In addition to using PSS 4000, Arcelor Mittal also commissioned Pilz to completely overhaul the plant. One challenge in this modernisation process was the frequent shutting down of the start-up burners that ignite the main burners, which repeatedly led to extended outages. The existing burner control module and flame monitoring via UV cells were not an optimum solution: as soon as one of the cells was defective, the entire plant was often stopped for at least 40 minutes, as the analysis options when searching for the defective UV cell were limited, costing valuable time. The current solution replaces the UV detectors with ionisation; the tasks of the burner control module are performed by the burner management software package from the automation system PSS 4000. Now the processes don’t just run virtually undisturbed – with rapid diagnostic options thanks to efficient visualisation in the control cabinet, which constantly displays the exact status of the 10 burners, longer downtimes are a thing of the past. http://www.pilz.com
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