Different types of hazards are identified by Hazard Classes, while different levels of severity are identified with Categories. Hazard Classes are given clear names, such as "Flammable Liquid" or "Carcinogen." Within each Class, the Categories are numbered, with the most dangerous category called ...
OSHA is proposing to follow GHS Rev. 7 (UN GHS, 2017, Document ID 0060) by adding a new physical hazard class for desensitized explosives. There will be 4 categories (1,2,3, and 4) within this new hazard class. Desensitized explosives are chemicals that are treated in such a way to ...