University laboratories are essential for experimental teaching, scientific research, and technological innovation, but they also pose multiple safety risks, including hazardous chemicals, specialized equipment, biological materials, radiation sources, electrical facilities, and laboratory waste. In many universities, laboratory safety inspections are an important management tool; however, several practical problems persist, including insufficient integration of inspection forces, weak linkage between inspection and rectification, limited professional support for high-risk hazards, and inadequate digital traceability. These challenges make it difficult to convert inspection results into continuous risk control. Considering the requirements of laboratory safety governance and the dual-prevention mechanism of risk grading control and hidden-hazard investigation, this study aims to construct a systematic, collaborative, and closed-loop laboratory safety inspection system, “four inspections and one supervision,” and to explore its operational logic and practical value in university laboratory safety management.
A problem-oriented design approach was adopted. Based on national policies, laboratory safety standards, and the actual needs of university laboratories, the study first analyzed the limitations of conventional inspections, particularly the separation of hazard identification, rectification assignment, process tracking, and final verification. A microgrid-based responsibility structure was then designed, linking laboratory rooms, personnel, hazardous sources, and management roles to specific responsibility units. Supported by a PC- and mobile-based laboratory safety inspection system, the process was digitized from task creation and automatic notification to on-site recording, rectification dispatch, progress tracking, review, and closure. The “four inspections” comprise self-inspection, mutual inspection, specialized inspection, and comprehensive inspection. “One supervision” refers to safety oversight, emphasizing external professional diagnosis and rectification implementation. Self-inspection ensures routine responsibilities at the college and laboratory levels; mutual inspection promotes cross-unit perspectives and experience sharing; specialized inspection targets high-risk professional fields; comprehensive inspection focuses on hierarchical, risk-based oversight; and supervision ensures hidden hazards are corrected through a closed-loop mechanism. Institutional, organizational, technological, and safety-culture measures were also established to support stable system operation.
The system transformed laboratory safety inspection from a fragmented activity into an integrated governance process. The microgrid structure clarified relationships between inspection tasks and responsible personnel, enabling hidden hazards to be assigned and tracked until completion. The combination of self, mutual, specialized, and comprehensive inspections improved the coverage and depth of hazard identification, detecting common risks through routine management and professional or concealed risks through targeted expert-supported inspections. The information platform enhanced efficiency, transparency, and traceability, managing inspection records, rectification requirements, responsible personnel, deadlines, review results, and closure status online, thereby reducing unresolved or repeatedly neglected hazards. The supervision mechanism strengthened accountability by linking inspection findings with rectification verification, notification, interviews, and assessment measures. In practice, the system fostered a coordinated pattern in which university-level management, colleges, laboratories, experts, and frontline users actively participate in safety governance according to their roles.
The “four inspections and one supervision” system provides a practical framework for improving university laboratory safety inspections. Its core value lies in integrating multiple inspection methods, grid-based responsibility assignment, professional support, and information-based closed-loop management into a single governance mechanism. The system addresses the common issue of emphasizing inspection while neglecting rectification, strengthens the connection between risk identification and rectification, and supports the transition from passive, fragmented control to proactive, systematic safety management. This framework may serve as a reference for universities seeking to establish a normalized, traceable, and sustainable mechanism for laboratory safety inspection and hidden-hazard rectification.
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