Chapter 12 - Relay Pumping Operations Flashcards
1
Q
Effective relay operations require pre_______, t_____ and coordinating of ___ participants.
A
- preplanning
- training
- all
2
Q
According to local policy and \_\_\_\_\_\_\_ availability, a variety of apparatus, hose and equipment may be used to establish a relay pumping operation. A. firefighters B. equipment C. rigs D. all of the above
A
B. equipment
3
Q
Do only pumpers participate in relay operations or can you use ANY apparatus with a pump as long as it has an ADEQUATELY sized pump?
A
NO, as long it has an adequately size pump
4
Q
What is the pumpers name in a relay operation who takes water from the hydrant of source and pumps it under pressure to the next rig? A. water supply pumper B. relay pumper C. fire attack pumper D. rescue pumper
A
A. water supply pumper
5
Q
Which pumper in the relay should have the largest PUMPING capacity? A. water supply pumper B. relay pumper C. fire attack pumper D. rescue pumper
A
a. water supply pumper
6
Q
What is another name for source pumper (in some jurisdictions?)
A
water supply pumper
7
Q
WHEN would you use a smaller capacity pumper (then another in the relay) in a relay as a water supply pumper?
A
due to order of arriving on scene
8
Q
If you do not use the largest capacity pumper as the water supply pumper in a relay, (AVOID) what will it limit?
A. number of personnel on scene
B. amount of pumpers that can be used
C. overall fire flow
D. how many connections you can make to the source
A
C. overall fire flow
9
Q
What is the pumper or pumpers connected within the relay that receive water from the source pumper or another relay pumper, raises the pressure, and then supplies water to the next apparatus called? A. water supply pumper B. relay pumper C. fire attack pumper D. rescue pumper
A
B. relay pumper
10
Q
Due to what ability can a relay pumper be of smaller capacity than the water supply pumper in a relay?
A. to use acquired energy of previous pumpers in relay
B. to pump more water because they are in pressure
C. both A and B
D. none of the above
A
A. to use acquired energy of previous pumpers in relay
11
Q
What pumping apparatus is 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? A. water supply pumper B. relay pumper C. fire attack pumper D. rescue pumper
A
C. fire attack pumper
12
Q
Some fire departments, especially those that have occasion to make many LONG hose lays, employ a hose ________ to assist in relay pumping.
A
tender
13
Q
Can hose tenders sometimes be equipped with a fire pump that allows the apparatus to participate in the pumping operation ONCE the supply line is laid? YES or NO
A
YES
14
Q
Hose tenders are sometimes equipped with a fire pump that allows the apparatus to participate in the pumping operation. WHEN are they allowed to do this?
A. once the first apparatus is in place
B. when there is no other option
C. when they have 4 fire fighters onboard
D. once the supply line is laid
A
D. once the supply line is laid
15
Q
How long (or more) of LDH is it possible for a hose tender to carry?
A
a mile or more
16
Q
Packed in a traditional hose bed or a mechanically operated reel, what size hose does a hose tender carry?
A
LDH
17
Q
Most hose tenders carry a wide assortment of v____s, m_______s and other a________ for use in relay pumping operations.
A
- valves
- manifolds
- appliances
18
Q
LDH is divided into \_\_\_\_ and \_\_\_\_ categories. A. attack, supply B. attack, damaged C. red, white D. short, long
A
A. attack, supply
19
Q
The amount of water required at an incident and the distance between the incident scene and water source will determine if THIS is needed.
A
relay operations
20
Q
Can a relay operation supply the TOTAL volume of water at an incident? YES or NO
A
YES
21
Q
Can a relay operation be used to supplement a municipal water supply at an incident? YES or NO
A
YES
22
Q
What will have a MAJOR impact on the design of the relay system?
A. how many personnel will be on scene
B. how many pumpers there are
C. the amount of water required
D. which direction the first pumper is facing
A
C. the amount of water required
23
Q
What is the SECOND most important consideration on a relay system? A. how many personnel will be on scene B. how many pumpers there are C. the amount of water required D. the distance the relay will be
A
D. the distance the relay will be
24
Q
Friction loss is directly affected by the ______ of water being flowed, the d_______ of hose, and the ______ between pumpers.
A
- amount
- diameter
- distance
25
If the amount of flow through a relay operation needs to be increased, depending on the size of the supply hose and fire flow requirements, at least one of the three conditions must be met:
1. the _____ of the supply hose or the number of _______ must be increased.
- diameter
| - hoselines
26
If the amount of flow through a relay operation needs to be increased, depending on the size of the supply hose and fire flow requirements, at least one of the three conditions must be met:
2. the pump ______ pressure of the pumpers involved in the relay must be _________.
- discharge
| - increased
27
If the amount of flow through a relay operation needs to be increased, depending on the size of the supply hose and fire flow requirements, at least one of the three conditions must be met:
3. more pumpers must be added to the relay to overcome ________ loss or e________.
- friction
| - elevation
28
Is it impractical to replace existing layout of supply hose with LDH, shutting down the existing layout and restarting the operation in relay pumping? What is more conceivable with pumpers or tenders not already in use?
- NO
| - lay additional hoselines
29
If pumpers increase their pump discharge in a relay operation, will it necessarily increase the volume of water in the system? YES or NO
NO
30
Centrifugal pumps are rated to pump at their VOLUME capacity at ___ psi at draft.
150
31
If you pump OVER 150 psi on a centrifugal pump (its volume capacity), what will happen to its volume capability? (relay)
reduced proportionately
32
Depending on the _____ of the hose lay and the _____ of water flowed, a point will be reached where increased pressure will not increase volume in a relay.
- length
| - volume
33
```
Elevation pressure is not affected by the amount of water being moved, only by the ___________.
A. topography
B. pressure loss
C. pumping discharge
D. hose lay
```
A. topography
34
To increase flow in a relay operation, place additional ______ in the system.
pumpers
35
What will shorten the length of hose each pumper must supply and allow pumpers to operate at lower pressures and maximum flows within a relay operation?
adding more pumpers
36
```
In order to add a pumper to the relay operation, what should have been added at the onset to avoid shutting down the water supply?
A. siamese
B. several extra hoselines
C. inline valve
D. another nozzle
```
C. inline valve
37
When would relay operations use LDH to supply a LOW FLOW rate in a relay operation?
A. each time
B. when they feel it necessary
C. never
D. where the distance between each pumper exceeds the length of supply hose carried
D. where the distance between each pumper exceeds the length of supply hose carried
38
When relay operations use LDH to supply a LOW FLOW rate in a relay operations, usually the distance between each pumper exceeds the length of supply hose carried. What could additional pumpers do without actually take part in pumping?
add additional lines
39
What residual pressure consideration do the relay pumping charts in the book build in to their calculations? __ psi
20 psi
40
```
The charts for maximum water distance per pumper in the book base their 2½ and 3 inch hose on a discharge pressure of ___psi and their 4 and 5 inch hose on a discharge pressure of ___psi.
A. 30, 20
B. 150, 125
C. 190, 120
D. 200, 185
```
D. 200, 185
41
```
Fire department pumpers are rated to flow their maximum volume at 150 psi. How about at 70% of their maximum volume?
A. 100 psi
B. 200 psi
C. 300 psi
D. 175 psi
```
B. 200 psi
42
```
Fire department pumpers are rated to flow their maximum volume at 150 psi. How about at 50% of their maximum volume?
A. 100 psi
B. 250 psi
C. 300 psi
D. 175 psi
```
B. 250 psi
43
What is this formula? P = R + 1
----
D
relay distance
44
P = R + 1
---- What is the P?
D
total number of pumpers needed
45
P = R + 1
---- What is the R?
D
relay distance
46
P = R + 1
---- What is the D?
D
distance from table 12.1
47
P = R + 1
---- What should answers be
D rounded to?
UP to the nearest whole number
48
```
When relaying long distances, the hose lays between each pumper should be ______ as possible. In cases with multiple diameter of hose are used, the ______ between pumpers must be adjusted accordingly.
A. long, distance
B. short, hose
C. equalized, distance
D. short, appliances
```
c. equalized, distance
49
SAFE and EFFICIENT operations depends on proper planning, coordination and communication. What does this describe?
relay operations
50
When drafting from a static source, which pumper in a relay operation might need to pump at a higher discharge pressure then other pumpers?
water supply pumper (source pumper)
51
When drafting from a static source and relay pumping, the water supply pumper needs to develop higher discharge pressures to compensate for the e_____ lost due to friction loss in the suction hose as well as the e______ required to overcome the height and the lift.
- energy
| - energy
52
When drafting from a static source and relay pumping, the water supply pumper needs to develop higher discharge pressures to compensate for the energy lost due to friction loss in the suction hose as well as the energy required to overcome the height and the lift. It does NOT have the ______ pressure at the intake that the relay pumpers receive that aids in preventing pump cavitation.
residual
53
```
For their own safety and the efficient operation of the relay, everyone must understand that the overall capacity of the system is determined by the ________ pump and _______ diameter of hose used in the relay.
A. largest, largest
B. largest, smallest
C. smallest, largest
D. smallest, smallest
```
D. smallest, smallest
54
Once the source pumper (supply) has established water supply in a relay, what should they open or where should they allow water to discharge from until the first relay pumper is ready for water?
- open a discharge
| - discharge from a dump line
55
If in a relay, the source pumper using a static water supply does not keep water moving through the pump, the result might be 2 things?
- overheating
| - loss of prime
56
If in a relay, the source pumper using a static water supply does not keep water moving through the pump, the result might be overheating or loss of prime. Open WHAT to move water by overflowing the tank?
tank fill
57
When the relay pumper is waiting for water from the source pumper, they should have a dump line or discharge open and the pump IN or OUT of gear?
OUT
58
When the source pumper and relay pumper are ready, the discharge supply line going to the relay pumper is opened while the ____ line is closed in coordination.
dump
59
When the source pumper and relay pumper are ready, the discharge supply line going to the relay pumper is opened while the dump line is closed in coordination. If you open the discharge too quickly, a sudden loss of _____ to the pump may occur which may result in a loss of _____ if pumping from draft.
- water
| - prime
60
```
After water is flowing from the source pumper to the relay pumper, what should be built?
A. water pressure
B. a house
C. hoselines
D. none of the above
```
a. water pressure
61
```
As water fills the supply line from the source pumper to the relay pumper, the air will be forced out of WHAT?
A. the holes in the hose
B. the open dump line or discharge
C. the bleeder on the source pumper
D. all the above
```
B. the open dump line or discharge
62
When should you engage the pump on the relay pumper?
when water is flowing steady from the dump line or discharge
63
The relay pumper may engage the pump BEFORE receiving water from the source pumper IF:
- water is ________ from the onboard tank through the pump or
- if the delay in receiving water from the source pumper is very b____
- circulating
| - brief
64
```
As a relay pumper, what is it advisable to maintain intake pressure at?
A. 10 to 20 psi
B. 5 to 10 psi
C. 20 to 30 psi
D. it does not matter
```
C. 20 to 30 psi
65
Once the pump discharge pressure on the relay pumper has reached the desired pressure, with water being discharged, no further adjustments should be required. TRUE or FALSE
TRUE
66
```
Once a relay operation is flowing water at the desired pressure, the driver of the attack pumper should set the pressure ______ at the appropriate level. (pressure psi or rpm)
A. governor
B. levels
C. release valve
D. all of the above
```
A. governor
67
Changes in flow occur in relay operations and cumulative effects of pressure increase. What device plays and important role in the safety of relay operations?
pressure governors
68
In relay operations, what should the attack pumper be set in?
pressure mode (psi)
69
In relay operations, what should the relay pumpers be set in?
rpm mode
70
Operating in pressure mode will allow the regulator to attempt to maintain a specific pump pressure by adjusting engine ___ as required. (pressure governor)
rpm
71
What valve should be set to 10 psi above the static pressure of the water system it is attached or 10 psi above the discharge pressure of the previous pumper in a relay?
adjustable INTAKE relief valve
72
```
The adjustable intake relief valve should be set to __ psi above the static pressure of the water system it is attached or __ psi above the discharge pressure of the previous pumper in a relay?
A. 12, 10
B. 10, 10
C. 20, 12
D. 5, 10
```
B. 10, 10
73
```
To establish a stable operating condition, ATTACK pumpers equipped with and adjustable intake relief valve should be set between __ and __ psi.
A. 12, 10
B. 10, 10
C. 50, 75
D. 50, 100
```
C. 50, 75
74
If an attack line is shut down, or the amount of discharge changes from the attack line of a relay, friction loss in the supply line _____ and the residual pressure _______.
- decreases
| - increases
75
If an attack line is shut down, or the amount of discharge changes from the attack line of a relay, friction loss in the supply line decreases and the residual pressure increases. The INTAKE relief valve will operate, allowing the water to do WHAT?
dump from the valve
76
If the intake relief valve operates and dumps water from the valve, pressures in the supply line and pressures in the relay will return to WHAT?
their original settings
77
When would a intake relief go from open to close? (relay)
when increase demand to the attack lines are needed (more water)
78
When increased demand to the attack lines are needed in a relay, ______ residual pressure will in turn close the intake pressure relief valve.
reduced
79
If a pump has an automatic pressure governor, will it automatically open and close an internal relief valve to compensate for the demands of more or less water flowing from the attack pumper on a relay? In what mode must they be in?
- YES
| - pressure
80
Should the driver of the attack pumper expect large variations in pressure relay operations? YES or NO
NO, only small
81
As long as the intake pressure does not go below 20 psi, the driver of the attack pumper should not attempt to correct MINOR fluctuations. TRUE or FALSE
TRUE
82
What will happen if the driver of the attack pumper constantly attempts to correct MINOR fluctuations of pressure (without going below 20 psi)? (relay)
A. effect other pumpers in relay
B. result in constantly varying pressures
C. drivers overcompensating for changes that will be delayed in long relays
D. all of the above
D. all of the above
A. effect other pumpers in relay
B. result in constantly varying pressures
C. drivers overcompensating for changes that will be delayed in long relays
83
During long relay operations, smaller capacity pumps may require ______ residual pressures as the relay operation stabilizes.
higher
84
Use ______ to communicate during relay operations.
radios
85
Why would radios be effective for relay operations but hamper or create excessive volume of?
radio traffic
86
Can they assign a specific radio frequency for relay operations? YES or NO
YES
87
Once operations have been established and water supply is flowing, should there be a need for ALOT of communications in relay pumping? YES or NO
NO
88
If no method of communication is available in relay pumping, what might be done?
send ff between apparatus
89
When the need for relay pumping has ended, THIS operation should discontinue FIRST.
the relay operation itself
90
Should the attack pumper or the supply pumper be shut down first when discontinuing a relay operation?
attack pumper
91
What should each driver do first when shutting down a relay, starting with the attack pumper?
slowly decrease the throttle
92
What should each driver do second, after they slowly decrease the throttle, when shutting down a relay, starting with the attack pumper?
open dump line valve
93
What should each driver do last, after they slowly decrease the throttle and open dump line valves, when shutting down a relay, starting with the attack pumper?
disengage pump
94
Should you close all valves slowly or quickly when shutting down a relay to prevent water hammer at any point in the system?
slowly
95
After they slowly decrease the throttle, open dump line valves and disengage the pump, when shutting down a relay, starting with the attack pumper, they can also do what to their onboard water tanks?
refill
96
Should the drivers of all apparatus in a relay operation communcate to eachother and the WATER SUPPLY OFFICER for safety? YES or NO
YES
97
```
Use of standardized t______ throughout the relay operation is important for consistency.
A. technology
B. treatment
C. throttles
D. terminology
```
D. terminology
98
```
What relay method may be employed to provide an alternate water supply system?
A. open relay method
B. closed relay method
C. dual water supply method
D. quick stop method
```
A. open relay method
99
```
What method consists of deploying portable folding drop tanks at each intake for pumpers in the relay operations?
A. open relay method
B. closed relay method
C. dual water supply method
D. quick stop method
```
a. open relay method
100
What eliminates the pressure surges and inconsistent supply sometimes found in closed relays?
operating from a folding drop tank
101
```
What relay method requires NO adapters or other appliances to connect the intake hoses in the system?
A. open relay method
B. closed relay method
C. dual water supply method
D. quick stop method
```
A. open relay method
102
Should you place the hard sleeve and the supply hose right next to eachother in a portable folding drop tank in order to avoid turbulence? (open relay method) YES or NO
NO - opposite sides
103
Each ___ department with its neighboring department (joint operations) should have _______ policy for the use of relay pumping.
- fire
| - standard
104
On what kind of basis should standard policy relay operations be practiced within the dept. as well as with mutual aid partners?
regular
105
```
In some area, _____ organizations have formulated procedures that include the setup of relay operations by an Incident Commander.
A. local
B. department
C. regional
D. all of the above
```
C. regional
106
```
In some area, regional organizations have formulated procedures that include the setup of relay operations by an Incident Commander. Upon request, a predetermined ____ force assignment is dispatched to initiate a relay operation ________ of other companies already operating on scene.
A. task, in front of
B. hard, in front of
C. task, before
D. task, independent
```
D. task, independent
107
In some area, regional organizations have formulated procedures that include the setup of relay operations by an Incident Commander. Upon request, a predetermined task force assignment is dispatched to initiate a relay operation independent of other companies already operating on scene. These task force units must do WHAT together and have compatible equipment?
train
108
In relay operations, depending on the preferences of local jurisdictions, when using MDH, 2½ or 3 inch, only one line is laid. TRUE or FALSE
FALSE, multiple lines
109
In relay operations, depending on the preferences of local jurisdictions, when using LDH, 4 or 5 inch, it often requires using multiple lines. TRUE or FALSE
FALSE, one line
110
What NFPA standard would you refer to for further information on relief devices?
NFPA, Standard 1962, Standard for the Inspection, Care, and Use of Fire Hose, Couplings, Nozzles and the Service Testing of Fire Hose
111
What is referred to as a relay relief valve?
pressure relief valves (relay pumping)
112
What appliance is inteneded to enhance firefighter safety and reduce the possibility of damage to the pump and other water supply components that may be caused by water hammer when valves are operated too quickly or intake pressures rise dramatically?
pressure relief valves (relay relief valves)
113
How many types of intake pressure relief valves are there?
2
114
Supplied by the manufacturer, this is an INTEGRAL part of the pump intake manifold.
intake pressure relief valve
115
What is screwed onto the pump intake connection and is an add-on device?
intake pressure relief valve
116
```
In some cases, intake pressure relief valves are ______ to allow a predetermined amount of pressure into the fire pump.
A. opened
B. made
C. preset
D. molded
```
C. preset
117
```
Many of the screw-on intake pressure relief valves are also equipped with a ____ valve that allows the water supply to the pump to be shut off.
A. butterfly
B. gate
C. metal
D. stop
```
B. gate
118
_______ valves on the intake pressure relief valve allow air to bleed off as the incoming supply hose is charged.
bleeder
119
Bleeder valves on the intake pressure relief valve allow air to bleed off as the incoming supply hose is charged. This is especially important on LDH when ______ amounts of air are pushing through the supply as it is being filled.
large
120
The introduction of large amounts of ____ into the pump may cause a loss of d______ pressure, possible water _______, and air at the nozzle possibly shutting down the operation.
- air
- discharge
- hammer
121
```
_______ valves may be located directly on the intake piping to the pump itself.
A. intake
B. bleeder
C. quarter turn
D. all of the above
```
B. bleeder
122
What position must the bleeder valve be in when operating from draft and the intake hose is connected to an inlet with a manual shutoff valve. open or closed?
closed
123
If a relay is waiting for other pumpers to arrive for required flow can set up an initial operation of ______ volume and ______ spacing with inline relay valves placed in the relay line awaiting the other pumpers.
- lesser
| - greater
124
```
If a relay is waiting for other pumpers to arrive for required flow can set up an initial operation of lesser volume and greater spacing with THESE placed in the relay line awaiting the other pumpers.
A. extra hose
B. sampsons
C. firefighters
D. inline relay valves
```
D. inline relay valves
125
An i____ r____ v____ is placed along the length of a supply hose that permits a pumper to connect to the valve to boost pressure AND VOLUME in the hose in a relay operation.
inline relay valve
126
```
An inline relay valve is placed along the length of a supply hose that permits a pumper to connect to the valve to boost pressure AND VOLUME in the hose in a relay operation, _______ it is already flowing, without ________ the water supply.
A. before, water hammering
B. before, interrupting
C. after, interrupting
D. while, freezing
```
C. after, interrupting
127
```
What can be used in a LDH relay to supply more than one pumper and break the LDH into two or more supply lines?
A. discharge manifold
B. siamese
C. gated wye
D. triamese
```
A. discharge manifold
128
Discharge manifolds come in only ONE design. TRUE or FALSE
FALSE
129
Typically, a discharge manifold comes with _ LDH inlet and a combination of _ _ _ and _ _ _ discharges.
- 1
- LDH
- MDH
130
Can you use multiple smaller lines as supply in a relay to support different attack pumpers or can you only use LDH?
YES you can use smaller lines
131
```
Based on WHAT can you use multiple smaller lines as supply to multiple attack pumper in a relay?
A. hose type used
B. length of hose
C. couplings used
D. fire flow requirements
```
D. fire flow requirements
132
Anywhere pressurized water systems are insufficient for flow requirements, WHAT can be used?
relay operations
133
Would you ever use a hydrant, even if it was farther away, to draw from a stronger, better main? YES or NO
YES
134
Being familiar with necessary e_______, training and pre_______ are all needed to achieve relay pumping operations s______ and e_______.
- equipment
- preplanning
- safely
- efficiently
