bandeau site web us 956x265px

The physics of Forced Ventilation

Scientific studies of force ventilation by the National Institute of Standards and Technology (NIST) document the “Physics” of fire ground ventilation.

The Physics of Forced Ventilation

Numerous studies have proven that proper venting of contaminants from a fire structure can be lifesaving for victims and fire fighters. Studying these findings in combination offer an understanding of how ventilation works and what it can do for firefighters.

Scientific studies of forced ventilation by the National Institute of Standards and Technology (NIST) document the “Physics” of fire ground ventilation.

Numerous studies have proven that proper venting of contaminants from a fire structure can be lifesaving for victims and fire fighters. Studying these findings in combination offer an understanding of how ventilation works and what it can do for firefighters.

Why, When, Where, and How do we ventilate? What can go wrong using forced ventilation?

The perception is that Positive Pressure Ventilation (PPV) can be dangerous !

This perception is reality without training and a complete understanding of what to expect when using forced ventilation – especially for fire attack.

We will review how fire evolves, methods of ventilation, and why and how we ventilate.

Basic “Fire Triangle” science will be used to learn how ventilation affects the fire environment.

Discussion will be held concerning the “Air Track”. Air Pressure vs. Fire Energy will be explained.

You will learn Why, When, Where, and How to use forced ventilation – and when not to !


What will you learn?

The basic “physics” of natural fire progression and “What would happen if the fire department never showed up !


The types & physics of ventilation including : Natural, Traditional or Mechanical, Forced PPV and Positive Pressure Attack.


Review of the latest NIST findings concerning PPV, wind driven fires and how PPV is used to “pressurize” stairwells and corridors.

The Mechanics of PPV and PPA: “How do you set it up?” and “How does it work?”

The latest technology of Straight Air Stream Entrainment Ventilators as compared to conventional “cone of air” methods.

View videos of live fire attack using PPA on single-family residences and larger structure fires including high-rise.
Several live fire and smoke scenarios and how to use the equipment.(if scheduled)
Working with the latest technology of gas and electric PPV fans.

What part the large truck or trailer mounted fans play in the ventilation of larger “big box” stores, manufacturing, parking decks, airports, and the pressurization of high rise stairwells.


How to determine if you’re having a successful PPV operation ?


How to perform PPA with a three or four-man engine crew ?


Typical program schedule

8:00 to 8:30        AM ?     Coffee and Registration
8:30 to 9:30        AM      First Class Room Session
9:30 to 9:45        AM      Break
9:45 to 10:45      AM     Second Class Room Session
10:45 to 11:00   AM      Break
11:00 to Noon              Third Class Room Session
Noon to 1:30      PM     Lunch break. Sometimes a class room session(s) will run overtime due to questions and we catch up at
1:30PM to 4:30  PM     Live demos


Needed for the Classroom

Power Point Projector with video and sound capabilities.


Different color markers and white board, not obscured by the Power Point projector. (In absence of white board, poster board and easel will work.)


For outside demos

Live fire facilities OR

Smoke machine and fluid and building(s) for demos

We furnish LEADER ventilators – and a KO Fire Curtain, (foam where requested) but you are welcome to provide equipment you currently use, too.

Please invite neighboring fire departments to send ranking officers to the program.
The number of participants is limited only by the size of the class room.

Call or email if you have questions.