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- First Assistant Engineer (Steam-Motor-Gas Turbine Plants (Unlimited)) »
- Q511 - General Subjects I
63. While operating a two-stage flash-type evaporator, designed to operate in sea water of 70°F, the current seawater temperature is 50°F, while the salt water feed temperature is maintained at 170°F. The three-way solenoid valve trips, directing the distillate pump discharge to the bilge. Which of the following conditions is the probable cause for this occurrence?
Colder seawater combined with a constant high feed temperature increases superheating, leading to violent flashing and brine carryover into the distillate, triggering the valve to divert the distillate to the bilge.
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