Which of the following conditions would be...

Question 1 / 270705eccef9bbacbc34ba4d454ae

Question 1 of 270705eccef9bbacbc34ba4d454ae

Which of the following conditions would be hazardous if you were using two centrifugal pumps to discharge a flammable liquid?

Back

Question 1 of 27070

Which of the following conditions would be hazardous if you were using two centrifugal pumps to discharge a flammable liquid?

🔍 Key Concepts

• Operation of centrifugal pumps in parallel (on suction side vs. discharge side) • Effects of different pump speeds on pressure and flow within shared piping • Risks of cavitation, vapor pockets, or reverse flow when handling flammable liquids

💭 Think About

• Ask yourself: When two pumps are connected together, where is it more dangerous for one pump to "rob" flow or create suction problems – on the common suction side or on the common discharge side? • Consider what happens if one pump is stronger (higher speed) than the other. Could it pull liquid or vapor through the weaker pump and create abnormal conditions? • Think about how pressure behaves on a suction line versus a discharge line. Which side is more sensitive to low pressure, vapor lock, or cavitation, especially with flammable liquids?

✅ Before You Answer

• Identify which options involve a common suction line versus a common discharge line. • For the common suction options, compare what happens if pumps are at same speed vs. different speeds. • Before choosing, be sure you can explain to yourself whether any scenario could lead to cavitation, vapor formation, or one pump forcing flow through the other, which is hazardous with flammable liquids.

Question 1 of 27070

Which of the following conditions would be hazardous if you were using two centrifugal pumps to discharge a flammable liquid?

Both pumps operating at the same speed and discharging into a common line.

Each pump operating at a different speed and discharging into a common line.

Both pumps operating at the same speed taking suction from a common line.

Each pump operating at a different speed and taking suction from a common line.

Question 1 / 270705eccef9bbacbc34ba4d454ae

Question 1 of 270705eccef9bbacbc34ba4d454ae

Which of the following conditions would be hazardous if you were using two centrifugal pumps to discharge a flammable liquid?

Back

Question 1 of 27070

Which of the following conditions would be hazardous if you were using two centrifugal pumps to discharge a flammable liquid?