Driver Operator Handbook 3Rd Edition Chapter 12

Front 1

Most commonly, driver operators and fire department Pumpers lay the supply hose and participate in the_______ ______.

Back 1

, relay operation

Front 2

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

Back 2

Water Supply Pumper

Front 3

Water supply Pumpers should be the apparatus with the _______pumping capacity.

Back 3

Largest

Front 4

Using two or more Pumpers to move water over a long distance, water discharge from one pumper flows through hoses to the inlet of the next Pumper and so on.

Back 4

Relay operation

Front 5

A water supply pumper is also known as a_______ Pumper.

Back 5

Source

Front 6

Pumper or Pumpers connected with in the relay that receive water from the source pumper or another relay pumper, raises the pressure, and then supplies water to the next apparatus.

Back 6

Relay Pumper

Front 7

Pumping apparatus located at the fire scene that receives water from the relay and is responsible for supplying the attack lines and appliances required for fire suppression

Back 7

Fire attack Pumper

Front 8

Term used within the incident command system for mobile piece of apparatus that has the primary function of supporting another operation ; examples include a water tender that supplies water to Pumpers or a fuel tanker that supplies fuel to other vehicles

Back 8

Tender

Front 9

Relay supply hose of 3 inch to 6 inches in diameter; used to move large volumes of water quickly with a minimum number of Pumpers and personnel

Back 9

Large-diameter hose for LDH

Front 10

The need for a relay operation is based on what factors?

Back 10

Amount of water required and the

Distance between the incident scene and the water source

Front 11

The amount of water required will have a_________ impact on the design of the relay system.

Back 11

Major

Front 12

The_________ of the relay is the second important.

Back 12

Distance

Front 13

_________ _________ is directly affected by the amount of water being flowed, the diameter of the hose, and the distance between Pumpers

Back 13

Friction loss

Front 14

When pumping at pressures higher than_________ PSI the volume capability of the pump is reduced proportionately.

Back 14

150

Front 15

___________ _________ is not affected by the amount of water being moved, only by the topography.

Back 15

Elevation pressure

Front 16

Increasing flow during a relay operation may be accomplished by placing additional_________ in the system.

Back 16

Pumpers

Front 17

Adding Pumpers to a relay operation will shorten the length of hose each Pumper must supply and allow Pumpers to operate_________ pressures and maximum flows within the relay operation.

Back 17

Lower

Front 18

What are the percentages that a Pumper rated to flow at 150 psi, 200 PSI and 250 psi

Back 18

Maximum volume, 70% and 50 %

Front 19

Total number of Pumpers formula

Back 19

Front 20

When relaying long distances, the hose Lays between each Pumpers should be as_________ as possible.

Back 20

Equalized

Front 21

A relay pumping operation begins with the largest capacity pumper working from the_________ _________.

Back 21

Water source

Front 22

The overall capacity of a relay system is determined by the smallest_________ and smallest_________ hose used in the relay.

Back 22

Pump and diameter

Front 23

Relay Pumpers should be waiting for water with a_________ _________ or discharge open in the pump out of gear.

Back 23

Dump line

Front 24

Secured hose line that is used to handle excess water during a relay operation.

Back 24

Dump line

Front 25

The relay pumper May engage the pump before recieving water from the Water Source if water is circulated from the onboard tank through the pump, or if the delay in receiving water from the source pump is _________

Back 25

Brief

Front 26

It is advisable for driver operators to maintain an intake pressure of_________ to_________ PSI as a relay Pumper.

Back 26

20 to 30

Front 27

Process of releasing a liquid or gas Under Pressure, such as releasing air from the regulator or cylinder of a self-contained breathing apparatus, or allowing air to escape from a hose line before or during operations.

Back 27

Bleed

Front 28

For relay Pumpers equipped with an adjustable intake relief valve, they should be set to_________ PS I above the static pressure of the water system to which it is attached or 10 psi above the discharge pressure of the previous pumper in the relay.

Back 28

10

Front 29

Attack Pumpers equipped with an adjustable intake valve should be set between_________ and_________ PSI to establish a stable operating condition.

Back 29

50 and 75

Front 30

You should not attempt to correct minor fluctuations as long as the initial pressure does not drop below_________ PSI.

Back 30

20

Front 31

During long relay the operations smaller capacity pumps may require _________ residual pressure as the relay operation stabilizes.

Back 31

Higher

Front 32

Like all fire ground operations, relay pumping requires the use of effective, clear_________ for success.

Back 32

Communications

Front 33

When the need for Relay pumping has ended, the operation should be discontinued from the_________ _________ first.

Back 33

Fire scene