June 2020, Vol. 247, No. 6

Tech Notes

Actuators Specified for Long-Haul Pipeline in India

A currently under construction 435-mile (700-km) pipeline from southern India to a key refinery has selected hundreds of Rotork actuators for the project, according a company spokesman. 

The pipeline company chose the CML-1500 and CML-3000 actuators “primarily for their fail-safe, motor-operated valve (MOV) and modulating globe valve operation,” Rotork said. The actuators will be installed at remote locations, where manual operation is not practical. 

Electro-hydraulic SI actuators will also be installed to provide safety critical fail-safe duties on the pipeline. These were selected due to certification requirements and high-torque output, the company said. 

The actuators have a linear torque output of up to 4,580 kN (1,029,625 lbf) and a part-turn torque output of up to 500,000 Nm (368,781 lbf).

Intelligent electric actuators will be installed on ball valves and plug valves along the length of the pipeline. These will be providing vital isolation duties, ensuring that the supplies of oil and gas can be cut off in the event of an emergency, therefore helping to eliminate the risk of fire or explosion.  

As many as 240 field devices on a 12.4-mile (20 km) two-wire loop can is controllable through a master station. 

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