Figure 2 shows that there are four risks with the highest RS value, namely, RP-001, RP-002, RM-001 and RM-002. The same risks were classified as E in the original risk register. Based on the profile of the RS Pareto chart, a critical value (i.e., threshold) was selected to identify the risks that are most critical to the project. There is no systematic procedure to specify such criteria, as noted by Carbone and Tippett (2004). The authors stressed that the selected criterion will be used only as a starting point for classifying project risks. Based on the profile of the RS values shown in the Pareto chart for Project A (Figure 2), the maximum risk score was almost twice the risk in the study by Carbone and Tippett (2004), in which the threshold was considered to be 20. Thus, a critical value of 40 was selected for the current study.