The evaluation of plastic flakes raw material suppliers by DEA-SCOR model in a recycling plant in Indonesia

PT Tridi Oasis Group is a local recycling company in Indonesia. The main product of Tridi Oasis is plastic flakes that are chopped from Polyethylene Terephthalate (PET) bottle waste. Plastic sources as raw materials were received from suppliers in public disposal sites or collector stalls. However, not all suppliers have a good performance, which disrupts the production process and their reverse supply chain. Thus, supplier performance will be measured using the Supply Chain Operations Reference (SCOR) framework model through a series of questionnaires. The results were then processed and calculated using the Expert Choice software with the Analytical Hierarchy Problem (AHP) method. After the performance appraisal indicators or KPIs were validated, efficient value calculations were conducted using the Data Envelopment Analysis (DEA) method. From the experiments, it was found that the ranks 1, 2, 3, and 4 were obtained by Supplier A, Supplier C, Supplier E, and Supplier B respectively with efficiency values of 1.00, 0.83, 0.57, and 0.38.