Safety checklist — Welding / Cutting
Hot work, welding and oxy-cutting. Based on Québec's Construction Safety Code (CSTC) and CNESST standards.
Before work
12 items- ✓
PPE worn: welding helmet (proper shade), leather gloves, flame-resistant apron
- ✓
Fire precautions per CSTC 3.14.1 — site permit if the procedure requires itCritical
ℹ️ 3.14.1 requires fire precautions. A named “hot work permit” is not in the Code.
- ✓
Combustibles moved or protected before welding/cutting (CSTC 3.14.1)
ℹ️ 3.14.1 requires fire precautions — not an 11 m radius in the Code.
- ✓
Fire extinguisher within reach
ℹ️ Good practice. CSTC 3.14.1 does not write a 6 m radius.
- ✓
Ventilation or fume capture according to the process and the risk assessment
- ✓
Welding screens installed to protect adjacent workers
- ✓
Welding machine inspected: cables, ground, connections
- ✓
Fumes captured at source — extraction functional
- ✓
Respirator worn if ventilation insufficient (P100 filter min.)
- ✓
No welding on containers that held flammable materials
- ✓
Gas cylinders upright, secured and in shade
- ✓
Fire watch if the site procedure requires it (CSTC 3.14.1)
ℹ️ 3.14.1 requires fire precautions. A named fire watch is not a Code article.
After work
4 items- ✓
Fire watch rounds after hot workCritical
ℹ️ Good practice. CSTC 3.14.1 does not write a 60 min duration.
- ✓
Gas cylinders closed and protected (cap in place)
- ✓
Area inspected — no residual hot spots
- ✓
Hot work permit closed and signed
16 verification items — use this checklist on-site with the app
Use on-site — freePDF 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 — Mechanical & Electrical
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Risks and prevention — Welding and cutting
Welding and oxy-cutting generate UV/IR radiation, toxic metal fumes, hot spatter, and major fire risk. RSST Annex I sets OELs for some welding metals. On site, CSTC 3.14.1 covers fire precautions — not a named ventilation duty.
CSTC 3.14.1 requires fire precautions near combustibles — not a named “hot-work permit” in the Code. Compressed gas cylinders stand vertically, protected from impact, fuel separated from oxidizers.
Eye protection suited to the process (filter shade per intensity) follows LSST 51 and the risk. The CSTC does not write a “mandatory shade”. Leather or flame-resistant clothing protects against spatter and radiation.
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