###### Abstract  
Performance safety is one of the important goals for the high-quality development of modern performance services. The in-service stage suspension equipment that has been put into use is one of the most frequently used and most closely related stage machinery in performances, and there are often significant safety hazards during its use. In response to the current lack of safety risk assessment methods and incomplete assessment techniques for in-service stage suspension equipment, this paper proposes a safety risk assessment method for in-service stage suspension equipment based on grey fuzzy comprehensive evaluation, with professional heaters as the target scenario. This method first identifies risk factors based on Failure Mode and Effects Analysis (FMEA), then uses the grey relational analysis (GRA) method for risk factor analysis, and finally adopts the fuzzy comprehensive evaluation (FCE) method to achieve safety risk level assessment. By constructing and analyzing an evaluation model for professional theater stage suspension equipment, the safety risk levels and corresponding safety risk factor rankings of performance accidents such as electric shock, falling, and failure can be obtained, and measures to reduce risks can be provided based on the most important risk factors. The research results show that more attention should be paid to the influence of human factors in the safety assessment and detection of in-service stage suspension systems. The research in this article is of great significance for improving the safe use of in-service stage suspension equipment, enhancing the level of performance safety management, and improving the quality of performance equipment services, laying the foundation for the formation of relevant regulatory systems and standards. safety risk assessment; fuzzy comprehensive evaluation; grey relational analysis; Failure Mode and Effects Analysis; stage suspension equipment accident +
Footnote †: journal: applied sciences  
1
Footnote †: journal: applied sciences  
Zhibin Su  
1 State Key Laboratory of Media Convergence and Communication, Beijing 100024, China;  
[EMAIL_ADDRESS] (Z.S. ); [EMAIL_ADDRESS] (H.W.) Key Laboratory of Acoustic Visual Technology and Intelligent Control System, Ministry of Culture and Tourism, Beijing 100024, China; [EMAIL_ADDRESS]. accidents related to performance equipment accounted for over 70%. Therefore, whether performance equipment can provide safe and high-quality services has become one of the key focuses in the performing arts technology industry. Among all performance equipment, stage suspension equipment is the device used in theaters and stages to meet the needs of stage performances and provide services for performances. It usually includes suspension rods, single-point cranes, electric hoists, etc. Stage suspension equipment is commonly used to suspend curtains, performance equipment, and scenery and also to lift and lower specific performance equipment. The statistical results of performances in a domestic theater from 2008 to 2018 show that the overall utilization rate of stage suspension equipment, such as suspension rods, exceeds 76.47% [3]. As one of the most frequently used pieces of equipment in stage machinery, it plays a very important role in performance activities. The suspension machinery consists of six core systems, with the power supply system providing a basic power guarantee, the safety protection system handling sudden danger situations, and the load-bearing components hanging other performance equipment such as lights and speakers. A steel wire rope is wound to drive them, and then a motor drives the lifting and lowering of the load-bearing components, and precise control is achieved through the electrical control system. The control systems of existing stage suspension equipment are not completely identical, and the coordination of core systems is complex, which leads to difficulties in personnel operation.