🔍 Key Concepts

• Boiler water treatment and why it is necessary • Difference between scale (mineral deposits) and corrosion • Normal desired pH (alkalinity vs acidity) in marine boiler water

💭 Think About

• Think about what happens inside boiler tubes when hard water is heated repeatedly. Which problem are we mainly trying to avoid with water treatment? • Which choice describes a condition you would almost NEVER want in a boiler (especially regarding acidity vs alkalinity)? • Ask yourself: even with good chemical treatment, do engineers still perform regular blowdowns?

✅ Before You Answer

• Verify which option relates directly to scale and deposits on heating surfaces. • Eliminate any option that suggests you can stop doing standard operating procedures (like blowdowns). • Remember that marine boiler water is usually kept slightly alkaline, not acidic. Check which choice conflicts with that.