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Production • Processing • Handling


Electric actuators in oil and petroleum industries


Michael Herbstritt looks at how the Indian Oil Corporation and Petro SA are using modular electric actuators.


of Indian Oil’s entry into petrochemicals. Actuators from AUMA’s established range of modular products were supplied to the scheme located in the Northern Indian state of Haryana. With a capacity of 800 000MT/year of ethylene production, the Naphtha installation required 75 actuators for valve control. Te major scale installation confirms AUMA’s ability to support blue-chip schemes. Te project is also an excellent illustration of the actuator manufacturer’s partnership approach – by working closely with the corporation, AUMA identified that both hard wired and bus technology were required, backed by master station support.


T


he Indian Oil Corporation Limited awarded a contract to AUMA for its Naphtha Cracker and Polymer complex. Te Naphtha Cracker project is widely viewed as representing the cornerstone


All actuators were supplied with control modules suitable for MODBUS RTU protocol. Additionally, SIMA master stations and hot standby master station with loop technology were provided. ESD functionality has also been achieved through hardwired operation. Te master stations in redundant configuration communicate through MODBUS RTU protocol with Yokogawa DCS CS 3000. AUMA also provided PCs to monitor the actuators’ functions via the SIMA master stations. AUMA South Africa has secured a contract for the company’s new Generation .2 actuators with Petro SA, formerly MOSSGASS. Products from the new actuator range will be


installed in an air separation plant built by Linde Air. Te plant has exclusively used AUMA actuators since it was built in 1990. With 24-7 operation, the actuation technology provides essential support


Fig. 1. AUMA actuator and master station as adopted by the Indian Oil Corporation.


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