Risk Reduction A fire safety engineering analysis was undertaken by EFT Consulting to compare the risk levels associated with each option when compared to an NCC DtS building and the results are shown in Table 22. It should be acknowledged that the small difference in risk between options is a result of the degree of system coverage. Table 22: Comparative risk levels per specification Specification Risk Level Fatalities per Reduction in Risk 1000 Fire Starts Level (Percentage) Current NCC DtS 3.9 x 10-6 3.9 - Solution FPAA 101D Sprinkler 1.3 x 10-6 1.3 67% System Design and Installation Domestic – Water Supply FPAA 101H Sprinkler 1.1 x 10-6 1.1 72% System Design and Installation Hydrant – Water Supply AS 2118.1 Sprinkler 1.1 x 10 1.1 72% System Design and Installation As demonstrated by the fire engineering analysis, the effectiveness of sprinklers in reducing fatalities within sole-occupancy units is estimated to range from 67% and 72% depending on the adopted system. In this regard, all options demonstrate a high degree of effectiveness in reducing the current rate of fatality when compared with the current DtS Provisions. Estimated Benefits The NCIS identify an average of 2.9 deaths per year between 2000 and 2015 totalling 46 fatalities, where the deceased died as a result of a fire in a multi-storey residential building. The number of fatalities by building height is shown in Table 23. Table 23: Fire-related fatalities (2000-2015) in multi-storey buildings by number of storeys Number of Storeys Fatalities 2 23 3 3 7 2 Unknown* 18
Risk Reduction A fire safety engineering analysis was undertaken by EFT Consulting to compare the risk levels associated with each option when compared to an NCC DtS building and the results are shown in Table 22. It should be acknowledged that the small difference in risk between options is a result of the degree of system coverage. Table 22: Comparative risk levels per specification Specification Risk Level Fatalities per 1000 Fire Starts Reduction in Risk Level (Percentage) Current NCC DtS Solution 3.9 x 10-6 3.9 - FPAA 101D Sprinkler System Design and Installation – Domestic Water Supply 1.3 x 10-6 1.3 67% FPAA 101H Sprinkler System Design and Installation – Hydrant Water Supply 1.1 x 10-6 1.1 72% AS 2118.1 Sprinkler System Design and Installation 1.1 x 10 1.1 72% As demonstrated by the fire engineering analysis, the effectiveness of sprinklers in reducing fatalities within sole-occupancy units is estimated to range from 67% and 72% depending on the adopted system. In this regard, all options demonstrate a high degree of effectiveness in reducing the current rate of fatality when compared with the current DtS Provisions. Estimated Benefits The NCIS identify an average of 2.9 deaths per year between 2000 and 2015 totalling 46 fatalities, where the deceased died as a result of a fire in a multi-storey residential building. The number of fatalities by building height is shown in Table 23. Table 23: Fire-related fatalities (2000-2015) in multi-storey buildings by number of storeys Number of Storeys Fatalities 2 23 3 3 7 2 Unknown* 18
fire_safety_in_new_class_2_and_class_3_residential_buildings_consultation_ris.docx