Tenn. Code Ann. § 7-65-114

Proceeds of bonds other than refunding bonds issued by the authority may be used solely for the purpose of constructing, acquiring, reconstructing, improving, equipping, furnishing, bettering, or extending any project or projects, including the payment of interest on the bonds during construction of any such project and for six (6) months after the estimated date of completion, the payment of engineering, fiscal, architectural and legal expenses incurred in connection with such project and the issuance of the bonds, and the establishment of a reasonable reserve fund for the payment of principal of and interest on such bonds in the event of a deficiency in the revenues and receipts available for such payment.