The Mud Pumps are equipped with a single mechanical barrier (Relief valve) which diverts the flow to discharge in case the working pressure exceeds the calibration. The Pump Overpressure Preventer works as a second barrier that can improve the management of any circuit overpressures. It is a software barrier that intervenes upon reaching a pressure threshold defined by the user with the aim of avoiding shock to the well and to the equipment.​

The proposed software control system is processing the circulation pressure signal of the circuit (SPP - Stand Pipe Pressure) and manages the Mud Pump as a function of the detected pressure.
Taken as 100% the value at which the mechanical relief valve is calibrated, two software intervention thresholds are inserted, which produce different effects.