OCTCO/OCTF Exit Exam • Set 9 Question 17 of 30

Mast riser fire doesn't normally occur during?

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Direct Answer

Option B: discharging

Mast riser fires do not normally occur during cargo discharging because air/inert gas is flowing into tanks or tank pressure is negative/neutral rather than venting high-velocity flammable vapour.

All Options

purging

discharging (Correct Answer)

purging inert gas pressure during normal passage

Detailed Explanation & Context

Mast riser fires do not normally occur during cargo discharging because air/inert gas is flowing into tanks or tank pressure is negative/neutral rather than venting high-velocity flammable vapour.

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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