http://www.yokogawa.com/success/ Executive Summary Seibu Oil Company Limited, a subsidiary of Showa Shell Sekiyu K.K., operates a 120,000 barrel per day oil refinery in Sanyo Onoda that supplies a wide range of environmentally friendly petroleum products to Showa Shell Sekiyu and other companies in the region. The refinery has secondary processing facilities that include vacuum distillation, diesel hydro desulfurization, continuous fluid catalytic cracking, and naphtha hydrotreating units, etc. To improve the efficiency of this refinery’s offsite operations, Seibu Oil decided to replace its Yokogawa CENTUM-XL distributed control system and other legacy computer systems with Yokogawa CENTUM VP production control and oil movement system (OMS). To mi

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