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' Max. <br /> Minimum Test Allowable <br /> Type of Pipe Test Head Period Leakage(a) <br /> 1 Main plant gravity piping (b) 1 hour 200 <br /> 2 Effluent force main 150 psi 3 hours 30 <br /> 3 Other piping At 50 psi over working pressure or 50 psi over <br /> rated pressure, whichever is greater, for three <br /> hours. <br /> a <br /> 5 <br /> 6 (a) Allowable leakage in gallons per 24 hours per inch diameter per mile of pipe. <br /> 7 (b) 25 feet of head or to the maximum head that could be developed by filling pipes and <br /> 8 structures to overflow levels, whichever is greater. <br /> s <br /> 10 F. All leaks that are found shall be immediately corrected and the system again subjected to <br /> 11 the same test for a period of one hour. <br /> 12 <br /> ' 13 G. If leakage is more than allowable, the Contractor shall repair or replace the pipeline and <br /> 14 retest it. Do not use paints, asphalts, tars, or other type of pipe compounds to eliminate <br /> 15 leaks. <br /> 16 <br /> 17 H. The Contractor shall inform the Engineer at least two days in advance of the time set for <br /> 16 testing the piping system. <br /> 1s <br /> 20 I. The Contractor shall take all necessary precautions to prevent any joints from drawing while <br /> 21 the pipe lines and their appurtenances are being tested and he shall, at his own expense, <br /> 22 repair any damage to the pipes and their appurtenances, or to any other structures, <br /> 23 resulting from or caused by these tests. <br /> 24 <br /> 25 <br /> 26 <br /> ' 27 END OF SECTION <br /> r <br /> TESTING OF PIPELINES <br /> 050594 016673 <br />