The atmosphere of the confined space shall be tested to be certain that: the oxygen level is at least 19.5%, but not greater than 23.5%, there is a hydrogen sulfide level of less than 10 parts per ...

Confined spaces are found in nearly every work environment. These spaces can expose workers to hazards related to oxygen deficiency, and toxic or combustible atmospheres. The updated ANSI/ASSP ...

Monitoring workplace safety in environments where hazardous gases may be present is of crucial importance, especially in ...