Tagging out means fixing a signed danger or do-not-operate tag, usually with a personal lock, at each isolation point listed in the switching order. The tag names the holder and the job and can only come off through that person or a formal removal procedure. Lockout-tagout is the general industrial name for the same discipline.
Heard on the job
Tag out both LV incomers and the generator changeover, then I'll prove dead and you can start.
Also heard as
- LOTO
- lock out tag out
- hang tags
Related terms
Permit to work
Formal written authority to work on equipment that has been isolated, earthed and declared safe.
Rack out
To wind a withdrawable breaker out of its connected position in metal-clad switchgear to isolate it.
Switching order
Written step-by-step sequence of operations used to isolate or restore equipment safely.