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Hydraulics > Chapter 9 Fire Department Pumper Testing > Flashcards

Chapter 9 Fire Department Pumper Testing Flashcards

1
Q

What tests make up preservice test? 3

A

manufacturers test
pump certification test
acceptance test

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2
Q

How often should service tests be conducted?

A

yearly or after extensive pump or power train repair

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3
Q

In order to ensure that preservice test are performed the municipality should do what?

A

require in apparatus that specification

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4
Q

most pumping fire apparatus are designed to meet requirements of ____

A

NFPA 1901

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5
Q

what is the NFPA standard for wildfire fire apparatus

A

NFPA 1906

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6
Q

what two test makeup the manufacturers test? 2

A

road test

hydrostatic test

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7
Q

while performing the manufacturers test, NFPA 1901 requires the apparatus to accelerate from __ to ___ in ___

A

0-35

25s

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8
Q

while performing manufacturers test, the apparatus must achieve a top speed of at least ___

A

50mph

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9
Q

while performing the manufacturers test, the apparatus must come to a full stop from 20 miles an hour within __

A

35ft

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10
Q

which are superior standards performance-based specifications or engineer base specifications

A

performance-based specifications

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11
Q

what does the hydrostatic test determine

A

whether the pump and piping can withstand normal operating pressures

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12
Q

NFPA 1901 requires that pump to be hydrostatic retested at ___psi for ___

A

250 PSI

three minutes

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13
Q

during the hydrostatic test what lines/valves should be open/closed/capped

A 
fill line (tank refill), tank to pump line, bypass line valves closed
 discharge valves should be open and capped
 Intake valves should be close or capped
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14
Q

While the hydrostatic test determines if the pump and piping were constructed properly. the pump certification test determines what?

A

if the pump performs properly

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15
Q

what tests are performed during the certification test (6)

A 
1 pumping test
2 pumping engine overload test
3 pressure control system test
4 priming device test
5 vacuum test
6 water tank to pump flow test
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16
Q

what are the conditions under which a pump certification test must be conducted 4

A
  • must be carried out from a static supply source
  • strainer and must be submerged at least 2 feet
  • water may be no more than 10 feet from pump
  • 20 feet of hard suction should be used
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17
Q

describe the pumping test 750 gpm and above capacity

A 
100% @ 150 for 2h
70% @ 200 for 30min
50% @250 for 30min
 volume, discharge pressure, intake pressure, RPM recorded every 15 minutes
 average = rated capacity
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18
Q

described the pumping test for engines below 750 GPM capacity

A

100% @150 for 30min
75% @200 for 10min
50% @250 for 10 min
volume, discharge pressure, intake pressure, RPM recorded every 10 minutes

19
Q

NFPA 1901 requires pumping engine overload test on engines with a rated capacity of over ___

A

750gpm

20
Q

describe the pumping engine overload test

A

100% of it’s rated capacity @ 165 psi for 10 minutes

volume, discharge pressure, intake pressure, RPM should be recorded three times

21
Q

how should the engine be prepared for priming device test

A

all intakes must be capped or plugged

all discharge caps must be removed

22
Q

priming device test, seconds to achieve prime
less than 1250 GPM
greater than 1500 GPM

A

30s

45s

23
Q

how does the auxiliary intake larger than 4 inches affective priming test?

A

allowed an additional 15 seconds

24
Q

during the priming test the pump must obtain a maximum vacuum of at least

A

22 inches of mercury

25
Q

what is the purpose of the vacuum test

A

to ensure there are no air leaks within the piping, pump, and intake hoses

26
Q

what does NFPA 1901 state about the tank to pump piping?

A

< 500gpm capacity… flow 250gpm from tank

>500gpm capacity… flow 500gpm from tank

27
Q

what test are not required or outlined by NFPA 1901?

A

acceptance test

28
Q

the requirements for service testing are contained in what NFPA standard

A

1911

29
Q

what test are required by NFPA 1911 for service testing

6

A 
engine speed check
 vacuum test 
pumping test
 pressure control test
 gauge and flowmeter test
 tank to pump flow test
30
Q

after scribing a mark with a hose and company should that line move more than ___ the test should be stopped and hose replaced

A

3/8”

31
Q

what is the first test that should be performed during service testing

A

engine speed check

32
Q

what test is performed to check the prime device, pump, and hard intake hose for air leaks

A

vacuum test

33
Q

when performing the vacuum test, what is the threshold for vacuum loss?

A

no more than 10 inches of vacuum should be lost in five minutes

34
Q

what is the primary difference between the pumping service test and the pump certification test?

A

the duration of various steps

35
Q

what test assures the fire department and insurance rating companies that the apparatus will perform as expected?

A

pump certification test

36
Q

described the service pumping test

A

150psi for 20min…100% rated volume …capacity test
(while setting discharge/flow engine can’t reach 80% peak)
200psi for 10min…. delivering 70% rated volume
250psi for 10min…. delivering 50% rated volume

recored DP, IP, RPM, flow every 5min
oil pressure/coolant temp/transmission temp optional

37
Q

service test - pressure control test

part one

A

100% volume @150 psi
set pressure control device
close all flowing valves over 3-10s
psi should not rise > 30 psi

38
Q

what is the purpose of the tank to pump flow test

A

to ensure that the piping between the water tank in the pump is sufficient to supply the minimum amount of water specified by NFPA 1901

39
Q

what is the minimum depth of water for a static source used for pump testing? what is the maximum distance the surface of the water may be below the level of the pump?

A

4 feet

10 feet

40
Q

what is the total time duration for preservice pump certification test

A

three hours

41
Q

was the total duration of pumping time for the service pumping test

A

50 minutes

42
Q

Service test- what is the maximum amount of any discharge pressure gauge may vary from the master pressure gauge

A

10 psi

43
Q

Service Test-Pressure control test part 2

A

flow 100% rated capacity at net DP of 150psi
reduce throttle so DP= 90psi
set pressure control device to 90psi
close all lines one at a time 3-10s
all lines closed DP should not increase more than 30psi

44
Q

Servic Test - Pressure control device part 3

A

flow 50% rated capacity at DP of 250psi
set pressure control device to 250psi
close all lines, one at time 3-10
all lines closed, DP should not increase more than 30psi

Hydraulics (15 decks)

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