Chpt 13

Question 1

A ____ can be one of the most complex of these options because it requires at last two pumpers and sometimes multiple pumpers, to form a relay

Answer 1

Relay pumping operation

Question 2

To establish any type of relay, you must have a minimum of

Answer 2

Two fire pumpers, hoselines, and personnel

Question 3

One fire pumper is located at a water source; it is called the

Answer 3

Source pumper

Question 4

The other fire pumper is positioned at the fire scene; it is called the

Answer 4

Attack pumper

Question 5

Any other fire pumpers that are between these two fire apparatus and are positioned to maintain flow pressure in the relay are called

Answer 5

Relay pumpers

Question 6

The _____ is the most important pumper in the relay because it is located at a water source and supplies the water to the entire incident

Answer 6

Source pumper

Question 7

The source pumper should consist of the _______ fire pump of the units assigned to the relay operation, thereby ensuring that it can provide the maximum amount of water

Answer 7

Largest fire pump

Question 8

Is usually the first unit on the scene of an incident, and it’s operation will dictate how much water will be needed based on how many gpms the fire attack requires

Answer 8

Attack pumper

Question 9

If the _____ is being positioned in an area that has limited access, it is generally recommended that a supply line be laid down from an open area to a limited access point

Answer 9

Attack pumper

Question 10

Ultimately the _____ serves as the workhorse at the incident; it provides water to all of the hoselines that are attacking the fire

Answer 10

Attack pumper

Question 11

Are the fire apparatus that are placed in the middle of the relay pumping operation

Answer 11

Relay pumpers .

Question 12

Is the primary path of travel for the water to get from one pumper to another in a relay operation

Answer 12

Fire hose

Question 13

In addition, no matter which size hose you are using to supply water from the source pumper, each pumper in the relay operation and the attack pumper be equipped with an

Answer 13

Intake relief valve

Question 14

An ____ will prevent the incoming water supply from reaching an excessively high pressure, which might damage the pump and possibly interrupt the relay operation

Answer 14

Intake relief valve

Question 15

The length of a relay pumping operation is primarily determined by the distance between the _______

Answer 15

Water source and the incident

Question 16

Generally, _____ represents the best option for relay pumping operations

Answer 16

LDH

Question 17

a ____ is a supply hoseline that is brought to the scene by a fire pumper from the water source

Answer 17

Forward lay

Question 18

Hose can also be laid backward from the attack pumper to a water source or to another fire pumper in the relay line; both are examples of

Answer 18

Reverse lay

Question 19

One fire pumper may lay hose into the scene while another fire pumper lays hose out from the first engines couplings to the water source this approach is called a

Answer 19

Split lay

Question 20

Although a good rule of thumb is that no relay operation should extend for more than _______, it can be longer as long as you keep adding pumpers

Answer 20

800 ft

Question 21

When two fire pumpers use different threads on their couplings for hose, _____ allow for both pumpers to connect to the same hose

Answer 21

Adapters

Question 22

When the sizes of different hose lines differ _____ are needed to connect the mismatched lines

Answer 22

Reducers

Question 23

An ____ is any other component that you can flow water through

Answer 23

Appliance

Question 24

One type of relay pumping operation is called a

Answer 24

Calculated flow relay

Question 25

This type of relay is the most common as it uses actual ____ to determine the quantity of water required

Answer 25

Flow calculations

Question 26

The relay pumping operation starts at the source pumper and is where the _______ fire pump should be located

Answer 26

Largest

Question 27

The ______ is generally the first pumping apparatus to arrive on the scene of the fire

Answer 27

Attack pumper

Question 28

A ____ is considered ready when the supply hose to the pumper and the discharge hose to the next pumper are connected

Answer 28

Relay pumper

Question 29

As the driver operator of a relay pumper, you must monitor the incoming residual pressure from either the source pumper or another relay pumper; your goal is to maintain

Answer 29

20 psi of residual pressure

Question 30

Many fire departments that regularly use relay pumping operations because of issues related to limited water supply will use a ___in long hose lays

Answer 30

Relay valve

Question 31

A ___ lets you hook up into the relay without shutting down the entire operation

Answer 31

Relay valve

Question 32

In this process, water is pumped from a water source through hose under pressure to the apparatus engaged in fire suppression efforts.

Answer 32

Relay pumping operations

Question 33

Can be as simple as one fire pumper at a pond or lake and the other fire pumper at the fire scene, or as complex as the use of multiple pumpers to supply water over a long distance to the fire operation

Answer 33

Relay pumping operations

Question 34

Greatly increase the effectiveness of relays by allowing one LDH to supply two to four medium size lines with water

Answer 34

Manifolds

Question 35

It requires the driver operator of the source pumper to obtain from the attack pumper the flow required for the fire operations; the driver must then calculate the friction loss for each hose layout in the relay and add 20 psi for the residual pressure at the attack pumper.

Answer 35

Calculated flow relay

Question 36

The pumper driver operator in this type of relay sets the pump discharge pressure to 175 or 80 psi depending on the size of the supply line, and maintains this pressure for the duration of the relay pumping operation

Answer 36

Constant pressure relays

Question 37

Most fire pumpers have 500 to 1000 gal water tanks, which allow them to supply the two 1 3/4 in hoselines for ______ before running out of water.

Answer 37

2 1/2 to 5 minutes

Question 38

Pumpers are generally added to an existing relay pumping operation when there is not enough ______ to meet the demands of the attack pumper

Answer 38

Pressure or flow

Question 39

Depending on the nature of the relay pumping operation, the last pumper in the series may supply two attack pumpers. If this is the case, then the last pumper may use a ________ that is, one LDH that is split into four or five medium size hoselines that provide water supply for multiple attack pumpers

Answer 39

Manifold