Which of the valves listed should be closed...

Question 1 / 205eccefa0bacbc34ba4d46ee1

Question 1 of 205eccefa0bacbc34ba4d46ee1

Which of the valves listed should be closed before lighting off a boiler?

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Question 1 of 20

5eccefa0bacbc34ba4d46ee1

Which of the valves listed should be closed before lighting off a boiler?

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🔍 Key Concepts

• Boiler heat-up and expansion: why certain parts must be open to allow drainage and venting when lighting off • Purpose of superheater and economizer drains and vents during startup • What can happen if water or air is trapped in heated components (water hammer, tube damage)

💭 Think About

• Think about which components need to be free to drain or vent when you first apply heat to a boiler and its attached systems • Ask yourself: which valve, if left OPEN, could allow unwanted flow or loss of fluid that is not desirable during initial firing? • Consider which devices (superheater, economizer, drum) are most vulnerable to damage if condensate or air is not properly removed at light-off

✅ Before You Answer

• Identify which valves are normally kept open during boiler warm-up to allow safe drainage and venting • Consider which valve, if left open, would defeat its own safety/operating purpose at the moment of lighting off • Verify which component (superheater, economizer, drum) should already be full and not draining when you first light off the boiler

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Question 1 of 20

Which of the valves listed should be closed before lighting off a boiler?

Superheater vent valve

Air cock valve

Economizer drain valve

Superheater drain valve

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Question 1 / 205eccefa0bacbc34ba4d46ee1

Question 1 of 205eccefa0bacbc34ba4d46ee1

Which of the valves listed should be closed before lighting off a boiler?

Back

Question 1 of 20

5eccefa0bacbc34ba4d46ee1

Which of the valves listed should be closed before lighting off a boiler?

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