Inspections
safety
Confined Space Pre-Entry Permit
OSHA 1910.146 pre-entry permit — atmospheric testing, isolation, ventilation, communication, and rescue verification.
Built for:
Manufacturing
Utilities
Construction
Wastewater
Petrochemical
What's inside this template
Atmospheric Testing (Pre-Entry)
- Oxygen 19.5–23.5% measured at top, middle, and bottom of space
- LEL <10%
- CO <25 ppm
- H₂S <10 ppm
- Gas monitor calibrated and bump-tested today
Isolation & Lockout
- All energy sources locked out and tagged (mechanical, electrical, chemical, thermal)
- Inlet/outlet lines blanked, blinded, or double-block-and-bleed
- No introduction of contaminants from adjacent operations
Ventilation
- Continuous mechanical ventilation in place when needed
- Ventilation air drawn from clean source (not near vehicle exhaust)
- Continuous atmospheric monitoring during entry
Authorization & Communication
- Entry supervisor signed permit
- Entrants and attendant trained and identified on permit
- Two-way communication tested between entrant and attendant
- Permit posted at entry point with start time
Rescue Readiness
- Retrieval system rigged (full-body harness + retrieval line)
- Rescue team identified and on-site or on standby (≤4 min response)
- Rescue equipment staged: SCBA, tripod/hoist, first-aid
- Means to summon emergency services accessible
Common use cases
Permit-required confined space entry
OSHA 1910.146 compliance
Tank, vessel, sewer, or vault work
Frequently asked questions
Does this replace a written permit?
It captures the data the permit requires but most jurisdictions also expect a printed/signed permit document. Print this checklist as the back-up record after entry.
Who can be the attendant?
A trained authorized employee, separate from any entrant. The attendant must remain outside, maintain communication, and never enter to attempt rescue unless they are part of a designated rescue team and properly equipped.
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