Safety checklist — Welding / Cutting
Hot work, welding and oxy-cutting. Compliant with Québec's Construction Safety Code (CSTC) and CNESST standards.
Before work
12 items- ✓
PPE worn: welding helmet (proper shade), leather gloves, flame-resistant apron
- ✓
Hot work permit obtained and postedCritical
ℹ️ Hot work permit must be obtained BEFORE starting
- ✓
Combustibles removed or protected within 11 m radius
- ✓
Fire extinguisher within reach (6 m max)
- ✓
Local exhaust ventilation in place (RSST requirement)
- ✓
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 present if required by permit
After work
4 items- ✓
Fire watch rounds: 60 min minimum after work endsCritical
ℹ️ 60 min minimum — extend if combustible materials nearby
- ✓
Gas cylinders closed and protected (cap in place)
- ✓
Area inspected — no residual hot spots
- ✓
Hot work permit closed and signed
More checklists — Mechanical & Electrical
More safety checklists
Related guides
Risks and prevention — Welding and cutting
Welding and oxy-cutting generate UV/IR radiation, toxic metal fumes, hot spatter, and major fire risk. RSST sets exposure limits for welding fumes (manganese, hexavalent chromium, zinc) and requires local ventilation or a filtering respirator.
A hot-work permit is generally required on construction sites. The fire watch must be present during work and for at least 60 minutes after. Compressed gas cylinders must be secured vertically, protected from impact, and stored separately (fuel vs oxidizer).
Eye protection suited to the welding process (filter shade per intensity) is mandatory. Leather or flame-resistant clothing protects against spatter and radiation.
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