Identifying the Threshold of the Effect of Systematic and Unsystematic Risks on the Supply Chain of the Oil-Petrochemical and Chemical Industries (Hybrid Fuzzy Delphi Models Type 3 Threshold Panels)

The purpose of this study is to identify the threshold of systematic and non-systematic risks to the supply chain of oil, petrochemical, and chemical industries. The period of this research is 2011-2021. This research has two communities. The first society is the experts in the petrochemical and chemical industries, and the second society is the active firms in the petrochemical and chemical industries on the Tehran Stock Exchange. In this research, 99 risks affecting the supply chain of oil, petrochemical and chemical industries were investigated in the form of two categories: unsystematic risk factors (77 indicators) and systematic risk (22 indicators). Based on the expert’s opinion, using the Delphi-fuzzy type 3 approach, 23 unsystematic risk indicators and 13 systematic risk indicators were selected. Based on the principal component analysis approach, systematic and unsystematic risk components were extracted from the selected variables. The results of the PSTR model between the supply chain and systematic risk (0.353 negative impact above the threshold; 0.218 positive impact below the threshold) and unsystematic risk (0.413 negative impact above the threshold; 0.237 positive impact below the threshold) confirmed the behavior of the threshold.