Tenn. Code § 68-121-105
Within sixty (60) days after the date of adoption by the board of rules and regulations under § 68-121-103, the owner or lessee of every existing elevator, dumbwaiter and escalator shall register with the department each elevator, dumbwaiter or escalator owned or operated by such owner or lessee, giving type, contract load and speed, name of manufacturer, its location and the purpose for which it is used and such other information as the department may require. The registration shall be made on a form to be furnished by the department on request. Elevators, dumbwaiters and escalators whose erection is begun subsequent to the date of adoption, but prior to the effective date of the rules and regulations adopted under § 68-121-103, shall be registered with the department within not more than seven (7) days after they are completed and placed in service.
T.C.A. § 68-121-105