China University of Technology, Guangdong Provincial Science and Technology Collaborative Innovation Center for Work Safety)
Genserik Reniers (Katholieke Universiteit Leuven, TU Delft - Safety and Security Science, Universiteit Antwerpen)
Jinkun Men (South China University of Technology, Guangdong Provincial Science and Technology Collaborative Innovation Center for Work Safety)
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Abstract
A domino effect triggered by a natural event (a so-called Natech domino effect) represents a typical high-impact low-probability (HILP) event, which may lead to catastrophic consequences. The presence of safety barriers could have an impact on the effects by impeding propagation patterns and mitigating potential consequences. However, coordinating and maintaining safety measures to establish an effective barrier system against Natech domino effects is complicated. In this paper, the concept of what constitutes a safety barrier and the principles of barrier management are reviewed. Subsequently, the complex phenomenon of Natech domino effects is studied at the individual installation level, while the propagation pattern is explored at the system level. The application of safety barriers is discussed with the aim of coping with potential Natech domino effects. A systematic framework of barrier management is developed to establish and improve the barrier system in the whole cycle (design & construction, operation, accident, recovery & improvement) of a chemical industrial area. The challenges are discussed to highlight future study needs.