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.
Ppv ventilation attic fires.
This will prevent the clear environment below the ceiling from rapidly filling with smoke.
During initial attack fire crews should use small openings in the ceiling for water application.
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.
Attic fires isolated attic fires can benefit from ppv.
As the fire service awaits new ppv research homer robertson reviews ppv basics.
As operations continue you might consider using positive pressure ventilation ppv if vent.
Moving from one room to another and punching the nozzle through the ceiling and.
A direct action on the fire to affect its behavior and reduce its size.
3 main ppv tactics exist according to fire situations.
Positive pressure ventilation ppv is a valuable fireground tactic but it s also easily misunderstood.