OCTCO/OCTF Exit Exam • Set 3 Question 6 of 30
On many modern VLCC tankers which of the following device is used to top up IG pressure on loaded condition in case of slight reduce in tank temperature.
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Direct Answer
Option A: Supplement IG by the boiler and standard method.
When tank temperature drops causing tank pressure to decrease during loaded passage, inert gas pressure is maintained by topping up from the boiler flue gas system using standard procedures.
All Options
A
Supplement IG by the boiler and standard method.
(Correct Answer)
B
Do not fire the main boiler plant due to excess fuel consumption which is more than allowed in the agreement
C
A separate IGG plant if installed separately
D
Wat till the discharge port, open tank vent to allow a little rise in tank pressure.
Detailed Explanation & Context
When tank temperature drops causing tank pressure to decrease during loaded passage, inert gas pressure is maintained by topping up from the boiler flue gas system using standard procedures.
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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