OCTCO/OCTF Exit Exam • Set 9 Question 8 of 30
Before entry into a cargo tank which has contained a petroleum product.........
✓
Direct Answer
Option D: the tank must be tested for a sufficient amount of oxygen
Prior to entering any enclosed cargo tank, the atmosphere must be rigorously tested and confirmed to have at least 20.9% oxygen, 0% LEL flammable gas, and zero toxic vapours.
All Options
A
adjacent tanks must be empty
B
the tank must be filled with fresh water and emptied
C
static electricity must be measured
D
the tank must be tested for a sufficient amount of oxygen
(Correct Answer)
Detailed Explanation & Context
Prior to entering any enclosed cargo tank, the atmosphere must be rigorously tested and confirmed to have at least 20.9% oxygen, 0% LEL flammable gas, and zero toxic vapours.
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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