Oil Tanker Competence

Tank Cleaning – Principles & Operations

A test covering the fundamentals of cargo tank cleaning using tank cleaning machines. It includes cleaning principles, temperature regimes, pressure, the use of cleaning chemicals, cleanliness standards, and basic safety requirements. Suitable for cadets and junior officers.

Questions 18

Time Limit 9 min

Language English

Sample Questions

Here are some example questions from this quiz. Download the GYRO app to take the full test.

Question 1

When oil is flowing through a steel pipe both will be electrostatically charged in such a way that:

A One will be negatively charged, the other will be positively charged.

B Both will be negatively charged.

C Both will be positively charged.

D None of them will be charged.

Question 2

What will happen with the flammable range if the oxygen content is lowered?

A The range will become more narrow.

B Nothing will happen.

C The flammable range is not oxygen dependent.

D The range will become wider.

Question 3

When alkalis and vegetable oil are mixed they form:

A Soap.

B Alcohol.

C Butter.

D Organic Acids.

Question 4

What will be the normal pressure when cleaning with dual nozzle tank cleaning machines?

A 8-10 bar.

B 4-6 bar.

C 6-8 bar.

D 10-12 bar.

Question 5

What is the most common reason for performing crude oil wash?

A To prevent cargo sludge building up.

B To avoid contamination of the next cargo.

C To comply with the Volatile Organic Compound Management Plan.

D To make it easier to ventilate the tank.

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