OCTCO/OCTF Exit Exam • Set 6 Question 15 of 30
In the event of a pneumatic remote-control failure in the inert gas plant I/P and E/P controllers, during discharge _____?
✓
Direct Answer
Option C: The discharge rate must be reduced until the plant is repaired
If pneumatic IG pressure control fails during cargo discharge, the cargo discharge pumping rate must be immediately reduced or managed to ensure tank pressure remains safely positive.
All Options
A
The inert gas plant must be operational within one hour of failure and the discharging may continue for this time
B
The discharge must be immediately halted
C
The discharge rate must be reduced until the plant is repaired
(Correct Answer)
D
The venting of IG is set to maintain a predetermined pressure and the discharge can continue manually
Detailed Explanation & Context
If pneumatic IG pressure control fails during cargo discharge, the cargo discharge pumping rate must be immediately reduced or managed to ensure tank pressure remains safely positive.
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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