Protective Coating Specialist Exam Questions and Fully Explained Answers
1. Question:
What is the primary purpose of applying a protective coating to steel structures?
Answer:
The purpose is to prevent corrosion by creating a barrier that isolates the steel surface from
corrosive environmental elements such as oxygen, moisture, and salts.
Explanation: Steel corrodes when it reacts with oxygen and water. Coatings interrupt this reaction,
extending asset lifespan and reducing maintenance cost.
2. Question:
Which type of corrosion occurs when two different metals are in electrical contact within an
electrolyte?
Answer:
Galvanic corrosion.
Explanation: This form of corrosion results from an electrochemical reaction where the more active
metal becomes the anode and corrodes faster.
3. Question:
What surface preparation standard is commonly used to specify abrasive blast cleaning to near-
white metal?
Answer:
SSPC-SP 10 / NACE No. 2
Explanation: This standard requires removal of most mill scale, rust, and old coatings, leaving only
slight staining on no more than 5% of the surface.
4. Question:
Which surface profile measurement tool is used to measure anchor pattern depth after abrasive
blasting?
Answer:
Replica tape (Testex tape).
Explanation: The tape is burnished onto the blasted surface and then measured with a micrometer
to calculate the surface profile.
5. Question:
What environmental conditions must be monitored before coating application?
1. Question:
What is the primary purpose of applying a protective coating to steel structures?
Answer:
The purpose is to prevent corrosion by creating a barrier that isolates the steel surface from
corrosive environmental elements such as oxygen, moisture, and salts.
Explanation: Steel corrodes when it reacts with oxygen and water. Coatings interrupt this reaction,
extending asset lifespan and reducing maintenance cost.
2. Question:
Which type of corrosion occurs when two different metals are in electrical contact within an
electrolyte?
Answer:
Galvanic corrosion.
Explanation: This form of corrosion results from an electrochemical reaction where the more active
metal becomes the anode and corrodes faster.
3. Question:
What surface preparation standard is commonly used to specify abrasive blast cleaning to near-
white metal?
Answer:
SSPC-SP 10 / NACE No. 2
Explanation: This standard requires removal of most mill scale, rust, and old coatings, leaving only
slight staining on no more than 5% of the surface.
4. Question:
Which surface profile measurement tool is used to measure anchor pattern depth after abrasive
blasting?
Answer:
Replica tape (Testex tape).
Explanation: The tape is burnished onto the blasted surface and then measured with a micrometer
to calculate the surface profile.
5. Question:
What environmental conditions must be monitored before coating application?
