Physical Location And Placement Guidelines - Baker Hughes Masoneilan SVI II ESD Quick Start Manual

Physical Location and Placement Guidelines

When determining the location of the SVI II ESD adhere to the following guidelines:
Necessary Precautions
To avoid injury or affecting the process when installing or replacing a PST controller on a control
valve, ensure that:
It is now safe to disconnect and remove any valve mounted equipment that is being replaced.
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The SVI II ESD must be accessible with sufficient room for cabling and
pneumatic connections and must allow manual proof testing.
Pneumatic piping to the actuator must be kept as short and straight as
possible to minimize the airflow restrictions and potential clogging of the
line. Long or kinked pneumatic tubes may also increase the valve closure
time.
The Breather/Vent port must be accessible and must be inspected for
obstruction during manual proof testing.
The SVI II ESD must be mounted in a mild vibration environment (see
specifications at the end of this document). If excessive vibration can be
expected special precautions must be taken to ensure the integrity of
electrical and pneumatic connectors or reduce the vibration using
appropriate damping mounts.
If the valve is located in a hazardous area make sure the area has been
certified as safe or that all electrical power to the area has been
disconnected before removing any covers or disconnecting any leads.
Shut off air supply to the actuator and to any valve mounted equipment.
Ensure the valve is isolated from the process by either shutting off the
process or using bypass valves for isolation. Tag shutoff or bypass valves to
guard against a turn-on while work is in progress.
Bleed air from actuator and check that valve is in its de-energized position.
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