ABB’s commitment to ‘Evolution without obsolescence’ provides plant owners with the ability to extend the operating life of their control systems and improve the profitability of their investments through seamless evolution, thus avoiding the costs and risks associated with ‘rip-and-replace’ upgrade methods. ABB’s evolution approach offers plant owners the flexibility to upgrade the DCS in accordance with their business and plant operational needs rather than on component obsolescence.
ABB’s evolution program supports a stepwise approach in which components or process areas are upgraded individually as required during either normal operations or as part of scheduled maintenance activities, while leaving the rest of the system undisturbed.
These options utilize the system to its full potential. Evolution alleviates the need for large capital investment and the resultant cash flow impact associated with a full-scale ‘rip-and-replace’ approach that requires a major outage and cost-intensive engineering, design, and construction efforts. Perhaps the most significant benefit of ABB’s evolution concept is to mitigate the risks associated with ‘ripand- replace,’ such as poor design quality, resource allocation, plant trips, lost generation, project overruns and commercial/legal issues.
Link to comparison "Evolution advantages versus "Rip-and replace" risks"