Pumps and Piping Test 3

Tapped holes used with screwed-in eye-bolts should have a minimum depth of ____ times the bolt diameter

1 1/2

The capacity range of come-alongs is ____ tons

1/2 to 6

Custom-fabricated spreader and equalizer beams should be tested at ____ percent of their rated capacity

125

A chain sling should be discarded if any portion of the chain is worn by ____ percent or more

15

OSHA requires that a hook be replaced if the throat has opened ____ percent or more from its original size

15

The pressure-relief (safety) valve used with a low-pressure steam boiler will discharge steam at a pressure of about ____ psi

15

One psi is equal to ____ inches of water column

27.72

If design pressure for a new installation is 200 psi, the hydrostatic test pressure is ____ psi

300

A hook that is point-loaded can carry about ____ percent of the rated load

40

The amount of latent heat released when 5 pounds of steam condenses to water at sea level is ____ Btus

4850

When testing a drain pipe in a high-rise structure, test only ____ feet at a time

50

The amount of latent heat required to change one pound of water to steam at sea level is ____ Btus

970

Which of the following is NOT a common cause of cavitation?

A blocked discharge pipe

Thermostatic traps are used at the outlet of each terminal unit in ____

A two-pipe steam system with a gravity return

Steam boilers ____

Are partially filled with water

A strainer should be installed ____

Before the steam trap

In the steam cycle, water is evaporated in the ____

Boiler

When removing a pump from a system, ____ each pipe as it is disconnected

Cap or seal

Installing new impeller rings requires the installation of new ____

Case rings

Dredging and other marine work requires ____ slings because they withstand corrosion better

Chain

In reciprocating valves, the fluid is kept moving in one direction by the ____

Check valves

Metering pumps pump exact amounts of fluids because of ____

Close tolerances

Conductivity tests use amperage to find flaws in ____ of pipe

Coatings

Always follow ____ for lockout and tagout procedures

Company policy and procedure

Three basic types of cracks can occur in weld metal: transverse, longitudinal, and ____

Crater

The term D/d ratio refers to the relationship between the sling and the ____

Diameter of the surface the sling is wrapped around

In the diaphragm pump, the connecting rod runs between the diaphragm and a(n) ____

Eccentric

As part of the pretest field inspection of a piping system, ____

Ensure that all equipment not to be tested is locked and tagged out

To level loads when the legs of a sling are unequal, a(n) ____ can be used

Equalizer plate

A one-handed signal that is given with the fist in front of the body and the thumb pointing toward the signaler's body means _____

Extend the boom

Mixing rigging hardware of different lifting capacities is okay, as long as the capacity of one of the hardware items exceeds the weight of the load

False

Screw-type plate clamps are used for vertical lifting of plates only

False

The ratchet jack can lift heavier loads than the screw jack or hydraulic jack

False

The borescope most commonly used by industrial mechanics is the ____ borescope

Flexible

A common type of valve used to turn on or shut off the flow of steam is a ____ valve

Gate

In the steam cycle, condensation occurs mainly in the ____

Heat exchanger

The latent heat of condensation is the ____

Heat given up by steam in changing back to water

The pressure gauge in a test should be connected directly to the ____ of the system or component

High point

Positive-displacement pumps are used to pump ____ liquids

High-viscosity

The gear pump is used mainly in ____ systems

Hydraulic

The most useful general-purpose jack is the ____ jack

Hydraulic

The part of a centrifugal pump that increases the speed of the fluid is the ____

Impeller

Foreign matter trapped in a weld metal is called a(n) ____

Inclusion

Which of the following will NOT correct cavitation?

Increasing the flow rate

Any time a pump becomes excessively noisy or starts vibrating, you should ____

Inspect it for malfunctions

If a change occurs in a pump's performance, it should be ____

Inspected to determine the reason

Field pretest inspections may be written up as a(n) ____

Inspection punchlist

A steam trap that has only two moving parts is a(n) ____ trap

Inverted bucket

In plunger pumps, the plunger is ____ the stroke

Longer than

Centrifugal pumps are basically ____ pumps

Low-pressure

Head pressure tests are performed on ____

Low-pressure systems

In a hydrostatic test it is best to fill the system from the ____

Lowest point

When the signal person gives the dog everything signal, the operator is expected to ____

Make no machine movement

Temperature readings of the pump bearings should be compared to the ____

Manufacturer's specifications

One of the slings best suited for situations where the load is abrasive, hot, or tends to cut is a ____ sling

Metal mesh

In a pneumatic pressure test, connections are checked for leaks with a ____

Mix of soap and water

To perform a service test, close the last valve in the system and turn on the service to that system at ____

Normal operating pressure

It is commonly considered good practice to install new ____ as any unit is being reassembled

O-rings and gaskets

In helical screw gear pumps, the center rotor drives ____

One or more idler rotors

Using chemicals to clean pipe systems is sometimes called ____

Pickle and passivate

Cleaning a system can be done by ____

Pigging

The three types of reciprocating pumps are ____

Piston, plunger, and diaphragm

A multistage centrifugal pump increases the speed of the fluid until the desired ____ is reached

Pressure

The shell surrounding the shaft, bearings, packing gland, and impeller of a centrifugal pump is the ____

Pump casing

In order to remove the rotating element, the ____ must be separated

Pump casings

Some pump bearings are equipped with oiling systems that use gear-type oil pumps. These units will require that the reservoir and pump be ____ during assembly

Removed

The pump in a hydraulic system would be a ____ pump

Rotary

The problem of wear in slurry pumps is solved by ____

Rubber lining or hardened metal

Slings are attached together using ____

Shackles

Ultrasonic examination can be used to detect ____

Shrinkage cavities

If it is apparent that the crane operator has misunderstood a hand signal, the signal person should ____

Signal the operator to stop

As a minimum requirement, each pressure gauge must be calibrated every ____

Six months

A mixture of solid particles suspended in fluid is a ____

Slurry

Long loads are supported during lifting operations with ____

Spreader beams

The most common type of impeller used in gear pumps is the ____

Spur gear

A device that purges the system of condensate and gases without releasing steam is a ____

Steam trap

Heat exchangers used in steam systems are usually ____ heat exchangers

Steam-to-water

In external gear pumps, the direction of the drive shaft rotation determines the ____

Suction port

All pumps take in fluids from the ____

Suction side

The total heat of steam is the ____

Sum of the sensible heat and latent heat of steam above 32 degrees

Magnetic particle tests are sensitive to ____

Surface and near-surface flaws

Arc strikes are small, localized points where ____ occures away from the weld

Surface melting

Liquid penetrant tests detect ____

Surface openings

To perform a flow test, check for leaks with the ____

System in operation

A(n) ____ is used to keep the load under control

Tag line

A pyrometer can be used to check the ____ of a pump

Temperature

Pretest requirements include identifying _____

Test boundaries

Applicable codes are indicated on the ____

Test report

Which of the following statements about a compound block and tackle is correct?

The more sheaves the blocks have, the greater the load capacity

All of the following are true EXCEPT

The size of the shackle is determined by its pin size

Which of the following statements about lifting lugs is correct?

They are used primarily for vertical lifts, but some are also used for angled lifts if so designed

The procedure used by industrial maintenance mechanics to determine to determine what is wrong with a pump is ____

Troubleshooting

When the problem has been diagnosed, the ____ can quickly suggest a possible cause and solution

Troubleshooting chart

One of the nuts on one side of the impeller will usually have left-handed threads so that the rotation of the shaft helps to keep it tight

True

A chopper impeller would be unsafe in a system containing ____

Unstable fluid

Low-pressure steam boilers operate at pressures ____

Up to 15 psi

What action is signaled by tapping your fist on your head, then using regular hand signals?

Use main hoist

Both light beams and ultrasound beams are ____

Waves

Shaft runout should be measured with a ____

dial indicator

The safe working load of a rigging hook is accurate only when the load is suspended from the _____ of the hook

saddle