Toolbox Talk: Confined Space Safety

Why it matters

Confined spaces can hold toxic gas, too little oxygen or sudden hazards. Many deaths are would-be rescuers who rushed in after a coworker.

Talking points

• Know the space: a confined space is large enough to enter, has limited ways in or out and isn't made for people to stay in. Tanks, vaults, manholes and silos are common.
• Permit first: permit-required spaces need a written permit, trained entrants, an attendant and an entry supervisor.
• Test the air: check oxygen, flammable gases and toxic gases before entry and keep testing while people work.
• Ventilate and isolate: use fans to bring in fresh air, and lock out equipment, pipes and power lines that could hurt people inside.
• Attendant and communication: the attendant stays outside, keeps track of everyone inside and calls for help.
• Never enter to rescue: call for the trained rescue team. Use retrieval lines from outside. Stay out unless you're trained and equipped.

Ask the crew

1. Is anyone planning to enter a tank, vault, pit or manhole today?
2. Who is the attendant, and how do we call for rescue?
3. What are the possible gases in this space?

Before we start work today: Confirm the permit, the air test results and the rescue plan before anyone enters.

Who attended

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Source: OSHA 1910.146: Permit-required confined spaces. General safety information only, not legal advice; follow your employer’s program, the manufacturer’s instructions and current regulations. Keep signed sheets with your safety records. FirstDayTraining.com · Todd Allyn Media Inc.