Testing is required on all lines and shall be done in the presence of the Director of Public Utilities or his or her representative. A minimum of 48 hours' notice shall be given to the Director of Public Utilities before testing begins unless other schedules can be arranged. All testing and disinfection shall be completed prior to connection to any existing line.
(A) Water line testing; hydrostatic and leakage tests. On completion of the line or sections of the lines, connections and appurtenances, the line shall be filled and hydrostatically tested. The water for this purpose can be taken from existing lines under the supervision of the Public Utilities Department; the pressure shall be increased to either 150 psi or 200 psi at the lowest point in the section being tested as specified by the Director of Public Utilities. Testing shall be for a minimum of four hours to a maximum of 24 hours. The water added during the testing will be metered. All leaks and any defective material shall be repaired or replaced to the satisfaction of the Director of Public Utilities and the tests repeated until the requirements of this specification are met. Leakage will be allowed on the basis of the formula set forth in AWWA Specification C-600.
(B) Field testing valves. In addition to manufacturer testing and certification, field tests of all valves as directed by AWWA Specifications C-500 and C-504 as applicable.
(1) During the last stages of the test and without any reduction in pressure, first the hydrant valves will be closed, then progressing in an orderly manner from the end opposite from the test pump each main line valve will be closed and pressure released to determine if it is holding pressure (minimum 30 minutes).
(2) Unless otherwise directed by the Director of Public Utilities, all butterfly valves will be tested to 150 psi for a minimum of 30 minutes (each) after the pipeline has been successfully tested.
(Ord. passed 6-21-2011)