The Performance Evaluation of the Instrumentation Equipment Suppliers of the Borzouyeh Petrochemical Company Using the Data Envelopment Analysis and the Nash Game Approach

Given the increasing competition in global trade and the needs of domestic and foreign markets, evaluating the suppliers’ performance quality is essential for petrochemical companies, because it leads to improved competitiveness and increased business opportunities. Therefore, in this research, a mathematical model based on the data envelopment analysis and the Nash approach has been used to evaluate the suppliers which have a wide range of activities and highly competitive advantages. For the case study, the performance of 17 suppliers of instrumentation equipment in Borzouyeh Petrochemical Company has been evaluated. First, using the opinions and experiences of petrochemical company experts, 22 criteria effective in assessing the quality of suppliers of instrumentation equipment were identified and the relationships between them were also analyzed. These criteria were divided into four main categories: "economy and cost, quality and technology, supplier characteristics and services provided by the supplier". Based on the selected criteria and using the mathematical model of the research, the performance of each supplier was evaluated. Finally, after performing the analysis by GAMS software, the suppliers were ranked according to the performance obtained from the final model. As a result, the Pars Sanat Kaveh Company with an efficiency of 0.9858 was selected as the top supplier.stage.