Safety checklist — Commercial diver
Underwater work, cofferdams and subaquatic inspections. Compliant with Québec's Construction Safety Code (CSTC) and CNESST standards.
Before work
11 items- ✓
Diver certified in commercial diving (CSA Z275.2 standard)Critical
ℹ️ Commercial diving = specific certification required — no recreational diving
- ✓
Dive plan established — depth, duration, tasks, decompression stops
- ✓
Diving equipment inspected — air supply, suit, communication
- ✓
Standby diver ready on site with full equipmentCritical
ℹ️ CSA Z275.2 — standby diver mandatory, ready to intervene at all times
- ✓
Hyperbaric chamber accessible if depth > 12 m
ℹ️ Mandatory if risk of decompression sickness
- ✓
Current and visibility assessed — conditions acceptable for dive
- ✓
Diver-to-surface communication tested and functional
- ✓
Continuous monitoring of diver from surface
- ✓
Dive time and depth monitored — decompression tables followed
- ✓
No lifting or blasting operations during dive
- ✓
River traffic prohibited within dive perimeter
After work
4 items- ✓
Decompression stops fully respected
- ✓
Diver monitored for min. 1 hour after surfacing
- ✓
Equipment rinsed, inspected and stored
- ✓
Dive report completed (depth, duration, work performed)
More checklists — Equipment & Hoisting
More safety checklists
Risks and prevention — Commercial diver
Commercial diving in construction is among the most hazardous activities: drowning, hypothermia, gas embolism, and zero-visibility conditions. The CSTC and CSA Z275.2 standards govern diving operations. A dive plan and surface communication system are mandatory.
The dive team must include at minimum a standby diver, a surface tender, and a qualified diving supervisor. Work near water intakes or structures creating pressure differentials (cofferdams, gates) requires additional precautions against entrapment.
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