What gas is used to purge oxygen from cargo tanks before loading gas?
Direct Answer
Option C: Inert gas or Nitrogen (N2)
Inert gas or nitrogen is used to purge oxygen from cargo tanks to create a non-flammable atmosphere before loading. This process, known as inerting, is a critical safety procedure mandated by the IGC Code to prevent the formation of explosive mixtures within the cargo containment system during gas-freeing or loading operations.
All Options
Detailed Explanation & Context
Inert gas or nitrogen is used to purge oxygen from cargo tanks to create a non-flammable atmosphere before loading. This process, known as inerting, is a critical safety procedure mandated by the IGC Code to prevent the formation of explosive mixtures within the cargo containment system during gas-freeing or loading operations.
Relevant Framework: STCW 2010 Manila Amendments • DG Shipping E-Learning & Exit Exam Standards • Liquefied Gas Tanker Cargo Operations (LGTCO/LGTF).
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