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SECTION 02535 <br /> TESTING FORCE MAINS <br /> 1 . 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 /> 2. 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 /> 3 . 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 - Testing Force Mains <br /> 02535 = 7 <br />