Before a tank is to be crude oil washed, the oxygen content in the tank must be measured at a position ________.
Direct Answer
Option D: one meter from the deck
Oxygen content for Crude Oil Washing (COW) is measured one meter from the deck to ensure the atmosphere is below the 8% LEL, as per ISGOTT, preventing ignition during the washing process. This specific location accounts for potential stratification of gases.
All Options
Detailed Explanation & Context
Oxygen content for Crude Oil Washing (COW) is measured one meter from the deck to ensure the atmosphere is below the 8% LEL, as per ISGOTT, preventing ignition during the washing process. This specific location accounts for potential stratification of gases.
Relevant Framework: STCW 2010 Manila Amendments • DG Shipping E-Learning & Exit Exam Standards • Advanced Training for Chemical Tanker Cargo Operations (CHEMCO).
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