At what moment does size-up typically begin?

At what moment does size-up typically begin?

• A. Upon dispatch
• B. When dispatched
• C. After arriving on scene
• D. After completing initial actions

Answer: (D)

Size-up is the ongoing assessment of conditions that shapes the incident action plan. It typically begins after you have completed the initial actions that address life safety and scene stabilization, because those steps establish control and safety priorities first. Once those basics are underway or in place, you can step back to gather a broad picture of the situation—fire location and behavior, building construction, hazards, potential for collapse or spread, exposures, occupancy risks, weather and smoke conditions, and available resources. This sequencing keeps life safety and stabilization as the top priorities, while still allowing you to continuously refine strategy as more information becomes available. While you may pick up clues during dispatch and as you arrive, the formal, fuller size-up that informs how you proceed is conducted once initial actions have begun and is updated throughout the incident as conditions change.

Size-up is the ongoing assessment of conditions that shapes the incident action plan. It typically begins after you have completed the initial actions that address life safety and scene stabilization, because those steps establish control and safety priorities first. Once those basics are underway or in place, you can step back to gather a broad picture of the situation—fire location and behavior, building construction, hazards, potential for collapse or spread, exposures, occupancy risks, weather and smoke conditions, and available resources. This sequencing keeps life safety and stabilization as the top priorities, while still allowing you to continuously refine strategy as more information becomes available. While you may pick up clues during dispatch and as you arrive, the formal, fuller size-up that informs how you proceed is conducted once initial actions have begun and is updated throughout the incident as conditions change.