Ill. Admin. Code tit. 41, § 255.20
Unless the context requires otherwise, the following terms have the meanings ascribed in this Section:
"Act" means the Sprayed Fire-Resistant Material Applicator Act [425 ILCS 75].
"Office" means the Office of the State Fire Marshal.
"Sprayed fire-resistant material" or "SFRM" means a cementitious or fibrous material that is applied onto a steel structure through a spray process to provide fire-resistant protection to the steel structure.
"Sprayed fire-resistant material applicator" means an individual in the business of applying sprayed fire-resistant material. [425 ILCS 75/5]