Rethinking the design of different parts of the free overflow system based on multi-level risk analysis (Case Study Ghezel dash)

In this research, considering the issue of rethinking the design of different parts of the open overflow system based on the multi-level risk method in the implementation of the Qezal Dash overflow project, the statistical community of the research, in addition to the opinions of all managers and stakeholders of the Qezal Dash dam, including the opinions of experts He has also been an expert in the subject of research.In this section, expert opinions regarding the issue of multi-level risk method of each of the processes and executive departments in the field of support and elimination of safety risks of Qezal Dash Dam have been investigated. Examining the opinions of experts has shown that reducing the safety risks and risks of Qezal Dash dam in terms of time and money in the implementation stages in the field of support and elimination of safety risks of Qezal Dash Dam can greatly reduce both the time of doing the work and the risks. to reduce the safety and anticipated risks of Qezel Dash Dam.The investigation showed that the risk of errors in the control structure has the highest risk (47.167 times) and rethinking in this part has the highest degree of importance. The investigation has shown that the risk of cavitation phenomenon (37.668 times) has the highest risk after the risk of defects in the control structure, and rethinking in this section has the highest degree of importance. The investigation showed that the risk of imbalance in the discharge channel (30.666 times) compared to the existing capacity after the risk of defects in the control structure and the risk of cavitation phenomenon has the highest risk and rethinking in this part has the highest degree of importance.