Ppv Ventilation Attic Fires

For it to work there must be an opening.

Ppv ventilation attic fires. Attic fires isolated attic fires can benefit from ppv. This will prevent the clear environment below the ceiling from rapidly filling with smoke. Positive pressure ventilation ppv is a valuable fireground tactic but it s also easily misunderstood. 3 main ppv tactics exist according to fire situations.

During initial attack fire crews should use small openings in the ceiling for water application. As operations continue you might consider using positive pressure ventilation ppv if vent. However this tactic also provides additional oxygen to the fire and can increase the rate of heat and energy being released. As the fire service awaits new ppv research homer robertson reviews ppv basics.

The ppv fan was developed as a post fire ventilation tool meaning that the fire must be completely out before using the fan to ventilate the structure. A direct action on the fire to affect its behavior and reduce its size.