Risk Management and Risk-Benefit Analysis
Domain 3 tests risk management and risk-benefit analysis: how the ISO decides whether a tactical action is worth its potential cost. The exam expects a structured risk decision, not a slogan.
Core rules
- NFPA 1500 requires a risk management plan that identifies, evaluates, and controls risk. At an incident, the ISO evaluates hazard, probability, severity, and benefit.
- Apply risk-benefit: high risk is justified only for a savable life; low risk for defensible property; no risk when there is no savable life or property. The decision must be based on evidence, not momentum.
- Consider likelihood and consequence: collapse indicators, fire behavior, occupant survivability, crew experience, and time. Unacceptable risk must be eliminated or reduced before operations continue.
- The ISO advises the IC and can suspend unsafe activity. Risk decisions should be communicated, acknowledged, and documented.
Worked example
A vacant, fully involved building has fire through the roof and no reports of occupants. A crew wants an interior attack to protect an adjacent wall. The ISO compares: savable life = none; property benefit = limited; risk = high collapse and flashover. The ISO recommends defensive operations, and the IC accepts. The exposure wall is protected from outside.
Traps
Using 'risk a lot to save a lot' without defining savable life; treating property as equal to life; ignoring probability; changing risk decisions without new information; failing to record the rationale.