Which of the following describes the fresh...

Which of the following describes the fresh air intake of the inert gas system?

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🔍 Key Concepts

• Inert Gas System (IGS) purpose on tankers—why we cool and treat flue gas before sending it to cargo tanks • Main components of an IGS: scrubber, blower, deck water seal, and fresh air intake • Difference between functions that protect against vacuum/overpressure versus those that control gas quality and temperature

💭 Think About

• Look at each option and ask: Is this mainly about protecting the deck seal and piping pressure, or about conditioning the gas (temperature and mixture)? • Which IGS component is responsible for preventing oxygen content in the flue gas from becoming too high—does that sound like a fresh air intake, or the combustion/scrubber control? • When hot flue gases come from the boiler, what must happen to them (temperature and composition) before they go to cargo tanks, and which choice best matches that role?

✅ Before You Answer

• Identify which option is clearly related to vacuum protection at the deck water seal—that is a different device from the fresh air intake. • Identify which option talks about oxygen limits (e.g., 3%)—ask yourself if adding fresh air would raise or lower oxygen content and whether that makes sense for inerting. • Ask: does the fresh air intake’s main job sound more like gas freeing, pressure protection, oxygen control, or cooling/mixing of flue gas before it goes to the tanks? Pick the one that best matches that purpose.

🔍 Key Concepts

💭 Think About

✅ Before You Answer