Question 183Steam Plants - QMED70% to pass
Which of the conditions listed could prevent a centrifugal condensate pump from developing its rated capacity?
AI Explanation
The correct answer is B) Closing the water seal line to the packing gland.
Closing the water seal line to the packing gland of a centrifugal condensate pump would prevent the pump from developing its rated capacity. The water seal line is essential for maintaining the proper lubrication and cooling of the pump's packing gland. Without the water seal, the packing gland would overheat, leading to increased friction and reduced pump efficiency, ultimately preventing the pump from reaching its rated capacity.
The other options are incorrect because: A) Flooding the main condenser hotwell would not directly affect the pump's capacity, C) Operating the pump with a positive suction head would not prevent the pump from developing its rated capacity, and D) Venting the pump to the vacuum side of the condenser would not cause the issue described.
Related Questions
#181 If the boiler water and condenser hotwell levels are normal, but the DC heater level is only 30% of full, you should _______________.#182 Excessive recirculation of condensate should be avoided, as it can cause _______________.#184 Excessive water loss from the main feed system can be caused by _______________.#185 Saltwater contamination of condensate could occur at which component? #186 Serious tube leaks in the air ejector after condenser assembly may cause _______________.