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The obvious advantage of the APC and the DCS is that the outcome meets all of the customers requirements Figure 7. APC stabilizes blow flow Figure 8. APC reduces alkali losses in brown stock washing Figure 8a. Before APC The whole process of solving the optimisation problem and having that solution validated by the mill itself has made it possible for ABB to offer standardised solutions to other pulp mills these solutions are now called OPT800 CookC for continuous digesters and OPT800 Wash for brown stock washing. Finally the APC solution has proved to be a door opener not only for other APC opportunities but also for System 800xA DCSs as well. One recent example is a DCS order for the worlds largest pulp and paper mill which is being set up in Indonesia. One of the key customer considerations was to have a proven APC solution on top of the DCS the Mondi Swiecie project provided this.Figure 8b. After APC WORLD PULPPAPER46 PULP MILL OPTIMISATION