Tennessee Code Title 68. Health, Safety and Environmental Protection § 68-135-107

(a) The state fire marshal is authorized and directed to make such rules and regulations consistent with this part and other laws of this state as the state fire marshal may deem necessary in order to carry out the purposes of this part, including, but not limited to, minimum storage regulation and inspection of measuring devices and other reasonable regulations with respect to out-of-state dealers operating within the state. Included in such regulations may be the latest approved safety regulations issued by the National Fire Protection Association.

(b) The state fire marshal is further authorized to enter into reciprocity agreements with the proper officials of other states for the purpose of waiving regulations as to out-of-state dealers; provided, that the state in which such dealers have their places of business agree to waive the requirements of such state as to Tennessee dealers. Nothing in this subsection (b) shall be construed to exclude the right of the state fire marshal from entering into reciprocity agreements with the proper officials of other states relative to the minimum storage requirements and the extent to which, if any, same shall be required of the out-of-state dealers operating within this state.