PT Flashcards
STUDY guide PT II
One disadvantage of liquid penetrant
inspection is that:
a. penetrant materials may cause drying
and cracking of the skin.
b. large subsurface discontinuities with
openings to the surface will not form
indications.
c. it can only be used with nonferrous
material.
d. the materials are only available in
aerosol spray cans.
a. penetrant materials may cause drying
and cracking of the skin.
- Which of the following is not a physical
property associated with penetrant
materials?
a. Solvent resistance.
b. Flash point.
c. Viscosity.
d. Chemical inertness
a. Solvent resistance.
- The removal of smeared metal by chemical
processes is called:
a. grit or sand blasting.
b. machining.
c. etching.
d. quenching.
c. etching.
- A standard classification for a type of
developer is:
a. water soluble.
b. water washable.
c. nonfluorescent.
d. solvent removable.
a. water soluble.
- A penetrant inspection cannot find:
a. surface porosity.
b. surface cracks.
c. an internal cavity.
d. a surface forging lap.
c. an internal cavity.
- Which of the methods listed below is most
applicable for detecting fine, tight surface
cracks?
a. Visible dye, water washable.
b. Visible dye, postemulsifiable.
c. Fluorescent, water washable.
d. Fluorescent, postemulsifiable.
d. Fluorescent, postemulsifiable.
- The term used to describe the total time
that penetrant remains on the workpiece is:
a. immersion.
b. drain.
c. dwell.
d. presoak.
c. dwell.
- Developer assists in the detection of
discontinuities by:
a. providing a contrasting background.
b. emulsifying the penetrant bleedout.
c. providing a clean surface.
d. providing a dry surface
a. providing a contrasting background.
- Difficulties with removal of a postemulsifiable penetrant during the rinse operation can be overcome by:
a. reapplying a coating of emulsifier.
b. using conditioned (soft) water during
the washing operation.
c. cleaning, then completely reprocessing
the part using a longer emulsification
time.
d. increasing the water temperature during
the washing operation Ref B;Ref C
c. cleaning, then completely reprocessing
the part using a longer emulsification
time.
- Excessive removal of penetrant may result
in:
a. undetected discontinuities during
evaluation.
b. an excessive background that inhibits
the evaluation process.
c. the need to apply the developer twice
to obtain significant bleedout.
d. small, tight cracks that are easily
detected on parts with a smooth
surface.
a. undetected discontinuities during
evaluation.
- Which of the following is an advantage of
a fluorescent water washable penetrant
system compared to a fluorescent
postemulsifiable penetrant system?
a. Water washable is superior for testing
critical in service parts.
b. Water washable has fewer processing
steps.
c. Only wet developer may be used with
postemulsifiable penetrants.
d. Water washable penetrants will more
readily detect fine, tight cracks in
weldments.
b. Water washable has fewer processing
steps.
- Which of the following is not an advantage
of postemulsifiable fluorescent penetrants?
a. High sensitivity level to detect very
fine defects.
b. They are easily removed with water
after proper emulsification dwell time.
c. They are easily removed from sand
castings after proper emulsification
dwell time.
d. They have higher tolerance to
variations in the removal process when
compared to water washable
penetrants.
c. They are easily removed from sand
castings after proper emulsification
dwell time.
- When using the visible, solvent removable process, after the penetrant dwell time, excess penetrant is removed by:
a. spraying solvent on the part and then wiping with a clean, dry rag or paper towel.
b. wiping off excess penetrant with a clean, dry rag or paper towel, moistening the part with solvent andrewiping the part.
c. wiping off excess penetrant with a clean, dry rag or paper towel, moistening a clean cloth with solvent and rewiping the part.
d. wiping off excess penetrant with a clean, dry rag or paper towel, then rewiping with a cloth soaked with solvent.
c. wiping off excess penetrant with
a clean, dry rag or paper towel,
moistening a clean cloth with solvent
and rewiping the part.
- When using a fluorescent, postemulsifiable
penetrant, the best emulsification time is:
a. 10 s.
b. 5 s.
c. 2 to 3 s.
d. determined by experimentation
d. determined by experimentation
- Which type of developer is generally
considered the most sensitive for locating
fine discontinuities?
a. Solvent suspended.
b. Water soluble
c. Water suspended.
d. Dry powder.
a. Solvent suspended.
- Which of the following penetrant systems
is the least sensitive?
a. fluorescent, postemulsifiable
b. visible, solvent removable.
c. fluorescent, solvent removable.
d. fluorescent, water washable.
b. visible, solvent removable.
- One method for applying dry developer to
a localized area of a large part is with:
a. a brush.
b. a powder bulb.
c. an aerosol can.
d. an immersion tank.
b. a powder bulb.
- Prewash and postwash stations are an
advantage when using which of the
following penetrant methods?
a. Visible, lipophilic postemulsifiable.
b. Fluorescent, hydrophilic
postemulsifiable.
c. Visible, water washable.
d. Fluorescent, lipophilic
postemulsifiable.
b. Fluorescent, hydrophilic
postemulsifiable.
- The specific gravity of wet developer is
measured with a:
a. developer gage.
b. hydrogage.
c. balance scale.
d. hydrometer.
d. hydrometer.
- Which of the following describes the
comparator that is used to monitor the
process performance of the penetrant
system?
a. A panel with one half chrome plated
containing five crack centers and the
other half grit blasted.
b. A cracked aluminum block with a
groove in the center.
c. A chrome plated panel with fine cracks
across the face to a depth equal to the
plating thickness.
d. Ceramic coated block with fine cracks
extending around the entire panel.
a. A panel with one half chrome plated
containing five crack centers and the
other half grit blasted.
- Ultraviolet light intensity is measured with:
a. a digital or analog UV-A meter.
b. a photographic light meter.
c. an infrared meter.
d. a standard white light meter.
a. a digital or analog UV-A meter.
- What instrument is used to check
hydrophilic emulsifier concentration?
a. A hydrometer.
b. A capillary fill barometer.
c. A centrifuge tube.
d. A refractometer.
d. A refractometer.
- A group of nearly rounded indications
located in an area that transitions between
thick and thin sections of aluminum
castings is known as:
a. shrinkage cracks.
b. gas holes.
c. laminations.
d. cracks due to heat treating.
a. shrinkage cracks.
- The penetrant performance characteristic
known as sensitivity is defined as the:
a. the contrast between an indication and
the background.
b. ability to produce a visible indication
from a small, tight linear discontinuity.
c. volume percentage of penetrant that
remains in a discontinuity after
processing.
d. ability to enter a discontinuity to form
an indication. Ref B
b. ability to produce a visible indication
from a small, tight linear discontinuity.
- Processing a part with developer residue
remaining from a previous penetrant
inspection may result in:
a. an enhanced background contrast.
b. a more rapid formation of indications.
c. a greatly reduced formation of
indications.
d. the elimination of a second application
of developer.
c. a greatly reduced formation of
indications.
- For intermediate dwell times, applying
fresh penetrant 15 min before removal
assists the process by increasing the:
a. rate of evaporation.
b. time required for the removal
operation.
c. rate of penetration.
d. sensitivity of the penetrant.
c. rate of penetration.
- How does an increase in temperature affect
the viscosity of a penetrant?
a. It becomes more viscous and decreases
in flow rate.
b. It becomes less viscous and decreases
in flow rate.
c. It becomes more viscous and increases
in flow rate.
d. It becomes less viscous and increases
in flow rate.
d. It becomes less viscous and increases
in flow rate.
- Repeated or cyclic loads below the yield
strength of a material can cause:
a. service cracking.
b. fatigue cracking.
c. intergranular cracking.
d. thermal cracking.
b. fatigue cracking.
- Grinding checks or cracks are caused by:
a. localized overheating.
b. a slow feed rate.
c. unequal heating or cooling.
d. rapid cooling from high temperatures
a. localized overheating.
- Elongated inclusions found in bar stock are
called:
a. seams.
b. laps.
c. stringers.
d. contaminants.
c. stringers.
- An advantage of the postemulsification
fluorescent penetrant process is that it:
a. is very good on rough surfaces such as
sand castings.
b. has fewer operations than other
penetrant processes.
c. can be used on anodized surfaces.
d. can be used to detect wide, shallow
discontinuities.
d. can be used to detect wide, shallow
discontinuities.
- What comparison standard has control over
the depth and quantity of cracks?
a. A stainless steel test panel.
b. A cracked aluminum test block.
c. A ceramic test block.
d. A grit blast panel.
a. A stainless steel test panel.
- Compared to a certified Level I inspector,
a Level II inspector:
a. can process all forms of a product.
b. is authorized to approve all penetrant
procedures.
c. requires more formal training hours
and work experience.
d. can determine the acceptance criteria
for a part.
c. requires more formal training hours
and work experience.
- A limitation on materials used to inspect
nickel alloy welds in a nuclear or pressure
vessel system is that the penetrant
materials should have:
a. sulfur and halogen residual of 10% or
less by weight.
b. sulfur, chlorine and fluorine residual of
1 % or less by weight.
c. chlorine and halogen residual of 5% or
less by weight.
d. halogen and fluoride residual of 10%
or less by weight
b. sulfur, chlorine and fluorine residual of
1 % or less by weight.
- A weld discontinuity that appears star shaped with small indications emanating from a central point is a:
a. burst.
b grinding crack.
c. crater crack.
d heat affected zone (HAZ) crack.
c. crater crack.
- Multiple round or nearly round indications
scattered on a weld are the result of:
a. crater pits.
b. undercut.
c. porosity.
d. weld laps.
c. porosity.
- Which of the following would not be the
cause of a nonrelevant indication?
a. Penetrant on the inspection table.
b. An improperly cleaned surface.
c. A corrosion crack.
d. Penetrant trapped in the threads of a
part.
c. A corrosion crack.
- The periodic checks performed to assure
that the penetrant testing system is
functioning are called:
a. process control tests.
b. maintenance tests.
c. certification tests.
d. performance evaluations.
a. process control tests.
- A relevant indication in a casting may be
caused by:
a. a burst.
b. a crater crack.
c. laminations.
d. porosity.
d. porosity.
- The relative size of a surface discontinuity
is estimated based on the indication intensity and the:
a. amount of bleedout
b. size and shape.
c. direction of bleedout
a. amount of bleedout
- Which of the following is a nonrelevant
indication found during penetrant
inspection?
a. Marks on the part due to penetrant on
the inspector’s hands.
b. A press fit insert ring in the bore of a
shaft.
c. Linear indications on a heat treated
weldment.
d. Dry developer residue
b. A press fit insert ring in the bore of a
shaft.
- A visual method used as acceptance
criteria for a part uses:
a. sized wires.
b. a calibrated scale.
c. a testing and monitoring panel.
d. referenced photographs.
d. referenced photographs.
- The purpose of a penetrant system monitor
is to provide:
a. a method of estimating the cost of
inspection.
b. verification of the overall processing
system performance.
c. standardization for performing process
controls.
d. the means to reject test objects.
b. verification of the overall processing
system performance.
- Using a weld standard for interpretation of
indications provides:
a. reliable acceptance criteria.
b. an accurate method to determine repair
costs.
c. the format for a test report.
d. the means to reject linear indications
a. reliable acceptance criteria.
- Dry developer is checked for fluorescent
contamination by:
a. comparing the in-use developer to new
material.
b. processing a testing and monitoring
panel.
c. a laboratory examination for chemical
composition.
d. viewing under an ultraviolet light for
fluorescent specks.
d. viewing under an ultraviolet light for
fluorescent specks.
- Ultraviolet lights over a fluorescent
penetrant wash station are used to:
a. verify a uniform coating of penetrant
has been applied to the part.
b. verify the emulsifier covers the entire
surface.
c. monitor the removal of surface
penetrant.
d. check the cleanliness of parts before
processing.
c. monitor the removal of surface
penetrant.
- An advantage of inspecting forgings with
the penetrant process is that:
a. it can detect any type of discontinuity
associated with forgings.
b. there are no limitations to the part size
or shape.
c. forging scale does not interfere with
the test.
d. penetrant materials do not have any
adverse affects on any alloy that is
forged.
b. there are no limitations to the part size
or shape.
- Discontinuities that may be found in
aluminum extrusions are:
a. porosity and inclusions.
b. laminations.
c. cracks.
d. laps and seams.
d. laps and seams.
- Which of the following discontinuities are
associated with forgings?
a. Tears.
b. Cracks.
c. Bursts.
d. Blow holes.
c. Bursts.
