🔍 Key Concepts

• Flash-type distilling plant operation and purpose of the brine overboard pump • What brine contains after the evaporation/distillation process (solids, scale, crystals) • How screens/strainers protect centrifugal pumps and their impellers

💭 Think About

• Think about what is actually flowing through the brine overboard line and what physical problems that flow might cause to the pump internals. • Which of the options describes something that a mechanical screen (mesh) can realistically stop or prevent, based on size and physical nature? • Consider the difference between preventing hydraulic problems (like cavitation), chemical/electrical problems (like electrolysis), and mechanical blockage or damage.

✅ Before You Answer

• Identify what scale is and how/where it forms in distilling plants. • Decide which problems can be prevented by filtering out solid particles before they enter the pump. • Eliminate any option that describes a condition a screen could not reasonably prevent (for example, conditions caused by pressure, vapor, or electrical differences rather than physical debris).