NACE CP1 – Questions and Answers |
Latest Version | 2025/2026 | Correct &
Verified
What is the primary goal of a coating inspection program in corrosion control?
✔✔To ensure coatings are applied correctly to protect substrates from corrosion.
What does CP1 certification primarily focus on?
✔✔Fundamental knowledge of protective coatings, surface preparation, and inspection practices.
Why is surface cleanliness critical before coating application?
✔✔Because contaminants prevent proper coating adhesion and long-term performance.
What does visual inspection evaluate before coating application?
✔✔Surface condition, cleanliness, and visible defects.
What is flash rust?
✔✔Light rust that forms quickly on steel after surface preparation when moisture is present.
Why must steel surfaces be dry before coating?
✔✔Moisture interferes with adhesion and promotes corrosion under the coating.
What is the purpose of abrasive blasting?
1
, ✔✔To remove rust, mill scale, and contaminants while creating surface profile.
What is surface profile?
✔✔The roughness pattern left on a surface to help coatings adhere.
Why is surface profile important for coating performance?
✔✔It provides mechanical anchoring for the coating.
What is the role of a coating inspector?
✔✔To verify that all coating work meets project specifications and standards.
Why should ambient temperature be monitored during coating application?
✔✔Temperature affects coating curing and performance.
What is relative humidity?
✔✔The amount of moisture in the air compared to the maximum it can hold at a given
temperature.
Why is dew point important in coating work?
✔✔It indicates when condensation may form on surfaces.
What happens if coating is applied over condensation?
2
Latest Version | 2025/2026 | Correct &
Verified
What is the primary goal of a coating inspection program in corrosion control?
✔✔To ensure coatings are applied correctly to protect substrates from corrosion.
What does CP1 certification primarily focus on?
✔✔Fundamental knowledge of protective coatings, surface preparation, and inspection practices.
Why is surface cleanliness critical before coating application?
✔✔Because contaminants prevent proper coating adhesion and long-term performance.
What does visual inspection evaluate before coating application?
✔✔Surface condition, cleanliness, and visible defects.
What is flash rust?
✔✔Light rust that forms quickly on steel after surface preparation when moisture is present.
Why must steel surfaces be dry before coating?
✔✔Moisture interferes with adhesion and promotes corrosion under the coating.
What is the purpose of abrasive blasting?
1
, ✔✔To remove rust, mill scale, and contaminants while creating surface profile.
What is surface profile?
✔✔The roughness pattern left on a surface to help coatings adhere.
Why is surface profile important for coating performance?
✔✔It provides mechanical anchoring for the coating.
What is the role of a coating inspector?
✔✔To verify that all coating work meets project specifications and standards.
Why should ambient temperature be monitored during coating application?
✔✔Temperature affects coating curing and performance.
What is relative humidity?
✔✔The amount of moisture in the air compared to the maximum it can hold at a given
temperature.
Why is dew point important in coating work?
✔✔It indicates when condensation may form on surfaces.
What happens if coating is applied over condensation?
2
