Safety checklist — Confined space
Entry and work in confined spaces. Compliant with Québec's Construction Safety Code (CSTC) and CNESST standards.
Before entry
13 items- ✓
PPE worn: rescue harness, respirator if required, hard hat, gas detector
- ✓
Confined space entry permit completed and signed
- ✓
Atmosphere tested: O₂ ≥ 19.5%, explosivity < 10% LEL, contaminants < OELCritical
ℹ️ Minimum RSST values: O₂ ≥ 19.5%, LEL < 10%
- ✓
Mechanical ventilation installed and functional
- ✓
Energy source lockout completed (RSST)
- ✓
Attendant posted at entrance — continuous communication with insideCritical
ℹ️ Attendant must never leave post or enter the space
- ✓
Rescue plan documented — rescue equipment at hand
- ✓
Workers qualified (≥ 18 years, RSST section XXVI trained)
- ✓
Portable gas detector running continuously
- ✓
Ventilation maintained throughout work
- ✓
Regular communication with attendant (every 5 min minimum)
- ✓
Immediate evacuation if gas detector alarmCritical
ℹ️ Immediate evacuation — never attempt solo rescue
- ✓
No ignition source if explosive atmosphere possible
After work / Exit
5 items- ✓
All personnel out — headcount confirmed
- ✓
Tools and materials removed from confined space
- ✓
Access sealed or barricaded to prevent unauthorized entry
- ✓
Entry permit closed and archived
- ✓
Lockout removed per procedure
More checklists — Cross-cutting Situations
Road work / Signage
Roadside work and construction site signage
15 checks
Cold weather work
Prevention of frostbite and hypothermia on site
15 checks
Asbestos / Decontamination
Asbestos removal and decontamination work
19 checks
Work at height
Fall protection, harness and lifeline
17 checks
Hot weather work
Prevention of heat stroke on site
14 checks
Manual handling
Lifting and carrying loads by hand
13 checks