While pumping ballast the Chief Mate reports...

Question 1 / 205eccef9bbacbc34ba4d454fb

Question 1 of 205eccef9bbacbc34ba4d454fb

While pumping ballast the Chief Mate reports there is a decrease in vacuum on the pump suction when drawing from a partially full saddle tank. Which of the following could be a possible cause?

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Question 1 of 20

5eccef9bbacbc34ba4d454fb

While pumping ballast the Chief Mate reports there is a decrease in vacuum on the pump suction when drawing from a partially full saddle tank. Which of the following could be a possible cause?

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🔍 Key Concepts

• Behavior of vacuum gauges on the suction side of a centrifugal pump • How air leaks vs flow restrictions (closed valves, clogged strainers) affect suction vacuum • Effect of drawing from a partially full saddle tank (possibility of air being introduced)

💭 Think About

• Ask yourself: when the pump has to work harder to pull liquid (more restriction), does the suction vacuum reading usually go up or down? • Which options describe a restriction to flow, and which describe a condition that could let air into the suction line? • Why might the fact that the tank is partially full and is a saddle tank make it easier for air to get into the suction side?

✅ Before You Answer

• Identify which choices (B, C, D) would tend to increase suction vacuum because the pump is pulling against a restriction. • Identify which choice could introduce air into the suction side and therefore reduce the vacuum seen at the gauge. • Confirm in your mind that a drop in vacuum usually means the pump is not "pulling" as hard on solid liquid, often because air is entering or the effective suction head has changed.

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Question 1 of 20

While pumping ballast the Chief Mate reports there is a decrease in vacuum on the pump suction when drawing from a partially full saddle tank. Which of the following could be a possible cause?

An air leak in the suction piping from the tank.

The suction valve from the pump is partially closed.

The tank suction valve is partially closed.

The pump suction strainer is clogged.

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Question 1 / 205eccef9bbacbc34ba4d454fb

Question 1 of 205eccef9bbacbc34ba4d454fb

While pumping ballast the Chief Mate reports there is a decrease in vacuum on the pump suction when drawing from a partially full saddle tank. Which of the following could be a possible cause?

Back

Question 1 of 20

5eccef9bbacbc34ba4d454fb

While pumping ballast the Chief Mate reports there is a decrease in vacuum on the pump suction when drawing from a partially full saddle tank. Which of the following could be a possible cause?

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