2000-046 - Laserfiche WebLink

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lr C_1 a 0 SECTION 2M - WATER DISTRIBUTION SYSTEM TESTING AND DISINFECTION 1. SCOPE A. This Section describes the procedural, material, and acceptance requirements for cleaning, disinfecting, and testing of water distribution systems with regard to sanitary quality, alignment, tightness, and overall integrity of the installed system. 2. GENERAL A. The Contractor shall furnish all labor, materials, transportation. pumps, gauges, and equipment necessary to flush, disinfect, and test the installed pipe system as required by these Specifications. B. The Contractor shall provide and install all temporary connections, corporation stops, blowoffs, and the like required for flushing and testing. and upon completion of satisfactory tests, shall remove same and install appropriate plugging/capping devices or permanent conticctions as required. C. The Contractor shall notify the Engineer at least 24 hours in advance of all acceptance testing to be performed. No testing for acceptance of [lie work shall begin until the Engineer or his authorized representative is present. D. No interconnection shall be made between the new work and an existing active pipe system, except that necessary and approved by the Engineer for testing, until the work is approved for use by the Engineer and Cantil all approvals and clearances required by applicable construction permits for use of the work are issued by the permitting agency. E. At least 3 business days prior to conducting each item of work under this: Section, the Contractor shall submit to the Engineer for approval a description of the specific equipment, materials, and proccdures to be used, plus identification of proposed water source(s), testing lab(s) and field analysis kit(S) as applicable to the particular work item. 3. FLUSHING A. Upon completion of each run of pipe between main valves or between a twain valve and a terminal blowoff, [lie pipe run shall be flushed at a mininiurn full diameter velocity of 2.5 ft./sec. in order to remove sand, debris, and other foreign materials prior to pressure lesling ;and disinfection. During blushing, all in-lii,a service meters shall be bypassed or replaced with a temporary spool to prevent damage due to excessive flow. B. Where a pipe system is looped, no snore than one loop shall he included in any section being flushed. C. The pipe run to be flushed shall be slowly filled with clean water with all valves, hydrants, and services open to tallow escape of .Cir pockets. High points in the: pipe shall he vented with wain^able vilvcd t:apti as nocvscary. When (lie system its