In a hoistway fire, what is the primary hazard?

In a hoistway fire, what is the primary hazard?

• A. Smoke
• B. Heat
• C. Water
• D. Toxic gas

Answer: (A)

Smoke is the primary hazard in a hoistway fire because the shaft acts like a chimney, drawing hot smoke and combustion products upward and quickly filling the elevator car, hoistway, pit, and nearby areas. Inhalation of smoke presents the most immediate danger to anyone inside or around the shaft, causing disorientation and respiratory injury long before flames heat up surrounding spaces. Smoke also reduces visibility, complicating evacuation and rescue operations. While heat, water, and toxic gases matter in a fire, the rapid spread of smoke and its inhalation hazards make it the dominant danger in the hoistway.

Smoke is the primary hazard in a hoistway fire because the shaft acts like a chimney, drawing hot smoke and combustion products upward and quickly filling the elevator car, hoistway, pit, and nearby areas. Inhalation of smoke presents the most immediate danger to anyone inside or around the shaft, causing disorientation and respiratory injury long before flames heat up surrounding spaces. Smoke also reduces visibility, complicating evacuation and rescue operations. While heat, water, and toxic gases matter in a fire, the rapid spread of smoke and its inhalation hazards make it the dominant danger in the hoistway.