UNI EN 17975:2025 — a practical guide to Lockout/Tagout in maintenance
What UNI EN 17975:2025 requires for LOTO: isolation processes, Try-Out, roles, traceability and a practical maintenance checklist.
Resource cluster
LOTO safety guides
Lockout/Tagout, UNI EN 17975:2025 and control of hazardous energy in maintenance.
A practical path through LOTO safety
Lockout/Tagout is the process used to isolate energy and fluids before maintenance, apply lockout devices and tags, and prevent unexpected reactivation. UNI EN 17975:2025 provides a shared European framework: it defines isolation processes, formal roles, traceability and the Try-Out used to verify that isolation is effective before work begins.
Start with the pillar guide to understand the standard and the complete sequence. The supporting guides then examine recurring maintenance accident dynamics, choosing an isolation process, parent/child lockout on complex plants, and the difference between paper and digital records in a GMP audit. Together they separate the safety of physical isolation from the quality and traceability of the evidence supporting it.
This section has an informational purpose. Where a plant needs to turn those requirements into a controlled operating process, the SmartLOTO page presents Eurosystem's application: selective padlock release and a digital audit trail designed around UNI EN 17975:2025.
Pillar 8 min Lockout/Tagout solutions supplier in Italy: how to choose
What a complete LOTO solution really includes and how to choose a supplier for a pharmaceutical GMP context: regulatory competence, alignment with UNI EN 17975:2025 and ALCOA+ traceability.
8 min LOTO management software: what it must do and its GMP requirements
What a LOTO management software does: isolation-point register, parent/child sequences, selective release, non-disableable audit trail and GMP requirements (Annex 11, 21 CFR Part 11, GAMP5).
7 min Maintenance accidents: what the INAIL data say and the recurring dynamics
Official INAIL data and recurring maintenance-accident dynamics: unexpected start-up, residual energy and isolation errors.
7 min Paper or digital LOTO: what changes for a GMP audit
Paper and digital records can both support LOTO. The comparison concerns traceability, contemporaneous records, audit trails and GxP system requirements.
7 min Parent/child lockout: how to manage hierarchical isolations on complex plants
On real plants with dozens of isolation points, LOTO becomes a question of hierarchy. How to manage parent/child dependencies according to UNI EN 17975:2025.
6 min Reinforced isolation, standard or neutralization: how to choose the LOTO process
UNI EN 17975:2025 defines four isolation processes. Practical criteria for deciding when to apply RI, SI, N or SP and how to document the choice.
Questions on this topic?
Talk it through with a team that knows compliance from the inside.