OSHA Noise Exposure Limits (2026 Guide)
OSHA's noise rule runs on two numbers: a 90 dBA permissible exposure limit and an 85 dBA action level that triggers the full hearing conservation program. This guide walks Table G-16's time limits, the OSHA-vs-NIOSH exchange-rate gap, real-world NRR derating, and a worked compliance example for a 92 dBA fabrication shop.