If the DC heater relief valve lifts...

Question 1 / 205eccef9cbacbc34ba4d457c6

Question 1 of 205eccef9cbacbc34ba4d457c6

If the DC heater relief valve lifts frequently, the cause can be excessive __________.

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Question 1 of 20

5eccef9cbacbc34ba4d457c6

If the DC heater relief valve lifts frequently, the cause can be excessive __________.

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🔍 Key Concepts

• DC heater (direct-contact feedwater heater) function in a marine steam plant • Relationship between relief valve operation and pressure in the heater shell • Which inputs (condensate, recirculated feed, makeup feed, or auxiliary exhaust steam) most directly affect shell pressure

💭 Think About

• First, think about what a DC heater relief valve is protecting against: is it high level, high temperature, or high pressure? • Of the four choices, which flow or condition would most directly and quickly raise the pressure inside the heater shell to the point where a relief valve would lift? • Consider which streams usually enter the DC heater at or near saturation pressure and are used to heat the feedwater—how would a change in that source affect the relief valve?

✅ Before You Answer

• Verify which stream controls the heating steam pressure on the shell side of the DC heater. • Check whether increased water flows (condensate, recirculated feed, makeup) would tend to increase pressure, or mainly affect level and temperature instead. • Confirm your understanding that a relief valve is primarily a pressure safety device, not a level controller.

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Question 1 of 20

If the DC heater relief valve lifts frequently, the cause can be excessive __________.

condensate supplied to the DC heater

feedwater recirculated from the feed pump

makeup feed introduced to the system

auxiliary exhaust steam pressure

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Question 1 / 205eccef9cbacbc34ba4d457c6

Question 1 of 205eccef9cbacbc34ba4d457c6

If the DC heater relief valve lifts frequently, the cause can be excessive __________.

Back

Question 1 of 20

5eccef9cbacbc34ba4d457c6

If the DC heater relief valve lifts frequently, the cause can be excessive __________.

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