SmartQHSE/confined-space-atmospheric-action-levels-2026

Canonical landing page: https://www.smartqhse.com/datasets/confined-space-atmospheric-action-levels-2026 Confined Space Atmospheric Action Levels 2026 — Multi-Jurisdiction Confined space atmospheric monitoring thresholds across OSHA 1910.146 (US), HSE UK (INDG258 / EH40 WELs / SCR97), and IOGP Report 415. ~13 parameters: O2 (19.5-23.5%), LEL (<10% acceptable), H2S (IDLH 100 ppm), CO (PEL 50 ppm OSHA), SO2, NO2, NH3, methane, chlorine, HCN, benzene, temperature, noise. Per… See the full description on the dataset page: https://huggingface.co/datasets/SmartQHSE/confined-space-atmospheric-action-levels-2026.