Study on dynamic control structure of hazardous chemical accidents based on STAMP-24 model

Aiming at the complex problem of multi-organization interaction accident analysis, this study combines the STAMP model with the 24Model, applies the new model to the accidents at Xiangshui Jiangsu on March 21, 2019, and verifies the feasibility of the model. First of all, the cause of the accident is analyzed from four perspectives. Secondly, it analyzes the failure of safety restraints at the time of the accident. Finally, by analyzing 77 laws, rules, and standards in China, the interaction between all levels is investigated. The results show that the STAMP model contains 46 fault constraints, including 19 effective fault constraints and 72 safety constraints. It was also found that the number of major failure constraints at the company and institutional levels accounted for the largest proportion of failure constraints at the three levels. One hundred percent of constraints fail at the company and institutional levels, 69.2% at the corporate and institutional levels and the basic levels, and 19.5% at the corporate and institutional levels and supervisory levels. In addition, the study shows how all four levels of feedback cycles of the STAMP-24 model change during the failure process, indicating that these cycles have an impact on the way accidents occur. This study provides a reference for multi-organizational interaction accidents.