OCTCO/OCTF Exit Exam • Set 2 Question 25 of 30
What is gas freeing on an oil tanker?
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Direct Answer
Option D: Replacing hydrocarbon or inert gas in cargo tanks with fresh breathable air
Gas freeing involves purging cargo tanks of toxic hydrocarbon gases or inert gas using portable or fixed blowers until the internal atmosphere reaches a safe, breathable condition for human entry.
All Options
A
Heating cargo
B
Closing all vents
C
Filling tank with crude
D
Replacing hydrocarbon or inert gas in cargo tanks with fresh breathable air
(Correct Answer)
Detailed Explanation & Context
Gas freeing involves purging cargo tanks of toxic hydrocarbon gases or inert gas using portable or fixed blowers until the internal atmosphere reaches a safe, breathable condition for human entry.
Relevant Framework: STCW 2010 Manila Amendments • DG Shipping E-Learning & Exit Exam Standards • Oil and Chemical Tanker Cargo Operations (OCTCO/OCTF).
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