The Slack Line Monitoring and Control application helps to identify in advance undesired slack line conditions. It is also used to set the optimal operating pressure at critical points along a pipeline in order to reduce pump power consumption and to save costs.
The basic principle is a closed-loop control system to automatically keep a pressure at a defined value. A pressure set-point needs to be assigned and a PID controller is used to optimise the control response (i.e. pump speed or valve position).
At critical points where instrumentation is not available (e.g. highest points of elevations) the corresponding values will be provided by the RTTM.