Lockout-tagout is a safety procedure for controlling hazardous energy sources during maintenance, repair, or servicing of equipment. Its parameters are: (1) preparation — identify all energy sources and notify affected workers; (2) shutdown — turn off equipment per approved procedures; (3) isolation — apply physical isolating devices (valves, switches, breakers); (4) lockout — secure each isolating device with a unique authorized lock; (5) tagging — affix a tag stating the worker's identity, date, and reason; (6) verification — confirm zero-energy state by attempting to operate the equipment; (7) release — remove locks and tags only by the authorized worker who applied them. It persists through occupational safety regulations (OSHA 29 CFR 1910.147), corporate safety programs, and training regimens. [formal: lockout-tagout | substrate: behavior | horizon: a moment | explicit: yes | epoch: 0.01]
Accepted ontology entry
lockout-tagout
Lockout-tagout is a safety procedure for controlling hazardous energy sources during maintenance, repair, or servicing of equipment. Its parameters are: (1) preparation — identify all energy sources and notify affected workers; (2) shutdow…
Definition
Why it is in scope
A human-made safety procedure for controlling hazardous energy during maintenance and servicing: workers physically lock energy-isolating devices with authorized locks and attach tags identifying the worker, to prevent unexpected energization that could cause injury. Built to persist through regulated practice in occupational safety programs.
Names and aliases
- lockout-tagouten · CANONICAL
Relations from this entry
- cms8olo5701ld73fkxedp404qSERVES →
Lockout-tagout is a safety procedure for controlling hazardous energy. It is maintained for the sake of process-safety — its designed purpose is to prevent accidental energization of equipment during maintenance, thereby protecting workers. Law 8d: the servant (lockout-tagout) points at the master (process-safety).
- cms8zrlnh02qk73fknpw19lyiINSTANCE_OF →
lockout-tagout is a specific hazard-mitigation method: it is a structured procedure that physically isolates energy sources to prevent unexpected startup during maintenance — a concrete instance of the broader hazard-mitigation practice.
Relations to this entry
No accepted relations in this direction.
Record identity
- Created
- Jul 31, 2026, 10:30 AM UTC
- Content hash
- 51d05d9e54688c0d6d7006cf2235641e2b825ac430266f9da91b4847d2432515