Ventilation

Question 1

Fires fought prior to 1970 were fueled primarily by ___materials

Answer 1

Legacy

Question 2

Legacy materials consisted mostly of

Answer 2

Natural fibers and wood products, which produced a cooler fire with lighter colored less flammable smoke

Question 3

Firefighters advancing a hoseline found a more defined ___, with cool air beneath a smoke layer, and a fire that took

Answer 3

Thermal layer, longer to fully develop (flashover)

Question 4

Fires today are fueled predominantly by

Answer 4

Petrochemical based or synthetic products that produce a hotter, darker, blacked smoke

Question 5

The change in basic building contents has made an environment that achieves flashover approximately __faster

Answer 5

30

Question 6

Temperatures rise in buildings due to types of fuels and confined radiant heat, concentrations of poisonous fire gases build, and the building materials and contents confining the fire provide

Answer 6

Fuel for its growth

Question 7

Because of todays fires develop more rapidly, firefighters often arrive on scene just prior to or during

Answer 7

Flashover

Question 8

There is less defined smoke layer due to hotter, more advanced fire and an increase volume of combustible smoke, this creates

Answer 8

Low visibility and high heat environment

Question 9

Vent prior to fire attack will introduce oxygen in an environment that is fuel rich and allowing fire

Answer 9

To grow rapidly

Question 10

___ is responsible for determining strategy and tactics on each working incident

Answer 10

IC or command

Question 11

When considering ventilation, command should consider vent for __ and then for fire co trip and property conservation

Answer 11

Life safety

Question 12

Systematic and coordinated removal of the products of combustion from a structure involved in a fire

Answer 12

Ventilation.

Question 13

The movement of heat and smoke from higher air pressure within the building fire area to all other lows air pressure areas both inside and outside of a structure involved in a fire

Answer 13

Flow path

Question 14

The rate at which energy (heat) is released by the burning of a fuel and oxygen mixture

Answer 14

HRR heat release rate

Question 15

The opening of a window or door in a structure opposite the advancing interior crews for the purpose of allowing heat, smoke and fire gases to escape from the structure into the atmosphere

Answer 15

Coordinated horizontal vent

Question 16

A method of ventilating a structure
by mechanically blowing fresh air into the space in sufficient volume to create a
slight positive pressure within, thereby forcing contaminated air out an exhaust
opening.

Answer 16

Coordinated positive pressure ventilation

Question 17

Opening the roof or existing roof openings for
the purpose of allowing the products of combustions (smoke and heated gases)
to escape into the atmosphere.

Answer 17

Coordinated vertical ventilation

Question 18

The practice of closing doors while conducting a search or during forcible entry prior to initiating firefighting operations. “Controlling the Door”
will isolate the fire area limiting spread to uninvolved areas and eliminating flow
paths that are not part of the ventilation plan.

Answer 18

door control

Question 19

Radio terminology used to let the ventilation team know it is an appropriate time to break the selected window, or for the ventilation team to inform interior crews that they are preparing to break a window. Example: “Truck 2 from Engine 30, we are knocking down the fire. You can take glass on the Bravo/Charlie corner.” “Truck 2 copy, taking glass.”

Answer 19

Take glass

Question 20

The direction that is upwind from the intended ventilation point (door, window, or the selected location for a roof ventilation hole).

Answer 20

windward side

Question 21

The direction that is downwind from the intended ventilation point (door, window, or the selected location for a roof ventilation hole).

Answer 21

Leeward side

Question 22

The primary responsibilities of the first due truck company on a box alarm will
be

Answer 22

Life Safety

Question 23

The primary responsibilities of the second due truck company on a box alarm will be \____

Answer 23

assisting with unfinished first due truck company responsibilities, laddering upper floors for egress, and vertical ventilation if needed

Question 24

Once it is
determined that no rescue problem exists, the need for a second truck will be evaluated by Command. The second truck will be returned in service as ___

Answer 24

soon as practical.

Question 25

Truck company functional assignments will be made by the ____each morning at roll call

Answer 25

company officer

Question 26

Irons Firefighter - Entry set, pick head axe, other forcible entry tool needed specific to the incident, search rope if needed.(inside team)

Answer 26

Irons Firefighter .

Question 27

6 foot hook, TIC (if available), and pick head axe. Consider the need for a water extinguisher. (inside team)

Answer 27

Hook FF

Question 28

(outside team) TIC (if available), pick head axe, appropriate sized ladder to reach upper floor windows for ventilation and egress of civilians and
firefighters.

Answer 28

AO

Question 29

Outside 6 foot roof hook, pick head axe, and a second ladder to reach upper floor windows for ventilation and egress of civilians and
firefighters.

Answer 29

OV FF

Question 30

These are recommended assignments, but actual assignments each day are at the ____, based on crew familiarity and experience levels.

Answer 30

Officer’s discretion

Question 31

Typically tower ladders, aerial platforms, and straight ladder trucks will assign
the two inside Firefighters as the ___ making one the Hook Firefighter
and the other the Irons Firefighter.

Answer 31

inside team

Question 32

. Much like the overall fire ground strategy, ventilation strategy can be ____

Answer 32

offensive, defensive, or a combination of the two

Question 33

It is common for a ventilation opening in a fire building (window, doors, roof openings) to act simultaneously as ___

Answer 33

an inlet for fresh air and an exhaust vent for the products of combustion.

Question 34

Based on varying building configurations and ventilation profiles, there may be ___ flow paths during a structure fire.

Answer 34

several

Question 35

Any open window represents a ____ vent point that will become a flow path if not isolated from the fire area.

Answer 35

low-pressure

Question 36

By practicing ___ firefighters can isolate the fire area and shut off potential flow
paths

Answer 36

door control

Question 37

__- is a measure of the size of the fire compared to the thermal hazard or
effects of the fire.

Answer 37

HRR

Question 38

Providing oxygen to a ventilation limited fire will increase the ___

Answer 38

HRR

Question 39

Increases is the ___ will result in increased heat and smoke production in the fire area and in all flow paths

Answer 39

HRR

Question 40

If possible, openings should be made ____the operating hose line, which will provide a flow path for steam, heat and smoke to exit the
structure ahead of the nozzle team.

Answer 40

opposite

Question 41

Ventilation openings should ___ be created behind an advancing hose line.

Answer 41

never

Question 42

The keys to any type of successful ventilation opening are proper ___ and
proper ___ with the interior attack line(s).

Answer 42

Placement and timing

Question 43

Utilizing mechanical blowers to exhaust smoke, heat, and the products of combustion out an opening while entraining cool, clean air into the compartment.

Answer 43

Negative pressure

Question 44

The use of high-volume fans to create a slightly
higher pressure within a structure at an inlet opening, thereby
exhausting heat, smoke, and products of combustion out an
exhaust opening.

Answer 44

Positive pressure

Question 45

Utilizing the air movement created by a fog or broken
stream to help draw the products of combustion out of the
structure. This method is typically used after the fire has been
controlled and when other types of ventilation are unavailable.

Answer 45

Hydraulic

Question 46

When working on lightweight construction buildings firefighters ____ conduct roof operations directly over the fire

Answer 46

must not

Question 47

____ break windows if the location of the fire is
unknown

Answer 47

DO NOT