Besides innovation, maintenance and product quality monitoring, the main concerns for production sites are troubleshooting and process inefficiencies. When dealing with existing plants and processes, on-site observations play a critical role in issue solving and optimization. The reason for this is that practicalities are not captured in process schemes, plant data and product samples. To this end, NIZO offers its process scan, where an on-site visit by NIZO experts is an integral part of the research trajectory. This allows for any analysis results and plant data to be viewed in the right context, discuss with operations, and to take note of practical aspects that are missed in initial data transfer. Over the years NIZO has performed process scans for a wide variety of optimization and troubleshooting trajectories. The success of these scans can be attributed to the combined use of NIZO expert experience, analysis tools and applied models.