When can positive-pressure ventilation (PPV) fans be operated?

Positive-pressure ventilation (PPV) fans must be operated only with the permission of the incident commander to ensure the safety and coordination of the firefighting operation. The incident commander has the overall responsibility for the scene and is tasked with making informed decisions based on the current conditions, the location of the fire, the presence of occupants, and other tactical considerations.

Using PPV incorrectly or without proper authorization could compromise the effectiveness of firefighting efforts, potentially endangering both firefighters and any civilians involved. The incident commander assesses the situation and can provide guidance on the best time and manner for deploying PPV to maximize its effectiveness while minimizing risks.

This hierarchical approach allows for centralized decision-making and ensures that all members of the firefighting team are working under a coordinated strategy. Thus, operating PPV fans without this specific approval would undermine the established protocols and may lead to unsafe conditions.