When a flash-type evaporator is to be...

Question 1 / 270705eccef9cbacbc34ba4d4583d

Question 1 of 270705eccef9cbacbc34ba4d4583d

When a flash-type evaporator is to be secured for an extended period of time, the entire unit should be drained, cleaned, and __________.

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Question 1 of 27070

When a flash-type evaporator is to be secured for an extended period of time, the entire unit should be drained, cleaned, and __________.

🔍 Key Concepts

• Corrosion prevention in distilling/evaporator plants during lay-up • Effect of trapped moisture and oxygen on steel surfaces • Difference between short-term securing and extended out-of-service periods

💭 Think About

• Think about what causes the most corrosion inside a steel evaporator when it is not operating for a long time. • Consider whether it is better for the internal surfaces to be wet or dry during extended lay-up. • Ask yourself what happens if you seal a metal tank that still has some moisture versus allowing it to be open in a controlled way.

✅ Before You Answer

• Identify which choice would minimize long-term corrosion of internal metal parts. • Eliminate any option that obviously keeps saltwater in contact with metal surfaces for long periods. • Decide whether excluding air completely is realistic, or whether some dry, ventilated condition is safer.

Question 1 of 27070

When a flash-type evaporator is to be secured for an extended period of time, the entire unit should be drained, cleaned, and __________.

completely filled with saltwater

filled with descaling compound

tightly closed to exclude air

vented to the atmosphere