Corrosion and Cargo Operations Quiz

What is the primary cause of corrosion in ballast tanks?

• Lack of ventilation

• Electrochemical reactions

• Excessive cargo weight

• Overuse of protective coatings

Which type of corrosion is caused by bacteria producing acidic byproducts?

• Electrolytic corrosion

• Microbiologically Influenced Corrosion (MIC)

• Galvanic corrosion

• Atmospheric corrosion

What is the main factor that accelerates corrosion in seawater?

• Presence of algae

• High chloride ion concentration

• UV radiation exposure

• Cargo spillage

Which of the following is NOT a common method for identifying corrosion?

• Visual inspection

• Ultrasonic thickness measurement

• Magnetic particle inspection

• Vibration analysis

How does cathodic protection prevent corrosion?

• By applying heat to metal surfaces

• By making the tank surface more anodic

• By using sacrificial anodes to attract corrosion

• By increasing oxygen concentration

What is a common sign of corrosion in cargo spaces?

• Blistering of coatings

• Bright and polished metal surfaces

• Sudden temperature drops

• Smooth, undamaged paint

Which cargo type is most likely to cause corrosion?

• Dry bulk cargo

• Acidic or alkaline cargoes

• Refrigerated goods

• Packed containerized cargo

What role do dehumidifiers play in corrosion prevention?

• They add moisture to the cargo space

• They increase temperature inside the tank

• They reduce humidity levels

• They neutralize corrosive chemicals

Why is it necessary to conduct regular ballast tank inspections?

• To identify early signs of corrosion

• To remove marine organisms

• To increase cargo storage capacity

• To repaint the entire tank

The International Maritime Organization (IMO) recommends which method to mitigate corrosion risks?

• Complete replacement of ballast tanks every 5 years

• Use of corrosion-resistant materials

• Reducing ventilation in cargo spaces

• Increasing water retention in ballast tanks