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Apparatus Tech material > Engine Company Ops > Flashcards

Engine Company Ops Flashcards

1
Q

With the exception of single family dwellings, it is important to determine the positions of what units when pre-planning?

A

First two engines and first truck

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2
Q

What is the classical decision making method?

A

A step by step logical sequence that decision makers use to reach the best decision.

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3
Q

What is the naturalistic decision making method?

A

An intuitive reaction to a problem where your 5 senses are used to trigger the memory of similar situations that they may have experienced or learned in the past.

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4
Q

In general, what is the first due engines responsibility?

A 
Proceed ahead of the truck or resuce
Lay the primary supply line
Deliever the on scene report
perform 360 lap
communicate results
force entry if no special service and control door
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5
Q

Second due engine responsibilities

A

Ensure primary water supply is established
assume command of the incident, if assigned
ensure initial attack line is deployed
deploy a second hosline

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6
Q

Third due engine responsibilities

A

Position on Charlie side if possible
lay secondary supply line
perform visual inspection of side charlie and report findings
Deploy third hoseline

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7
Q

Forth Due engine responsibilities

A

Ensure secondary water supply is established
Assume role of RIT
Take proactive measures but always be ready for RIT

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8
Q

Modern Fires burn how much faster than legacy fires?

A

10 times

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9
Q

When does flashover occur? What is a flashover?

A

Between the growth and fully developed stages.

When all surfaces and objects within a space have been heated to their ignition temperature and simultaneously ignite.

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10
Q

What is a backdraft?

A

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

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11
Q

What is stratification?

A

Layering of smoke and gas clouds

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12
Q

When does the decay stage occur?

A

When all the available oxygen is consumed.

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13
Q

In modern fuel loading, what leads to early flashover?

A

Heat release rate plus uncoordinated ventilation

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14
Q

When should ventilation needs be identified?

A

When the officer takes their lap.

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15
Q

On most fire grounds, when is the first ventilation operation conducted?

A

When the initial company forces entry

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16
Q

True or false: A charged hoseline should be in place prior to ventilation in most situations?

A

True

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17
Q

When hydraulic venting, how far from an opening should the nozzle be and how much of the opening should it cover?

A

Two feet from the opening and set the nozzle to a pattern that will cover 80% of the opening.

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18
Q

What does RECEO-VS stand for?

A 
Rescue
Exposure
Confinement
Extinguishment
Overhaul
Ventilation
Salvage
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19
Q

Whos responsibility is it to locate the fire?

A

Initial engine company officer

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20
Q

When a company encounters floor to ceiling smoke, where should they check for fire?

A

Floor below

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21
Q

Threats to safety on the fireground typically come from what two categories?

A

Advanced fire conditions

Collapse potential

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22
Q

NFPA suggests the upper range of temperature tenability for a human is what?

A

212 degrees

23
Q

At what PPM does the human body render unconscious and within 4-12 seconds death follows?

A

200,000

24
Q

At less than what percentage of oxygen results in rapid death?

A

10%

25
Q

A coordinated and specific relocation of units and their equipment operating from an area deemed untenable to a specific area deemed safe to continue operations is known as what?

A

Tactical withdraw

26
Q

When does an emergency evacuation occur?

A

When the IC recognizes a serious threat to firefighters and safe operation in the structure is compromised.

27
Q

What is a blitz attack?

A

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

28
Q

What fires should the blitz attack be applied too?

A

Fires that are well developed (pre- or post-flashover stage) are the main focus for this type of attack.

29
Q

How long should a master stream flow when utilizing the blitz attack?

A

60 to 90 second

30
Q

Using a fog nozzle, what is the expansion of water to steam ratio?

A

1:1,700 at 212 degrees. Greater expansion and higher temperatures.

31
Q

Pros to fixed gallonage Fog Nozzle?

A 
Limited amount of moving parts
lower maintenance cost
one universal flow for easy calculations
adequate gallonage for firefighting
versatility in stream selection from straight to wide fog
32
Q

Cons for fixed gallonage fog nozzle?

A

One singular flow amount

substantial nozzle reaction

33
Q

What ranges to selectable gallonage fog nozzle span from?

A

90 gpm- 200gpm

34
Q

What percentage will heat decrease by when penciling?

A

50%- 60%

35
Q

How far will a straight stream fog nozzle at 100 PSI or smoothbore nozzle at 80 PSI reach when using the quick attack monitor?

A

185 feet

36
Q

When using a medium fog pattern at 100 PSI with the quick attack monitor, how far will it reach?

A

50 feet

37
Q

A wide fog pattern on a quick attack monitor at 100 PSI will reach how far?

A

25 feet

38
Q

What is the primary function of an engine crew?

A

Stretching and operating a hoseline

39
Q

What is a fast, effective way to estimate the stretch of a hoseline?

A

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

40
Q

How far are telephone poles typically spread on residential streets?

A

75 feet

41
Q

How wide is a typical parking space?

A

10 feet

42
Q

A typical residential structure fire will require what GPM, making which line sufficient?

A

150-175 GPM; 1 3/4 line

43
Q

The mnemonic ADULTS for 2 1/2 inch hoseline selection stands for what?

A 
A- Advanced fire conditions
D- Defensive operations
U- Unknown fire location
L- Large open spaces
T- Tons of water
S- Standpipes
44
Q

If possible, how many lengths of hose should a nozzle firefighter bring to a fire floor?

A

2 lengths

45
Q

Nozzle reaction equation for a smoothbore nozzle is?

A

1.57 x bore diameter x nozzle pressure

46
Q

Nozzle reaction equation for a fog nozzle is?

A

0.0505 x rated flow x square root of nozzle pressure

47
Q

What is the engine drivers ultimate responsibility?

A

Safe delivery of personnel to and from the scene and the ability to deliver the correct flor of water to attack lines

48
Q

Can an engine operator charge a second attack line without a water source?

A

yes, depending on the situation and task needed for the second line

49
Q

How is a forward lay performed for water supply?

A

By laying supply hose from the hydrant to the scene

50
Q

How is a reverse lay performed for water supply?

A

By laying a supply hose from the scene to the hydrant.

51
Q

How is a split lay performed for water supply?

A

Both engines lay supply hose at an identical point. The attack engine proceeds to the scene and the supply engine to the hydrant.

52
Q

When is a split lay used in water supply?

A

When either the distance from the hydrant to the scene is to great or when the first due engine will not pass the hydrant en route to the scene.

53
Q

Whos responsibility is it to connect the two supply lines in a split lay?

A

The water supply engine

Apparatus Tech material (14 decks)

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