Chapter 12

Question 1

If water source is too remote ___ might be necessary

Answer 1

relay pumping

Question 2

___________ is using two or more pumpers to move water over a long distance by operating them in series

Answer 2

Relay operations

Question 3

A ___________ takes water from a hydrant or static source and pumps it under pressure to the next apparatus in the relay pumping operation.

Answer 3

Water supply pumper or Source pumper.

Question 4

A ________pumper are connected within the relay that receive water from source pumper. or another relay pumper., raise the presssure and then supply next app. These can be small capacity pumps because they receive pressurized water from another pumper.

Answer 4

Relay pumper

Question 5

_________ pumpers are located at the fire scene. the receive water and supply attack lines

Answer 5

Fire attack pumpers

Question 6

Some depts that make many long hose lays may employ a ______tender. This app has a pump and can also carry a ______ or more of hose

Answer 6

hose

mile

Question 7

Hose tenders will store LDH on a ______ hose bed or wound on a mechanical operated _______

Answer 7

traditional

reel

Question 8

LDH: relay supply hose of ____ to _____ inches in diameter.

Answer 8

3 1/2 - 6 inches

Question 9

LDH is divided into _____ and _____ line categories. Each will have diffierent working pressure limitations.

Answer 9

supply and attack

Question 10

Relay pumping is determined by the amount of _____ required at an incident and the _____ between the incident and water source.

Answer 10

water

distance

Question 11

The second important consideration in relay pumping the ______ of the lay.

Answer 11

distance.

Question 12

If flow in a relay needs to be increased one of 3 things needs to happen.

1. The diameter of the supply hose or number of hoselines must be increased.
2. The pump discharge of the pumpers involved needs to be increased.
3. More pumpers must be added to relay

Question 13

Pumpers or hose tenders not in use could lay additional _____ between pumpers already in a relay operation

Answer 13

hose

Question 14

Centrifigal pumps are rated to pump at capacity in draft at _____psi

Answer 14

150

Question 15

If a relay has no inline valves and you want to add pumpers, the water supply must be shut down until the apps are added.

Question 16

Pumpers are rated to flow their maximum volume of _____psi at draft
The flow _____% of maximum volume at 200psi
And flow _____% at 250psi

Answer 16

150 psi
70% at 200psi
50% at 250psi

Question 17

The ______ capacity pumper is at the water source

Answer 17

largest

Question 18

A source pumper does not have the ______ pressure of relay pumpers

Answer 18

residual

Question 19

The overall capacity of a relay system is determined by the _____ pump and the ______ diameter hose

Answer 19

smallest pump
smallest diameter hose

Question 20

once source pumper has established water supply, they should _______ water through a dump line until first relay pumper is ready for water.

Answer 20

discharge

Question 21

Failure of source pumper to keep water moving could result in loss of _______

Answer 21

prime

Question 22

A relay pumper should be waiting for water with a ____line open and the pump out of gear.

Source pumper will then close its dump line and ______open discharge to the supply line

Answer 22

dump

slowly

Question 23

When a relay pumper receives water and a steady flow of water is discharging from the dump line, the pump may now be _____

Answer 23

engaged.

Question 24

A relay pumper may receive water from the source pumper with the pump on if water is circulated from the onboard tank to the pump for a brief time.

Question 25

As a relay pumper intake pressure should be maintained at _______to_____psi

Answer 25

20-30psi

Question 26

once relay water is flowing at desired pressure, the D/O on attack pumper should set the ______ governor at an appropriate level.

Answer 26

pressure

Question 27

Apparatus equiped with pressure governors should be set in the ______mode when acting as attack pumper and _____mode when working as relay pumpers

Answer 27

pressure RPM

Question 28

Relay pumpers should set intake relief valves ____psi above the static pressure or _____psi above discharge pressure of previous relay pumper.

Answer 28

10 10 psi

Question 29

Attack pumpers equiped with adjustable intake relief valves should be set at ____ and _____psi

Answer 29

50 - 75 psi

Question 30

smaller capacity realy pumps may need more _______ pressure in the operation

Answer 30

residual

Question 31

Radio and a _____ may be used for comms during relay ops.

Answer 31

firefighter

Question 32

Shutting down a relay start with the ______pumper

Answer 32

attack pumper

Question 33

an _____relay involves placing a portatank at the inlest of a realy pumper. This helps prevent pressure ______ like in a closed relay operation D/O must be sure to place the hard suction and supply hose in the portatank at _______ ends of the portatank

Answer 33

open surges opposite

Question 34

Sometimes the _____ requests the setup of relay ops. A task force is then dispatched seperate from units already on scene.

Answer 34

IC

Question 35

realy pumping task force teams ____ together

Answer 35

train

Question 36

medium diameter hose is _____to _____

Answer 36

2 1/2 to 3 (remember 3 1/2 inch hose is LDH.

Question 37

when using MDH medium diameter hose, more than one ______ is laid.

Answer 37

hose line

Question 38

NFPA 1962 speaks info on realy relief valves which enhance firefighter _____ and reduce damage to the fire _______

Answer 38

safety pump

Question 39

Two types of intake pressure relief valves. One is supplied by the pump manufacturer and is a part of the pump intake manifold and the other is _____ on the pump intake connection. Many of the screw on intake pressure relief valves are also equipped with a _____ valve. There is also a ____ valve to remove air.

Answer 39

screwed on gate bleeder

Question 40

When operating from draft, the bleeder valves must be _______

Answer 40

closed.

Question 41

If there is more than one attack pumper, the really pumper before will have a discharge ________

Answer 41

mainfold

Question 42

Using hydrants from greater distances to access larger ______ for large fires may be necissary

Answer 42

mains