29 CFR 1910.146 / 1926 Subpart AA
Permit-Required Confined Spaces
What Permit-Required Confined Spaces requires
You must identify and evaluate confined spaces, and where permit spaces exist, run a written permit program with atmospheric testing, attendants, entry supervisors, and rescue arrangements.
Who must be trained: Employees exposed to this hazard, before the exposure begins.
What must be on file: Written permit space program, Space inventory and signage, Completed entry permits.
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- Entrant, attendant, and entry supervisor duties
- Atmospheric testing and ventilation
- Non-entry rescue
Documents you need
- Written permit space program
- Space inventory and signage
- Completed entry permits
What we track
- Employee name and role
- Course completed and date
- Score and pass/fail
- Certificate on file
- Retraining due date
The inspection moment
"Show me your last completed confined space entry permit."
In Dsyfer that's one click: every employee, every date, every certificate, with the next retraining date already scheduled.
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29 CFR 1910.146 — Permit-required confined spaces on osha.gov
This page was last reviewed on September 4, 2026. Educational summary only. Consult the full text of the standard and any applicable state plan for the authoritative requirements. Not legal advice.