Definition of Terms Flashcards

(27 cards)

1
Q

generic term applied to any nozzle, wye, siamese, deluge monitor, or any other piece of hardware used in conjunction with fire hose for the purpose of delivering water.

A

Appliance

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

any pumping apparatus that is supplying water directly to attack lines.

A

Attack pumper

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

pumps used on all modern fire apparatus. This type of pump takes advantage of incoming pressure. Water enters the eye of the pump then travels through one or more impellers.

A

Centrifugal pumps

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

the quantity of water issuing from an opening expressed in gpm.

A

Discharge

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

actual velocity pressure of the water (measured in psi) for an individual hose line.

A

Discharge pressure

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

the rate at which water travels from an orifice and can be measured using a pitot gauge.

A

Discharge velocity

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

gain or loss of pressure in a hose line or system due to a change in elevation.

A

Elevation pressure

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

pressure created by the velocity of water coming from a discharge opening.

A

Flow pressure

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

the loss of pressure created by the turbulence of water moving against the interior walls, couplings, and connections of the hose or pipe

A

Friction loss

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

line run directly from a hydrant to an attack pumper.

A

Gutter line

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

water pressure due to elevation. For each foot of elevation above the pump the pressure increases by 0.434 psi.

A

Head pressure

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

master stream nozzle mounted to the fly of an aerial ladder.

A

Ladder pipe

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

any variety of heavy caliber water streams delivering 350 gallons or more.

A

Master stream

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

the pressure found in a water distribution system during normal consumption demands, at any moment in time.

A

Normal operating pressure

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

the velocity pressure at which water is discharged from the nozzle.

A

Nozzle pressure

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

counterforce directed against a person or a device holding a nozzle by the velocity of water being discharged.

A

Nozzle reaction

17
Q

small positive displacement pump used to evacuate air from a centrifugal pump housing allowing the pump to receive water.

A

Primer pumps-

18
Q

actual velocity pressure of the water (measured in psi) as it leaves the pump.

A

Pumper discharge pressure

19
Q

a pumper that is between the source pumper and attack pumper. This pumper receives water from the direction of the source pumper and boosts pressure towards the attack pumper.

20
Q

pressure remaining in a water system when water is flowing.

A

Residual pressure

21
Q

an appliance that combines two or more hose lines into one.

22
Q

the pressure exerted by water at rest in a confined vessel available to force the water through pipe, fittings, fire hose, and adapters.

A

Static pressure

23
Q

the pumper connected to the water supply at the beginning of a relay operation.

A

Supply pumper or source pumper

24
Q

the total amount of pressure loss in a hose assembly due to friction loss in the hose and appliances, elevations pressure, or any other factors.

A

Total pressure loss

25
the speed at which water passes a given point.
Velocity
26
the force created by the rapid deceleration of water. Generally occurs from opening or closing a valve too quickly. Damage to pumps, plumbing, and hose lines may occur.
Water hammer
27
an appliance that breaks one hose line into two or more hose lines with one female and two or more male outlets, usually gated.
Wye