Modelled Impact Time (MOI) is a type of Local modelling project. They model the time it takes for an Asset of Interest to be impacted by fire under various weather scenarios. They incorporate your chosen inputs (ignition locations, asset of interest location, weather scenarios) and use Phoenix RapidFire to show the likely length of time it takes for ignitions to impact your asset (impact time). The impact time can be the time it takes for the ember attack, the time of direct flame, or the minimum of both ember attack or flame. The RMP produces multiple fire runs from the modelled ignitions for each weather scenario. It converts them into a geospatial view that shows the ignition points with their associated likely impact times under the different fire danger rating categories.
Application of MOI project results
MOI projects are critical for fire practitioners and personnel associated with the asset of interest to inform evacuation planning and preparation. While an Asset of Interest can be any location or building, it is particularly relevant for Special Fire Protection Purpose (SFPP) developments (schools, hospitals, and other places with high vulnerability or volatility), event planning, and assessments for future land use development.
Scenarios
There is one type of modelling scenario in a Modelled Impact Time project:
Modelled Scenario (code = MS). The Modelled Scenario assesses the fire risk starting on January 1st for the following year, with or without treatments.
You can modify the scenario date using the date picker in a run’s settings.
Runs
Modelled Impact Time projects only have Fire Behaviour runs. There are no Impact Analysis runs—it does not take into account other assets.
Inputs and configurations
Modelled Impact Time projects have the following required inputs and configurations that you need to add at during setup:
Asset of Interest
Ignitions
Weather Streams
Once you complete setup, the RMP automatically creates the first Modelled Scenario run using defaults for all other inputs and configurations. You can override all inputs and configurations.
You cannot configure Fire Danger Ratings (FDR).
Outputs
MOI projects have similar Fire Behaviour outputs as other modelling projects, with the following additional geospatial outputs:
Minimum hour burnt
Minimum hour spot
Minimum hour of both burnt and spot
For a complete list, see Modelling outputs.
Running and managing your project
Different project types have shared tasks and features. For information on how to run and manage your project, see Common tasks and features.