What would happen if an enabling condition is removed from a risk calculation?

When an enabling condition is removed from a risk calculation, the calculated risk would likely decrease. Enabling conditions are factors that make it possible for a specific hazard scenario to occur. They act as facilitators for the sequence of events leading to an incident or risk.

By removing an enabling condition, you effectively reduce the likelihood that the hazardous scenario can unfold, leading to a lower overall risk estimate. For example, if a specific operational procedure that is necessary for a dangerous reaction to take place is eliminated, the potential for that reaction occurring diminishes, thereby reducing the calculated risk. This concept aligns with the principles of Layer of Protection Analysis, where the presence or absence of barriers and enabling conditions directly influences the risk evaluation outcomes.

The other options do not accurately reflect the relationship between enabling conditions and risk calculations. The scenario cannot remain unchanged because the elimination of an enabling condition inherently alters the likelihood of the scenario’s occurrence. Furthermore, stating that risk would increase or that the assessment would be more accurate does not align with the principle that removing an enabling condition tends to lower risk, not raise it or make it more complex.