When using positive pressure ventilation, when should smoke ejectors be prepared?

When utilizing positive pressure ventilation, smoke ejectors should be prepared when hose lines are in position and charged. This timing is essential because it ensures that firefighting personnel are ready to tackle any remaining fire conditions while simultaneously enhancing safety for both them and victims inside the structure. Having hose lines charged means that water is readily available to combat the fire, which is critical as positive pressure ventilation can stir up embers and flames, possibly leading to re-ignition.

As flames and heat are removed from the building through ventilation, the charged hose lines provide a means to control any fire activity that might flare up unexpectedly. This strategic preparation helps create a coordinated approach to firefighting operations, improving overall safety and efficiency.

Additional points regarding other options: It is essential to ensure that the building is fully evacuated before initiating ventilation strategies to protect occupants and responders. Preparing smoke ejectors before the fire is extinguished could introduce more danger, as it might assist in spreading the fire's heat and sparks. Waiting until a haze has cleared may delay crucial moments in firefighting, affecting the overall effectiveness of the response.