The regulations in the management plan are subject to inspections by inspection agency Control Union Certifications (CUC). They inspect the vessels and the sieving stations. A report will be made from every inspection round and will be judged by the CVO. An overview of all the inspection reports can be found here.
Besides that, all the sieving stations register the sievage percentages of all the participants and send these to the CVO. The CVO collects the data and composes an overview on a monthly basis of all the sievage percentages. The monthly overviews can be downloaded here.