Tennessee Code Title 7. Consolidated Governments and Local Governmental Functions and Entities § 7-35-405

(a) All necessary expenses actually incurred by the governing body of any city or town in the making of surveys, estimates of costs and revenues, employment of engineers or other employees, the giving of notices, taking of options and all other expenses of whatever nature, necessary to be paid prior to the issuance and delivery of the revenue bonds pursuant to this part, may be met and paid in the following manner:

(b) All such payments from the general or other funds shall be considered as temporary loans and shall be repaid immediately upon sale and delivery of the bonds, and claim for such repayment shall have priority over all other claims against the proceeds derived from the sale of the bonds.