What are consequences of a high oxygen content alarm sound during normal operation?
Direct Answer
Option D: The deck demand valve will automatically close. The atmosphere purge valve will open and the furnace presser control valve will regulate.
When high oxygen content (>8%) is detected in the inert gas supply line, the deck demand isolating valve automatically trips shut and the atmospheric vent/purge valve opens to protect cargo tanks.
All Options
Detailed Explanation & Context
When high oxygen content (>8%) is detected in the inert gas supply line, the deck demand isolating valve automatically trips shut and the atmospheric vent/purge valve opens to protect cargo tanks.
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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