The issue is a brownfield one. These oily water separators both run at the same time, there is no redundancy. We are trying to retrofit a PWRI system into an existing design. If we only had one separator as you say we would not have a problem. There appears to be an error in my original text...
I am trying to design a control system across 2 oily water separators, tying into dedicated pumps and the outlets of which are tying into a joint header before going into a desanding unit, the problem is the level control d/s of the desander and minimum flow control tie-in. The two options are...
