Refer to the drawing of a reactor vessel differential pressure (D/P) level detection system that was calibrated at 1,000 psia (see figure below).
A reactor vessel cooldown has resulted in a decrease in reactor vessel pressure from 1,000 psia to 500 psia over several hours.
Without density compensation of the level instrumentation, at the end of the cooldown, reactor vessel level indication would indicate __________ than actual level because the density of the water in the __________ has changed significantly. (Assume the reference leg does not flash to steam.)
A. higher; reactor vessel
B. higher; reference leg
C. lower; reactor vessel
D. lower; reference leg
Show Answer
Answer: A
Share your understanding of this question with the correct explanation.