Tenn. Code Ann. § 68-122-207: Local laws not affected.

This part shall not have the effect of replacing any municipal law or ordinance that regulates and licenses the repairing or erection of steam boilers, steam kettles, pressure tanks or steam generators, and nothing in this part shall be construed as preventing the local officials or board of such municipalities from the exclusive right to regulate or enforce all such local laws or regulations now in force, and no provision of this part shall be construed as permitting the repair or erection of boilers without first complying with the requirements of the local laws and ordinances provided for such repair or erection of boilers.