what is the low pel for oxygen in confined space entry
Generated on: May 15, 2025
An oxygen deficient atmosphere in a confined space is defined as containing less than 19.5 percent oxygen by volume [1]. However, some regulations allow entry into a confined space with less than 19.5% oxygen by volume if certain hazard control measures are in place [2].
It is also important to note that an atmosphere containing more than 23.5 percent oxygen by volume is considered an oxygen enriched atmosphere [1] which can also be hazardous [3].
Important Safety Note:
Always verify safety information with your organization's specific guidelines and local regulations.
References
Page links are approximate[3]↑
Rules for the Administration of the Oregon Safe Employment Act (General Occupational Safety and Health, Division 2, OSHA Oregon)
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