['Confined Spaces']
['Permit-Required Confined Spaces']
02/04/2026
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A permit-required confined space is a confined space (as defined) that has one or more of the following characteristics:
- Contains or has a potential to contain a hazardous atmosphere, or
- Contains a material that has the potential for engulfing an entrant, or
- Has an internal configuration that could trap or asphyxiate an entrant by inwardly converging walls or a floor which slopes downward and tapers to a small cross section, or
- Contains any other recognized serious safety or health hazard. Such as moving equipment and exposed electrical lines.
If a space meets the definition of permit-required confined space, then the requirements of 1910.146 apply.
['Confined Spaces']
['Permit-Required Confined Spaces']
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