A reactor is currently shut down at 180°F. Reactor vessel (RV) level is being monitored using a differential pressure detector with a wet reference leg.
The RV level instrument was calibrated at normal plant operating conditions.
The RV level instrument currently indicates __________ than actual RV level because, compared to the calibration conditions, there has been a significant change in the density of the fluid in the __________.
A. higher; reactor vessel
B. higher; reference leg
C. lower; reactor vessel
D. lower; reference leg
Share your understanding of this question with the correct explanation.