Question 378Steam Plants - 1st Asst/Chief70% to pass
If a tube should leak in an operating main steam turbine lube oil cooler, the water will not immediately contaminate the oil because the _______________.
AI Explanation
The correct answer is C) the oil pressure is greater than the water pressure.
In a main steam turbine lube oil cooler, the oil pressure is typically higher than the water pressure. This means that if a tube should leak in the cooler, the higher oil pressure will prevent the water from immediately contaminating the oil. The oil will push the water out, rather than allowing the water to enter the oil system.
The other answer choices are incorrect because they do not accurately describe the pressure relationship between the oil and water in this situation. The second-stage discharge valve, plug-type bypass valve, and cooling pump would not directly prevent water contamination due to a leaking tube.
Related Questions
#376 The component labeled "II", as shown in the illustration is called the _______________. Illustration SE-0013 #377 When a sudden increase in pressure occurs in a forced lubrication system, you should check for a _______________.#379 If a lube oil pump fails to build up discharge pressure, the cause could be the _______________.#380 While a vessel is underway, which of the conditions listed would indicate a leak in the lube oil cooler? #381 No lube oil appearing in the sight glass (bull’s-eye) of a gravity type system is a positive indication of _______________.