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exercised in the installation of cable connections from the zinc ribbon to the pipe. <br /> All such cables shall be run straight without kinks, with no unnecessary slack <br /> except as would be required for an allowance for any soil contraction or pipe <br /> movement. <br /> 3.06 CABLES <br /> A. Cables buried in the ground shall be direct buried and shall be laid straight, <br /> without kinks. The cable shall have a minimum cover of 30 inches. Each cable <br /> run shall be continuous in length and free of joints or splices. Care shall be <br /> exercised during installation to avoid punctures, cuts, and similar damage to <br /> insulation. Any damage to insulation will require replacement of the entire cable <br /> length. Backfill surrounding the cables shall be native soil free of foreign <br /> materials. Cable warning tape shall be installed 12-inches above the entire <br /> buried length of the cable. All cables shall be identified with the nylon tags <br /> indicating correct pipe station and structure designation. <br /> B. Special cart= shall be exercised in the installation of cable connections from the <br /> zinc ribbon to the pipe and from the pipe to the test station. All such cables shall <br /> be run straight without kinks, with no unnecessary slack and with no loops except <br /> those on the drawings. All such loops shall be made into a minimum of 3-inch <br /> smooth radius. <br /> 3.07 CABLE-TO-PIPE CONNECTIONS — EXOTHERMIC PROCESS <br /> A. Cable-to-pipe connections shall be installed in the manner and at the locations <br /> shown on the drawings. Coating materials shall be removed from the pipe <br /> surface over an area just sufficient to make the connections. The surface shall <br /> be cleaned to white metal by grinding or filing prior to welding the conductor. <br /> Grinding with resin impregnated wheels shall not be allowed. The conductor <br /> shall be welded to the pipe by the exothermic process with a copper sleeve fitted <br /> over the conductor, and only sufficient insulation shall be removed from the <br /> conductor to allow placing in welding mold. After the weld has cooled, all slag <br /> shall be removed and the weld shall be tested with a sharp hammer blow to <br /> assure proper metallurgical bond. All defective welds shall be removed and <br /> replaced. All exposed surfaces of copper and steel shall be covered with a <br /> minimum thickness of '/4 inch of insulating materials as shown on the drawings. <br /> The cable to pipe connections shall be tested with a low resistance ohmmeter by <br /> the Contractor and approved by the Engineer prior to backfill. Cable to pipe <br /> connections backfilled prior to testing shall be rejected. <br /> 3.08 TEST STATIONS <br /> A. Test stations shall be installed at locations designated on the drawings and at all <br /> anode installation locations. Test stations shall be installed behind any curb and <br /> out of the roadway. Exact locations of test stations can be adjusted by the <br /> Contractor to meet field conditions. The Contractor shall obtain the Engineer's <br /> approval prior to deleting test stations or to move a test station greater than 100 <br /> feet from thE� location indicated on the drawings. Correct pipe station shall be <br /> indicated on the cable identification and record drawings. <br /> July 2007 Division 111-144 NEI Phase II Water and Sewer <br /> CIP Nos. 7468, 7589, 7590 <br />