Patent ID: 11920720
Assignee: SAUDI ARABIAN OIL COMPANY
Field: Mechanical elements (Mechanical engineering)
Classification: CPC F  E | IPC E  F

Claim 8:
9. The water hammer mitigation system according to claim 7, wherein each of the first and second biasing members is an active biasing member actuated by an actuator and controlled by a control unit based on pressure sensor data, and wherein the control unit is configured to:
actuate the first and second biasing members to maintain the closed configuration based on a comparison of the pressure data indicating the pressure at the surge point and data representing a predetermined surge pressure threshold and a predetermined vacuum pressure threshold indicating that the surge pressure at the surge point is less than the predetermined surge pressure threshold, and the vacuum pressure at the surge point is less than the predetermined vacuum pressure threshold, wherein the first predetermined threshold pressure across the relief device corresponds to the predetermined surge pressure threshold at the surge point, and wherein the second predetermined threshold pressure across the relief device corresponds to the predetermined vacuum pressure threshold at the surge point;
actuate the first biasing member to move the first relief valve to the first open configuration in response to the comparison indicating that the surge pressure at the surge point has reached the predetermined surge pressure threshold; and
actuate the second biasing member to move the second relief valve to the second open configuration in response to the comparison indicating that the vacuum pressure at the surge point has reached the predetermined vacuum pressure threshold.