... On the horizontal axis, the matrix evaluated the degree of impact (in an adjusted interval according to the mean score: almost uncertain 1,00-1,80; unlikely 1,81-2,60; fifty-fifty 2,61-3,40; likely 3,41-4,20; almost certain 4,21-5,00), while the vertical axis, the probability of occurrence was evaluated (in an adjusted interval according to the mean score: negligible 1,00-1,80; minor 1,81-2,60; moderate 2,61-3,40; significant 3,41-4,20; severe 4,21-5,00). The available literature provided three [38,39,42], four [45], or five risk zones [46] for evaluating the risk level, depending on the size of the matrix. For this research, a 5×5 matrix with three risk zones was selected, as recommended by Duijm [42]: High-risk zone, medium-risk zone and low-risk zone. ...