Qualified safety and health specialists shall perform inspections for high-risk workplaces and projects.

The following is an excerpt from 29 CFR 1960.2, Definitions:

1960.2(s) The term Safety and Health Specialist means a person or persons meeting the Office of Personnel Management standards for such occupations, which include but are not limited to: 

Safety and Occupational Health Manager/Specialist GS-018, Safety Engineer GS-803, Fire prevention Engineer, GS-804, Industrial Hygienist GS-690, Fire protection and Prevention Specialist/Marshal GS-081, Health Physicist GS-1306, Occupational Medicine Physician GS-602, Occupational Health Nurse GS-610, Safety Technician GS-019, Physical Science Technician GS-1311, Environmental Health Technician GS-699, Air Safety Specialist GS-1825, Chemist GS-1320, Health Technician GS-645, Highway Safety Manager GS-2125 or equally qualified military, agency, or non-government personnel. The agency head shall be responsible for determination and certification of equally qualified personnel.