The shaft sleeves have recently been...

Question 1 / 205eccef9bbacbc34ba4d454c0

Question 1 of 205eccef9bbacbc34ba4d454c0

The shaft sleeves have recently been replaced on a centrifugal salt water service pump. The packing gland is now drawn tightly up against the casing. Despite the use of standard procedures to tighten the packing gland, water continues to pour out along the shaft. The probable cause for this situation is that __________.

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🔍 Key Concepts

• stuffing box operation and purpose • role of the lantern ring and sealing water in a centrifugal pump • what happens when the packing gland is over-tightened but leakage still occurs

💭 Think About

• Think about why water would still be pouring out even though the packing gland is fully tightened against the casing—what does that tell you about the packing and internal parts? • Which component inside the stuffing box must be complete and correctly installed so that sealing water is distributed properly around the shaft? • Consider which option describes a condition that would let water bypass the packing instead of being properly controlled by it.

✅ Before You Answer

• Verify which choice directly affects how sealing water is distributed inside the stuffing box, not the external system pressure. • Check whether an O-ring on the shaft sleeve would cause visible leakage at the stuffing box or somewhere else in the pump. • Make sure you understand how many pieces the lantern ring is typically made of and what happens if it is incomplete.

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Question 1 of 20

the shaft sleeve "O" ring seals were not installed

suction head pressure has become excessive

the sealing water flow to the stuffing box is blocked

only two sections of the lantern ring were installed

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Question 1 / 205eccef9bbacbc34ba4d454c0

Question 1 of 205eccef9bbacbc34ba4d454c0

Back

Question 1 of 20

5eccef9bbacbc34ba4d454c0

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