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Flashcards in 6 Initial Attack Lines Deck (47)
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1
Q

In almost all offensive fire attack situations, which type of attack is used

A

Direct attack

2
Q

A type of fire attack in which a solid or straight hose stream is used to deliver water directly onto the base of a fire

A

Direct attack

3
Q

A type of fire attack in which a solid, straight, or a narrow fog stream is used to direct water at the ceiling to cool superheated gases in the upper levels of the room

A

Indirect attack

4
Q

What is the objective of the indirect attack, by removing heat from the upper atmosphere

A

Preventing flashover

5
Q

A disadvantage of an indirect attack

A

Steam expansion ratio can cause serious burns to firefighters and victims

6
Q

In an area were victims are located which type of attack is a poor choice

A

Indirect attack

7
Q

When the area has been cool down and ventilation has taken place indirect attack should be changed to

A

Direct attack

8
Q

A type of fire attack that uses both direct and indirect methods one after the other

A

Combination attack

9
Q

Fire attack inside of buildings being demolished or abandoned buildings, or ones that have been burning for a long time should not be what

A

Aggressive interior attack

10
Q

Fire attack for the dangerous structures such as an abandoned building or in demolition should be conducted how

A

Exterior attack followed by interior attack once fire is knocked down

11
Q

What does choosing the size or sizes of an attack line depend on

A

The extent and location of the fire and how it will be fought

12
Q

Most fire department she has what size lines for interior attack hose

A

One and three-quarter inch, 2 1/2 inch

13
Q

The typical inch and a half attack line is equipped with a spray nozzle that would discharge under proper pressure how many gallons per minute

A

60 to 125 GPM

14
Q

With either a smoothbore nozzle or a spray nozzle an inch and three-quarter line can discharge how many GPM

A

120 to 200 GPM

15
Q

On a 2 1/2 inch attack wine with a nozzle pressure of 50 psi the inch and an eighth smoothbore tip will produce how many gallons per minute

A

265 GPM

16
Q

I 2 1/2 inch attack line with a novel pressure of 50 psi the inch and a quarter smoothbore tip will discharge how many GPM

A

325 GPM

17
Q

Most effective nozzle patterns are

A

Straight streams or solid stream

18
Q

Spray nozzles adjusted on a fog pattern inside a building should be restricted to which type of locations

A

And occupied confined spaces, such as basements on occupied, ethics, or storage areas

19
Q

In almost all cases spray nozzles are designed to deliver their rated flow capacity at what PSI

A

100 psi

20
Q

At 50 PSI on 8 inch and three-quarter attack wine a smoothbore 15/16 inch tip flows how many GPM

A

180 GPM

21
Q

On an inch and three-quarter attack wine operating at 50 PSI nozzle pressure the 1 inch tip flowers how many GPM

A

200 GPM

22
Q

List the four types of spray nozzles commonly available

A

Basic spray nozzle,
constant gallonage spray nozzle,
constant pressure automatic spray nozzle,
and the constant/select gallonage spray nozzle

23
Q

Basic spray nozzle

A

Adjustable spray nozzle where the rated discharges delivered at the designed pressure and nozzle setting

24
Q

Constant gallonage spray nozzle

A

Adjustable pattern spray nozzle discharging constant flow rate throughout the range of patterns

25
Q

Constant pressure automatic spray nozzle

A

Spray nozzle where the pressure remains relatively constant throughout the range of discharge rates. Designed to maintain a minimum hundred psi tip regardless of gallonage flow

26
Q

After entering an area that is very hot and finding no fire what should be done

A

Check the area below adjacent areas walls and ceilings or other void spaces for extension

27
Q

If the fire is large enough to the master stream must be used for an initial attack offense of operations should be

A

Curtailed and firefighters should not be allowed to enter the structure

28
Q

With 50% involvement of a commercial space what size line should be the interior attack

A

2 1/2 inch

29
Q

In the case of a basement much like a concrete vault with no means to quickly ventilate what type of line should be used

A

Two and a half smoothbore from an outside opening

30
Q

Are far has gained control of a good portion of a large floor area what should be used to attack the fire and what should be used in support

A

2 1/2 inch attack line on the fire floor, inch and three-quarter attack line on the floor above around and under fire to prevent extension

31
Q

True/false house lines do not need to be advanced to upper floors of a fire building

A

False they must be advanced to upper floors

32
Q

Hose lines maybe advanced using the following methods

A

Ground ladders aerials or platforms.
Hoist with ropes.
Carry into the building and connected to an outside hose line through window.
Passed up to a window with a pike pole

33
Q

Why is it important to control the stairway and prevent fire extension

A

To illuminate them as channels for vertical spread of fire and keep them open as escape routes

34
Q

Alternative methods may require much less hose than advancing up the stairway. How much hose must be allotted for each floor going up the staircase as opposed to the face of building

A

50 foot section per floor, 50 foot section per 4 to 5 stories

35
Q

Ventilation of stairways and hallways as a upmost importance firefighters attempting to Advance lines should do what

A

Vent as they go

36
Q

Free burning fired should be managed with what type of attack tactic

A

Coordinated attack

37
Q

Indications of a smoldering fire are

A

Little or no fire visible from outside.
Rapidly rising smoke.
Building secured tightly.
Smoke under pressure from windows doors or other openings.
Yellow or dirty brown smoke.
Window glass stained brown or black with cracking.
Smoke exiting the building appearing to be sucked back in, breathing

38
Q

One of the main fuels and a smoldering fire is what

A

Heated carbon monoxide, hindering oxygen use by the fire

39
Q

Backdraft is

A

The sudden explosive ignition of fire gases when oxygen is introduced into a superheated space previously deprived of oxygen

40
Q

Ventilation of the smoldering fire requires what

A

Opening made at the highest point safe. Allow that superheated gases out to prevent explosive nature

41
Q

True/false ventilation must take place before any attempt is made to enter the building during a smoldering fire otherwise entering may cause immediate ignition

A

True

42
Q

During the ventilation of a smoldering fire engine companies should be prepared with what

A

Charged attack lines in a safe area

43
Q

It is recommended that the Inch and a half hoes be

A

Eliminated from structural firefighting

44
Q

When a single inch and three-quarter hose line is ineffective and extinguishing a larger fire

A

Additional larger hose lines should be used

45
Q

Which type of stream is the safest and most effective when conducting interior firefighting operations in an occupied area

A

Solid or straight stream

46
Q

When confronted with a well involved fire in a part of a structure below an occupied area, basement storage fire below apartments, it is usually best to

A

Attack using a 2 1/2 inch line with solid stream, lay and inch and three-quarter line to the floor above the fire

47
Q

A type of fire where all three requirements for combustion /oxygen fuel and heat, are present in sufficient quantities to promote the spread of flames and fire

A

Free burning