OCTCO/OCTF Exit Exam • Set 1 Question 4 of 30
What condition is mandatory before starting Crude Oil Washing (COW)?
✓
Direct Answer
Option D: Cargo tank must be inerted with O2 < 8%
COW generates static charges; tank O2 must be below 8% to prevent explosion.
All Options
A
Boiler off
B
Tank open to air
C
Dry dock
D
Cargo tank must be inerted with O2 < 8%
(Correct Answer)
Detailed Explanation & Context
COW generates static charges; tank O2 must be below 8% to prevent explosion.
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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