MCQ Practice Exam Offshore Corrosion Assessment Training
(O-CAT Technician) Certification Exam
1. The primary cause of corrosion on offshore
structures is:
A. Solar radiation
B. Moisture and saltwater exposure
C. Vibration
D. Wind direction
Answer: B
2. Cathodic protection works by:
A. Increasing oxygen
B. Making the protected metal a cathode
C. Painting over rust
D. Removing coatings
Answer: B
3. The most common coating type for offshore steel
is:
A. Epoxy coating
B. Acrylic paint
C. Paper tape
D. Latex paint
Answer: A
4. Corrosion is defined as:
A. Metal strengthening
B. Deterioration of metal by chemical or
, electrochemical reaction
C. Metal polishing
D. Metal heating process
Answer: B
5. Marine growth on steel structures typically:
A. Strengthens metal
B. Accelerates corrosion
C. Has no effect
D. Prevents rust
Answer: B
6. The role of a corrosion technician is to:
A. Drill wells
B. Assess corrosion and assist in protection
methods
C. Perform welding
D. Manage shipping
Answer: B
7. The pitting corrosion usually appears as:
A. Large uniform holes
B. Deep localized pits
C. Paint peeling only
D. Weld cracking
Answer: B
8. The splash zone on offshore structures has:
A. Minimal corrosion
, B. Highest corrosion rate
C. No oxygen
D. Only heat damage
Answer: B
9. General corrosion affects:
A. The entire surface uniformly
B. Only welds
C. Only bolts
D. Painted surfaces only
Answer: A
10. Galvanic corrosion occurs when:
A. Two similar metals are connected
B. Two dissimilar metals contact in an electrolyte
C. Metal is painted
D. No moisture is present
Answer: B
11. The anode in cathodic protection is the metal
that:
A. Is protected
B. Sacrifices itself
C. Absorbs oxygen
D. Is insulated
Answer: B
12. The best inspection tool for wall thickness is:
A. Hammer
, B. Ultrasonic thickness gauge
C. Paint brush
D. Magnet
Answer: B
13. MIC stands for:
A. Marine Industrial Coating
B. Microbiologically Influenced Corrosion
C. Metal Inspection Certificate
D. Mechanical Internal Corrosion
Answer: B
14. The primary electrolyte offshore is:
A. Dry sand
B. Seawater
C. Freshwater only
D. Air
Answer: B
15. Coating failure often begins with:
A. Over-cleaning
B. Poor surface preparation
C. Low temperature
D. Quiet seas
Answer: B
16. Residual metal thickness determines:
A. Remaining strength of structure
B. Paint color
(O-CAT Technician) Certification Exam
1. The primary cause of corrosion on offshore
structures is:
A. Solar radiation
B. Moisture and saltwater exposure
C. Vibration
D. Wind direction
Answer: B
2. Cathodic protection works by:
A. Increasing oxygen
B. Making the protected metal a cathode
C. Painting over rust
D. Removing coatings
Answer: B
3. The most common coating type for offshore steel
is:
A. Epoxy coating
B. Acrylic paint
C. Paper tape
D. Latex paint
Answer: A
4. Corrosion is defined as:
A. Metal strengthening
B. Deterioration of metal by chemical or
, electrochemical reaction
C. Metal polishing
D. Metal heating process
Answer: B
5. Marine growth on steel structures typically:
A. Strengthens metal
B. Accelerates corrosion
C. Has no effect
D. Prevents rust
Answer: B
6. The role of a corrosion technician is to:
A. Drill wells
B. Assess corrosion and assist in protection
methods
C. Perform welding
D. Manage shipping
Answer: B
7. The pitting corrosion usually appears as:
A. Large uniform holes
B. Deep localized pits
C. Paint peeling only
D. Weld cracking
Answer: B
8. The splash zone on offshore structures has:
A. Minimal corrosion
, B. Highest corrosion rate
C. No oxygen
D. Only heat damage
Answer: B
9. General corrosion affects:
A. The entire surface uniformly
B. Only welds
C. Only bolts
D. Painted surfaces only
Answer: A
10. Galvanic corrosion occurs when:
A. Two similar metals are connected
B. Two dissimilar metals contact in an electrolyte
C. Metal is painted
D. No moisture is present
Answer: B
11. The anode in cathodic protection is the metal
that:
A. Is protected
B. Sacrifices itself
C. Absorbs oxygen
D. Is insulated
Answer: B
12. The best inspection tool for wall thickness is:
A. Hammer
, B. Ultrasonic thickness gauge
C. Paint brush
D. Magnet
Answer: B
13. MIC stands for:
A. Marine Industrial Coating
B. Microbiologically Influenced Corrosion
C. Metal Inspection Certificate
D. Mechanical Internal Corrosion
Answer: B
14. The primary electrolyte offshore is:
A. Dry sand
B. Seawater
C. Freshwater only
D. Air
Answer: B
15. Coating failure often begins with:
A. Over-cleaning
B. Poor surface preparation
C. Low temperature
D. Quiet seas
Answer: B
16. Residual metal thickness determines:
A. Remaining strength of structure
B. Paint color
