Refer to the drawing of a reactor vessel level detection system (see figure below).
The differential pressure (D/P) detector was calibrated while the plant was at normal operating conditions.
With the plant initially at normal operating conditions, a reactor vessel head leak occurred.
Reactor vessel pressure decreased by 300 psia, and the ambient air temperature surrounding the reference leg increased by 80°F, where these parameters stabilized.
If the actual reactor vessel water level is 6 feet above the fuel, the reduced reactor vessel pressure will tend to make the indicated water level read __________ than actual level; and the increased reference leg temperature will tend to make the indicated water level read __________ than actual level.
A. higher; higher
B. higher; lower
C. lower; higher
D. lower; lower
Show Answer
Answer: A
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