🔍 Key Concepts

• total dissolved solids (TDS) in boiler water and how they change over time • the purpose of bottom blowing a boiler and what happens if you do it less often • the difference between removing gases (deaeration) and removing dissolved minerals/solids

💭 Think About

• Which of these options would allow more dissolved solids to remain and build up in the boiler water rather than being removed? • Does zero water hardness generally increase or decrease the amount of dissolved minerals entering the boiler? • Does priming and carryover move more solids out of the boiler with the steam, or leave more behind in the boiler water?

✅ Before You Answer

• Identify which process actually removes dissolved solids from the boiler (if done properly). • Decide which option would cause less removal of dissolved solids over time, leading to higher TDS. • Separate in your mind processes that deal with gases (like oxygen) from those that deal with minerals/solids.