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1. <br />2. <br />3. <br />SECTION 02535 <br />TESTING FORCE MAINS <br />SCOPE <br />A. This Section describes the procedural, material, and acceptance requirements for <br />cleaning and testing of the mainlines with regard to quality, alignment, tightness, and <br />overall integrity of the installed system. <br />GENERAL <br />A. The Contractor shall furnish all labor, materials, transportation, pumps, gauges, and <br />equipment necessary to flush and test the installed pipe system as required by these <br />Specifications. <br />B. The Contractor shall provide and install all temporary connections, corporation stops, <br />blowoffs, and the like required for flushing and testing, and upon completion of <br />satisfactory tests, shall remove same and install appropriate plugging/capping devices <br />or permanent connections as required. <br />Co The Contractor shall notify the Owner and Engineer at least 48 hours in advance of <br />all acceptance testing to be performed. No testing for acceptance of the work shall <br />begin until the Owner and Engineer or his authorized representative are present. <br />D. No interconnection shall be made between the new work and an existing active pipe <br />system, except that necessary and approved by the Owner for testing, until the work <br />is approved for use by the Engineer and until all approvals and clearances required by <br />applicable construction permits for use of the work are issued by the permitting <br />agency. <br />E. At least 3 business days prior to conducting each item of work under this Section, the <br />Contractor shall submit to the Engineer for approval a description of the specific <br />equipment, materials, and procedures to be used, plus identification of proposed <br />water source(s), to be used for this particular work item. <br />FLUSHING <br />A. Upon completion of each run of pipe between main valves or between a main valve <br />and a terminal point, the pipe run shall be flushed with clean water at a minimum full <br />diameter velocity of 2.5 ft./sec. in order to remove sand, debris, and other foreign <br />materials prior to pressure testing. <br />B. The pipe run to be flushed shall be slowly filled with clean water with all valves open <br />to allow escape of air pockets. High points in the pipe shall be vented with air release <br />valves. When the system is full and prior to flushing, all valves shall be fully closed. <br />02535 = 7 <br />02535 - Testing Force Mains <br />