Scout's Toolbox Talks

Air in a confined space can change fast. What was safe five minutes ago might now be toxic or oxygen-deficient.

Why It Matters:

Many confined space fatalities happen after work has already started — not during initial entry. Welding, fuel-powered tools, chemical reactions, or even rust can change air quality rapidly. Continuous monitoring ensures you’re not caught off guard.

Key Points:

• Use a calibrated, multi-gas meter capable of detecting:
  • Oxygen levels (should be 19.5–23.5%)
  • Flammable gases (below 10% LEL)
  • Toxic gases like CO and H₂S
• Place sensors at the right height — gases settle differently (e.g., CO rises, H₂S sinks).
• Assign someone to watch the monitor at all times.
• Alarms mean exit immediately — never ignore alerts.
• Monitor during breaks, tool changes, or re-entry.

✅ Continuous air monitoring = real-time safety.

Ask the Crew:

• Is our monitor on and working?
• Who’s responsible for watching the readings?

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