When starting a turbine driven boiler feed...

Question 1 / 205eccef9cbacbc34ba4d457ce

Question 1 of 205eccef9cbacbc34ba4d457ce

When starting a turbine driven boiler feed pump, care should be taken to ensure that the recirculating valve is open. Which of the following valves should be closed when starting?

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Question 1 of 20

5eccef9cbacbc34ba4d457ce

When starting a turbine driven boiler feed pump, care should be taken to ensure that the recirculating valve is open. Which of the following valves should be closed when starting?

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🔍 Key Concepts

• Turbine-driven boiler feed pump starting sequence (what must be open so the turbine and pump can actually run) • Purpose of the recirculating (minimum flow) valve and how it protects the pump when discharge flow is low or zero • Effects of starting a centrifugal pump with the suction, discharge, steam supply, and exhaust valves in different positions

💭 Think About

• Ask yourself: Which valve(s) absolutely must be OPEN for the turbine to spin and for water to reach the pump impeller at start-up? • If the recirculating valve is open, which line already provides a safe flow path so the pump is not "deadheaded" even if one other valve is closed? • For each option, imagine it is CLOSED at startup. What specific problem would that create: no steam flow, no water to pump, no turbine exhaust, or just reduced discharge to the system?

✅ Before You Answer

• Verify which valves are normally open whenever the turbine is in operation (think: steam path in and out of the turbine, and water supply into the pump). • Confirm that the recirculating valve open means the pump has a flow path back to the deaerator/feed tank even if the main line is not yet flowing. • Eliminate any choice where closing that valve would prevent either steam flow through the turbine or water flow into the pump at start.

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Question 1 of 20

When starting a turbine driven boiler feed pump, care should be taken to ensure that the recirculating valve is open. Which of the following valves should be closed when starting?

Turbine exhaust valve

Pump suction valve

Turbine steam supply valve

Pump discharge valve

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Question 1 / 205eccef9cbacbc34ba4d457ce

Question 1 of 205eccef9cbacbc34ba4d457ce

When starting a turbine driven boiler feed pump, care should be taken to ensure that the recirculating valve is open. Which of the following valves should be closed when starting?

Back

Question 1 of 20

5eccef9cbacbc34ba4d457ce

When starting a turbine driven boiler feed pump, care should be taken to ensure that the recirculating valve is open. Which of the following valves should be closed when starting?

No comments yet

Be the first to share your thoughts!

If the question has a related picture, it will appear here.

🔍 Key Concepts

💭 Think About

✅ Before You Answer

👋 Hi! I'm Genie, your AI study assistant. How can I help you with this question?

Quick actions

— No credit card needed