Workers who repair circuits, clean and oil machinery, clean jammed mechanisms, and rebuild equipment are at risk of injury if power is restored to equipment while being serviced. OSHA’s Lock-Out/Tag-Out regulations 29 CFR 1910.147 requires the use of locks and tags to isolate machinery from its energy source while being serviced. This video is a refresher course for workers previously trained in using lock-out/tag-out to prevent accidents and injuries. This course reviews the lock-out and tag-out devices available when working with electrical, hydraulic, and pneumatic energy. Viewers are taken through the steps for using lock-outs/tag-out procedures. These include identifying all energy sources, attaching lock-out/tag-out devices, and testing machinery after locks and tags have been put on. Use this refresher training to remind employees of the importance of lock-out/tag-out procedures and how they should be used to prevent serious on-the-job injuries.