The employer shall ensure that each employee who is exposed to the hazards of flames or electric arcs does not wear clothing that, when exposed to flames or electric arcs, could increase the extent of injury that would be sustained by the employee.

                       Note: Clothing made from the following types of fabrics, either alone or in blends, is prohibited by this paragraph, unless the employer can  demonstrate that the fabric has been treated to withstand the conditions that may be encountered or that the clothing is worn in such  a manner as to eliminate the hazard involved: acetate, nylon, polyester, rayon.