Scout's Toolbox Talks

Before anyone enters a confined space, you must test the air — even if it “smells fine” or was recently entered. Invisible hazards like low oxygen, toxic gases, or flammable vapors can build up fast and kill without warning.

Why It Matters:

Oxygen-deficient or toxic environments are silent killers. One breath can knock a worker unconscious or worse. OSHA requires atmospheric testing before entry and continuously if conditions may change.

Key Points:

• Test for oxygen, flammables, and toxic gases — in that order.
• Use calibrated gas monitors with recent bump tests.
• Test at top, middle, and bottom of the space — gases settle at different levels.
• Never rely on your senses. Use instruments.
• Record and verify readings before entry and during occupancy.

✅ No reading = no entry.

Ask the Crew:

• Are we testing every confined space before entry?
• Who’s responsible for checking and documenting the air monitor readings?

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