Question 417General Subjects - Assistant Engineer70% to pass
Charring or glazing of the inner circumference of the packing rings in a centrifugal pump is caused by _______________.
AI Explanation
The correct answer is D) insufficient lubrication of the packing.
Charring or glazing of the inner circumference of the packing rings in a centrifugal pump is caused by insufficient lubrication of the packing. Proper lubrication is essential to reduce friction and heat buildup within the packing, which can lead to this type of damage. Failure to seat the packing rings (A), packing ring rotation (B), or under-tightening the packing (C) can also contribute to issues, but insufficient lubrication is the primary cause of the charring or glazing described in the question.
Related Questions
#415 Excessive air leakage into the suction side of a centrifugal pump would be indicated by which of the following operational problems? #416 A centrifugal pump may fail to deliver water when first started if the _______________.#418 If a centrifugal pump were continually operated with the discharge valve closed the _______________.#419 Pitting in the suction areas of a centrifugal pump bronze impeller is usually caused by _______________.#420 The total length of stroke in a reciprocating steam pump can be adjusted by _______________.