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62 Cards in this Set
- Front
- Back
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. Each pump impeller in a housing is called a
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Stage
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Pumps used as priming pumps are known as
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Rotary / Gear
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The spiral chamber in which the velocity given to water by the impeller is converted into pressure is called?
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Volute
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A _______________ valve is used to relive pressure in hose lines
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Drain
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A __________________ pump must be primed with an external priming device
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Centrifugal
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When priming, water enters the pump because ____________________
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Atmospheric pressure forces it into the pump
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A ____________________ gage is calibrated to read positive and negative pressures.
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Compound
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A _________________ valve opens when pressure rises above the high pressure.
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Relief
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Blades on an impeller are called
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Vanes
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A device that limits pressure surges is called a
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Pressure Gov.
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What type of flowmeter is maintenance free?
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Spring Probe
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What allows a truck to move and pump?
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Power Take-Off
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Centrifugal fire pumps may make use of what type of pressures
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Positive Intake Pressures
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The ____________________ system provides a circulating feed from several mains
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Grid
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The _________________________ supplies individual hydrants.
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Distributor
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______________________ is caused by corrosion and rust.
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Encrustation
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Pressure not used to overcome friction loss is called, ________________?
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Residual
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A hydrant with the largest capacity will be connected to a
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Primary Feeder
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Pressure created by a column of water due to elevation is know as _________________ pressure.
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Head
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Available flow from hydrants is estimated by determining the % drop between the _________________ and _________________ pressures.
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Static and Residual
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The part of total pressure not used to overcome friction or gravity while pushing water thru fire hose etc. is called _________________ pressure.
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Residual
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The operation in which each impeller of a centrifugal pump discharges into a common outlet is called,
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Parallel
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A good method for determining lift in a fire department is ….
For each _______ of vacume, water will rise _________ __________. |
One Inch, One Foot
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When the flow thru a hose line rises from 100 gpm to 400 the FL rises ________ times.
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16
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________________ is used to find the flow pressure at a discharge opening.
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Pitot tube and gage
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17 inches of mercury on an intake gage= __________ ft. of lift.
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17
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Prior to changing from tank water to an external source make sure to do what?
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Bleed the air
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Which primer utilizes the ventui principle?
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Exhaust Primer
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If the priming device does not discharge water within ______ seconds for a 1500 gpm pumper, stop operation and check the trouble shooting procedures.
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45 Seconds
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When lowering a strainer into water to draft it must be placed at least _________ inches below the water.
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18 inches
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A 5in. hose would be expected to flow the same amount as ?
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4 2 1/2 in. hoses.
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When using 2 ½ or 3 in. hoselines to supply a pumper from a hydrant, lines can’t be longer than? _________________ feet
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300 feet
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NFPA requires a pump must pump it’s rated capacity at __________ feet of lift?
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10 feet
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What is the min. water depth in feet to draft from? ___________ feet
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4 feet
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Priming devices on centrifugal pumps are usually ?
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Small positive displacement pumps
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What are two types of relay pumping?
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Max distance, and constant pressure
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Relay operations should be shut down from the ________________ first.
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Fire Scene
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When relay pumping- the smallest pumper should be
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... at the fire scene
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The collapse zone around a building should be
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1 to 1 1/2 times the height of the bld.
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. Page 272 IFSTA says- When pumping to a standpipe system, a DE should allow ___________________ FL for the standpipe system itself.
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24 psi
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Pump pressures above ___________ psi may damage the standpipe system.
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200 psi
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When drafting the strainer should be placed _____ in. above the bottom to prevent whirl pooling.
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12 inches
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Maintain ____ psi to ____ psi on the discharge to avoid loosing a prime when nozzles are temporarily shut down.
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30 to 40 psi
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What is the max cutting force at the notch for the TNT Cutter?
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109,098 psi
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What is the weight of the TNT Cutter?
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41 lbs
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TNT Spreaders, what is the weight?
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54.9
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TNT Spreaders, what is the max spread force?
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20,026 psi
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TNT Ram, what is the weight?
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46.3 lbs.
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TNT Ram, what is the amount of the first push force?
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51,500 lbs.
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What is the air hammers normal operating pressure range?
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150 / 200 psi.
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When using the air hammer, when would you use the highest pressure and what is that pressure?
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Cutting door hinges @ 250 psi
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What are the air hammer’s blows per min.
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2200 blows per min.
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What is the air hammer’s length and weight?
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10 inches / 5 lbs.
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The __________ are used for modern car, van, truck and bus extrication.
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T bits
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_________ bits are specially designed for vehicle extrication
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Curved
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What is the first thing you should do if you are trapped in a structure?
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Activate the emergency alert function of the portable radio
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What is the third thing you should do if you are trapped in a structure?
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Flashlight UP
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88 cubic feet of air in an air cylinder will last you approx. ______ min?
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60 min.
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The three 9-volt batteries on the SEMS unit will last you approx. _____ hours
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20 hours
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The three-tone alarm is approx. ______ dba’s through the two speakers?
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95 dba's
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Once the PASS is activated it will sound for approx. _____ hours.
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3 hours
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The Scott Easy Flow regulator gives approx. _____ lpm of oxygen?
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160 lpm's
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