Control Systems Part 3: Rules for Tuning Loops Prior to Startup

This is part two of the GATEKEEPER series on control systems tuning. To effectively tune a control loop, there needs to be an understanding about the dynamics of the system.

This series of GATEKEEPERS will provide methods for using readily available process design data for determining effective tuning parameters before startup.

Chemical injection systems are difficult to size because of uncertainties including flowrate, chemicals used and their treatment rate. If conservative estimates are used for all parameters, the injection system may be oversized, at least for some wells.