SEVERITY (score 1 to 6) Major Major Risk = Multiple Single Minor Trivial Injury to Injury to Severity v Likelihood Deaths Death Injury Injury Group Individual (6) (5) (4) (3) (2) (1) 36 30 24 18 12 6 Almost Certain (6) Very Likely (5) 30 25 20 15 10 5 6) Likely (4) 24 20 16 12 8 4 to 1 Possible (3) 18 15 12 9 6 3 Unlikely (2) 12 10 8 6 4 2 LIKELIHOOD (score Most Unlikely (1) 6 5 4 3 2 1 The matrix can be used to provide an initial breakdown of hazards into three categories as follows: Risk score of 1-5 - Classified as LOW RISK: Fine tune control measures or keep under review Risk score of 6-12 - Classified as MEDIUM RISK: Control measures to be implemented and improved Risk score of 15-36 - Classified as HIGH RISK: Consider stopping activity until control measures are introduced
Risk = Severity v Likelihood SEVERITY (score 1 to 6) Multiple Deaths Single Death Major Injury to Group Major Injury to Individual Minor Injury Trivial Injury (6) (5) (4) (3) (2) (1) LIKELIHOOD (score 1 to 6) Almost Certain (6) 36 30 24 18 12 6 Very Likely (5) 30 25 20 15 10 5 Likely (4) 24 20 16 12 8 4 Possible (3) 18 15 12 9 6 3 Unlikely (2) 12 10 8 6 4 2 Most Unlikely (1) 6 5 4 3 2 1 The matrix can be used to provide an initial breakdown of hazards into three categories as follows: Risk score of 1-5 - Classified as LOW RISK: Fine tune control measures or keep under review Risk score of 6-12 - Classified as MEDIUM RISK: Control measures to be implemented and improved Risk score of 15-36 - Classified as HIGH RISK: Consider stopping activity until control measures are introduced
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