Flashcards in OG 5.23 Ventilation Deck (36)
Today the time from ignition to flashover is __ times faster than legacy homes of the past.
30 times faster
Command should always consider ventilation for what purpose before fire control property conservation?
The rate at which energy is released by the burning of the fuel and oxygen mixture is known as what?
(HRR) Heat Release Rate
A fire in which the HRR or growth of the fire is slowed because the fire is consuming the available oxygen and no new oxygen is entering the fire area is known as what?
Ventilation limited fire
What is the radio terminology used to let the ventilation team know it's an appropriate time to break the selected window?
What side of the house is upwind from the intended ventilation point?
The side of the house that is downwind from the intended ventilation point is called what?
What are the primary responsibilities of the first due truck company on the box alarm?
If a first due truck determines that vertical ventilation is needed for life safety, What do they need to do?
Announced that over the radio so the second truck can change their priorities in route.
What is the suggested tool complement for the "irons firefighter?"
1. Entry set
2. Pick headed axe
3. other forcible entry tool
4. search rope
What is the suggested tool complement for the "hook firefighter?"
1. 6 foot hook
3. Pick headed axe
4. water extinguisher
What is the suggested tool complement for the apparatus operator (AO)?
2. pick headed axe
3. ladder to reach upper floors
What is the suggested tool complement for the outside vent firefighter (OV)?
1. 6' roof hook
2. Pick headed axe
3. second ladder to reach upper floors
Typically, tiller trucks will assign the officer and inside firefighter to what positions?
Inside team duties:
On a tiller truck, the tiller driver will be on the outside team with the apparatus operator and will be assigned to what position?
Outside Vent (OV)
On what three types of trucks will the officer and apparatus officer be assigned the outside team?
1. tower trucks
2. ariel platforms
3. straight ladder trucks
What are the three operational modes for the first arriving truck company?
1. All in for search
2. All out for ventilation
An oxygen deprived fire is usually indicated by what sign?
Heavy Black smoke
What is the best way to control a low-pressure vent point?
All ventilation must be coordinated with what two teams?
If possible, ventilation openings should be placed where in comparison to operating hoselines?
What should never be created behind an advancing hoseline?
Any ventilation opening must be preceded by what?
Verbal Radio communications to coordinate.
What are two signs confirming water is being applied to the fire area prior to ventilating?
Audible indications - hose streams hitting the walls
Dark smoke turning into steam
What are the two types of natural
Horizontal and vertical
What are the three types of forced ventilation?
1. Negative pressure
2. positive pressure
Natural vertical ventilation holes can be placed in what three areas?
When working on lightweight construction buildings firefighters must never ventilate where?
Directly over the fire
What are four smoke conditions we need to be observant about?