Lockout devices hazardous energy

Specific requirements for testing a machine, equipment, pipelines, or other sources of hazardous energy to determine and verify the effectiveness of lockout devices, tagout devices, and other energy control measures... 

Lockout Devices in Construction (Minnesota Rules 5207.0600). MNOSHA has adopted its own lockout/tagout standard for the construction industry. This standard is in addition to 29 CFR 1926.417, Lockout and Tagging of Circuits, and the portions of 29 CFR 1926 Subpart O, Motor Vehicles, Mechanized Equipment and Marine Operations, which address the control of potential energy. Employers in general industry must comply with 29 CFR 1910.147, Control of Hazardous Energy. 

This procedure establishes the minimum requirements for the lockout of energy isolating devices whenever maintenance or servicing is done on machines or equipment. It shall be used to ensure that the machine or equipment is stopped, isolated from all potentially hazardous energy sources and locked out before employees perform any servicing or maintenance where the unexpected energization or start-up of the machine or equipment or release of stored energy could cause injury. 

The documented procedures for the control of hazardous energy must identify the t5q>es of energy to be controlled (by magnitude or by type) and must outline the procedures for shutdown, equipment isolation, lockout/tagout device application, release of stored energy, and verification of isolation. 

The device needs to meet the above definition of an energy isolating device to satisfy the standard s requirements. If an employer determines that the device does not meet the definition, then the energy supply needs to be tracked back to a disconnect switch or circuit breaker which does meet the definition. An November 10, 1999 Letter of Interpretation notes that the extent of the lockout procedures would depend on the employees activities and their exposure to the hazards. If the maintenance/repair activities will not expose employees to a certain hazard from a part of the equipment, that portion of the equipment would not need to be deenergized. The letter includes the following ... 

---