Laserfiche WebLink
PART 2 - PRODUCTS <br /> 2 . 01 DISINFECTION CHEMICALS <br /> A. Chemicals : The disinfecting agent shall be sodium hypochlorite solution <br /> ANSI/AWWA B303 or liquid chlorine ANSI/AWWA B301 . Dry hypochlorite , <br /> similar to " HTH" or equal may also be used as the disinfecting agent . <br /> Bleach or Clorox is not acceptable . <br /> PART 3 - EXECUTION <br /> 3 .01 EXAMINATION <br /> A. Verify that piping systems have been cleaned , inspected , and tested . <br /> B . Coordinate scheduling of flushing , pressure testing , and disinfection <br /> activities with tie-ins , certifications , and sequence of construction . <br /> 3 . 02 FLUSHING AND PRESSURE TESTING - PIPING <br /> A . The Contractor shall furnish and install suitable temporary testing plugs or <br /> caps for the water lines , all necessary pressure pumps , hose , pipe <br /> connections , meters, gauges and other similar equipment, and all labor <br /> required , all without additional compensation for conducting pressure and <br /> leakage tests and flushing of the piping . Flushing and pressure testing shall <br /> be conducted in the following order. <br /> B . After all piping lines have been installed and before pressure testing , each run <br /> of pipe shall be thoroughly flushed so as to remove all debris and foreign <br /> matter from the piping and equipment. Clean and flush all piping using <br /> potable water. Sufficient flushing water and pigging shall be introduced into <br /> the piping to produce a discharge that is clear with no evidence of silt or <br /> foreign matter is visible . Contractor to provide means of discharging and <br /> disposing of water at Contractor's expense. <br /> C . Pressure testing ductile iron piping systems : <br /> 1 . The test pressure for the water piping , irrigation quality water piping , <br /> and force main piping systems constructed of ductile iron shall be <br /> 150 psi and this pressure shall be maintained for a period of not less <br /> than two hours . Tests shall be made between valves and as far as <br /> practicable and as approved by the Engineer. Potable water from the <br /> distribution system shall be used . Pressure shall not vary more than <br /> five (5) psi for piping during the test periods or as approved by the <br /> Engineer. Allowable leakage shall be computed on the basis of <br /> AWWA C-600 . <br /> 2 . All leaks evident at the surface shall be uncovered and repaired <br /> regardless of the total leakage as indicated by the test, and all pipes , <br /> valves and fittings and other materials found defective under the test <br /> shall be removed and replaced at the Contractor's expense . Tests <br /> GENERAL PROVISIONS <br /> TP- 17 <br /> C:\Documents and SettingsVeresaa\Local Settings\Temporary Internet Files\OLKF3\DIVISION 2 - Technical Provisions (Oslo Road <br /> Phase I).doc <br />