According to NFPA technical reports, what are the three primary factors at structural incidents that cause firefighter injuries and deaths?

According to NFPA technical reports, what are the three primary factors at structural incidents that cause firefighter injuries and deaths?

• A. It falls on you; You fall into it; Flashover
• B. Collapse of the building; Smoke inhalation; Heat
• C. Electrical hazards; Falls; Entrapment
• D. Poor visibility; Fatigue; Weather

Answer: (B)

NFPA’s analysis of firefighter fatalities at structural incidents shows three factors dominate: building collapse, smoke inhalation, and extreme heat. Each of these drives severe outcomes on its own and often interacts with the others—collapse can trap crews, smoke inhalation occurs in environments with limited ventilation and toxic gases, and heat both harms the body and weakens structural elements, increasing collapse risk. These are the factors NFPA consistently identifies as the primary causes of injuries and deaths in structural fires, whereas options emphasizing falls, electrical hazards, poor visibility, fatigue, or weather describe important safety concerns but not the main causal factors highlighted in the reports.

NFPA’s analysis of firefighter fatalities at structural incidents shows three factors dominate: building collapse, smoke inhalation, and extreme heat. Each of these drives severe outcomes on its own and often interacts with the others—collapse can trap crews, smoke inhalation occurs in environments with limited ventilation and toxic gases, and heat both harms the body and weakens structural elements, increasing collapse risk.

These are the factors NFPA consistently identifies as the primary causes of injuries and deaths in structural fires, whereas options emphasizing falls, electrical hazards, poor visibility, fatigue, or weather describe important safety concerns but not the main causal factors highlighted in the reports.