Chapter 5

Sociotechnical Systems, System Safety, Resilience Engineering, and Deeper Accident Analysis


A system approach requires defining the boundaries of the system considered. For a major industrial regulated activity, it means mapping the whole sociotechnical complex of regulator, designer, and operator of an installation. Newly developed system tools are described to identify the scenarios of how a mishap can develop. Crucial is the recognition that different from classical risk analysis, system failure can still evolve although all components function as designed. The defined scenarios imply what risk controls will be required. A new concept is resilience, being capacity to restore with minimum loss after an unforeseen disturbance—hence, ...

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