9 C.F.R. § 354.210
Minimum standards for sanitation, facilities, and operating procedures in official plants
The provisions of §§ 354.210 to 354.247 shall apply with respect to inspection service in all official plants. The table set forth in § 354.247 indicates some of the types of material which may be used in the construction of equipment, utensils, and facilities for use in the plant.