Lockout/tagout energy sources
When electrical systems are de-energized to perform maintenance work safely, precautions must be taken to insure that circuits are not accidentally turned back on while the work is going on.
Lockout/tagout is the preferred method of controlling energy sources to minimize hazards to personnel. The details are complex, Every company should have an official lockout/tagout procedure, which should always be followed when electrical circuits are de-energized during construction or maintenance work. For more information, refer to NFPA 70E, Annex G “Sample Lockout/Tagout Procedure.”
