Chapter 15 - Apparatus Testing Flashcards
Which formula would be used when correcting net pump discharge?
Pressure correction formula
What two tests are MOST likely to be included in manufacturers’s tests?
Road test and hydrostatic test
According to NFPA® 1911, how often should a pumper be performance tested?
At least once a year
When is pump certification testing conducted?
Before final acceptance of the vehicle
The engine speed check should be conducted under what type of conditions?
No-load
Which category of preperformance tests are fire department personnel MOST likely to be involved in?
Acceptance tests
Which performance test evaluates the overall operation of the engine and the fire pump?
Pumping test
When conducting pump performance tests using a static water source, how deep must the water be?
at least 4 ft
Pump testing should be performed during both:
acceptance tests and certification tests.
Which foam proportioner test verifies the ability of the foam product to conduct electricity?
Foam solution conductivity test
If a flowmeter is used during performance testing, what piece of equipment may be used in place of smooth bore nozzles?
Fog nozzles
A pitot tube is required if a _____ is not used during performance testing.
flowmeter
When completing performance testing, what is most 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.
Which foam proportioner test measures the velocity of light that travels through foam and compares it to a base reading?
Foam solution refractivity test
What is the maximum speed that must be reached by apparatus during road tests?
50 mph
Foam proportioning equipment testing should occur before being placed in service and:
periodically thereafter.
Which test is more important for jurisdictions located at least 2,000 ft (600 m) above sea level?
Pumping engine overload test
The engine speed interlock test is part of which category of preperformance tests?
Pump certification tests
Which apparatus performance tests require that a discharge hoseline from a second pumper be connected to the apparatus being tested?
Internal intake pressure relief valve test
Which 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
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.
When road tests are conducted as part of manufacturers’ testing, what type of conditions should be present?
Flat, dry, paved roads in good condition
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
What is MOST likely to happen if an apparatus fails to comply with bid specifications?
The apparatus will be rejected by the purchaser.
A flowmeter might be used instead of a pitot gauge during a pump performance test, because flowmeters are:
more efficient.
Which foam proportioner test discharges foam at a predetermined flow into a calibrated tank for a specific period of time?
Foam concentrate pump discharge volume method
What should be done if the pump fails to reach 22 inches of mercury (-75 kPa) during the vacuum test?
Remove the apparatus from service until repairs can be made.
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
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
Which test is performed to ensure that the pumps and associated piping are capable of withstanding high pressure pumping demands?
Hydrostatic testing
In addition to yearly testing as required by NFPA® 1911, when should pumper performance be tested?
Whenever the apparatus has undergone major pump or powertrain repair
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.
Which pieces of equipment are evaluated for air leaks using a vacuum test?
Priming device, pump, and intake hose
According to NFPA® 1911, all gauges used for service testing must be calibrated within _____ of testing.
60 days
Which test is performed in a three-part sequence and may be completed while the pump is still set up after the pumping test?
Pressure control test
Which dangerous substance should be monitored for during service testing?
Carbon monoxide
Who is in charge of performing pump certification tests?
Independent testing organizations
Which factor would be MOST important to consider when correcting net pump discharge pressure for apparatus testing?
Friction loss in the intake hose
Which foam proportioner test checks the volume of foam concentrate that is drawn through the system?
Foam concentrate displacement method
What piece of equipment is used to determine engine speed during performance testing?
Tachometer
