Minimal cut sets can be obtained directly from the given structure function. Each of nine addend of the above function represents one minimal cut set, i.e. a group (combination) of basic events that directly lead to the top event (infection spreading, in our case study). The basic events and their Boolean variables are given in Table 2.
4.2. Quantitative analysis
In order to conduct a quantitative analysis, probabilities of identified basic events were estimated. Since a database with evi- dence of those particular failures, errors and violations during the infectious medical waste management processes does not exist in the Clinical Centre of Serbia, the probabilities were estimated based on experts' evaluation. The experts included in probabilities