Q & A > Question Details
Currently it has been observed in CRU unit that DP across the 3rd reactor is increasing from 0.3 to 0.56 during raining time and again coming down to 0.3 after the rain stop. So, what could be the reason behind it? Is it happening due to temperature reduction of the circuit or DP meter malfunctioning during rain?
11/06/2018 A: Ralph Ragsdale, Ragsdale Refining Courses, ralph.ragsdale@att.net
If the DP cell is mounted near the bottom of the reactor, and the line normally full of vapor becomes full of liquid, the DP reading would increase when it rains. That can be confirmed by calculation. If the DP cell is top mounted, the DP would decrease. Different arrangements can be tried on the run if the valves hold.