AMPP CIP Level 1 – Basic Coating Inspector Theory Study
Guide PDF | Certification Exam Prep & Practice Questions.
1. During a pre-job conference for coating a steel tank, the inspector is asked to verify that the
contractor's proposed abrasive meets the project specification of 'SSPC-AB1 Class 3'. The
contractor provides a bag labeled 'slag abrasive, 20-40 mesh.' Which action is most appropriate
for the inspector to take?
A. Accept the abrasive and document the mesh size in the daily report, since the specification only requires a
Class 3 slag.
B. Reject the abrasive because the specification requires a specific abrasive type (e.g., garnet or steel grit)
and this is not identified.
C. Require the contractor to provide a certificate of analysis or labeling that verifies the abrasive meets the
chemical and physical requirements of SSPC-AB1 Class 3, and if not, reject it.
D. Allow the abrasive to be used but require the contractor to perform a test blast on a sample panel to verify
the resulting surface profile meets the specification.
Answer: C. Require the contractor to provide a certificate of analysis or labeling that verifies
the abrasive meets the chemical and physical requirements of SSPC-AB1 Class 3, and if not,
reject it.
2. A coating inspector is using a digital surface profile gauge (e.g., a depth micrometer) to
measure the profile of a steel surface prepared by abrasive blasting to SSPC-SP6. The
specification calls for a profile of 2-4 mils (50-100 microns). The inspector takes 10
measurements and obtains an average of 3.5 mils, with individual readings ranging from 2.0 to
4.0 mils. However, the contractor disputes the readings, claiming the gauge is not calibrated.
Which of the following is the most appropriate response by the inspector?
A. Accept the readings because the average is within the specified range and the range of readings is
acceptable.
B. Use a different technique, such as a replica tape, to verify the profile and compare results, after confirming
calibration of the digital gauge with a standard shim.
C. Reject the contractor's claim because digital gauges are inherently accurate and do not require frequent
calibration.
D. Take additional measurements in the same locations to see if the variability decreases, and then average
all readings.
Answer: B. Use a different technique, such as a replica tape, to verify the profile and compare
results, after confirming calibration of the digital gauge with a standard shim.
3. In accordance with ASTM D4417, which of the following methods for measuring surface
profile is considered the most accurate for verifying the maximum peak-to-valley height on a
blasted steel surface?
A. Method A: using a visual comparator
B. Method B: using a depth micrometer
C. Method C: using replica tape
D. Method D: using a stylus profile instrument
Answer: D. Method D: using a stylus profile instrument
4. An inspector is asked to evaluate the surface cleanliness of a steel substrate after power tool
cleaning. The specification requires a visual standard of SSPC-SP11 (Power Tool Cleaning to
Bare Metal). Which of the following observations would indicate that the surface does NOT
, meet SP11?
A. The surface has a uniform metallic appearance with no visible rust, mill scale, or coatings.
B. There are minor remnants of intact mill scale in the form of spots or stains visible without magnification.
C. The surface has a light shadow discoloration from residual rust, but it can be wiped off with a cloth.
D. The surface has a dull grey appearance but is free of all visible oil, grease, and other contaminants.
Answer: B. There are minor remnants of intact mill scale in the form of spots or stains visible
without magnification.
5. A coating specification requires that surfaces be blast cleaned to 'SSPC-SP10/NACE No. 2'
prior to applying a zinc-rich primer. Upon inspection, the contractor's work shows areas where
stains are visible, but they are not raised and cannot be removed with a pocket knife. Which of
the following is the most appropriate judgment?
A. The surface meets SP10 because SP10 allows staining that cannot be removed by a knife.
B. The surface does not meet SP10 because SP10 requires a completely uniform grey-white appearance with
no staining whatsoever.
C. The surface meets SP10 only if the stains are uniformly distributed and cover no more than 5% of the
surface.
D. The surface does not meet SP10 because staining typically indicates the presence of soluble salts that will
cause premature coating failure.
Answer: A. The surface meets SP10 because SP10 allows staining that cannot be removed by a
knife.
6. During a job, the contractor is using a centrifugal wheel blast machine to clean steel plates.
The inspector notices that the surface profile is inconsistent, with some areas having a shallow
profile (below the minimum specified) and others having a deep profile. Which of the following
is the most likely cause of this problem?
A. The abrasive size is too large for the specified profile.
B. The wheel speed is too high, causing excessive cutting.
C. The abrasive feed rate is not uniform, resulting in variable impact energy.
D. The steel plates are not being moved through the machine at a consistent speed.
Answer: C. The abrasive feed rate is not uniform, resulting in variable impact energy.
7. A coating inspector is reviewing the application of a two-component epoxy coating using
airless spray. The manufacturer's data sheet specifies a pot life of 2 hours at 77°F (25°C). The
coating is being applied at a job site where the temperature is 85°F (29°C), and the contractor
mixed the material 2.5 hours ago. What is the most appropriate action for the inspector?
A. Allow the contractor to continue applying the material because the pot life is extended in warmer conditions.
B. Reject the material and require the contractor to mix a fresh batch, because the pot life is shortened at
higher temperatures.
C. Advise the contractor to add a thinner to extend the pot life and then continue application.
D. Allow the contractor to use the material only if it is still within the manufacturer's maximum temperature
range, but document the issue in the daily report.
Answer: B. Reject the material and require the contractor to mix a fresh batch, because the pot
life is shortened at higher temperatures.
8. In a project where a maintenance coating is being applied over an existing aged coating
system, the inspector observes that the contractor is using a solvent-based epoxy as a tie coat.
However, the specification requires a penetrating sealer for the old coating. Which of the
Guide PDF | Certification Exam Prep & Practice Questions.
1. During a pre-job conference for coating a steel tank, the inspector is asked to verify that the
contractor's proposed abrasive meets the project specification of 'SSPC-AB1 Class 3'. The
contractor provides a bag labeled 'slag abrasive, 20-40 mesh.' Which action is most appropriate
for the inspector to take?
A. Accept the abrasive and document the mesh size in the daily report, since the specification only requires a
Class 3 slag.
B. Reject the abrasive because the specification requires a specific abrasive type (e.g., garnet or steel grit)
and this is not identified.
C. Require the contractor to provide a certificate of analysis or labeling that verifies the abrasive meets the
chemical and physical requirements of SSPC-AB1 Class 3, and if not, reject it.
D. Allow the abrasive to be used but require the contractor to perform a test blast on a sample panel to verify
the resulting surface profile meets the specification.
Answer: C. Require the contractor to provide a certificate of analysis or labeling that verifies
the abrasive meets the chemical and physical requirements of SSPC-AB1 Class 3, and if not,
reject it.
2. A coating inspector is using a digital surface profile gauge (e.g., a depth micrometer) to
measure the profile of a steel surface prepared by abrasive blasting to SSPC-SP6. The
specification calls for a profile of 2-4 mils (50-100 microns). The inspector takes 10
measurements and obtains an average of 3.5 mils, with individual readings ranging from 2.0 to
4.0 mils. However, the contractor disputes the readings, claiming the gauge is not calibrated.
Which of the following is the most appropriate response by the inspector?
A. Accept the readings because the average is within the specified range and the range of readings is
acceptable.
B. Use a different technique, such as a replica tape, to verify the profile and compare results, after confirming
calibration of the digital gauge with a standard shim.
C. Reject the contractor's claim because digital gauges are inherently accurate and do not require frequent
calibration.
D. Take additional measurements in the same locations to see if the variability decreases, and then average
all readings.
Answer: B. Use a different technique, such as a replica tape, to verify the profile and compare
results, after confirming calibration of the digital gauge with a standard shim.
3. In accordance with ASTM D4417, which of the following methods for measuring surface
profile is considered the most accurate for verifying the maximum peak-to-valley height on a
blasted steel surface?
A. Method A: using a visual comparator
B. Method B: using a depth micrometer
C. Method C: using replica tape
D. Method D: using a stylus profile instrument
Answer: D. Method D: using a stylus profile instrument
4. An inspector is asked to evaluate the surface cleanliness of a steel substrate after power tool
cleaning. The specification requires a visual standard of SSPC-SP11 (Power Tool Cleaning to
Bare Metal). Which of the following observations would indicate that the surface does NOT
, meet SP11?
A. The surface has a uniform metallic appearance with no visible rust, mill scale, or coatings.
B. There are minor remnants of intact mill scale in the form of spots or stains visible without magnification.
C. The surface has a light shadow discoloration from residual rust, but it can be wiped off with a cloth.
D. The surface has a dull grey appearance but is free of all visible oil, grease, and other contaminants.
Answer: B. There are minor remnants of intact mill scale in the form of spots or stains visible
without magnification.
5. A coating specification requires that surfaces be blast cleaned to 'SSPC-SP10/NACE No. 2'
prior to applying a zinc-rich primer. Upon inspection, the contractor's work shows areas where
stains are visible, but they are not raised and cannot be removed with a pocket knife. Which of
the following is the most appropriate judgment?
A. The surface meets SP10 because SP10 allows staining that cannot be removed by a knife.
B. The surface does not meet SP10 because SP10 requires a completely uniform grey-white appearance with
no staining whatsoever.
C. The surface meets SP10 only if the stains are uniformly distributed and cover no more than 5% of the
surface.
D. The surface does not meet SP10 because staining typically indicates the presence of soluble salts that will
cause premature coating failure.
Answer: A. The surface meets SP10 because SP10 allows staining that cannot be removed by a
knife.
6. During a job, the contractor is using a centrifugal wheel blast machine to clean steel plates.
The inspector notices that the surface profile is inconsistent, with some areas having a shallow
profile (below the minimum specified) and others having a deep profile. Which of the following
is the most likely cause of this problem?
A. The abrasive size is too large for the specified profile.
B. The wheel speed is too high, causing excessive cutting.
C. The abrasive feed rate is not uniform, resulting in variable impact energy.
D. The steel plates are not being moved through the machine at a consistent speed.
Answer: C. The abrasive feed rate is not uniform, resulting in variable impact energy.
7. A coating inspector is reviewing the application of a two-component epoxy coating using
airless spray. The manufacturer's data sheet specifies a pot life of 2 hours at 77°F (25°C). The
coating is being applied at a job site where the temperature is 85°F (29°C), and the contractor
mixed the material 2.5 hours ago. What is the most appropriate action for the inspector?
A. Allow the contractor to continue applying the material because the pot life is extended in warmer conditions.
B. Reject the material and require the contractor to mix a fresh batch, because the pot life is shortened at
higher temperatures.
C. Advise the contractor to add a thinner to extend the pot life and then continue application.
D. Allow the contractor to use the material only if it is still within the manufacturer's maximum temperature
range, but document the issue in the daily report.
Answer: B. Reject the material and require the contractor to mix a fresh batch, because the pot
life is shortened at higher temperatures.
8. In a project where a maintenance coating is being applied over an existing aged coating
system, the inspector observes that the contractor is using a solvent-based epoxy as a tie coat.
However, the specification requires a penetrating sealer for the old coating. Which of the
