The purpose of this program is to prevent inadvertent operation or energization of machines, equipment or processes in order to protect employees and establish methods for achieving zero energy state. This program applies to activities such as: erecting, installing, constructing, repairing, adjusting, inspecting, cleaning, operating or maintaining the equipment and processes. This program applies to energy sources such as: electrical, mechanical, hydraulic, pneumatic, chemical, radiation, thermal, compressed air, energy stored in springs, and potential energy from suspended parts (gravity).
This standard does not apply to hot tap operations involving transmission and distribution systems for substances such as gas, steam, water, or petroleum products when such operations are performed on pressurized pipelines, provided the user demonstrates that (1) continuity of service is essential, (2) shutdown of the system is impractical, and (3) documented procedures are followed, and special equipment is used which will provide proven effective protection for employees.
Governing Regulations and Entities
- Occupational Safety and Health Administration (OSHA) 29 CFR 1910.147, The control of hazardous energy (lockout/tagout)
- Lockout/Tagout and Alternative Methods, ANSI/ASSE Z244.1-2003
Lockout Control Procedure Template