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tf <br />cil <br />+! <br />n -N <br />+ D. Testing procedure shall be as follows: <br />f 1. Fill line slowly with water. Maintain flow velocity less than two feet per second. <br />2. Expel air completely from the line during filling and again before applying test pressure. <br />Air shall be expelled by means of taps at ,points of highest elevation. <br />3. Apply initial test pressure and allow to stand without makeup pressure for two to three <br />hours, to allow for diametric expansion or pipe stretching to stabilize. <br />4. After this equilibrium period, apply the specified test pressure and turn the pump off. <br />'!i be final test pressure shall be held for one to three hours. <br />` 5. Upon completion of the test, the pressure shall be bled off from a location other than the <br />point where the pressure is monitored. The pressure drop shall be witnessed by the <br />resident project representative at the point where the pressure is being monitored and <br />shall show on the recorded pressure read-out submitted to the Engineer. <br />E. Allowable amount of makeup water for expansion during the pressure test shall conform to <br />Chart 6, Allowance for Expansion Under Test Pressure, Technical Report TR 3119-79, <br />published by the Plastic Pipe Institute (FPI). If there are no visual leaks or significant <br />pressure drops during the final test period, the installed pipe passes the test. <br />F. If any test of pipe laid disclosed leakage significant pressure drop greater than the allowed, <br />the Contractor shall, at hisfher own expense, locate and repair the cause of leakage and retest <br />the line. The amount of leakage, which will be permitted, shall be in accordance with <br />AWWA C644 Standards, <br />G. All visible leaks are to be repaired regardless of the amount of leakage. <br />H. The Contractor must submit his plan for testing to the Engineer for review at least (10) days before <br />starting the test. <br />+ <br />2.8 CLEANING <br />A. At the conclusion of the work, thoroughly clean all of the new pipe lines to remove all dirt, <br />i stones, pieces of wood or other material which may have entered during the construction <br />period. Debris cleaned from the lines shall be removed from the job site. If after this <br />cleaning, any obstructions remain, they shall be removed. <br />1 <br />* * END OF SECTION * * <br />I <br />t 15080A - 7 <br />fiipA tknt+h ppYyclhylenc <br />i P+�r {NL�PfiI <br />l Jeru'.+aF,IrAnwn i'igRcu ymKcl Mcsandl� k«er 6«{w,,.t..v+t. 14:1FRA - N,�F teeatKr pul,Ll,fere Y,pt 111'11'1 ,1nt <br />i <br />