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Australian Fire Engineering Guidelines abcb.gov.au Page 138 The FBIM relies on the systematic utilisation of up to 16 modules (flow-charts) to calculate the total time required for the fire service to undertake its activities. Each module represents a distinct component of fire service intervention. Many fire service actions are undertaken concurrently and the total time to complete fire service intervention is not necessarily the successive addition of individual task activity times. Each fire safety analysis will individually determine how many flow charts are required to quantify the necessary fire service actions. A.6.1.1 The basic FBIM strategy The FBIM analysis initially requires an output from Sub-system A. The elapsed time from start of fire until the fire service is notified. A typical calculation would include the time taken for a smoke detector to operate plus any delay associated with an alarm verification process or third party monitoring the fire alarm system. The fire service will then usually dispatch a predetermined number of fire fighters and vehicles to the fire location. Dispatch times, travel times and initial set up time ‘kerb- side’ (e.g. donning breathing apparatus and gathering basic safety equipment) can be calculated using the FBIM. At this time, the conditions at the fire scene (provided by Sub-systems A, B, C & D) will determine the appropriate fire service action (e.g. enter a building to check for trapped occupants or determine the need for more fire service resources at the scene). A common fire service tactic is for some firefighters to enter the building, locate and assess the severity of the fire at the same time as other firefighters are deployed to check for trapped occupants in areas close to the fire. The FBIM calculates the time taken for these activities. The possibility of successfully completing these actions will be determined principally by conditions inside the building as predicted by Sub- systems A, B, C and D. These systems will need to be interrogated regularly to check their impact on the FBIM time line. Fire containment or suppression activities may then be attempted to provide additional time for other firefighters to conduct an interior search of the rest of the building. If adequate facilities are provided, suppression activities will significantly |