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SECTION 02519 <br /> TESTING AND DISINFECTING WATER SYSTEM <br /> PART I - DISINFECTING POTABLE WATER PIPELINES <br /> 1 . 01 The new water system shall remain disconnected from existing water lines except for the temporary <br /> jumper connection. All water used to fill and test the new water system shall be obtained through the <br /> temporary jumper connection. Flushing shall be accomplished through the new connection only under <br /> direction by the Utility Authority and only after installation of upstream and downstream pressure <br /> gauges. <br /> 1 . 02 Before pressure testing against existing water system valves, and before being placed into service, <br /> potable water pipelines shall be chlorinated in accordance with the latest edition of AWWA C-651 , <br /> "Standard Procedure for Disinfecting Water Mains" . The procedure shall be approved by the Engineer. <br /> The location of the chlorination and sampling points will be as shown on the Drawings. Taps for <br /> chlorination and sampling shall be uncovered and backfilled by the Contractor as required. <br /> 1 .03 The pressure required for the field hydrostatic pressure test shall be 50 percent above the normal <br /> working pressure but not less than 150 psi. The Contractor shall provide temporary plugs and <br /> blocking necessary to maintain the required test pressure. Corporation cocks at least 3/4-inches in <br /> diameter, pipe riser and angle globe valves shall be provided at each pipe dead-end in order to bleed air <br /> from the line. Duration of pressure test shall be at least 2 hours. The cost of these items shall be <br /> included as a part of testing. <br /> 1 .04 The leakage test shall be conducted concurrently with the hydrostatic pressure test and shall be of not <br /> less than 2 hours duration. All leaks evident at the surface shall be repaired and leakage eliminated <br /> regardless of total leakage as shown by test. Lines which fail to meet tests shall be repaired and <br /> retested as necessary until test requirements are complied with. Defective materials, pipes, valves and <br /> accessories shall be removed and replaced. The pipe section to be tested shall be between valves or in <br /> such sections as may be directed by the Engineer by shutting valves or installing temporary plugs as <br /> required. In no case shall the section of line to be hydrostatically tested exceed 2000 feet in <br /> length. The line shall be filled with water and all air removed and the test pressure shall be <br /> maintained in the pipe for the entire test period by means of a force pump to be furnished by the <br /> Contractor. Accurate means shall be provided for measuring the water required to maintain this <br /> pressure. The amount of water required is a measure of the leakage. <br /> 1 .05 The Contractor must submit his plan for testing to the Engineer for review at least five (5) working <br /> days before starting the test. The Contractor shall remove and adequately dispose of all blocking <br /> material and equipment after completion and acceptance of the field hydrostatic test, unless <br /> otherwise directed by the Engineer. Any damage to the pipe coating shall be repaired by the Contractor. <br /> Lines shall be totally free and clean prior to final acceptance. <br /> 1 .06 The Engineer or the Engineer's representative must be present during testing. <br /> PART 2 - PRESSURE AND LEAKAGE TESTS OF UNDERGROUND PRESSURE PIPING <br /> 2 .01 Hydrostatic pressure and leakage tests for ductile iron pipe shall conform with Section 4 of AWWA <br /> Standard C-600, with the exception that the Contractor shall furnish all gauges, meters, pressure <br /> pumps and other equipment needed to test the line. PVC pipe shall be tested in accordance with <br /> 02519 — Testing and Disinfecting Water System <br /> 02519 - 1 <br />