NACE CP2 – Exam Questions and
Answers | Latest Version | 2025/2026 |
Correct & Verified
Which coating inspection activity is primarily performed during surface preparation?
A. Measuring dry film thickness
B. Verifying environmental conditions
C. Checking coating adhesion
D. Inspecting cured coating gloss
✔✔B. Verifying environmental conditions
What is the main purpose of surface cleanliness standards in coating inspection?
A. Improve color appearance
B. Reduce coating cost
C. Ensure proper coating adhesion
D. Increase coating thickness
✔✔C. Ensure proper coating adhesion
Which instrument is used to measure surface profile on steel substrates?
A. Gloss meter
B. Wet film gauge
C. Surface profile gauge
D. Hygrometer
1
,✔✔C. Surface profile gauge
Why is dew point monitoring critical during coating application?
A. To control color uniformity
B. To prevent moisture condensation on the surface
C. To speed up curing
D. To increase film thickness
✔✔B. To prevent moisture condensation on the surface
Which contaminant most commonly interferes with coating adhesion?
A. Sound metal
B. Clean abrasive
C. Oil or grease
D. Proper primer
✔✔C. Oil or grease
What does SSPC-SP 10 describe?
A. Solvent cleaning
B. Hand tool cleaning
C. Near-white metal blast cleaning
D. Brush-off blast cleaning
✔✔C. Near-white metal blast cleaning
2
,Which condition must be documented before coating application begins?
A. Final inspection report
B. Surface profile only
C. Ambient temperature, humidity, and dew point
D. Final cure time
✔✔C. Ambient temperature, humidity, and dew point
What is the primary function of a hygrometer?
A. Measure coating thickness
B. Measure air temperature
C. Measure relative humidity
D. Measure surface roughness
✔✔C. Measure relative humidity
Which inspection activity is performed immediately after coating application?
A. Holiday detection
B. Wet film thickness measurement
C. Adhesion testing
D. Cure verification
✔✔B. Wet film thickness measurement
What does WFT measurement help ensure?
A. Proper color shade
3
, B. Proper coating coverage to achieve DFT
C. Faster drying time
D. Improved surface cleanliness
✔✔B. Proper coating coverage to achieve DFT
Which factor most affects coating cure time?
A. Inspector experience
B. Ambient temperature
C. Substrate color
D. Coating brand
✔✔B. Ambient temperature
Which defect is caused by trapped air bubbles in the coating film?
A. Sagging
B. Pinholing
C. Blistering
D. Cracking
✔✔B. Pinholing
What is the purpose of holiday testing?
A. Measure film thickness
B. Identify coating color mismatch
C. Detect discontinuities in the coating
4
Answers | Latest Version | 2025/2026 |
Correct & Verified
Which coating inspection activity is primarily performed during surface preparation?
A. Measuring dry film thickness
B. Verifying environmental conditions
C. Checking coating adhesion
D. Inspecting cured coating gloss
✔✔B. Verifying environmental conditions
What is the main purpose of surface cleanliness standards in coating inspection?
A. Improve color appearance
B. Reduce coating cost
C. Ensure proper coating adhesion
D. Increase coating thickness
✔✔C. Ensure proper coating adhesion
Which instrument is used to measure surface profile on steel substrates?
A. Gloss meter
B. Wet film gauge
C. Surface profile gauge
D. Hygrometer
1
,✔✔C. Surface profile gauge
Why is dew point monitoring critical during coating application?
A. To control color uniformity
B. To prevent moisture condensation on the surface
C. To speed up curing
D. To increase film thickness
✔✔B. To prevent moisture condensation on the surface
Which contaminant most commonly interferes with coating adhesion?
A. Sound metal
B. Clean abrasive
C. Oil or grease
D. Proper primer
✔✔C. Oil or grease
What does SSPC-SP 10 describe?
A. Solvent cleaning
B. Hand tool cleaning
C. Near-white metal blast cleaning
D. Brush-off blast cleaning
✔✔C. Near-white metal blast cleaning
2
,Which condition must be documented before coating application begins?
A. Final inspection report
B. Surface profile only
C. Ambient temperature, humidity, and dew point
D. Final cure time
✔✔C. Ambient temperature, humidity, and dew point
What is the primary function of a hygrometer?
A. Measure coating thickness
B. Measure air temperature
C. Measure relative humidity
D. Measure surface roughness
✔✔C. Measure relative humidity
Which inspection activity is performed immediately after coating application?
A. Holiday detection
B. Wet film thickness measurement
C. Adhesion testing
D. Cure verification
✔✔B. Wet film thickness measurement
What does WFT measurement help ensure?
A. Proper color shade
3
, B. Proper coating coverage to achieve DFT
C. Faster drying time
D. Improved surface cleanliness
✔✔B. Proper coating coverage to achieve DFT
Which factor most affects coating cure time?
A. Inspector experience
B. Ambient temperature
C. Substrate color
D. Coating brand
✔✔B. Ambient temperature
Which defect is caused by trapped air bubbles in the coating film?
A. Sagging
B. Pinholing
C. Blistering
D. Cracking
✔✔B. Pinholing
What is the purpose of holiday testing?
A. Measure film thickness
B. Identify coating color mismatch
C. Detect discontinuities in the coating
4
