1926.55 - Gases, Vapors, Fumes, Dusts, and Mists

OSHA's construction safety standard 1926.55 sets requirements for controlling employee exposure to gases, vapors, fumes, dusts and mists on job sites. It mandates engineering controls such as ventilation, limits on hazardous concentrations, and the use of personal protective equipment when engineering measures are insufficient. The rule also outlines monitoring, training and medical surveillance obligations to protect workers' health.