Actually we facing problem due of improper draining of water after reactor cooling due to shot coke production. Shot coke holds the water inside the bed and in time of unheading sometimes gust water along with coke came out suddenly.
We are having an old Hahn & Clay system in which un-heading operation is very risky due to the residual water in the reactor like old manual system. So to ensure that all the residual water got drained from the reactor i was thinking of putting a ultra sonic flow meter (clamp on) in the drain line. Is it feasible?