Ppv Ventilation Attic Fires

Positive pressure ventilation ppv is a valuable fireground tactic but it s also easily misunderstood.

Ppv ventilation attic fires.

A direct action on the fire to affect its behavior and reduce its size. This will prevent the clear environment below the ceiling from rapidly filling with smoke. 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. Attic fires isolated attic fires can benefit from ppv.

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. 3 main ppv tactics exist according to fire situations. 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.

However this tactic also provides additional oxygen to the fire and can increase the rate of heat and energy being released. For it to work there must be an opening.