Workers can suffer serious injury or death when servicing or maintaining electrical equipment—from the unexpected startup of the equipment to a release of stored energy.

It’s why OSHA is reminding employers of the dangers of hazardous energy and the need to protect workers from these potentially fatal releases.

Hazardous energy comes from electrical, mechanical, hydraulic, pneumatic, chemical, thermal, or other sources in machines and equipment.

Injuries from the failure to control hazardous energy during maintenance can include electrocution, burns, lacerations, amputations, and broken bones.


Some examples of hazardous energy include:

A steam valve automatically turns on, burning workers who are repairing a downstream pipe connectionA jammed conveyor suddenly releases, crushing a worker who is trying to clear the jamInternal wiring on factory equipment electrically shorts, shocking a workers who is

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