🔍 Key Concepts

• Boiler water chemical treatment and why chemicals are added in the first place • Difference between makeup feed and boiler blow down • What happens to dissolved and suspended solids as steam is generated

💭 Think About

• When boiler water is treated, where do the reaction products (solids, sludge, etc.) actually go during normal operation? • Which listed operation specifically removes concentrated impurities from inside the boiler, rather than adding more water or more chemicals? • As steam leaves the boiler, what happens to the non-volatile treatment chemicals and their reaction products over time?

✅ Before You Answer

• Identify which option describes a process that removes concentrated impurities from the boiler water. • Eliminate any choice that mainly involves adding water or chemicals instead of taking dissolved/solid residues out. • Confirm which procedure is normally used to control total dissolved solids (TDS) and prevent foaming and carryover in marine boilers.