Australian LNG Project Adds Rotork Actuators

A customer has ordered more than 270 Rotork process control actuators for an LNG project in Australia. The quarter-turn CVQ electric actuators will operate ball and v-ball valves on separator skids to control the water extraction process at an onshore natural gas production site in the Surat Basin. The ball valves will shut off the gas and the v-ball valves will carry out flow control by controlling pressure during well operation.

The basin, located in southwest Queensland, is used by Shell’s QGC business to develop natural gas for domestic and international markets through the project. Here, natural gas is extracted from wells drilled into coal seams in the Surat Basin before being transported to a collection point for the removal of water and condensates.

The CVQ units offer resolution figures of 0.1% and have the ability to eliminate position overshoot, according to Rotork. The actuators, powered by 24 Vdc and controlled by the HART protocol for the project, also hold IEC Ex certification and an IP68 rating.

Rotork’s CVA range of actuators, which include the CVQ and CVL linear variant, are suitable for almost all part-turn and linear control valve applications. The actuators feature an onboard datalogger and configurable fail-to-position option using supercapacitor technology. Speed control can be adjusted and position control can be executed using a 4 to 20 mA signal.

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