A Systems Theoretic Approach to Safety Engineering ∗

  title={A Systems Theoretic Approach to Safety Engineering ∗},
  author={Nancy Leveson and Mirna Daouk and Nicolas Dulac and Karen Marais},
A model or set of assumptions about how accidents occur lies at the foundation of all accident prevention and investigation efforts. Traditionally, accidents have been viewed as resulting from a chain of events, each directly related to its “causal” event or events. The event(s) at the beginning of the chain is labelled the root cause. Event-chain models, however, are limited in their ability to handle new or increasingly important factors in engineering: system accidents (arising from… CONTINUE READING
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