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Full-Text Articles in Risk Analysis
Observability-In-Depth: An Essential Complement To The Defense-In-Depth Safety Strategy In The Nuclear Industry, Francesca Favaro, Joseph Saleh
Observability-In-Depth: An Essential Complement To The Defense-In-Depth Safety Strategy In The Nuclear Industry, Francesca Favaro, Joseph Saleh
Faculty Publications
Defense-in-depth is a fundamental safety principle for the design and operation of nuclear power plants. Despite its general appeal, defense-in-depth is not without its drawbacks, which include its potential for concealing the occurrence of hazardous states in a system, and more generally rendering the latter more opaque for its operators and managers, thus resulting in safety blind spots. This in turn translates into a shrinking of the time window available for operators to identify an unfolding hazardous condition or situation and intervene to abate it. To prevent this drawback from materializing, we propose in this work a novel safety principle …
Towards The Development Of The Observability-In-Depth Safety Principle In The Nuclear Industry, Francesca Favaro, Joseph Saleh
Towards The Development Of The Observability-In-Depth Safety Principle In The Nuclear Industry, Francesca Favaro, Joseph Saleh
Faculty Publications
No abstract provided.
System Safety Principles: A Multidisciplinary Engineering Perspective, Joseph Saleh, Karen Marais, Francesca Favaro
System Safety Principles: A Multidisciplinary Engineering Perspective, Joseph Saleh, Karen Marais, Francesca Favaro
Faculty Publications
System safety is of particular importance for many industries. Broadly speaking, it refers to the state or objective of striving to sustainably ensure accident prevention through actions on multiple safety levers (technical, organizational, and regulatory). While complementary to risk analysis, it is distinct in one important way: risk analysis is anticipatory rationality examining the possibility of adverse events (or accident scenarios), and the tools of risk analysis support and in some cases quantify various aspects of this analysis effort. The end-objective of risk analysis is to help identify and prioritize risks, inform risk management, and support risk communication. These tools …
Analysis Of Software Contributions To Military Aviation And Drone Mishaps, Veronica Foreman, Francesca Favaro, Joseph Saleh
Analysis Of Software Contributions To Military Aviation And Drone Mishaps, Veronica Foreman, Francesca Favaro, Joseph Saleh
Faculty Publications
Software is assuming an increasing role in the aerospace industry, and by the same token it is also playing an increasing role in many recent incidents and accidents of both military and commercial vehicles. To better understand this role, we examine two case studies from the accident database of the Air Force Accident Investigation Board (AIB). We previously illustrated the limitations of the notion of “software failure” and developed, in its stead, the notion of software contribution to adverse events. We show here how specific operational scenarios, generally unconsidered during the software development and testing, trigger those contributions. We provide …