Tag
Industrial Hygiene
3 OSHA and HazCom articles tagged "Industrial Hygiene" — practical, CFR-cited guidance verified against primary sources.
Frozen in 1971: The Data Behind OSHA's Outdated Exposure Limits
An original analysis of OSHA's permissible exposure limits — fewer than 500 chemicals have one, most carry a number a committee chose in 1968, and a 1989 attempt to modernize 376 of them was struck down in court. Why 'meeting the PEL' is the legal floor, not a safe ceiling.
The PFAS Paradox: Regulated in Water, Silent on the SDS
A data analysis of the regulatory asymmetry around 'forever chemicals' — the EPA now limits PFOA and PFOS to 4 parts per trillion in drinking water, yet OSHA has no workplace exposure limit for any of the thousands of PFAS. Why the safety data sheet is the worker's only systematic warning.
Workplace Chemical Exposure Limits: PELs, TLVs & RELs Explained
Understand OSHA PELs, ACGIH TLVs, and NIOSH RELs. Complete guide to workplace chemical exposure limits with lookup tables, monitoring requirements, and compliance strategies.