Which visual tool is most closely associated with mapping hazard pathways, barriers, and safeguards?

• A. Fishbone diagram
• B. SWOT analysis
• C. Bow-Tie analysis
• D. Fault tree analysis

Answer: (C)

Bow-Tie analysis is the most fitting because it visually links a hazard to its potential consequences while clearly showing where barriers and safeguards intervene along the way. On the left, it lays out the threats and initiating events that could lead to the hazard, and on the right it maps the possible consequences. The central top event anchors the diagram, with preventive barriers placed on the left to stop causes from reaching the hazard, and mitigative barriers on the right to limit consequences if the hazard occurs. This structure makes it easy to see who is responsible for each control, where defenses are redundant, and where gaps in protection exist.

Other tools serve different purposes. A fishbone diagram focuses on identifying root causes of a problem but doesn’t systematically map how a hazard progresses to outcomes or where safeguards lie. SWOT analysis is about strategic strengths, weaknesses, opportunities, and threats rather than detailing risk pathways and controls. Fault tree analysis explores logical combinations of failures leading to a top event using gates, but it emphasizes probabilities and failure paths rather than illustrating protective barriers and safeguards along the hazard-to-consequence chain.