Confined Space Air Monitoring Limits
O2, LEL, CO, and H2S atmospheric alarm criteria.
OSHA 1910.146 reference limits
- Oxygen19.5 – 23.5 %
- Flammability (LEL)0 – 10 %LEL
- Carbon monoxide0 – 25 ppm
- Hydrogen sulfide0 – 10 ppm
About this tool
Pull up OSHA 1910.146 reference numbers and four-gas alarm setpoints for any confined-space entry. Built for safety pros and r/OSHA recurring monitoring questions.
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