Engine Ops Ch. 4 Fire Scene Operations

Question 1

Actions that the officer of the first arriving engine company can implement to protect endangered occupants include:
“HVAC I”

Answer 1

4.2.3
Hoseline between fire & occupants
Ventilate away from the occupants
Assurances to occupants (verbal instructions)
Close doors
Inform incoming units

Question 2

Locating the fire is the first stage of fire suppression. When the exact location of the fire has been determined it must be conveyed to the other units operating on the scene. What must be relayed to the members stretching the initial hoseline?

Answer 2

4.3.5.

The most direct route to the fire area must be relayed to the members stretching the initial hoseline.

Question 3

What is the second stage of fire supression?

Answer 3

4.4.1
Confining and controlling a fire is the second stage of the fire suppression effort and includes those actions taken to prevent the fire from extending beyond the area already involved. This is generally the immediate concern, and fulfills the role of
placing a hoseline between the fire and the majority of the building occupants.

Question 4

What is the third stage of fire suppression

Answer 4

4.5.1 & 4.5.2
Extinguishment is the third stage in the fire suppression effort. Initial extinguishment includes “knock down” of visible flames and readily apparent burning and smoldering material debris. Final extinguishment means that any fire uncovered by “opening up” and overhauling procedures has been extinguished.

Question 5

The traditional fire development curve follows the stages below.
 Incipient
 Growth
 Fully Developed
 Decay
The progression of modern content fires differs from the traditional fire development curve as follows?

Answer 5

4.6.2 & 4.6.3
 Incipient.
 A rapid growth stage that consumes the available oxygen very quickly.
 Since modern content fires rapidly consume the available oxygen within the fire area, they enter into an earlier oxygen limited Decay stage when
compared to Legacy Fires, and will remain in the Decay Stage if no additional oxygen is added to the fire area.
 If additional oxygen is added to the fire area, a second rapid growth stage may be encountered.
 A second decay stage will occur as the fuel load is depleted or the fire is extinguished.