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38 Cards in this Set
- Front
- Back
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____ ____ are test conducted after a fire apparatus has been put into service to determine if its performance meets predetermined specifications ar standards.
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Performance Test
pg 330 pump ops |
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NFPA 1901 calls for annual _____ _____ of fire apparatus pumps. Fire pump are water pumps with a rated capacity of 250 GPM or greater at 150 psi net pump pressure that are mounted on a fire apparatus and used for firefighting purposes.
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Servic Testing
pg 330 pump ops |
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The performance tests for fire pumps do not just test the pump; they test the netire pumping system which includes the following: (4)
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1. The engine
2. Transmission 3. Pump 4. related accessories and devices used in operating the pumping system pg 330 pump ops |
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Which NFPA regulates the actual conduct of the performance testing of fire pumps?
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NFPA 1911, Standard for the Inpection, Testing, and Retirement of In-Service Automotive Fire Apparatus
pg 330 pump ops |
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Engine-driven accessories should not be functionally disconnected or otherwise rendered inoperative during the annual performance test. The following devices are permitted to be turned off or at least not operated during the pump performance test: (7)
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1. Aerial Hydraulic pump
2. Foam Pump 3. Hydraulic-driven equipment (other than a hydraulic driven line voltage generator) 4. Winch 5. Windshield wipers 6. Four-way hazard flashers 7. Compressed-air foam system compressor pg 331 pump ops |
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When conducting performance tests on fire pumps, the fire apparatus should use the _____ ____ only. Although not preferred, front- or rear-mounted intakes may be used in conjuction with side intakes suction(s) for all pumps that provide flows of ____ GPM or greater.
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Side Intakes should only be used
Front- or Rear-mounted intakes may used for pump with flow of 1500 GPM or greater pg 331 pump ops |
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______ is defined as a cessation of proper functioning or performance. Other defects in the performance of the engine or the pump should be documented as well, and minor defects should be corrected immediately if possible.
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Failure
pg 331 pump ops |
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Prior to the commencement of any performance tests on fire apparatus pumps, the following environmental conditions must be determined and recorded prior to and immediately agter the pump performance testing: (3)
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1. Ambient air temperature
2. Water Temperature 3. Atmospheric pressure pg 331 pump ops |
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NFPA 1911 specifies that tests must be conducted when the ambient air temp is between ___ F and ___ F.
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0 degrees F and 110 degrees F
pg 331 pump ops |
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______ ____ ____ is the temperature of the surrounding medium and usually refers to the temperature of the air in which a structure is situated or a device operates.
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Ambient air temperature
pg 331 pump ops |
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NFPA 1911 specifies that water temperature should be between ___ degrees F and ___ degrees F.
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35 to 90 degrees F
pg 331 pump ops |
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Water temperature extrems are even more important. Warm water, usually defined as water at a temperature greater than ___F is more likely to _______ inside the pump and may result in a loss of up to ____ GPM in flow rate.
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>90 degrees F
>is more likely to cavitate inside the pump > up to 500 GPMs in flow rate pg 331 pump ops |
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To correct local atmospheric pressure readings to sea level, add __ inche(s) of Hg for every ____' of elevation at the site.
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1 inch of Mercury for every 1000' of elevation
pg 331 pump ops |
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The test site should be located along an improved roadway or on solid ground where the water is from __' to __' below grade.
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4' to 8' below grade
pg 331 pump ops |
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It should be possible to reach the water from the pump intake with not more __' of hard suction hose with the strainer submerged at least 2' and with no humps in the hose.
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20' of hard suction
pg 331-332 pump ops |
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A poor test site can result in as much as ___ to ___ GPM of lost flow rate.
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150 to 500 GPM of lost flow rate
pg 332 pump ops |
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The ____ ____ _____ is an organizaiton, office, or indivdual responsible for enforcing the requirements of a code or standard, or for approving equipment, materials,an installation , or a prcedure.
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Authority having Jurisdiction (AHJ)
pg 332 pump ops |
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The lift is the vertical height that water must be raised during a drafitng operation, as measured from the ?
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from the surface of a static source of water to the center line of the pump intake.
pg 332 pump ops |
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The maximum lift is the greates difference in elevation at which the fire apparatus can draft the required quantity of water under te established physical characterstics of the operation. These characteristics will take into account the following consederations: (7)
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1. The design of the pump
2. The adequacy of the engine 3. The condition of the pump and the engine 4. The size and condition of the suction hose and strainers 5. The elevation of the pumping site above sea level 6. The atmoshperic conditions 7. The temperature of the water pg 332 pump ops |
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A vacuum of 1 inch of Hg is equally to a negative pressure of ______ psi.
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3.049 psi
pg 332 pump ops |
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If you use a test pit, make sure that the usable pit capacity is at least __ gallons for every __ GPM of the pump.
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10 gallons for every 1 GPM of the pump
pg 332 pump ops |
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To ensure accurate and consistent readings, Pitot tubes should be fixed in the center of the stream, with end of the tube located away from the end of the nozzle by a distance that is equal to _____ of the nozzle diameter.
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Half of the nozzle diameter
pg 334 pump ops |
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The first performance test is to check the governed engine speed. If the engine speed is not within +/- __ rpm of the governed speed when the fire apparatus was brand new, this problem must be corrected before proceeding with the additional pump test.
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+/- 50 rpm
pg 334 pump ops |
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Check the alternator tension and the battery charge to ensure that they will provide enough electrical power to allow up to ___ seconds of uninterruped primer operation during the vacuum and priming tests.
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45 seconds
pg 334 pump ops |
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A ____ ____ is a device that allows the bypass of fluids to limit the pressure in a system.
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Relief Valve.
pg 335 pump ops |
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A test of the ____ ____ indicators should be made to verify that they operate in the cab and on the driver/operators's panel indicate correct pump status when the pump is shifted from road mode to pump mode.
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Pump shift indicator
pg 335 pump ops |
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Pressure gauges should be checked at a minumum of three points, including __ psi, ___ psi, and ___ psi. Any gauge that is off by more than __psi must be reclaibrated, repaired, or replaced.
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150psi, 200psi, 250psi
any gauge that is off by more than 10psi pg 338 pump ops |
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____ ____ need to be checked individually, using a hose stream with a smooth-bore tip and a Pitot tube to measure actual flow.
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Flow meters
pg 338 pump ops |
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Any flow meter whose accuracy is off by more than __% must be recalibrated, repaired, or replaced.
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10 %
pg 338 pump ops |
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When a fire apparatus is new, the pump must be able to develop a vacuum of __ in. Hg, unless the altitude is greater than ____', in which case the vacuum attained is permitted to be less than this by 1" for each 1000'. The vacuum inside the pump or suction hose should not drop in excess of ___ in Hg in ___ minutes.
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should develop 22 in. Hg
should not drop in excess of 10 in Hg in 5 minutes pg 341 pump ops |
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____ ___ and improperly adjusted ____ ____ are two of the biggest sources of problems on the vacuum test.
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Leaking Gaskets and Improperly adjusted Pump Packing
pg 344 pump ops |
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For pumps that operate at less than 1500 GPM the priming device should be able to create the necessary vacuum in ___ seconds to lift water 10' through 20' of suction hose.
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30 seconds
pg 344 pump ops |
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The priming device on pumps of 1500 GPM or larger should be able to create the necessary vacuum in ___ second to lift water 10' through 20' of suction hose.
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45 seconds
pg 344 pump ops |
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In testing the pump, three variable factors come into play, they are?
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1. Pump speed
2. Net Pump Pressure 3. Pump discharge rate pg 348 pump ops |
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___ ____ ____ is the sum of the discharge pressure and the suction lift converted to psi or kPa when pumping at draft, or the difference between the discharge pressure and the intake pressure when pumping at a hydrant or other source of water under positive pressure.
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Net Pump Pressure
pg 349 pump ops |
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The pump shold be subjected to a pumping test of at least ___ minutes in duration. Allow the pump, transmission, and engine to warm up for approximately __ minutes prior to beginning the pump tests.
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45 minutes in duration
warm up for 10 minutes prior to beginning the pump test pg 349 pump ops |
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A complete set of readings should be taken and recorded a minimum of ___ times during the 20-minute test for 100% rated capacity, a minimum of ____ during each 10-minute test for 70% capacity and 50% capacity.
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5 times for 100% and 2 times for 70% and 50% capacity
pg 349 pump ops |
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The pressure control device, a relief valve, or pressure governor located o the pump panel should be tested at ___ psi, ___ psi, ____ psi intervals.
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150 psi, 90 psi, and 250 psi
pg 354 pump ops |
