Safety checklist — Lockout / tagout
Energy control before work on a machine — CSTC 2.20. Written from Québec's Construction Safety Code (CSTC) and the RSST.
17 items to check on-site, with photos and a PDF report
Open this checklist in the app — freeBefore work
12 items- ✓
Written lockout procedure accessible and intelligible on site (CSTC 2.20.5–2.20.6)Critical
ℹ️ The principal contractor ensures one or more procedures describe the method for each machine.
- ✓
All energy sources identified (electrical, hydraulic, pneumatic, gravity, spring, thermal)
- ✓
Affected personnel notified before isolation
- ✓
Unique-key padlocks, name shown or a register (CSTC 2.20.1 and 2.20.11)Critical
ℹ️ A shared lock does not replace unique keying. CSTC 2.20.3: each person with access to the zone lock out.
- ✓
Workers trained on the procedure for the machine in question
- ✓
Hasps / multi-lock devices ready if several trades intervene
- ✓
Equipment stopped using the normal procedure
- ✓
Each source isolated at the intended cut-off point
- ✓
Each person with access to the zone has applied their padlock (CSTC 2.20.3)Critical
- ✓
Residual energy eliminated or controlled (CSTC 2.20.7)Critical
ℹ️ Bleed, block, discharge. Killing the motor is not 2.20 by itself.
- ✓
Absence of energy verified before entering the danger zoneCritical
ℹ️ 2.20.7: verify lockout. A multimeter is not named in the Code; use a device suited to the source.
- ✓
No padlock removed while its owner is in the zone
After work
5 items- ✓
Danger zone clear — tools and people off the machine
- ✓
Unlock per procedure, by the padlock owner
- ✓
Absent person's lock: only under CSTC 2.20.12 — not an improvised bolt cutterCritical
ℹ️ This is not a verbal go-ahead from the foreman.
- ✓
Machine tested with people clear before returning to service
- ✓
Procedure and register filed; anomalies reported to the SST lead
17 verification items — use this checklist on-site with the app
PDF reports, history and team management in the app
For information only — this is not legal advice. OK Sécurité is an independent company with no affiliation to the CNESST: we are not mandated, endorsed or certified by it. Completing a checklist here does not by itself establish your compliance — your exact obligations depend on your job site and your prevention program. Where there is any discrepancy, the official text published by Légis Québec or the CNESST prevails.
More checklists — Cross-cutting Situations
More safety checklists
Related official rule (French)
Related guides
Risks and prevention — Lockout / tagout
On a construction site, CSTC 2.20 requires lockout — or an equivalent method — before any work in a machine's danger zone (assembly, inspection, maintenance, unjamming). It is not only a padlock on a breaker. RSST 188 applies to establishments.
Each person with access to the zone applies a unique-key padlock (2.20.3). The procedure is written, accessible and intelligible (2.20.5 and 2.20.6). Before entry: stop, isolate, control residual energy, verify. Removing an absent person's lock follows 2.20.12 — not an improvised bolt cutter.
The lockout checklist turns those steps into field points. It does not replace your company procedure or the Code. The how-to guide explains the method; the regulation sheet cites the articles.
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