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Master tech > Engine company OPS > Flashcards

Engine company OPS Flashcards

1
Q

Fire service training falls into 3 categories, what are they

A

Self study
company training
multi-unit training

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2
Q

what makes up the fire tetrahedron

A

Fuel
chain reaction
oxygen
heat

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3
Q

what is thermal layering

A

The tendency of gases to form into layers according to temp

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4
Q

what is heat release rate defined as

A

the amount of energy released over time

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5
Q

what are indicators of the flammability of smoke

A

the density of smoke and color

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6
Q

smoke that is black/brown in color indicates what

A

fire is fully developed or decaying and smoke is too rich to burn

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7
Q

RECEO VS

A 
Rescue
exposure
confinement
extinguishment
overhaul
ventilation
salvage
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8
Q

the earths atmosphere contains 2% oxygen. what are the percentages that will result in rapid death

A

less then 10

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9
Q

To figure out Victim Survivability Profiling (VSP), firefighters have to conduct a thorough size-up of a structure fire and determine the likelihood of a victim’s potential to be rescued. There are several background factors that must be understood regarding the physiology of the human body. What does NFPA suggest the upper range of temperature tenability of the human body to be and a human body is rendered unconscious within 4 -12 secs at approximately how many PPM of CO?

A

212 deg. F/ 200,000 PPM

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10
Q

the fire attack technique known as penciling will immediately decreases building heat within a compartment by

A

50%-60%

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11
Q

A good way to estimate the length of a hose line to stretch is the use of situational awareness. Parking spaces in lots and telephone poles on the street are typically set at an approximate distance. What are the approximate distances of each?

A

10ft and 75ft

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12
Q

well holes are found in what location

A

stairwells of most buildings

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13
Q

what is the formula for nozzle reaction of a fog nozzle

A

0.0505 x Rathed flow x √nozzle pressure

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14
Q

what is the formula for nozzle reaction of a smooth bore nozzle

A

1.57 x diameter squared x nozzle pressure

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15
Q

without a water supply how long can a master stream be used before depleting the tank

A

60-90 seconds

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16
Q

heavy dense smoke with no visible flames in tightly closed occupancy and smoke condensation and pulsation are all warning signs of what

A

possible backdraft

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17
Q

_____ is the stage of fire where everything in the room or space have heated to their ignition temp and everything ignites at once

A

Flashover

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18
Q

How many stages of fire growth are there

A

4

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19
Q

when preforming hydraulic ventilation what percentage of the opening should the fog pattern cover to remove smoke and heat

A

80%

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20
Q

all smoke is filled with ____ and ____ that if left unchecked will result in fire

A

carbon and carbon monoxide

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21
Q

on the fire ground who is charged with conducting a thorough size up developing and implementing the initial strategy/tactics, and conducting fire ground tasks that often dictate the overall success of incident operations

A

first arriving source: Engine company

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22
Q

when stretching a hose line to any upper floor apartment maximum hose length can be achieved by stretching the hose line through where

A

well-hole

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23
Q

There are five construction types: fire resistive, non-combustible, ordinary, heavy timber, and wood frame. Most new home construction can be classified as……?

A

wood frame

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24
Q

on a standard house fire which unit in the run orders lays the secondary supply line, visually inspects side “C” deploys 3rd house line and positions opposite first engine

A

3rd due engine

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25
Q

the process where combustible gases are driven from solid fuels as they are heated

A

pyrolysis

26
Q

the four fire growth stages are

A

incipient
growth
fully developed
decay

27
Q

heat release rate is defined as

A

amount of energy released over time

28
Q

what 4 indications form an incident profile regarding location status and extent of fire

A

smoke
smoke density/color
velocity
volume of smoke

29
Q

The R in RECEOVS is the primary focus of an incident and stands for

A

Rescue

30
Q

A coordinated and specific relocation of units and their respective equipment operating from an area deemed untenable to a specific area deemed safe to continue operations and has a lesser degree of urgency compared to an emergency evacuation?

A

Tactical withdrawal

31
Q

a blitz attack is performed when

A

initial attack is defensive then transitions to offensive once the fire is knocked down by exterior streams

32
Q

a formula used for estimating the length of hose need is

A

set back + width of building + length of building + 25’ per floor ( regardless of floor that fire is reported to be on), + 50’ at point of attack

33
Q

a fire hose of what size and flowing how much water is sufficient for a typical house fire

A

1.75” @ 150-175gpm

34
Q

the mnemonic ADULTS is used to assist in selection of a 2.5” line. What does the A stand for

A

Advance fire conditions

35
Q

when chocking a door open in fire conditions where is it best to play the chock

A

low so it can be quickly removed to control door.

36
Q

Smooth bore = 1.57 x bore diameter squared x nozzle pressure is the formula published by NFPA for…….?

A

nozzle reaction

37
Q

When a second engine lays a supply line from the scene to a fire hydrant this is called…….?

A

reverse lay

38
Q

Immediately following shift line up members assigned to the engine company should do what?

A

inspect and examine all tools and appliances associated on apparatus

39
Q

Immediately following shift line up members assigned to the engine company should do what?

A

examine all hose loads racks nozzles and appliances

40
Q

When positioning apparatus whenever possible avoid what?

A

a layout that would place handlines in route of travel

41
Q

First due engine company will generally:

A

Drop supply line
360 of structure
advance initial attack line

42
Q

Expecting the building to be on fire when you arrive on a call dispatched for a fire alarm is an example of?

A

how to eliminate complacent behaviors

43
Q

Who should personnel gather intelligent information from on fire alarm or fire calls in respect to the nature or location of an alarm?

A

fleeing occupants or building rep

44
Q

If an engine company arrives alone without a special service unit on an alarm, who should remain outside?

A

one firefighter along with the driver

45
Q

An Explosion that occurs when additional oxygen is introduced into a smoldering fire, heated gases enter their flammable range and ignite with explosive force.

A

backdraft

46
Q

Observed when flames present in layers of smoke as a result of heated gases that are pushed under pressure from the fire area into uninvolved areas.

A

rollover

47
Q

tendency of gasses to form into layers according to temp

A

thermal layering

48
Q

This stage begins when heat, oxygen, and fuel combine and have a chemical reaction

A

incipient stage

49
Q

occurs when the fire increases in size from small flames to full fire that involves the entire room this may be rapid or prolonged event

A

growth stage

50
Q

during this stage the entire room and contents are involved in fire

A

fully developed stage

51
Q

during this stage the potential for backdraft is present

A

decay stage

52
Q

What decision-making method is a step-by-step, logical sequence that the decision-maker uses to reach the best decision?

A

classical

53
Q

What decision-making method is an intuitive reaction to a problem?

A

naturalistic

54
Q

What component of the fire tetrahedron is needed to raise the material to its ignition temperature?

A

heat

55
Q

What component of the fire tetrahedron happens when the three elements are present in their necessary condition?

A

chain reaction

56
Q

What is the layering of smoke and gas clouds?

A

stratification

57
Q

This nozzle has a preset gallon per minute setting that allows it to flow the set gallonage at any stream setting (fog, straight, etc,) as long as the manufacturer rated nozzle pressure is maintained.

A

fixed gallonage fog nozzle

58
Q

A fire attack method that utilizes a fire stream applied through an opening, allowing the superheated atmosphere to turn the water into steam is called?

A

indirect attack

59
Q

The “D” in the acronym ADULTS stands for?

A

defensive

60
Q

The “T” in the acronym ADULTS stands for?

A

tons of water

61
Q

Using a smoothbore nozzle at 80psi on a Mercury quick attack monitor yields a reach of approximately ____’

A

185’

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