03-设备维修前安全隔离资料

Lockout/Tagout (LOTO) is a regulated safety procedure designed to prevent unexpected energization or startup of machinery during maintenance, repair, or servicing. Governed by OSHA 1910.147, LOTO ensures worker safety by systematically isolating all hazardous energy sources—electrical, mechanical, hydraulic, pneumatic, chemical, thermal, and stored energy—through physical locks and warning tags. The process follows a five-step sequence: preparation, shutdown, isolation, lockout/tagout, energy verification, and re-energization. Lockout, using physical locks on energy-isolating devices, is required for effective isolation; tagging serves as a supplementary warning but is insufficient alone. Authorized employees perform LOTO tasks after training and certification, while affected employees must be informed and refrain from operating locked-out equipment. The program requires written procedures, regular training, audits, and clear communication, especially in multi-employer environments. Proper management of stored energy—such as residual pressure, capacitors, or mechanical tension—is critical. LOTO is integrated into broader safety systems, including maintenance schedules, process safety management, and work permit programs. Effective implementation relies on standardized tools, documented procedures, and continuous improvement. LOTO is a foundational element of industrial safety, reducing the risk of serious injury or death from unintended equipment startup.