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Rotork Fluid Systems has revealed that its Go range of gas-over-oil pipeline valve actuators has been selected for use on a Class 300 sour gas gathering system and pipeline owned by Murphy Oil.

The project is located in the remote area of north-eastern British Columbia in Canada, where ambient seasonal temperatures can fluctuate between +30C and -40C.

The application is a Class 300 sour gas (0.1 per cent H2S) gathering system and pipeline owned by Murphy Oil.

Known as the Tupper West Gathering System, the project follows Murphy Oil’s acquisition of the Tupper Field leases in 2007.

For the project, 20 Rotork Go actuators have been ordered: three for barrel isolation and 17 for pipeline emergency shutdown duties.

The Rotork actuator design was selected due to the remote geographic location and challenging environment of the application, demanding long-term reliability and low maintenance.

Rotork Go actuators are designed to use pipeline gas as the power source and are available with control configurations to suit virtually any operational requirement.

Low- or high-pressure control logic options, speed control in both directions and hydraulic manual override are among the standard features.

With torque outputs up to 600,000Nm (5,000,000lbf-in), Rotork Go actuators are certified to IP66M/67M, Atex 94/9/EC and in accordance with PED 93/27/EC.

For this project, the actuator electrical components are CSA Class 1, Division 1 approved.

A separate sweet fuel gas line provides the power source for the actuators.

The order has been supplied by Rotork Fluid Systems’ agent in Alberta, CE Franklin.

Franklin has also fitted the actuators to 16in ASME Class 300 ball valves in its workshop facilities at Edmonton.

Rotork Fluid Systems

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