Each ship having an inert gas system must have a portable instrument to measure concentrations of hydrocarbon vapor in inert atmospheres and also to measure
Direct Answer
Option A: oxygen
Ships with an inert gas system are required to maintain portable monitoring equipment to verify the atmosphere within cargo tanks. This must include an oxygen analyzer to ensure the oxygen content is maintained below the critical limit (typically 5% or 8% by volume) to prevent combustion.
All Options
Detailed Explanation & Context
Ships with an inert gas system are required to maintain portable monitoring equipment to verify the atmosphere within cargo tanks. This must include an oxygen analyzer to ensure the oxygen content is maintained below the critical limit (typically 5% or 8% by volume) to prevent combustion.
Relevant Framework: STCW 2010 Manila Amendments • DG Shipping E-Learning & Exit Exam Standards • Advanced Training for Oil Tanker Cargo Operations (TASCO).
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