(a) No funds obtained through the sales of any bonds or notes of the state of Tennessee as provided for by this chapter shall be used to purchase or otherwise obtain any equipment, goods, or services, unless the equipment, goods, or services shall have a reasonably anticipated lifetime of use equal to or greater than the period of time for which the bonds or notes are issued and during which interest is payable for them. The “reasonably anticipated lifetime” within the meaning of this section shall be determined by the state building commission for projects under its jurisdiction and by other appropriate authority designated by the state funding board for all projects or programs not under the jurisdiction of the state building commission. Architectural, engineering, and other like services, which are determined by the state building commission or other appropriate authority designated by the state funding board to be a normal part of the project or program cost are not precluded by this section from funding from bond or note proceeds.

(b) For the purpose of ensuring that the bonds, notes and other obligations issued after September 1, 1986, pursuant to this chapter maintain their tax-exempt status as may be provided by the Internal Revenue Code of 1986 (26 U.S.C.), as amended, no state officer or employee or user of a project or program shall authorize or allow any change, amendment or modification to a project or program financed or refinanced with the proceeds of such obligations which change, amendment or modification would affect the tax-exempt status of such obligations unless the change, amendment, or modification shall have received the prior approval of the office of state and local finance in the office of the comptroller of the treasury and the state funding board. Failure to receive such approval shall render any change, amendment, or modification null and void.