• The 5x5 matrix is used to score safety risks. Safety risk scoring is based on the likelihood and impact of the safety risk occurring.

      IMPACT
    LIKELIHOOD   Very Low Low Medium High Very High
    Almost certain 5 10 15 20 25
    Likely 4 8 12 16 20
    Possible 3 6 9 12 15
    Unlikely 2 4 6 8 10
    Rare 1 2 3 4 5