29 CFR 1910.147
The OSHA standard for The Control of Hazardous Energy, Title 29 Code of Federal Regulations Part 1910.147, addresses the practices and procedures necessary to disable machinery or equipment, thereby preventing the release of hazardous energy while employees perform servicing and maintenance activities.
Chapter 21
chapter 21
Proper lockout tagout practices safeguard workers from the release of hazardous energy. Workers must be trained in the function of the energy control program and have the skills required for safe application usage and removal of the energy control devices.
hazards from the unexpected startup of machines or equipment or the unexpected release of hazardous energy while they are performing servicing or maintenance to machines and equipment.
Lockout procedures are discussed in Chapter 13 of AFOSH 91-501. This chapter provides guidelines and requirements for implementing lockout/tagout procedures to control hazardous energy sources and prevent unexpected startup of equipment during maintenance or servicing.
Chapter 6 of OPNAVINST 5100.23 Series provides guidance to protect workers against hazardous energy sources. This chapter outlines the requirements for implementing lockout/tagout procedures to ensure the safety of personnel during maintenance and servicing operations. It emphasizes the importance of identifying hazardous energy sources and establishing protocols to control them effectively.
Lockout/tagout procedures are commonly used to isolate hazardous energy sources within confined spaces. This involves physically securing energy isolation devices with locks and tags to prevent accidental re-energization of equipment. Additionally, proper training for workers on lockout/tagout procedures is essential to ensure safety during maintenance or repair work.
Lockout/tagout (LOTO) procedures are not typically required for routine cleaning or maintenance tasks that do not involve the unexpected release of hazardous energy. For instance, if equipment is simply being cleaned while it is powered off and there is no risk of accidental startup or energy release, LOTO may not be necessary. However, any activity that could potentially expose workers to hazardous energy sources, such as repairs or adjustments, would require LOTO. Always assess the specific circumstances to determine the need for LOTO.
an analysis of the hazardous energy types and energy magnitudes associated with the equipment, machinery or system and the means of isolation and control of these energy sources
every year (annually) and/or whenever there are changes in the USAF lockout/tagout energy-control procedures and/or inspections that reveal inadequacies in the worker's knowledge or use of energy-control procedures
verify that the hazardous energy has been controlled. Verify the mechanical integrity of the energy-isolation device and verify the de-energization of the machinery and equipment (zero-energy state). Perform required test, specific to the machinery and equipment, such as zero-voltage verification, to ensure that isolation has been achieved and that stored hazardous energy is relieved. A worker performing electrical verifications shall be a qualified energized electrical worker in accordance with AFI 32-1064. Restore all operating controls to the neutral or off position. If independent verification is required, that task must be completed at this point in the process