GASCO Exit Exam • Set 13 Question 20 of 30

How should the activated alumina in the drying tank be regenerated after the dry air unit has been in use for sometimes (for about 20 hours) or when the high humidity alarm is given?

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Direct Answer

Option C: Back-flushing hot air through the tank

The correct answer is Back-flushing hot air through the tank. This complies with established gas tanker operational standards, thermodynamics, and the IGC Code safety requirements.

All Options

Shutting down the unit and restart the whole plant

Warming up the activated alumina outside the tank

Back-flushing hot air through the tank (Correct Answer)

Free flow air through the tank

Detailed Explanation & Context

The correct answer is Back-flushing hot air through the tank. This complies with established gas tanker operational standards, thermodynamics, and the IGC Code safety requirements.

Relevant Framework: STCW 2010 Manila Amendments • DG Shipping E-Learning & Exit Exam Standards • Advanced Training for Liquefied Gas Tanker Cargo Operations (GASCO).

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