🔍 Key Concepts

• Inert gas system flow path – from flue gas source, through treatment units, to cargo tanks • What happens to hot flue gas before it can be safely sent to cargo tanks • Difference between cooling, oxygen control, static electricity, and water seal functions in an inert gas plant

💭 Think About

• Trace the path of the gas: after leaving the boiler uptake or generator, what must be done to that gas so it will not damage deck piping and cargo tanks? • Which component in an inert gas system is normally responsible for controlling oxygen content – is it the scrubber or another part of the system? • Think about what equipment would reasonably be used to handle static electricity and what equipment would reasonably be used to maintain a water seal.

✅ Before You Answer

• Identify the primary physical process happening inside a scrubber tower (what goes in, what comes out, and how conditions change). • Confirm which unit in the system actually monitors and regulates oxygen percentage (hint: consider oxygen analyzers and control valves). • Ask yourself: does a vertical tower with water spray and demisters sound more suited to electrical grounding, water level control, or treating hot, dirty gas?