Lousiana refinery retrofitted entirely with fieldbus

The Calcasieu refinery at Lake Charles, La., recently replaced its pneumatic control system with a Foundation fieldbus system that uses the PlantWeb open field-based architecture.Installation took less time than the alternatives considered, and plant operations improved through reduced product losses and higher throughput.Calcasieu refinery Processing portion of the Calcasieu refinery, Crude Unit No. 1 and naphtha stabilizer (right) and Crude Unit No. 2 (Fig. 1).Click here to enlarge imageThe Calcasieu plant (Fig. 1) is a topping refinery on the Calcasieu River estuary about 7 miles southwest of Lake Charles. Originally built in 1977 and later enlarged to a capacity of 22,000 b/d, it now...

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