Question 262Steam Plants - 1st Asst/Chief70% to pass
If the cooling water flow through the air ejector inter condensers and after condensers is inadequate, which of the problems listed will occur?
AI Explanation
The correct answer is B) Main condenser absolute pressure will increase.
If the cooling water flow through the air ejector inter condensers and after condensers is inadequate, it will result in a decrease in the efficiency of the air ejector system. This will cause the main condenser absolute pressure to increase, as the air ejector system is responsible for maintaining the vacuum in the main condenser.
The other options are incorrect because:
A) Air ejector nozzles eroding is not a direct consequence of inadequate cooling water flow.
C) DC heater level rising is not related to the issue of inadequate cooling water flow.
D) The after condenser being flooded is not a likely outcome of this specific problem.
Related Questions
#260 While underway the engineer on watch reports the vacuum in the main condenser has been gradually decreasing. Which of the following could be a possible cause? #261 Excessively hot water returning to an atmospheric drain tank indicates _______________.#263 On a steam turbine vessel with a propeller type, electrically driven, main circulating pump, one suspects condenser tube or inlet tube sheet fouling. Do not consider vacuum variations since they may be due to sea water temperatures. What on-board electrical test instrument can one use to verify condenser fouling? #264 If the salinity indicator periodically registers high salinity in the main hotwell, the cause may be _______________.#265 Dissolved oxygen in the condensate can result from _______________.