Lockout/Tagout (LOTO)
Lockout/tagout is a safety procedure that isolates and locks energy sources — electrical, steam, hydraulic, pneumatic — before maintenance, so equipment cannot start unexpectedly. It protects workers from hazardous energy release and is a legal requirement in most jurisdictions.
LOTO ensures machinery is fully de-energised and cannot be re-energised while someone is working on it, using physical locks and warning tags. It is central to maintenance safety on hot, pressurised and powered equipment. Faster, safer access — including removable insulation that does not need cutting off — supports efficient LOTO-governed maintenance.
Related terms
MTTR (Mean Time To Repair) · Condition Monitoring