This term is often misunderstood because it must be clearly defined to what level redundancy applies. Redundancy can provide a more reliable system, which will result in less down time and a better overall process, by eliminating the single point of failure which could cause an unexpected shutdown. The next issue concerns the location of control. Control loop update is a topic of concern. Risk management analysis should be considered as a guideline prior to the detail control design phase.
Electronic controls are more flexible, reliable and faster.
The electronic controls of today allow tighter control of the process which results in energy savings and therefore reduced operating costs to the end user. Modern micro-processor based control systems assure safe and reliable operation when applied properly. R. Power Recovery Expander Applied to Pressurized, Fluidized Bed Combustion, 1980. T. The Application of Large Induction Generator to a Fluid Catalytic Cracking Power Recovery Train . IEEE-IAS Annual Meeting, Denver, CO , October 1986.