2. Ventilation

Question 1

Ventilation does not equal ____ as previously thought.

Answer 1

cooling

Question 2

What two primary assumptions caused the theory that ventilation equalled cooling?

Answer 2

1) When vertical ventilation is performed we see a lift of the neutral plane
2) When ventilation takes place firefighters inside the building feel the environment or ambient temperature seem to cool because of the influx fresh air or the flow of outside air into the building.

Question 3

The fire ____ if you provide a ventilation opening.

Answer 3

gets bigger

Question 4

The ____ are the primary cause of the accelerated heat release rate in modern structure fires.

Answer 4

modern interior furnishings

Question 5

Ventilation must be ____

Answer 5

coordinated with fire attack

Question 6

If a fire has not already vented itself and you create an opening, you have approximately ____, on average, to get water on the fire before flashover could occur.

Answer 6

100 seconds

Question 7

The fire attack crew entrance is ____

Answer 7

a ventilation opening

Question 8

If the fire has self vented out a window, ____

Answer 8

put water on it from the outside.

Question 9

During initial vent-enter-isolate-search (VEIS) operations, don’t ____

Answer 9

break the glass with the ladder

Question 10

The goal of all ventilation is ____

Answer 10

to control the building and make the building behave the way you need it to.

Question 11

Controlling the door keeps the fire ____

Answer 11

in a ventilation limited state, and that is exactly where we want it until we are ready.

Question 12

A door control firefighter can be kept on the interior or exterior of the door, but in training the author found ____ worked better to improve ____.

Answer 12

• that the firefighter on the interior

* communications with the fire attack crew.

Question 13

Placing ____ can help guide interior firefighters back to the entry point when the entry door is closed.

Answer 13

a flashlight

Question 14

As an interior firefighter, it is a good idea to ____ as you progress toward the fire to reduce flow paths and fire spread.

Answer 14

close doors

Question 15

Smoke, or the fire gases in smoke, burn and will burn us if we cannot ____. If we cannot vent this fuel before it flashes over because of roof construction or a lack of staffing, then we will have to ____

Answer 15

• provide a ventilation opening to get them out of the building.
• eliminate the heat leg of the fire triangle by directing a stream overhead. Forget penciling, keep the nozzle flowing as you advance until its stream reaches the seat of the fire, which is producing the flammable smoke and gases.

Question 16

When venting for fire, ____ before the team takes out windows.

Answer 16

the water must be applied to the fire

Question 17

Once water is applied to the main body of fire, take out the windows ____ first and then ____

Answer 17

• in the fire room

* work back

Question 18

Any hole in the building from the outside in or inside out is ____

Answer 18

ventilation

Question 19

Any breach in the integrity of a compartment that will allow smoke, heat, and gases out of a space and fresh air into the same space is ____

Answer 19

ventilation

Question 20

Fire should be kept ____ as long as possible. We do this by identifying ____ and trying to control ____.

Answer 20

• in the ventilation limited stage
• the openings or places where the fire is receiving its oxygen
• those openings

Question 21

The fire containment ability of interior doors durning a well ventilated compartment fire is approximately ____

Answer 21

5 minutes

Question 22

Doors evaluated during testing found that ____ had no noticeable impact on failure time. The failure time was dictated solely by ____.

Answer 22

• the type of wood

* the thickness of the door