🔍 Key Concepts

• 46 CFR Subchapter F requirements for marine engineering systems, especially boilers and unfired waste heat boilers • Purpose of feed water systems and why contamination control is critical in boiler operations • Distinguish between what is sometimes used (optional/installation-specific) vs. what is always required by regulation

💭 Think About

• Ask yourself: Which choice sounds like a universal safety protection that would apply no matter what type or size of waste heat boiler is installed? • Think about what would happen if the main engine cooling system leaked into the boiler side—what specific type of protection would regulations be most concerned about? • Which options describe equipment that might depend on the particular design, and which describes a protection that should exist even if the system is very simple?

✅ Before You Answer

• Verify which option aligns with an independent safety safeguard, not just an operational convenience or performance improvement • Check which choices could be design-dependent (e.g., only for forced circulation, only for high-pressure systems) and eliminate those • Confirm from your boiler knowledge that contamination of boiler feed water can quickly lead to dangerous conditions and heavy damage—then see which option directly addresses that risk