🔍 Key Concepts

• Boiler water treatment main goals (protect metal surfaces, improve efficiency, control corrosion and deposits) • Difference between scale formation and corrosion in boilers • What blow down and alkalinity control are used for in boiler operations

💭 Think About

• Ask yourself: What common problem occurs when minerals in untreated water are heated repeatedly inside a boiler? How does chemical treatment address that? • Which option sounds like a preventive measure for protecting internal boiler surfaces, versus something that would only reduce maintenance frequency? • Think about whether chemical treatment can completely eliminate a maintenance task, or if it usually just reduces the need for it.

✅ Before You Answer

• Identify which choice directly relates to preventing mineral deposits on heating surfaces inside the boiler • Consider whether any option claims to completely eliminate a maintenance procedure—does chemical treatment usually do that? • Check your knowledge: does chemical treatment normally aim to stabilize or to constantly decrease alkalinity?