Question 61General Subjects - 1st Asst/Chief70% to pass
Which of the listed problems could produce a high absolute pressure within a flash type evaporator?
AI Explanation
The correct answer is B) a cracked distillate pump vent line.
A cracked distillate pump vent line can lead to a high absolute pressure within a flash type evaporator. This is because the vent line is designed to release any excess pressure buildup, and a crack or leak in this line would prevent it from functioning properly, causing the pressure inside the evaporator to rise.
The other options are incorrect because:
A) Seawater feed temperature below 165°F would not directly cause a high pressure in the evaporator.
C) Production of high salinity distillate would not lead to high pressure, as the evaporator is designed to handle changes in salinity.
D) A leak in the first stage demister would not cause a high pressure, as the demister is meant to separate the vapor from the liquid, not impact the overall pressure.
Related Questions
#59 The efficiency and output capacity of a low pressure distilling plant will be reduced if the last effect shell _______________.#60 In a flash evaporator, scale as a result of higher than normal temperatures is most likely to occur in the _______________.#62 The quantity and density of brine discharged from the last effect of a flash type evaporator should be kept at a constant value so as to _______________.#63 While the illustrated system is operated using the steam supply through "F" the strainer in line "4" becomes fouled, this will result in _______________. Illustration GS-0053#64 The efficiency and output capacity of a low pressure distilling plant will be reduced if the last effect shell _______________.