The Chief has the authority to require that periodic inspections and tests be made to determine whether the items listed in Sections 57.108.7 and 57.108.7.1, including any water supply, are operational. All such inspections and tests shall be made at intervals to be determined by the Chief. Tests at shorter intervals may be required when an inspection by the Chief indicates there is a substantial reason to believe that the system or device would fail to operate properly in an emergency. The inspections and tests shall be made in accordance with the rules and regulations established by the Board.