The system design
The system has been designed to operate one hydraulic operated valve actuator mounted in the production tubing string of the X-mas tree and process valves. The actuator is spring closed, the operating pressure will be 120 BAR.
The pump is hand driven and all the hydraulic energy will be stored in an accumulator.
Two electrical indicators are used to give indication upon the valve (fully open or fully closed).
The local shutdown function is activated by a mechanical three way valve, which is panel mounted.
Manual shutdown by a three way valve located at the front of the panel.
The remote shutdown function is:
Manual shutdown by a three way valve located in the field.
An accumulator is provided for pulsation damping, hydraulic storage and a smooth operation of the valve, so there will be no big pressure dips when opening the valve.