Optimum Oxygen values in the inert gas for delivery into cargo tanks is between:
Direct Answer
Option B: 3 to 4%
For inert gas systems on chemical tankers, maintaining oxygen levels between 3% to 4% in the inert gas delivered to cargo tanks is considered optimum. This provides a sufficient safety margin below the 5% maximum specified by SOLAS/IBC Code, effectively preventing the formation of flammable atmospheres.
All Options
Detailed Explanation & Context
For inert gas systems on chemical tankers, maintaining oxygen levels between 3% to 4% in the inert gas delivered to cargo tanks is considered optimum. This provides a sufficient safety margin below the 5% maximum specified by SOLAS/IBC Code, effectively preventing the formation of flammable atmospheres.
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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