Question 93General Subjects - Assistant Engineer

The correct answer is C) a malfunctioning brine pump. If a higher than normal water level is observed through the inspection port of a flash evaporator, it indicates that the brine pump is not functioning properly. The brine pump is responsible for circulating the concentrated brine through the evaporator and maintaining the correct water level. A malfunctioning brine pump would allow the water level to rise excessively. The other options are incorrect because: A) improper vacuum would not directly cause a high water level, B) a clogged desuperheater water strainer would not affect the brine pump, and D) a leak in the feed water heater would not impact the evaporator water level.