Hose, Streams, and Nozzles Flashcards
Which hose diameter is used in both supply line and attack handline?
2.5”
In general, what volume does a 2.5” handline flow?
250 GPM
Hard rubber hose stored on a hose reel is ___ hose.
Booster
A 50’ section of charged 2.5” hose weights approximately ___.
140 lbs.
What is the term for a hose line that is stored on an engine connected to a discharge and equipped with a nozzle for immediate deployment?
Preconnect
Which type of load is commonly used for preconnected attack lines?
Minuteman
The function of a standpipe system is to provide___.
A water supply for interior attack lines.
Attack lines should be connected to a standpipe system ___.
One floor below the fire floor.
What is the advantage of a smooth-bore nozzle?
Longer stream reach
Most smooth-bore nozzles are designed to operate at which pressure?
50 PSI
What is an advantage of a fog-stream nozzle?
Greater heat absorption per gallon discharged.
Generally speaking, a 1.75” attack hose can flow___.
120-180 GPM
Master streams flow a minimum of___.
350 GPM
For which preconnected hose load does the fire fighter shoulder part of the load, with hose paying off the top of that load as the fire fighter advances?
Minuteman
What is the correct procedure for the triple layer load?
The entire load must be on the ground before the nozzle can be advanced.
Which preconnected hose load forms an S-shape in the hose bed?
Triple Layer
When there is extra hose at the entry of the building, how should that hose be arranged?
A serpentine pattern.
What is the correct procedure for deploying a triple-layer load preconnect?
Place the nozzle and the top of the fold over the should and walk away form the apparatus
Which attack line load is particularly useful when the line must be advanced up a stairway?
Minuteman
How should fire fighters space themselves when advancing an uncharged line up a ladder?
One fire fighter on each ladder section
Compared to fog nozzle streams, smooth-bore nozzle streams __.
Absorb less heat.
Which statement about straight streams is correct?
A) A straight stream is discharged from an adjustable fog nozzle.
B) a straight stream is the same as a solid stream.
C) A straight stream is discharged from a smooth-bore nozzle.
D) A straight stream resists breakup better than a solid stream.
A) A straight stream is discharged from an adjustable fog nozzle.
Most fog nozzles are designed to operate at which nozzle pressure?
100 PSI
What is a characteristic of a fog stream?
It creates water droplets with a large surface area.
Which type of stream is most likely to disrupt thermal balance?
Fog
Why is it necessary to limit the lowest stream angle of a portable monitor?
To prevent instability of the monitor
What is the most frequently used hose line for interior attack?
1.75”
An elevated master stream device mounted at the tip of an aerial ladder is a ___.
Ladder Pipe
The Higbee indicator is:
utilized for aligning the male with the female coupling.
A hose adaptor connects two hose sections of ___.
Equal diameter but differing threads
Which item is used to attach a smaller hose to a larger one?
Reducer
Which coupling goes on the inside of a straight hose roll?
Male
Which hose load has the hose up on its edge and placed around the perimeter of the hose bed in a U-shape?
Horseshoe
The 2-fire fighter stiff-arm method is used to ___.
Uncouple hose.
Which hose load has the hose up on its edge and laid side-to-side in the hose bed?
Accordion
A short fold in a supply hose load that prevents a coupling from flipping around when the hose is being laid out is a ___.
Dutchman
Which type of hose roll is used to store hose on a storage rack?
Straight
Prior to entering a fire area with a charged hose line, the nozzle operator should first:
Bleed air from the line.
When advancing a hose line into a structure fire, the fire fighter on the nozzle and the back-up fire fighter should be:
On the same side of the hose line.
The fire hose is generally classified by its size (inside diameter) and by:
Material of construction
All of the following are one-person methods of uncoupling hose except the ___.
A) knee-press
B) stiff-arm
C) coupling-tilt
D) foot-tilt
B) Stiff Arm
The most often used hose lay at fire scenes is the ___ lay.
Forward
When should the fire fighter attaching the hose to the hydrant charge the supply line?
Not until the driver/operator signal is received
When performing a forward lay, the pumper is driven from the:
Water source to the fire scene
A distinct advantage of the minuteman load over the flat load is that:
the entire load can be advanced without dragging
The main advantage of the donut roll is:
Both ends are available on the outside of the roll
If dust and dirt on a woven-jacket fire hose cannot be removed by brushing, it should be washed with:
mild soap or detergent
When fire fighters are unable to enter the structure or fire area due to intense fire conditions, a(n) ___ attack can be made.
Indirect
Fine water droplets and maximum high water surface area are characteristics of a ___ stream.
Fog
A stream designed to be as compact as possible with little shower or spray is known as a ___ stream.
Solid
The 4 elements that make a fire stream are a pump, water, nozzle, and:
Hose
A straight stream is discharged from a(n) ___ nozzle.
Adjustable-Fog
One way to identify the physical structure of a male coupling is by the:
Lugs on the shank
What hose lay causes the least wear due to vibration in the truck.
Flat
What is a hose appliance?
Anything that water runs through.
What is a hose tool?
Device to move or operate hose lines.
