Chapter 15 Flashcards
When conducting pump performance tests using a static water source, how deep must the water be
4 ft
foam proportioner tests verifies the ability of the foam product to conduct electricity
Foam solution conductivity test
During service testing, personnel should operate the engine throttle slowly in order to help prevent which potentially dangerous situation from occurring
Sudden pressure changes
When conducting pumper performance testing, the air temperature should always be above
0°F
For a pumper with a 1,250 gpm (5 000 L/min) capacity, how quickly must it achieve prime during the priming system performance test
30 seconds or less
If a flowmeter is used during performance testing, what piece of equipment may be used in place of smooth bore nozzles
Fog nozzles
likely to happen if an apparatus achieves results of less than 90 percent of its originally rated capabilities
It will be placed out of service and restored to its original capabilities
The engine speed interlock test is part of which category of preperformance tests
Pump certification tests
A pitot tube is required if a _____ is not used during performance testing.
flowmeter
Who is in charge of performing pump certification tests?
Independent testing organizations
Which test is performed to ensure that the pumps and associated piping are capable of withstanding high pressure pumping demands
Hydrostatic testing
During the tank-to-pump flow test, pumpers with an onboard capacity of greater than 500 gallons (2 000 L) must be capable of flowing at least
500 gpm
foam proportioner tests checks the volume of foam concentrate that is drawn through the system
Foam concentrate displacement method
In addition to yearly testing as required by NFPA® 1911, at what other times should pumper performance be tested?
Whenever the apparatus has undergone major pump or powertrain repair
What piece of equipment is used to determine engine speed during performance testing
Tachometer
What should be done if the pump fails to reach 22 inches of mercury
Remove the apparatus from service until repairs can be made
Foam proportioning equipment testing should occur before being placed in service and
periodically thereafter.
foam proportioner tests measures the velocity of light that travels through foam and compares it to a base reading
Foam solution refractivity test
When road tests are conducted as part of manufacturers’ testing, what type of conditions should be present
Flat, dry, paved roads in good condition
What is the maximum speed that must be reached by apparatus during road tests?
50 mph
What is the purpose of acceptance testing
To demonstrate to the purchaser that the apparatus conforms to all bid specifications at the time of delivery
Which pieces of equipment are evaluated for air leaks using a vacuum test
Priming device, pump, and intake hose
A flowmeter might be used instead of a pitot gauge during a pump performance test, because flowmeters are
more efficient.
Which standard is commonly used as a basis for most apparatus bid specifications
1901
Which of the following factors would be MOST important to consider when correcting net pump discharge pressure for apparatus testing
Friction loss in the intake hose
included in the minimum requirements of NFPA® 1901 for apparatus performance testing
overload test
verifies that the piping between the onboard tank and pump is sufficient to supply the minimum amount of water as specified by NFPA® 1901 and the design of the manufacturer
Tank-to-pump flow test
tests are more important for jurisdictions located at least 2,000 ft (600 m) above sea level
Pumping engine overload test
foam proportioner tests discharges foam at a predetermined flow into a calibrated tank for a specific period of time?
Foam concentrate pump discharge volume method
all gauges used for service testing must be calibrated within _____ of testing
60 days
likely to happen if an apparatus fails to comply with bid specifications?
The apparatus will be rejected by the purchaser.
apparatus performance tests requires that a discharge hoseline from a second pumper be connected to the apparatus being tested
Internal intake pressure relief valve test
dangerous substances should be monitored for during service testing
Carbon monoxide
performed in a three-part sequence and may be completed while the pump is still set up after the pumping test?
Pressure control test
When conducting discharge pressure gauge and flowmeter operational tests, a difference in readings between the flowmeter and pitot gauge must not be more than:
10 percent.
Pump testing should be performed
during both acceptance tests and certification tests
If a jurisdiction seeks special requirements from the manufacturer to ensure that the apparatus will perform as required under local conditions, they may be written into the bid specifications as
performance requirements
