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Control of Hazardous Energy (Lockout/Tagout)
29 CFR 1910.147


Workers performing service or maintenance on machinery and equipment may be exposed to injuries from the unexpected energization, startup of the machinery or equipment, or release of stored energy in the equipment.

The Lockout/Tagout standard requires the adoption and implementation of practices and procedures to shut down equipment, isolate it from its energy source(s), and prevent the release of potentially hazardous energy while maintenance and servicing activities are being performed. It contains minimum performance requirements, and definitive criteria for establishing an effective program for the control of hazardous energy. However, employers have the flexibility to develop lockout/tagout programs that are suitable for their respective facilities.

This tutorial summarizes for you the key components of the standard in a question/answer format. This tutorial is intended to guide the user in understanding aspects of the Lockout/Tagout standard. It is not to substitute for compliance with the plain terms of the standard. Nothing in this tutorial is intended to diminish or otherwise affect OSHA's authority to enforce the requirements of 29 CFR 1910.147 or of the OSH Act, nor is it intended to create any legally enforceable right or benefit in any person.

Information is provided on the following topics:

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bulletScope and Application
bulletEnergy Control Program
bulletEnergy Control Procedures
   - Documentation
bulletEnergy Control Procedures
   - Required Content
bulletPeriodic Inspection
bulletEmployee Training and
bulletAdditional Training (Tagout System)
bulletEmployee Retraining
bulletNew or Modified Equipment
bulletFull Employee Protection
bulletMaterials and Hardware
bulletApplication of Energy Control
bulletRelease from Lockout/Tagout
bulletTesting of Machines
bulletOutside Personnel (Contractors)
bulletGroup Lockout/Tagout
bulletShift & Personnel Changes
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