9 CFR § 314.2
Tanking and other facilities for inedible products to be separate from edible product facilities
November 6, 2020
All tanks and equipment used for rendering, otherwise preparing, or storing inedible products must be in rooms or compartments separate from those used for preparing or storing edible products. There may be a connection between rooms or compartments containing inedible products and those containing edible products as long as it does not cause the adulteration of edible product or create insanitary conditions.
[64 FR 56416, Oct. 20, 1999]