Because of the inherent value of bowtie analysis, regulatory agencies and standards bodies are increasingly embracing this form of risk analysis and presentation.
While most bowtie analysis has been done qualitatively, Kenexis Bowtie is a quantitative analysis tool that digitizes the analysis, integrates with our Fault-tree Analysis Tool (Arbor) and our Process Safety Lifecycle Management System (Vertigo) for work with safeguard probability of failure calculations, and makes the results available for everyone to see even the status of a Safety Function instead locked away in a binder on a shelf.
Bowtie is essentially a simplified fault tree analysis on the left connected to an event tree analysis on the right. Consequently, bowtie diagrams place the hazard of concern at the bowtie knot. Causes and Preventions are positioned to the left side of the knot and Consequences and Safeguards, including safeguards that reduce the magnitude of the consequence, are on the right side of the knot.
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