Skip Navigation
Oklahoma State University


Lockout/Tagout refers to the control of hazardous energy. These hazardous energy sources can include electrical, mechanical, hydraulic, pneumatic, chemical, thermal or other sources of energy in equipment that could potentially be hazardous to workers. The unexpected energization of equipment can result in serious or fatal accidents during servicing or maintenance activities.

Unnecessary injuries can be prevented by controlling these energy sources and ensuring personnel are trained to understand the purpose and scope of the lockout/tagout program.

Departments should also assess the need for a lockout/tagout program and utilize EHS’s Lockout/Tagout Manual for references regarding appropriate procedures, university policy and requirements that must be met when performing lockout/tagout activities.

If you have any questions or concerns regarding lockout/tagout, please contact EHS at 744-7241 or at Email:


Useful Links:

OSHA: Control of Hazardous Energy

OSHA: LOTO Fact Sheet  

EHS:  LOTO Manual

EHS: LOTO Fact Sheet