🔍 Key Concepts

• Tank heating coil systems on tankers and where their steam condensate is normally routed • Difference between a clean condensate return and a contaminated drain • What an atmospheric drain tank and DC heater (de-aerating feed heater) are used for in a steam plant

💭 Think About

• If a heating coil in a cargo tank springs a small leak, what happens to the steam condensate in terms of possible contamination? • Which option is specifically designed to handle liquids that may contain oil or cargo, rather than sending them directly back into the main steam cycle? • Which of the listed systems must always remain as clean as possible to protect the boilers and feed system?

✅ Before You Answer

• Identify which choices are part of the clean feedwater/condensate cycle (these usually must NOT receive potentially contaminated drains). • Identify which choice is normally used to collect oily or potentially contaminated steam drains before any treatment or disposal. • Make sure you can explain why sending tank-heating coil drains directly to the main condenser or DC heater could create serious boiler water chemistry problems.