OCTCO/OCTF Exit Exam • Set 5 Question 16 of 30
A gas venting system on a tanker that has gas lines in each tank connected to a common gas main running the full length of the ship is called:
✓
Direct Answer
Option B: A common-main system
A common-main venting system connects individual tank branch lines into a continuous common gas main header running the full length of the cargo tank area.
All Options
A
A gas-main system
B
A common-main system
(Correct Answer)
C
A vent-main system
D
An independent system
Detailed Explanation & Context
A common-main venting system connects individual tank branch lines into a continuous common gas main header running the full length of the cargo tank area.
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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