27 C.F.R. § 20.166 Stills and other equipment.
Title 27 - Alcohol, Tobacco Products and Firearms
If recovered denatured spirits or articles are to be restored on the permittee's premises, all equipment to be used in the restoration process shall be located on the permit premises. Distilling apparatus or other equipment, including pipelines, for restoration or for recovery, shall be constructed and secured in such a manner as to prevent unauthorized access to the denatured spirits and so arranged as to be readily inspected by appropriate TTB officers.
Title 27: Alcohol, Tobacco and Firearms
PART 20—DISTRIBUTION AND USE OF DENATURED ALCOHOL AND RUM
Subpart I—Operations by Dealers and Users of Specially Denatured Spirits
Premises and Equipment
§ 20.166 Stills and other equipment.