Ppv Ventilation Attic Fires

As operations continue you might consider using positive pressure ventilation ppv if vent.

Ppv ventilation attic fires.

During initial attack fire crews should use small openings in the ceiling for water application. Attic fires isolated attic fires can benefit from ppv. As the fire service awaits new ppv research homer robertson reviews ppv basics. Moving from one room to another and punching the nozzle through the ceiling and.

However this tactic also provides additional oxygen to the fire and can increase the rate of heat and energy being released. Positive pressure ventilation ppv is a valuable fireground tactic but it s also easily misunderstood. For it to work there must be an opening. This will prevent the clear environment below the ceiling from rapidly filling with smoke.

This pressurization or positive pressure ventilation ppv tactic can assist in the venting of smoke and high temperature combustion products and make attacking the fire easier than without ppv. 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.