Evfd Ifsta Essentials Of Fire Fighting 7 Ch 11

Front 1

Tactical Ventilation is a tool to help firfighters __________ a fire.

Back 1

control

Front 2

Being in control of the fire means using ventilation and __________ to control the fire's behavior.

Back 2

water application

Front 3

Ventilation helps firefighers contorl two variables in a structure: where hot gases and smoke exhaust from and ________.

Back 3

oxygen availability

Front 4

What is NOT a product of combustion that ventilation is designed to control: Heated toxic gases, carbom particles (soot), unburned hydrocarbons, hydrogen peroxide & ozone ?

Back 4

Hydrogen peroxyide and ozone

Front 5

What action needs to follow immediately after ventilating a copartment that is in ventilation-limited decay?

Back 5

water application to cool gases and surfaces

Front 6

What type of action disrupts flow path control?

Back 6

Breaking windows unnecessarily

Front 7

In general, closing an opening helps control the fire unless:

Back 7

it goes against an established incident strategy

Front 8

In what kind of condition can firefighters in full PPE and SCBA NOT survive?

Back 8

Rapid fire development

Front 9

If ventilation is performed wthout coordinating fire attack, no amoutn of additional __________ will cause a fire to become fuel-limited or prevent flashover.

Back 9

ventilation

Front 10

What will proper ventilation alone do to interior fire condtions?

Back 10

Decrease the rate of fire spread and increase visibility for a very short period

Front 11

What BEST describes how hot fire gases flow during ventilation operations?

Back 11

Less dene hot gases escape, creating low pressure that draws in cooler ambient air down low

Front 12

Tactical ventilation that is implemented during or after suppression can create an interior environment with increased:

Back 12

visibility to aid in fire fighting operations and primary search operations

Front 13

How is tactical, coordinated ventilation typically used for life safety applications?

Back 13

to alter the flow path away from trapped occupants

Front 14

What is the goal of tactical ventilation performed as part of overhault?

Back 14

Reduce smoke damge to the structure

Front 15

Successful tactical ventilation conducted in conjunction with fire attack depends upon:

Back 15

coordinating with other fireground activities

Front 16

Which condition specific to tactical ventilaiton shoudl e comunicated to crew members and/or a supervisor?

Back 16

locations where smoke is escapting the structure

Front 17

As a way of monitoring for unplanned ventilations and loss of structural integrity, what is one of the two assumptiosn that firefighters hsould make to guide their decisions when ventilation a structure?

Back 17

the fire in the structure is ventilation-limited

Front 18

What is a safety consieration for tactical ventilation when working in windy conditions?

Back 18

you are safest working with the wind at your back

Front 19

Which is an example of tactical ventilation affecting expsures?

Back 19

FIre may be drawn into exterior windows or openings of the adjacent buildings

Front 20

What is NOT an indication of a possible roof collapse: Pitched roof, Spongy roof, Melting asphalt, sagging HVAC unit?

Back 20

Pitched roof

Front 21

What type of tool used during ventilation is designed for pulling or opening ceilings?

Back 21

pike pole

Front 22

What type of equipment would be used as a wind or smoke control device?

Back 22

a heavy curtain or something similar

Front 23

What is the BEST description of how to conduct inspection and maintenance of ventilation equipment?

Back 23

follow manufacturer instructions for inspecting and maintaining power tools

Front 24

Opening windows and doors on the downwind side first in order to create an exhuast point is part of:

Back 24

wind assisted ventilation

Front 25

If only a single opening is made on a compartment filled with fire, that opening will:

Back 25

serve as both a vent that lest in fresh air and an exhaust port that lest out smoke and hot gases

Front 26

What is an example of mechanical horizontal ventilation?

Back 26

using a fan to create positive pressure inside a structure

Front 27

Never direct a __________ a horizontal exhaust opening when inteior attack crews are inside the structurebecause it will force smoke, heat, and steam toward them.

Back 27

fog stream into

Front 28

What would be a typical use of mechanical horizontal ventilation after fire suppression?

Back 28

removing contaminated atmospheres

Front 29

TRUE/FALSE: Negative-pressur ventilation requires that the opening around the fan be sealted.

Back 29

True

Front 30

Positive pressure fans work best on;

Back 30

fires confined to a compartment

Front 31

What BEST describes a postivie pressure attack?

Back 31

controlling air flow within the structure with a positive pressure fan during the initial stages of the fire and before suppression

Front 32

In which scenario will a positive pressure attack be MOST effective?

Back 32

the exhuast opening keeps the pressure in the fire room lower than the remainder of the structure

Front 33

What action will create effective positive pressure ventilation?

Back 33

Use higher pressure inside the structure to push smoke toward lower-pressure exhuasts

Front 34

What is a disadvantage of positive pressure ventilation (PPV)?

Back 34

hidden fires may be accelerated and spread throughout the building

Front 35

When using positive-pressure ventilaiton to ventilate a multistory building, it is best to:

Back 35

apply possitve pressure at the lowest point (ground level)

Front 36

The farther the nozzle is from an exhuast opening while performing hydraulic ventilation, the:

Back 36

more air entrains into the fog pattern

Front 37

What is a disadvantage of hydrualic ventilation?

Back 37

water supply is depleted

Front 38

What is a factor that can reduce the effectiveness of vertical ventilation?

Back 38

burn-through of the roof, floors or walls

Front 39

What is a safety precaution that should be observed during vertical ventilation?

Back 39

when using a power saw, make sure that the angle of the cut is away from body

Front 40

Firefighters should never direct a fog stream into a vertical exhaust opening when:

Back 40

interior attack crews are inside the structure

Front 41

What can sounding the roof with the blunt end of a tool tell you about the condition of the roof?

Back 41

if the roof feels solid, the structural members beneath the sheething may still fail under your weight

Front 42

What is one responsibility of the roof ventilation team leader?

Back 42

directing efforts to minimize secondary damage (damage that fire fighting operations cause)

Front 43

The two primary types of inspection holes cut in roofs are the kerf cut and the:

Back 43

triangle cut

Front 44

TRUE/FALSE: It only shows whether or not smoke or flame is escaping the cut

Back 44

True

Front 45

Where should the hole be cut when ventilating shingle-covered pitched roofs?

Back 45

a few inches (mm) elow the peak on the downwind side

Front 46

On industrial buildings with thick metal roofs, it may be easier and faster to:

Back 46

open skylights, monitors, or scuttle hatches

Front 47

In what type of scenario would the IC order firefighters to create a trench cut?

Back 47

the main body of the fire is too large to extinguish

Front 48

What is an advantage of cerating a trench cut?

Back 48

works well in large buildings

Front 49

What type of fire would firefighters likely have to descend thorugh intense rising heat and smoke to get to the seat of the fire if ventilation is not effective?

Back 49

basement fires

Front 50

Which statement about breaching floors is correct?

Back 50

when breaching, firefighters should be aware that upper floors of buldings may be finished with lightweight concrete

Front 51

When ventilating windowless buildings:

Back 51

HVAC systems need to be brought under fire department control as soon as possible

Front 52

What is the stack effect?

Back 52

FIre, smoke and hot gases move upward through a high rise, creating an upward draft

Front 53

When performing tactical ventilation using stairwells in a high rise, where will additional personnel need to be assigned?

Back 53

at doors to the stairwell to monitor for occupants entering the stairwell