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Quality control7.1.TAPIO Quality controlMost TAPIO users utilize TAPIO as a routine paper quality control tool, to verify the on line control system measurements, and to make profile measurements of customers orders. TAPIO measurement data is usually stored to mill wide system, and can be used to a more thorough analysis later on if needed (customer reclamations, trends etc.) The new TAPIO Profiler is specially designed for fast, routine profile measurements. 7.2.Benefits Easily usable high-resolution data for reclamation handling and quality development purposes. On-line versus TAPIO measurements8.1.TAPIO Data advantagesEasily usable high-resolution data for reclamation handling and quality development purposes. 8.2.Benefits If on-line measurement gives wrong data then all the controls based on the measured data are also in correct and machine will have major runnability problems Example payback calculation: * 8 meter (300 inch) wide machine, producing 500 t/d of LWC * Due to the edge problem 0,2m (8") has to be trimmed off, I.e. becomes lost production * This translates into an overall 2.5% loss in produntion or 12.5 tons per day * Each lost ton costs $500, resulting in a 6250$ per day loss or over 2 million per year * A Well equipped TAPIO PMA costs $300,000 making the paybak time 1.6 months >> Paper machine wet end & Press part >> Size press & Coating head >> Calenders & Paper Formation Quality control & On-Line vs. TAPIO measurements |
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