2006-377 - Laserfiche WebLink

Home Browse Search

rate of leakage shall be less than the number of gallons per hour determined by the following formula : L = ND x ( P)1!2 r 7400 L = allowable leakage in gallons per hour r N = number of joints in the section tested r D = nominal diameter of the pipe in inches P = average test pressure maintained during the leakage test in r pounds per square inch gauge D . The Contractor must submit his plan for testing to the Engineer for review at least five (5) working days before starting the test. The Contractor shall remove and adequately dispose of all blocking material and equipment after completion and acceptance of the field hydrostatic test, unless otherwise directed by the Engineer. The Contractor shall repair r any damage to the pipe coating . Lines shall be totally free and clean prior to final acceptance . r E . The Engineer or his representative must be present during testing . F. If thrust blocks have been approved for use, thrust blocks shall not be r backfilled until inspected by IRCDUS inspectors . 10.02 ADDITIONAL PRESSURE TESTING FOR POLYETHYLENE ( PE) PIPES A. At the beginning of the testing period , thoroughly clean all new pipelines by whatever means necessary, including flushing , to remove all dirt, stones, pieces of wood , other material that may have entered during the construction period , and any dirty or discolored water from the lines. If, after this cleaning , any obstructions remain , they shall be removed . All debris cleaned from the lines shall be removed from the job site. r B . All PE water mains shall be field-tested . The Contractor shall supply all labor, equipment, material , gauges , pumps , meters and incidentals required for testing . The Contractor shall pressure test each water main upon completion of the pipe laying and backfilling operations, including placement of any required temporary roadway surfacing . r C. All water mains shall be tested to 150 percent of the operating design highest point along the test section by a recording type pressure gage r and a copy of the readout shall be submitted to the Engineer upon completion of the design pressure of the pipe that is 100 psi . The test pressure shall be measured at the test. All testing shall be conducted in r the presence of the Engineer or a designated representative . r l0 - ?