Positive Pressure Ventilation Flashcards
How does positive pressure ventilation benefit fire operations?
Rapidly removes heat and smoke from building.
Causes an improved atmosphere, therefore improving patient survivability.
Improves firefighter ability to conduct search, rescue, and loss control operations.
Improved atmosphere reduces heat stress on firefighters.
Reduces loss caused by smoke and fire damage.
Reduces the need and risk of vertical ventilation.
Which apparatus are equipped with high volume PPV fans?
All ladder companies.
What type of fire operations qualify for early PPV?
All offensive fire operations.
Where should PPV fans be placed?
At the point of entry(s) from the unburied side of the fire.
How many feet away from the entry point should PPV fans be placed?
12-15 feet back, creating a “cone” effect around the door and allowing access for crews to enter.
How should PPV fans be placed when more than one is required?
In tandem, one behind the other is more effective than side by side.
What are the two tactical considerations when applying PPV?
- An exit for the air to escape (ie a window or door).
2. PPV must be injected from the unburned side of the fire.
What should be used to direct airflow from PPV on multi-story/high rise fires?
Stairwells.
When could PPV be used for exposure control.
Buildings with common attics or where separating walls have been breached.
When using PPV for exposure control, where should the fan be placed first?
At the most severe exposure. Then the second most critical exposure and so on. Fire occupancy would be last.
