Chapter 9 Fire Department Pumper Testing Flashcards
What tests make up preservice test? 3
manufacturers test
pump certification test
acceptance test
How often should service tests be conducted?
yearly or after extensive pump or power train repair
In order to ensure that preservice test are performed the municipality should do what?
require in apparatus that specification
most pumping fire apparatus are designed to meet requirements of ____
NFPA 1901
what is the NFPA standard for wildfire fire apparatus
NFPA 1906
what two test makeup the manufacturers test? 2
road test
hydrostatic test
while performing the manufacturers test, NFPA 1901 requires the apparatus to accelerate from __ to ___ in ___
0-35
25s
while performing manufacturers test, the apparatus must achieve a top speed of at least ___
50mph
while performing the manufacturers test, the apparatus must come to a full stop from 20 miles an hour within __
35ft
which are superior standards performance-based specifications or engineer base specifications
performance-based specifications
what does the hydrostatic test determine
whether the pump and piping can withstand normal operating pressures
NFPA 1901 requires that pump to be hydrostatic retested at ___psi for ___
250 PSI
three minutes
during the hydrostatic test what lines/valves should be open/closed/capped
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
While the hydrostatic test determines if the pump and piping were constructed properly. the pump certification test determines what?
if the pump performs properly
what tests are performed during the certification test (6)
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
what are the conditions under which a pump certification test must be conducted 4
- 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
describe the pumping test 750 gpm and above capacity
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
described the pumping test for engines below 750 GPM capacity
100% @150 for 30min
75% @200 for 10min
50% @250 for 10 min
volume, discharge pressure, intake pressure, RPM recorded every 10 minutes
NFPA 1901 requires pumping engine overload test on engines with a rated capacity of over ___
750gpm
describe the pumping engine overload test
100% of it’s rated capacity @ 165 psi for 10 minutes
volume, discharge pressure, intake pressure, RPM should be recorded three times
how should the engine be prepared for priming device test
all intakes must be capped or plugged
all discharge caps must be removed
priming device test, seconds to achieve prime
less than 1250 GPM
greater than 1500 GPM
30s
45s
how does the auxiliary intake larger than 4 inches affective priming test?
allowed an additional 15 seconds
during the priming test the pump must obtain a maximum vacuum of at least
22 inches of mercury
what is the purpose of the vacuum test
to ensure there are no air leaks within the piping, pump, and intake hoses
what does NFPA 1901 state about the tank to pump piping?
< 500gpm capacity… flow 250gpm from tank
>500gpm capacity… flow 500gpm from tank
what test are not required or outlined by NFPA 1901?
acceptance test
the requirements for service testing are contained in what NFPA standard
1911
what test are required by NFPA 1911 for service testing
6
engine speed check vacuum test pumping test pressure control test gauge and flowmeter test tank to pump flow test
after scribing a mark with a hose and company should that line move more than ___ the test should be stopped and hose replaced
3/8”
what is the first test that should be performed during service testing
engine speed check
what test is performed to check the prime device, pump, and hard intake hose for air leaks
vacuum test
when performing the vacuum test, what is the threshold for vacuum loss?
no more than 10 inches of vacuum should be lost in five minutes
what is the primary difference between the pumping service test and the pump certification test?
the duration of various steps
what test assures the fire department and insurance rating companies that the apparatus will perform as expected?
pump certification test
described the service pumping test
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
service test - pressure control test
part one
100% volume @150 psi
set pressure control device
close all flowing valves over 3-10s
psi should not rise > 30 psi
what is the purpose of the tank to pump flow test
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
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?
4 feet
10 feet
what is the total time duration for preservice pump certification test
three hours
was the total duration of pumping time for the service pumping test
50 minutes
Service test- what is the maximum amount of any discharge pressure gauge may vary from the master pressure gauge
10 psi
Service Test-Pressure control test part 2
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
Servic Test - Pressure control device part 3
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
