Question 1531 Deck General

70% to pass

Which of the following choices does not depict the tank inerting process on a tank vessel?

A the introduction of inert gas into a gas free tank with the objective of reducing the oxygen content to below 8% by volume
B the introduction of nitrogen gas into a tank with the objective of reducing the oxygen content to below 8% by volume
C the introduction of inert gas into a cargo tank during cargo discharge operations to replace the volume of discharged cargo
D the introduction of oxygen into a gas free tank prior to entry
AI Explanation

The correct answer is D) the introduction of oxygen into a gas free tank prior to entry. The tank inerting process is designed to reduce the oxygen content in a tank to below 8% by volume, in order to create a safe atmosphere for entry or cargo operations. Introducing oxygen into a gas-free tank would have the opposite effect, increasing the oxygen content and making the tank unsafe for entry. The other options (A, B, and C) correctly describe the tank inerting process of reducing oxygen through the introduction of inert or nitrogen gas.

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