ANSI/ASSP Z390.1:2024

This standard sets forth accepted practices for hydrogen sulfide (H2S) safety training and instruction of affected personnel to include, but not be limited to, the following: • minimum informational content of the course; • recommended exercises and drills; • properties and characteristics of H2S; • sources of H2S and areas of potential exposure; • typical site-specific safe work practices associated with H2S operations; • detection methods for H2S; • engineering/mitigation controls; • properties, characteristics, and safe work practices of sulfur dioxide (SO2); • selection, use, and care of personal protective equipment (PPE) appropriate for atmospheres containing H2S concentrations above the applicable occupational exposure limit (OEL), rescue procedures and first aid for victims of H2S exposure; and • H2S safety instructor qualifications.