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2025 Lt > Engine Company Ops > Flashcards

Engine Company Ops Flashcards

1
Q

A small wall mounted safe that holds building keys for retrieval by fire departments during emergency situations

A

Knox box

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2
Q

Occurs when all surfaces and objects within a space have been heated to their ignition temperature and simultaneously combust

A

Flashover

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3
Q

Is an explosion that occurs when oxygen enters an oxygen-deficient smoldering fire

A

Backdraft

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4
Q

Backdraft conditions typically exist during what stage of fire

A

Decay stage

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5
Q

Takes place when pressure from the fire area pushes heated gases into uninvolved areas causing flames to present in layers of smoke

A

Rollover

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6
Q

Occurs when fire gases separate into layers according to temperature. The gases with the highest temperature move to the top layers, and the cooler gases move to the bottom layers

A

Stratification

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7
Q

A fire’s heat release rate is the amount of energy the fire releases over time

A

Heat release rate

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8
Q

RECEO VS stands for

A

Rescue
Exposure
Confinement
Extinguishment
Overhaul

Ventilation
Salvage

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9
Q

Personnel must be ______ and ______ prepared when reporting to the fire station for duty.

A

Mentally , Physically

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10
Q

Examples of information that should be communicated to oncoming shift members include:

A

Street closings
out-of-service hydrants
inoperative standpipe or sprinkler system
equipment deficiencies

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11
Q

What represents an essential component of operational competence

A

Training

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12
Q

Under stressful situations cognitive processes often transition from classical decision making to what

A

Naturalistic decision making

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13
Q

What decision making process has the decision maker following a step-by-step logical sequence to reach the best decision

A

Classical

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14
Q

What decision making process results from an intuitive reaction to a problem?

A

Naturalistic

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15
Q

The naturalistic decision maker quickly chooses actions based on successful past choices is called what

A

Recognition-primed decision making

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16
Q

Fire service training falls into what three categories

A

Self-study
Company training
Multi-unit training

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17
Q

Training officers should conduct multi-unit training how often?

A

Quarterly basis

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18
Q

The Fire Tetrahedron consists of what

A

Oxygen
Fuel
Heat
Chain Reaction

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19
Q

The four stages of fire growth are

A

Incipient
Growth
Fully developed
Decay

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20
Q

Rollover takes place during what stage of fire

A

Growth

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21
Q

Rollover is a warning that the fire area may be reaching the point of what

A

Flashover

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22
Q

Refers to the point when all surfaces and objects within a space reach their ignition temperature and simultaneously ignite

A

Flashover

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23
Q

What stage begins when the available oxygen can no longer support combustion

A

Decay

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24
Q

Is an explosive event caused by the introduction of oxygen into an oxygen-deficient, high-heat, smoldering fire

A

Backdraft

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25
Q

Backdraft conditions typically exist during what stage of a fire

A

Decay

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26
Q

In building construction what materials include man-made materials

A

Modern

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27
Q

In building construction what materials include natural materials such as cotton, wicker, solid wood and dimensional lumber

A

Legacy

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28
Q

What is referred to as a collection of airborne particulates and gases emitted when a material combusts and the quantity of air these particulates and gases entrain and mix into call

A

Smoke

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29
Q

Smoke leaving a structure has four inherent characteristics which are:

A

Volume
Velocity
Density
Color

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30
Q

The volume of smoke leaving a structure indicates what

A

The amount of fuel that is “off-gassing” within a given space

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31
Q

The velocity (speed) of smoke leaving a structure provides insight into what

A

The fire’s location relative to the smoke exhaust point

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32
Q

Viewed from outside a building, slow-moving smoke indicates the seat of the fire is where?

A

Remote from the exhaust point

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33
Q

Viewed from outside a building, fast-moving smoke indicates the fire is where?

A

Close to the exhaust point

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34
Q

What refers to the thickness of the emission and how much fuel is laden in the smoke

A

Density

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35
Q

The greater the smoke density, the higher the likelihood for what

A

A hostile fire event such as a flashover or rapid-fire spread

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36
Q

What colors are typically observed with smoke

A

White
Grey
Brown
Black

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37
Q

A fire’s incipient stage typically produces ______ smoke as the fuel off-gases moisture and water vapor

A

White

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38
Q

Can indicate slowing fire growth as the availability of fuel decreases

A

Grey

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39
Q

Smoke that signals an underventilated fire

A

Brown or black

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40
Q

Smoke that can indicate that a fully developed fire is feeding off a wood fuel source

A

Brown

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41
Q

Smoke that typically signifies heavy fuel loads that are not being fully consumed

A

Black

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42
Q

What articulates the general plan or course of action taken to reach the objectives

A

Strategy

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43
Q

What involves the specific actions employed to fulfill the strategy

A

Tactics

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44
Q

When does size-up begin

A

With receipt of the alarm and continues throughout the incident

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45
Q

Officers should train their personnel to develop and maintain what

A

Situational Awareness

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46
Q

What represents the primary focus of any incident

A

Rescue

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47
Q

The primary goal of the exposure line is to do what

A

Minimize fire spread and stay ahead of the fire

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48
Q

What is by far the most effective way to quickly mitigate an incident because it eliminates or improves all of the other fireground obstacles

A

Extinguishment

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49
Q

What involves a systematic look at the entire fire scene to ensure no further traces of fire exist

A

Overhaul

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50
Q

What on the fireground can represent one of the most dangerous and important tasks firefighters perform

A

Ventilation

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51
Q

Salvage is

A

Property conservation

52
Q

The two modes of operation at a fire are

A

Offensive Mode & Defensive Mode

53
Q

Involves taking direct action to mitigate a problem

A

Offensive Mode

54
Q

This mode prevents damage to the area around a structure

A

Defensive Mode

55
Q

What sets the foundation for incident management

A

Size-up

56
Q

During a 360-degree lap of the structure what can help determine the location and intensity of the fire

A

Thermal imaging camera

57
Q

What is not a good indicator of a fire’s location

A

Smoke volume

58
Q

Crews operating on the interior should occasionally stop and hold their breath for several seconds and listen for what

A

The sounds of the fire

59
Q

VSP is a term that the fire service has used for many years and stands for

A

Victim Survivability Profiling

60
Q

NFPA suggested that the upper range of temperature tenability for humans is approximately what

A

212 degrees F

61
Q

A carbon monoxide density of approximately 200,000 parts per million renders the human body unconscious within

A

4-12 seconds

62
Q

Earth’s atmosphere contains 21% oxygen. Percentages of less than ____ rapidly result in death

A

10%

63
Q

Besides carbon monoxide another toxic fire gas is

A

cyanide

64
Q

What does “CAN” mean

A

Conditions
Actions
Needs

65
Q

When officers make a strategic change from offensive to defensive mode or vice versa it is called what

A

Transition

66
Q

A ______ involves the coordinated and specific relocation of units and their equipment from an area deemed untenable to a specific area deemed safe for continued operations

A

Withdrawal

67
Q

Upon ordering a withdrawal, Command should do what

A

Perform a personnel accountability report

68
Q

An emergency evacuation differs from a withdrawal because the emergency evacuation has

A

A higher degree of urgency

69
Q

When the first-arriving engine drops a supply line at a hydrant before arriving at the incident location

A

Forward Lay

70
Q

When the first-arriving engine drops a line at an intersection and directs the next-arriving engine to continue to the hydrant on the second street

A

Split Lay

71
Q

When the second-arriving engine drops supply line at the first-arriving engine and proceeds to the hydrant

A

Reverse Lay

72
Q

Most residential fires require a fire flow rate of between ______ and ______ gpm.

A

100, 200

73
Q

A 2.5” hoseline is typically appropriate for fires where

A

Commercial buildings
Exterior attacks
exposure protection

74
Q

A 2.5” hoseline achieves flows ranging from _____ to _______ GPM

A

200, 325

75
Q

Stretching and advancing a 2.5” hoseline often requires _____ companies and up to ______ firefighters

A

2, 6

76
Q

The process of determining the needed length of hose is called

A

Estimating the stretch

77
Q

A fast and effective method of estimating the stretch involves the following formula

A

Setback + width of building + length of building + 1/2 length (25ft) per floor + 1 length at the point of attack

78
Q

What refers to the distance from an engine company to the fire building’s entrance?

A

Setback

79
Q

The average residential roadway width is ____ feet

A

12

80
Q

The modern single-vehicle driveway is approximately _____ ft wide by ______ ft long

A

12, 25

81
Q

The average sedan or sport utility vehicle is approximately ___ ft wide by ____ ft long

A

6, 15

82
Q

Personnel should estimate the need for ____ ft of hoseline to reach every floor above or below the level of entry

A

25

83
Q

To finish an Accordion Forward the nozzle firefighter should grab

A

The nozzle and halfway point of the shoulder load and advance forward

84
Q

If you have a dirty hallway full of smoke where should you deploy your standpipe line?

A

The hallway below the fire floor

85
Q

All companies must ensure the primary hoseline is in place and progressing before

A

deploying any other hoselines

86
Q

Firefighters must _______ all doors through which they stretch dry hoselines

A

chock

87
Q

The preferred method to chock doors is ____ so personnel can quickly remove chocks while retreating under advancing fire conditions

A

low

88
Q

Generally 1.75” hoselines can deliver

A

150-200 gpm

89
Q

Generally 2.5” hoselines can deliver

A

250-330 gpm

90
Q

2” hoselines are considered intermediate-sized hoseline that delivers flows between

A

200-250 gpm

91
Q

Tiny water droplets convert to steam with an expansion ratio of ___:____ at _____degrees F

A

1700:1, 212

92
Q

If extending a dry hoseline, engine company members should do what?

A

Remove the entire nozzle assembly

93
Q

Smoothbore nozzle pressure for handlines is normally ____ psi while adequate handline pressure is ___-____

A

50, 40-60

94
Q

Master stream smoothbore nozzle pressure is

A

80 psi

95
Q

The maximum nozzle reaction that advancing and operating firefighters can handle effectively for 1 firefighter is

A

60lbf

96
Q

The maximum nozzle reaction that advancing and operating firefighters can handle effectively for 2 firefighters is

A

75lbf

97
Q

The maximum nozzle reaction that advancing and operating firefighters can handle effectively for 3 firefighters is

A

95lbf

98
Q

A master stream is any stream flowing _____ gpm or more

A

350

99
Q

When advancing engine companies encounter a significant smoke condition and heat, regardless of visible flame, they should do what

A

Apply a solid or straight stream to the area overhead and in front

100
Q

If the nozzle firefighter opens the hoseline within ___-____ sec, the temperature will not return to the levels present prior to suppression efforts

A

10-15

101
Q

A fire stream applied at a _____ angle will distribute the water across the greatest area of ceiling

A

steep

102
Q

When applying fire streams from the exterior into a compartment without an intact ceiling, firefighters can apply the fire stream where?

A

To the lintel over a window

103
Q

This refers to the process of removing smoke and heat from a structure’s interior through fire-stream air entrainment

A

Hydraulic ventilation

104
Q

Traditional hydraulic ventilation indicate the nozzle should be ____ ft away from the ventilation outlet with a wide fog stream covering ____% of the ventilation opening

A

2, 80

105
Q

UL fire-stream experiments showed that a ______ fog pattern moved in an “___” pattern as far from the opening as possible moves a comparable amount of air as positive pressure ventilation fans

A

narrow, O

106
Q

Before advancing after a direct attack, firefighter should do what to avoid firefighter injury

A

Sweep the floor with a stream to cool embers and other hot materials

107
Q

The two types of attack methods are

A

Direct & Indirect

108
Q

When using both direct and indirect attack methods is called

A

Combination attack

109
Q

This involves using an exterior master stream to knock down the main body of fire

A

Blitz Attack

110
Q

Firefighter responsible for deploying hoseline

A

nozzle fireman

111
Q

Firefighter responsible for hose handling, fire behavior observation, room control

A

Backup fireman

112
Q

What must be eliminated to ensure accurate fire flow and advancement

A

kinks

113
Q

To maintain correct body position, the backup firefighter should

A

Rest on one knee with their leading leg out front and their head up

114
Q

The backup firefighter should maintain an “___” formation in the hoseline

A

S

115
Q

The engine company driver’s ultimate responsibility is

A

the safe delivery of personnel to and from the scene

116
Q

When the water tank reaches _______ capacity, the driver must communicate this finding to the ______.

A

half, officer

117
Q

The primary elements of communication relayed by the first-arriving engine officer pertain to:

A

water supply instructions
on-scene report
situation report
command statement

118
Q

Who serves as the IC by default until Command can be formally established

A

1st due engine company officer

119
Q

After the engine officer has completed a size-up they must make a command statement. The two options are:

A
  1. request to transfer command
  2. establish command
120
Q

If the engine officer finds the entrance door to the structure open they should do what

A

Close it to control the flow path

121
Q

After personnel have extinguished the main body of fire, the engine officer should do what

A

Order the nozzle shut down so any remaining fire will light up

122
Q

Firefighters can shorten response times by

A

quickly turning out for responses

123
Q

To eliminate complacent behaviors, personnel responding to fire alarms should prepare as if responding

A

to a confirmed building fire

124
Q

Personnel should check the fire alarm or annunciator panel and verify

A

the location
type
number of alarms activated

125
Q
A

2025 Lt (6 decks)

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