Oil refineries are large scale plants. Due to the high capacity, many of the units are operated continuously at steady state for long periods of time. DCS systems are deployed in complex oil refining processes, which allow the entire system of controllers to be connected by networks for communication and monitoring. A sudden breakdown in the DCS system can be very costly for the production line, so the process control system must be designed with full redundancy. To enhance the safety of the operating environment, auxiliary networking systems that extend across the entire plant play an integral part in a plant's safety.>>more |