Actuator control network solution for Spanish chemical processing plant

26 March 2021

Almost 150 intelligent electric actuators on Rotork’s Pakscan control network have been ordered for the Quimica Puente Mayorga chemical processing plant in Spain.

The plant is one of the world's biggest producers of linear alkyl benzene, with paraffins, sulphonic acid and heavy alkylate among the other chemicals produced at the plant. It is owned by CEPSA, a Spanish multi-national oil and gas company with operations throughout Europe. 

Rotork’s IQ range of intelligent electric actuators were installed on gate valves and control the flow of unprocessed fluids, as well as providing Emergency Shutdown (ESD) functionality. In an emergency, they release the fluids into suction and discharge pumps for isolation.

The actuators have been installed on a double loop system with a Rotork Master Station on a Pakscan control network. The installation of this control network has enabled CEPSA to reduce wiring costs, through the use of a single twisted pair, instead of more costly multicore cable. This was also a cost-efficient solution due to the short commissioning time of the product and the increased plant productivity that Pakscan can provide. Additionally, with one cabinet acting as an access point to over 240 field devices within a 20 km loop, it helps to prevent the spacing issues which control cabinets might otherwise create.

Rotork also delivered a bespoke cabinet to be installed with the Rotork Master Station. While the Rotork Master Station is accessible to senior staff, the cabinet provides an additional access point which gives site operators the ability to open or close valves in the event of an emergency. Pakscan was essential for this application, as the space taken up by wiring would have made it impossible to implement via other means.

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