Abstract
Problems associated with process control equipment, such as valves, can be very subtle and difficult to detect. However, the impact that these problems can have on the performance of a process control system can be significant. This paper explores the use of dynamic, mechanistic modelling as a tool for detecting problems associated with process control equipment and as a technique for validating that corrective action which will solve these problems before such action is applied to the plant. The paper describes a case-study application at an INEOS ChlorVinyls site in Runcorn. In this case study, a dynamic model was able to identify the cause of a serious plant problem and determine the necessary re-configuration of the plant control systems, such that plant operations were improved.
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