Use the risk matrix in Table 1-14 to determine the risk level for the Bhopal incident. Estimate the severity category, the safety severity level, the likelihood, and the risk level.

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Table 1-14 Risk Matrix for Semi-Quantitative Classification of Incidents Risk Matrix 1. Select the severity from the highest box in either of columns 1, 2, or 3. Read the Category and Safety Severity Level from the same row. S e V e 11 t 2. Select the likelihood from columns 4 through 7. TMEF: Target mitigated event frequency (yr-1). 3. Read the Risk Level from the intersection of the severity row and the likelihood column. TQ: Threshold quantity-see Table 1-15. 1 Human health impact 3 Se Safe ve ty Fire, Chrit seve explosi emi yrity level 2 Recordable injury on cal direct imp c cost ($) act a e Public fatality possible, x tro TM employee $10 TQ|ph|EF = 10 fatalities million likely Greater 2 Ca 4 than 20 tas Employee $19 Ve 3 fatality million to ry possible, to 100 years Risk level B Risk level C Negligible risk 7 IMPROBABLE, BUT NOT IMPOSSIBLE Not expected to happen anywhere in the division over the life of the plant > 1000 years Risk level C Risk level D Negligible risk Risk level A: Unacceptable risk; additional safeguards must be implemented immediately. Risk level B: Undesirable risk; additional safeguards must be implemented within 3 months. Risk level C: Acceptable risk, but only if existing safeguards reduces the risk to as low as reasonably practicable (ALARP) levels. Risk level D: Acceptable risk, no additional safeguards required.