Improving Control System Reliability by Proper Grounding System and Sound Engineering

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QSWP of Saudi Aramco is the biggest Sea Water Injection Plant is the world. For process control and monitoring Delta V DCS System is used. One area of QSWP “Old Treatment Modules” had very high nuisance Equipment Trips. To resolve this problem a new Grounding system was constructed for each Treatment Module and 29 High Power Solenoids at each Module were replaced by Low Powered Solenoids. Solenoids were connected directly to Delta V - DO Cards. This resulted in reduced equipment trips. Saving of $ 635,000 per year was achieved by way of production loss avoidance and Man-hour saving.

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