Integrated cloud assessment of emergency response capability maturity in chemical parks based on "4SM" and improved portfolio empowerment

As an effective form of chemical industry, chemical park has gradually become an important support to promote global economic growth and a leading mode to improve the development of the industry. Firstly, to solve the problems of the uncertainty in the accident chain and the unclear information about emergency capability in the chemical park, an indicator system of emergency capability in the chemical park was created using 150 chemical accident cases, typical accident characteristics, complex network theory, and the "4SM" method. Secondly, a mix of dynamic and static weighting method was suggested, and an integrated cloud assessment model was built. The maturity level of chemical parks' emergency capability was assessed, and limitations were identified. The case study demonstrated that the maturity levels of emergency response capability of six chemical parks in China, were 36.2, 35.6, 48.8, 33.6, 55.9, and 43.8, respectively. Finally, the correlation analysis was used to verify the model. The comparative analysis results showed that the linear correlation of the experimental group and the control group was 0.916, and the two groups of values and fluctuation trends were consistent, indicating the reliability of the assessment model. The assessment methodology is of great significance for improving the emergency capability of chemical parks.