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

Application of Energy Control

To safely apply energy control to machines or equipment (using either lockout or tagout devices), authorized employees must perform certain procedures, in a specific order. What are the sequential procedures?

• Preparation for shutdown: Before an authorized or affected employee turns off a machine or equipment, the authorized employee must have knowledge of the type and magnitude of the energy, the hazards of the energy to be controlled, and the method or means to control the energy. (d)(1)

• Machine or equipment shutdown: The machine or equipment must be turned off or shut down using the procedures established for it to avoid any additional or increased hazards to employees as a result of the machine or equipment stoppage. (d)(2)

• Machine or equipment isolation: All energy-isolating devices that are needed to control the machine's energy source must be located. These devices must then be used to isolate the machine or equipment from its energy source(s).
  (d)(3)

• Lockout or tagout device application: Lockout or tagout devices must be affixed to each energy-isolating device by authorized employees. Lockout devices where used, must be affixed in a manner that will hold the energy isolating devices in a "safe" or "off" position. Where tagout devices are used, it must be affixed in a manner that will clearly indicate that the operation or movement of energy isolating devices from the "safe" or "off" position is prohibited. If the tag can not be affixed directly to the energy isolating device, the tag must be located as close as safely possible to the device, in a position that will be immediately obvious to anyone attempting to operate the device. (d)(4)(i)-(d)(4)(iii)(B)

• Stored energy: After the energy-isolating device has been locked out or tagged out, all potentially hazardous stored or residual energy must be relieved, disconnected, restrained, and otherwise rendered safe. (d)(5)(i)

• Verification of isolation: Before any work begins on machines or equipment that have been locked out or tagged out, an authorized employee must verify that the machine or equipment has been properly isolated and deenergized.
  (d)(6)

Overview Scope and Application Purpose Definitions Energy Control Program Energy Control Procedures    - Documentation Energy Control Procedures    - Required Content Periodic Inspection Employee Training and    Communication Additional Training (Tagout System)	Employee Retraining Lockout/Tagout New or Modified Equipment Full Employee Protection Materials and Hardware Application of Energy Control Release from Lockout/Tagout Testing of Machines Outside Personnel (Contractors) Group Lockout/Tagout    Requirements Shift & Personnel Changes

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