Confined Space Ventilation Setup Safety
A safety talk focused on setting up ventilation correctly to move fresh air through the space effectively.
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Key Hazards
- Ventilating the opening but not the full space
- Pulling exhaust or contaminated air into the intake
- Poor duct placement leaving dead zones
2–3 Minute Talk Script
Confined space ventilation setup safety matters because improper setup can create a false sense of safety. Ventilation must move fresh air through the entire space, not just near the opening.
The intake must be positioned in clean air, away from vehicles, generators, or chemical sources. Duct placement should push or pull air through the work area where entrants will be breathing.
Some spaces require time to purge before entry. Ventilation must continue during the entire entry when required.
If air readings do not improve, stop and reassess. The space may have an active source of gas or inadequate airflow.
Safety Reminders
- Place the intake in clean air away from exhaust sources.
- Position ducting to ventilate the full space, not just the opening.
- Allow purge time if required, and continue ventilation during entry.
- Reassess if readings do not improve.
Ask the Crew
- Is our intake drawing clean air?
- Does airflow reach where entrants will be working?