Section 68-122-104 - Existing boilers required to conform - Applicability(a) All boilers that were in use, or installed ready for use in this state prior to the date upon which the first rules and regulations became effective, or during the twelve-month period immediately thereafter, shall be made to conform to the rules and regulations of the board governing existing installations, and the formulae prescribed therein shall be used in determining the maximum allowable working pressure for such boilers.(b) This part shall not be construed as in any way preventing the use or sale of boilers as referred to in subsection (a); provided, that they have been made to conform to the rules and regulations of the board governing existing installations; and provided further, that they have not been found upon inspection to be in an unsafe condition.(c)(1) This part shall apply to historic power boilers. "Historic power boilers" means any steam traction engine, portable, or stationary, standard or nonstandard power boiler, including free-lance and scale models, owned by publicly operated museums, nonprofit organizations and individuals who preserve, maintain, exhibit and only occasionally operate these boilers on a not-for-profit basis and for the primary purpose of perpetuating the agricultural and pioneer heritage of Tennessee.(2) Such boilers shall conform to the rules and regulations adopted by the board of boiler rules.Acts 1949, ch. 246, § 4; C. Supp. 1950, § 5347.3 (Williams, § 5371.7); T.C.A. (orig. ed.), § 53-2704; T.C.A., § 68-20-104; Acts 1994, ch. 584, § 1.